Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git

13 files changed, 2097 insertions, 1 deletions

diff --git a/include/net/genetlink.h b/include/net/genetlink.h
new file mode 100644
index 00000000000..52d8b1a73d5
--- /dev/null
+++ b/include/net/genetlink.h
@@ -0,0 +1,154 @@
+#ifndef __NET_GENERIC_NETLINK_H
+#define __NET_GENERIC_NETLINK_H
+
+#include <linux/genetlink.h>
+#include <net/netlink.h>
+
+/**
+ * struct genl_family - generic netlink family
+ * @id: protocol family idenfitier
+ * @hdrsize: length of user specific header in bytes
+ * @name: name of family
+ * @version: protocol version
+ * @maxattr: maximum number of attributes supported
+ * @attrbuf: buffer to store parsed attributes
+ * @ops_list: list of all assigned operations
+ * @family_list: family list
+ */
+struct genl_family
+{
+	unsigned int		id;
+	unsigned int		hdrsize;
+	char			name[GENL_NAMSIZ];
+	unsigned int		version;
+	unsigned int		maxattr;
+	struct module *		owner;
+	struct nlattr **	attrbuf;	/* private */
+	struct list_head	ops_list;	/* private */
+	struct list_head	family_list;	/* private */
+};
+
+#define GENL_ADMIN_PERM		0x01
+
+/**
+ * struct genl_info - receiving information
+ * @snd_seq: sending sequence number
+ * @snd_pid: netlink pid of sender
+ * @nlhdr: netlink message header
+ * @genlhdr: generic netlink message header
+ * @userhdr: user specific header
+ * @attrs: netlink attributes
+ */
+struct genl_info
+{
+	u32			snd_seq;
+	u32			snd_pid;
+	struct nlmsghdr *	nlhdr;
+	struct genlmsghdr *	genlhdr;
+	void *			userhdr;
+	struct nlattr **	attrs;
+};
+
+/**
+ * struct genl_ops - generic netlink operations
+ * @cmd: command identifier
+ * @flags: flags
+ * @policy: attribute validation policy
+ * @doit: standard command callback
+ * @dumpit: callback for dumpers
+ * @ops_list: operations list
+ */
+struct genl_ops
+{
+	unsigned int		cmd;
+	unsigned int		flags;
+	struct nla_policy	*policy;
+	int		       (*doit)(struct sk_buff *skb,
+				       struct genl_info *info);
+	int		       (*dumpit)(struct sk_buff *skb,
+					 struct netlink_callback *cb);
+	struct list_head	ops_list;
+};
+
+extern int genl_register_family(struct genl_family *family);
+extern int genl_unregister_family(struct genl_family *family);
+extern int genl_register_ops(struct genl_family *, struct genl_ops *ops);
+extern int genl_unregister_ops(struct genl_family *, struct genl_ops *ops);
+
+extern struct sock *genl_sock;
+
+/**
+ * genlmsg_put - Add generic netlink header to netlink message
+ * @skb: socket buffer holding the message
+ * @pid: netlink pid the message is addressed to
+ * @seq: sequence number (usually the one of the sender)
+ * @type: netlink message type
+ * @hdrlen: length of the user specific header
+ * @flags netlink message flags
+ * @cmd: generic netlink command
+ * @version: version
+ *
+ * Returns pointer to user specific header
+ */
+static inline void *genlmsg_put(struct sk_buff *skb, u32 pid, u32 seq,
+				int type, int hdrlen, int flags,
+				u8 cmd, u8 version)
+{
+	struct nlmsghdr *nlh;
+	struct genlmsghdr *hdr;
+
+	nlh = nlmsg_put(skb, pid, seq, type, GENL_HDRLEN + hdrlen, flags);
+	if (nlh == NULL)
+		return NULL;
+
+	hdr = nlmsg_data(nlh);
+	hdr->cmd = cmd;
+	hdr->version = version;
+	hdr->reserved = 0;
+
+	return (char *) hdr + GENL_HDRLEN;
+}
+
+/**
+ * genlmsg_end - Finalize a generic netlink message
+ * @skb: socket buffer the message is stored in
+ * @hdr: user specific header
+ */
+static inline int genlmsg_end(struct sk_buff *skb, void *hdr)
+{
+	return nlmsg_end(skb, hdr - GENL_HDRLEN - NLMSG_HDRLEN);
+}
+
+/**
+ * genlmsg_cancel - Cancel construction of a generic netlink message
+ * @skb: socket buffer the message is stored in
+ * @hdr: generic netlink message header
+ */
+static inline int genlmsg_cancel(struct sk_buff *skb, void *hdr)
+{
+	return nlmsg_cancel(skb, hdr - GENL_HDRLEN - NLMSG_HDRLEN);
+}
+
+/**
+ * genlmsg_multicast - multicast a netlink message
+ * @skb: netlink message as socket buffer
+ * @pid: own netlink pid to avoid sending to yourself
+ * @group: multicast group id
+ */
+static inline int genlmsg_multicast(struct sk_buff *skb, u32 pid,
+				    unsigned int group)
+{
+	return nlmsg_multicast(genl_sock, skb, pid, group);
+}
+
+/**
+ * genlmsg_unicast - unicast a netlink message
+ * @skb: netlink message as socket buffer
+ * @pid: netlink pid of the destination socket
+ */
+static inline int genlmsg_unicast(struct sk_buff *skb, u32 pid)
+{
+	return nlmsg_unicast(genl_sock, skb, pid);
+}
+
+#endif	/* __NET_GENERIC_NETLINK_H */
diff --git a/include/net/netfilter/ipv4/nf_conntrack_icmp.h b/include/net/netfilter/ipv4/nf_conntrack_icmp.h
new file mode 100644
index 00000000000..3dd22cff23e
--- /dev/null
+++ b/include/net/netfilter/ipv4/nf_conntrack_icmp.h
@@ -0,0 +1,11 @@
+#ifndef _NF_CONNTRACK_ICMP_H
+#define _NF_CONNTRACK_ICMP_H
+/* ICMP tracking. */
+#include <asm/atomic.h>
+
+struct ip_ct_icmp
+{
+	/* Optimization: when number in == number out, forget immediately. */
+	atomic_t count;
+};
+#endif /* _NF_CONNTRACK_ICMP_H */
diff --git a/include/net/netfilter/ipv4/nf_conntrack_ipv4.h b/include/net/netfilter/ipv4/nf_conntrack_ipv4.h
new file mode 100644
index 00000000000..25b081a730e
--- /dev/null
+++ b/include/net/netfilter/ipv4/nf_conntrack_ipv4.h
@@ -0,0 +1,43 @@
+/*
+ * IPv4 support for nf_conntrack.
+ *
+ * 23 Mar 2004: Yasuyuki Kozakai @ USAGI <yasuyuki.kozakai@toshiba.co.jp>
+ *	- move L3 protocol dependent part from include/linux/netfilter_ipv4/
+ *	  ip_conntarck.h
+ */
+
+#ifndef _NF_CONNTRACK_IPV4_H
+#define _NF_CONNTRACK_IPV4_H
+
+#ifdef CONFIG_IP_NF_NAT_NEEDED
+#include <linux/netfilter_ipv4/ip_nat.h>
+
+/* per conntrack: nat application helper private data */
+union ip_conntrack_nat_help {
+        /* insert nat helper private data here */
+};
+
+struct nf_conntrack_ipv4_nat {
+	struct ip_nat_info info;
+	union ip_conntrack_nat_help help;
+#if defined(CONFIG_IP_NF_TARGET_MASQUERADE) || \
+	defined(CONFIG_IP_NF_TARGET_MASQUERADE_MODULE)
+	int masq_index;
+#endif
+};
+#endif /* CONFIG_IP_NF_NAT_NEEDED */
+
+struct nf_conntrack_ipv4 {
+#ifdef CONFIG_IP_NF_NAT_NEEDED
+	struct nf_conntrack_ipv4_nat *nat;
+#endif
+};
+
+/* Returns new sk_buff, or NULL */
+struct sk_buff *
+nf_ct_ipv4_ct_gather_frags(struct sk_buff *skb);
+
+/* call to create an explicit dependency on nf_conntrack_l3proto_ipv4. */
+extern void need_ip_conntrack(void);
+
+#endif /*_NF_CONNTRACK_IPV4_H*/
diff --git a/include/net/netfilter/ipv6/nf_conntrack_icmpv6.h b/include/net/netfilter/ipv6/nf_conntrack_icmpv6.h
new file mode 100644
index 00000000000..86591afda29
--- /dev/null
+++ b/include/net/netfilter/ipv6/nf_conntrack_icmpv6.h
@@ -0,0 +1,27 @@
+/*
+ * ICMPv6 tracking.
+ *
+ * 21 Apl 2004: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
+ *	- separated from nf_conntrack_icmp.h
+ *
+ * Derived from include/linux/netfiter_ipv4/ip_conntrack_icmp.h
+ */
+
+#ifndef _NF_CONNTRACK_ICMPV6_H
+#define _NF_CONNTRACK_ICMPV6_H
+#include <asm/atomic.h>
+
+#ifndef ICMPV6_NI_QUERY
+#define ICMPV6_NI_QUERY 139
+#endif
+#ifndef ICMPV6_NI_REPLY
+#define ICMPV6_NI_REPLY 140
+#endif
+
+struct nf_ct_icmpv6
+{
+	/* Optimization: when number in == number out, forget immediately. */
+	atomic_t count;
+};
+
+#endif /* _NF_CONNTRACK_ICMPV6_H */
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
new file mode 100644
index 00000000000..cc482561079
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack.h
@@ -0,0 +1,354 @@
+/*
+ * Connection state tracking for netfilter.  This is separated from,
+ * but required by, the (future) NAT layer; it can also be used by an iptables
+ * extension.
+ *
+ * 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
+ *	- generalize L3 protocol dependent part.
+ *
+ * Derived from include/linux/netfiter_ipv4/ip_conntrack.h
+ */
+
+#ifndef _NF_CONNTRACK_H
+#define _NF_CONNTRACK_H
+
+#include <linux/netfilter/nf_conntrack_common.h>
+
+#ifdef __KERNEL__
+#include <linux/config.h>
+#include <linux/bitops.h>
+#include <linux/compiler.h>
+#include <asm/atomic.h>
+
+#include <linux/netfilter/nf_conntrack_tcp.h>
+#include <linux/netfilter/nf_conntrack_sctp.h>
+#include <net/netfilter/ipv4/nf_conntrack_icmp.h>
+#include <net/netfilter/ipv6/nf_conntrack_icmpv6.h>
+
+#include <net/netfilter/nf_conntrack_tuple.h>
+
+/* per conntrack: protocol private data */
+union nf_conntrack_proto {
+	/* insert conntrack proto private data here */
+	struct ip_ct_sctp sctp;
+	struct ip_ct_tcp tcp;
+	struct ip_ct_icmp icmp;
+	struct nf_ct_icmpv6 icmpv6;
+};
+
+union nf_conntrack_expect_proto {
+	/* insert expect proto private data here */
+};
+
+/* Add protocol helper include file here */
+#include <linux/netfilter/nf_conntrack_ftp.h>
+
+/* per conntrack: application helper private data */
+union nf_conntrack_help {
+	/* insert conntrack helper private data (master) here */
+	struct ip_ct_ftp_master ct_ftp_info;
+};
+
+#include <linux/types.h>
+#include <linux/skbuff.h>
+
+#ifdef CONFIG_NETFILTER_DEBUG
+#define NF_CT_ASSERT(x)							\
+do {									\
+	if (!(x))							\
+		/* Wooah!  I'm tripping my conntrack in a frenzy of	\
+		   netplay... */					\
+		printk("NF_CT_ASSERT: %s:%i(%s)\n",			\
+		       __FILE__, __LINE__, __FUNCTION__);		\
+} while(0)
+#else
+#define NF_CT_ASSERT(x)
+#endif
+
+struct nf_conntrack_helper;
+
+#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
+struct nf_conn
+{
+	/* Usage count in here is 1 for hash table/destruct timer, 1 per skb,
+           plus 1 for any connection(s) we are `master' for */
+	struct nf_conntrack ct_general;
+
+	/* XXX should I move this to the tail ? - Y.K */
+	/* These are my tuples; original and reply */
+	struct nf_conntrack_tuple_hash tuplehash[IP_CT_DIR_MAX];
+
+	/* Have we seen traffic both ways yet? (bitset) */
+	unsigned long status;
+
+	/* Timer function; drops refcnt when it goes off. */
+	struct timer_list timeout;
+
+#ifdef CONFIG_NF_CT_ACCT
+	/* Accounting Information (same cache line as other written members) */
+	struct ip_conntrack_counter counters[IP_CT_DIR_MAX];
+#endif
+	/* If we were expected by an expectation, this will be it */
+	struct nf_conn *master;
+	
+	/* Current number of expected connections */
+	unsigned int expecting;
+
+	/* Helper. if any */
+	struct nf_conntrack_helper *helper;
+
+	/* features - nat, helper, ... used by allocating system */
+	u_int32_t features;
+
+	/* Storage reserved for other modules: */
+
+	union nf_conntrack_proto proto;
+
+#if defined(CONFIG_NF_CONNTRACK_MARK)
+	u_int32_t mark;
+#endif
+
+	/* These members are dynamically allocated. */
+
+	union nf_conntrack_help *help;
+
+	/* Layer 3 dependent members. (ex: NAT) */
+	union {
+		struct nf_conntrack_ipv4 *ipv4;
+	} l3proto;
+	void *data[0];
+};
+
+struct nf_conntrack_expect
+{
+	/* Internal linked list (global expectation list) */
+	struct list_head list;
+
+	/* We expect this tuple, with the following mask */
+	struct nf_conntrack_tuple tuple, mask;
+ 
+	/* Function to call after setup and insertion */
+	void (*expectfn)(struct nf_conn *new,
+			 struct nf_conntrack_expect *this);
+
+	/* The conntrack of the master connection */
+	struct nf_conn *master;
+
+	/* Timer function; deletes the expectation. */
+	struct timer_list timeout;
+
+	/* Usage count. */
+	atomic_t use;
+
+	/* Flags */
+	unsigned int flags;
+
+#ifdef CONFIG_NF_NAT_NEEDED
+	/* This is the original per-proto part, used to map the
+	 * expected connection the way the recipient expects. */
+	union nf_conntrack_manip_proto saved_proto;
+	/* Direction relative to the master connection. */
+	enum ip_conntrack_dir dir;
+#endif
+};
+
+#define NF_CT_EXPECT_PERMANENT 0x1
+
+static inline struct nf_conn *
+nf_ct_tuplehash_to_ctrack(const struct nf_conntrack_tuple_hash *hash)
+{
+	return container_of(hash, struct nf_conn,
+			    tuplehash[hash->tuple.dst.dir]);
+}
+
+/* get master conntrack via master expectation */
+#define master_ct(conntr) (conntr->master)
+
+/* Alter reply tuple (maybe alter helper). */
+extern void
+nf_conntrack_alter_reply(struct nf_conn *conntrack,
+			 const struct nf_conntrack_tuple *newreply);
+
+/* Is this tuple taken? (ignoring any belonging to the given
+   conntrack). */
+extern int
+nf_conntrack_tuple_taken(const struct nf_conntrack_tuple *tuple,
+			 const struct nf_conn *ignored_conntrack);
+
+/* Return conntrack_info and tuple hash for given skb. */
+static inline struct nf_conn *
+nf_ct_get(const struct sk_buff *skb, enum ip_conntrack_info *ctinfo)
+{
+	*ctinfo = skb->nfctinfo;
+	return (struct nf_conn *)skb->nfct;
+}
+
+/* decrement reference count on a conntrack */
+static inline void nf_ct_put(struct nf_conn *ct)
+{
+	NF_CT_ASSERT(ct);
+	nf_conntrack_put(&ct->ct_general);
+}
+
+/* call to create an explicit dependency on nf_conntrack. */
+extern void need_nf_conntrack(void);
+
+extern int nf_ct_invert_tuplepr(struct nf_conntrack_tuple *inverse,
+				const struct nf_conntrack_tuple *orig);
+
+extern void __nf_ct_refresh_acct(struct nf_conn *ct,
+				 enum ip_conntrack_info ctinfo,
+				 const struct sk_buff *skb,
+				 unsigned long extra_jiffies,
+				 int do_acct);
+
+/* Refresh conntrack for this many jiffies and do accounting */
+static inline void nf_ct_refresh_acct(struct nf_conn *ct,
+				      enum ip_conntrack_info ctinfo,
+				      const struct sk_buff *skb,
+				      unsigned long extra_jiffies)
+{
+	__nf_ct_refresh_acct(ct, ctinfo, skb, extra_jiffies, 1);
+}
+
+/* Refresh conntrack for this many jiffies */
+static inline void nf_ct_refresh(struct nf_conn *ct,
+				 const struct sk_buff *skb,
+				 unsigned long extra_jiffies)
+{
+	__nf_ct_refresh_acct(ct, 0, skb, extra_jiffies, 0);
+}
+
+/* These are for NAT.  Icky. */
+/* Update TCP window tracking data when NAT mangles the packet */
+extern void nf_conntrack_tcp_update(struct sk_buff *skb,
+				    unsigned int dataoff,
+				    struct nf_conn *conntrack,
+				    int dir);
+
+/* Call me when a conntrack is destroyed. */
+extern void (*nf_conntrack_destroyed)(struct nf_conn *conntrack);
+
+/* Fake conntrack entry for untracked connections */
+extern struct nf_conn nf_conntrack_untracked;
+
+extern int nf_ct_no_defrag;
+
+/* Iterate over all conntracks: if iter returns true, it's deleted. */
+extern void
+nf_ct_iterate_cleanup(int (*iter)(struct nf_conn *i, void *data), void *data);
+extern void nf_conntrack_free(struct nf_conn *ct);
+extern struct nf_conn *
+nf_conntrack_alloc(const struct nf_conntrack_tuple *orig,
+		   const struct nf_conntrack_tuple *repl);
+
+/* It's confirmed if it is, or has been in the hash table. */
+static inline int nf_ct_is_confirmed(struct nf_conn *ct)
+{
+	return test_bit(IPS_CONFIRMED_BIT, &ct->status);
+}
+
+static inline int nf_ct_is_dying(struct nf_conn *ct)
+{
+	return test_bit(IPS_DYING_BIT, &ct->status);
+}
+
+extern unsigned int nf_conntrack_htable_size;
+
+#define NF_CT_STAT_INC(count) (__get_cpu_var(nf_conntrack_stat).count++)
+
+#ifdef CONFIG_NF_CONNTRACK_EVENTS
+#include <linux/notifier.h>
+#include <linux/interrupt.h>
+
+struct nf_conntrack_ecache {
+	struct nf_conn *ct;
+	unsigned int events;
+};
+DECLARE_PER_CPU(struct nf_conntrack_ecache, nf_conntrack_ecache);
+
+#define CONNTRACK_ECACHE(x)	(__get_cpu_var(nf_conntrack_ecache).x)
+
+extern struct notifier_block *nf_conntrack_chain;
+extern struct notifier_block *nf_conntrack_expect_chain;
+
+static inline int nf_conntrack_register_notifier(struct notifier_block *nb)
+{
+	return notifier_chain_register(&nf_conntrack_chain, nb);
+}
+
+static inline int nf_conntrack_unregister_notifier(struct notifier_block *nb)
+{
+	return notifier_chain_unregister(&nf_conntrack_chain, nb);
+}
+
+static inline int
+nf_conntrack_expect_register_notifier(struct notifier_block *nb)
+{
+	return notifier_chain_register(&nf_conntrack_expect_chain, nb);
+}
+
+static inline int
+nf_conntrack_expect_unregister_notifier(struct notifier_block *nb)
+{
+	return notifier_chain_unregister(&nf_conntrack_expect_chain, nb);
+}
+
+extern void nf_ct_deliver_cached_events(const struct nf_conn *ct);
+extern void __nf_ct_event_cache_init(struct nf_conn *ct);
+
+static inline void
+nf_conntrack_event_cache(enum ip_conntrack_events event,
+			 const struct sk_buff *skb)
+{
+	struct nf_conn *ct = (struct nf_conn *)skb->nfct;
+	struct nf_conntrack_ecache *ecache;
+
+	local_bh_disable();
+	ecache = &__get_cpu_var(nf_conntrack_ecache);
+	if (ct != ecache->ct)
+		__nf_ct_event_cache_init(ct);
+	ecache->events |= event;
+	local_bh_enable();
+}
+
+static inline void nf_conntrack_event(enum ip_conntrack_events event,
+				      struct nf_conn *ct)
+{
+	if (nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct))
+		notifier_call_chain(&nf_conntrack_chain, event, ct);
+}
+
+static inline void
+nf_conntrack_expect_event(enum ip_conntrack_expect_events event,
+			  struct nf_conntrack_expect *exp)
+{
+	notifier_call_chain(&nf_conntrack_expect_chain, event, exp);
+}
+#else /* CONFIG_NF_CONNTRACK_EVENTS */
+static inline void nf_conntrack_event_cache(enum ip_conntrack_events event,
+					    const struct sk_buff *skb) {}
+static inline void nf_conntrack_event(enum ip_conntrack_events event,
+				      struct nf_conn *ct) {}
+static inline void nf_ct_deliver_cached_events(const struct nf_conn *ct) {}
+static inline void
+nf_conntrack_expect_event(enum ip_conntrack_expect_events event,
+			  struct nf_conntrack_expect *exp) {}
+#endif /* CONFIG_NF_CONNTRACK_EVENTS */
+
+/* no helper, no nat */
+#define	NF_CT_F_BASIC	0
+/* for helper */
+#define	NF_CT_F_HELP	1
+/* for nat. */
+#define	NF_CT_F_NAT	2
+#define NF_CT_F_NUM	4
+
+extern int
+nf_conntrack_register_cache(u_int32_t features, const char *name, size_t size,
+			    int (*init_conntrack)(struct nf_conn *, u_int32_t));
+extern void
+nf_conntrack_unregister_cache(u_int32_t features);
+
+#endif /* __KERNEL__ */
+#endif /* _NF_CONNTRACK_H */
diff --git a/include/net/netfilter/nf_conntrack_compat.h b/include/net/netfilter/nf_conntrack_compat.h
new file mode 100644
index 00000000000..3cac19fb364
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_compat.h
@@ -0,0 +1,108 @@
+#ifndef _NF_CONNTRACK_COMPAT_H
+#define _NF_CONNTRACK_COMPAT_H
+
+#ifdef __KERNEL__
+
+#if defined(CONFIG_IP_NF_CONNTRACK) || defined(CONFIG_IP_NF_CONNTRACK_MODULE)
+
+#include <linux/netfilter_ipv4/ip_conntrack.h>
+
+#ifdef CONFIG_IP_NF_CONNTRACK_MARK
+static inline u_int32_t *nf_ct_get_mark(const struct sk_buff *skb,
+					u_int32_t *ctinfo)
+{
+	struct ip_conntrack *ct = ip_conntrack_get(skb, ctinfo);
+
+	if (ct)
+		return &ct->mark;
+	else
+		return NULL;
+}
+#endif /* CONFIG_IP_NF_CONNTRACK_MARK */
+
+#ifdef CONFIG_IP_NF_CT_ACCT
+static inline struct ip_conntrack_counter *
+nf_ct_get_counters(const struct sk_buff *skb)
+{
+	enum ip_conntrack_info ctinfo;
+	struct ip_conntrack *ct = ip_conntrack_get(skb, &ctinfo);
+
+	if (ct)
+		return ct->counters;
+	else
+		return NULL;
+}
+#endif /* CONFIG_IP_NF_CT_ACCT */
+
+static inline int nf_ct_is_untracked(const struct sk_buff *skb)
+{
+	return (skb->nfct == &ip_conntrack_untracked.ct_general);
+}
+
+static inline void nf_ct_untrack(struct sk_buff *skb)
+{
+	skb->nfct = &ip_conntrack_untracked.ct_general;
+}
+
+static inline int nf_ct_get_ctinfo(const struct sk_buff *skb,
+				   enum ip_conntrack_info *ctinfo)
+{
+	struct ip_conntrack *ct = ip_conntrack_get(skb, ctinfo);
+	return (ct != NULL);
+}
+
+#else /* CONFIG_IP_NF_CONNTRACK */
+
+#include <net/netfilter/ipv4/nf_conntrack_ipv4.h>
+#include <net/netfilter/nf_conntrack.h>
+
+#ifdef CONFIG_NF_CONNTRACK_MARK
+
+static inline u_int32_t *nf_ct_get_mark(const struct sk_buff *skb,
+					u_int32_t *ctinfo)
+{
+	struct nf_conn *ct = nf_ct_get(skb, ctinfo);
+
+	if (ct)
+		return &ct->mark;
+	else
+		return NULL;
+}
+#endif /* CONFIG_NF_CONNTRACK_MARK */
+
+#ifdef CONFIG_NF_CT_ACCT
+static inline struct ip_conntrack_counter *
+nf_ct_get_counters(const struct sk_buff *skb)
+{
+	enum ip_conntrack_info ctinfo;
+	struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
+
+	if (ct)
+		return ct->counters;
+	else
+		return NULL;
+}
+#endif /* CONFIG_NF_CT_ACCT */
+
+static inline int nf_ct_is_untracked(const struct sk_buff *skb)
+{
+	return (skb->nfct == &nf_conntrack_untracked.ct_general);
+}
+
+static inline void nf_ct_untrack(struct sk_buff *skb)
+{
+	skb->nfct = &nf_conntrack_untracked.ct_general;
+}
+
+static inline int nf_ct_get_ctinfo(const struct sk_buff *skb,
+				   enum ip_conntrack_info *ctinfo)
+{
+	struct nf_conn *ct = nf_ct_get(skb, ctinfo);
+	return (ct != NULL);
+}
+
+#endif /* CONFIG_IP_NF_CONNTRACK */
+
+#endif /* __KERNEL__ */
+
+#endif /* _NF_CONNTRACK_COMPAT_H */
diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
new file mode 100644
index 00000000000..da254525a4c
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -0,0 +1,76 @@
+/*
+ * This header is used to share core functionality between the
+ * standalone connection tracking module, and the compatibility layer's use
+ * of connection tracking.
+ *
+ * 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
+ *	- generalize L3 protocol dependent part.
+ *
+ * Derived from include/linux/netfiter_ipv4/ip_conntrack_core.h
+ */
+
+#ifndef _NF_CONNTRACK_CORE_H
+#define _NF_CONNTRACK_CORE_H
+
+#include <linux/netfilter.h>
+
+/* This header is used to share core functionality between the
+   standalone connection tracking module, and the compatibility layer's use
+   of connection tracking. */
+extern unsigned int nf_conntrack_in(int pf,
+				    unsigned int hooknum,
+				    struct sk_buff **pskb);
+
+extern int nf_conntrack_init(void);
+extern void nf_conntrack_cleanup(void);
+
+struct nf_conntrack_l3proto;
+extern struct nf_conntrack_l3proto *nf_ct_find_l3proto(u_int16_t pf);
+/* Like above, but you already have conntrack read lock. */
+extern struct nf_conntrack_l3proto *__nf_ct_find_l3proto(u_int16_t l3proto);
+
+struct nf_conntrack_protocol;
+
+extern int
+nf_ct_get_tuple(const struct sk_buff *skb,
+		unsigned int nhoff,
+		unsigned int dataoff,
+		u_int16_t l3num,
+		u_int8_t protonum,
+		struct nf_conntrack_tuple *tuple,
+		const struct nf_conntrack_l3proto *l3proto,
+		const struct nf_conntrack_protocol *protocol);
+
+extern int
+nf_ct_invert_tuple(struct nf_conntrack_tuple *inverse,
+		   const struct nf_conntrack_tuple *orig,
+		   const struct nf_conntrack_l3proto *l3proto,
+		   const struct nf_conntrack_protocol *protocol);
+
+/* Find a connection corresponding to a tuple. */
+extern struct nf_conntrack_tuple_hash *
+nf_conntrack_find_get(const struct nf_conntrack_tuple *tuple,
+		      const struct nf_conn *ignored_conntrack);
+
+extern int __nf_conntrack_confirm(struct sk_buff **pskb);
+
+/* Confirm a connection: returns NF_DROP if packet must be dropped. */
+static inline int nf_conntrack_confirm(struct sk_buff **pskb)
+{
+	struct nf_conn *ct = (struct nf_conn *)(*pskb)->nfct;
+	int ret = NF_ACCEPT;
+
+	if (ct) {
+		if (!nf_ct_is_confirmed(ct))
+			ret = __nf_conntrack_confirm(pskb);
+		nf_ct_deliver_cached_events(ct);
+	}
+	return ret;
+}
+
+extern void __nf_conntrack_attach(struct sk_buff *nskb, struct sk_buff *skb);
+
+extern struct list_head *nf_conntrack_hash;
+extern struct list_head nf_conntrack_expect_list;
+extern rwlock_t nf_conntrack_lock ;
+#endif /* _NF_CONNTRACK_CORE_H */
diff --git a/include/net/netfilter/nf_conntrack_helper.h b/include/net/netfilter/nf_conntrack_helper.h
new file mode 100644
index 00000000000..5a66b2a3a62
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_helper.h
@@ -0,0 +1,51 @@
+/*
+ * connection tracking helpers.
+ *
+ * 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
+ *	- generalize L3 protocol dependent part.
+ *
+ * Derived from include/linux/netfiter_ipv4/ip_conntrack_helper.h
+ */
+
+#ifndef _NF_CONNTRACK_HELPER_H
+#define _NF_CONNTRACK_HELPER_H
+#include <net/netfilter/nf_conntrack.h>
+
+struct module;
+
+struct nf_conntrack_helper
+{	
+	struct list_head list; 		/* Internal use. */
+
+	const char *name;		/* name of the module */
+	struct module *me;		/* pointer to self */
+	unsigned int max_expected;	/* Maximum number of concurrent 
+					 * expected connections */
+	unsigned int timeout;		/* timeout for expecteds */
+
+	/* Mask of things we will help (compared against server response) */
+	struct nf_conntrack_tuple tuple;
+	struct nf_conntrack_tuple mask;
+	
+	/* Function to call when data passes; return verdict, or -1 to
+           invalidate. */
+	int (*help)(struct sk_buff **pskb,
+		    unsigned int protoff,
+		    struct nf_conn *ct,
+		    enum ip_conntrack_info conntrackinfo);
+};
+
+extern int nf_conntrack_helper_register(struct nf_conntrack_helper *);
+extern void nf_conntrack_helper_unregister(struct nf_conntrack_helper *);
+
+/* Allocate space for an expectation: this is mandatory before calling
+   nf_conntrack_expect_related.  You will have to call put afterwards. */
+extern struct nf_conntrack_expect *
+nf_conntrack_expect_alloc(struct nf_conn *master);
+extern void nf_conntrack_expect_put(struct nf_conntrack_expect *exp);
+
+/* Add an expected connection: can have more than one per connection */
+extern int nf_conntrack_expect_related(struct nf_conntrack_expect *exp);
+extern void nf_conntrack_unexpect_related(struct nf_conntrack_expect *exp);
+
+#endif /*_NF_CONNTRACK_HELPER_H*/
diff --git a/include/net/netfilter/nf_conntrack_l3proto.h b/include/net/netfilter/nf_conntrack_l3proto.h
new file mode 100644
index 00000000000..01663e5b33d
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_l3proto.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C)2003,2004 USAGI/WIDE Project
+ *
+ * Header for use in defining a given L3 protocol for connection tracking.
+ *
+ * Author:
+ *	Yasuyuki Kozakai @USAGI	<yasuyuki.kozakai@toshiba.co.jp>
+ *
+ * Derived from include/netfilter_ipv4/ip_conntrack_protocol.h
+ */
+
+#ifndef _NF_CONNTRACK_L3PROTO_H
+#define _NF_CONNTRACK_L3PROTO_H
+#include <linux/seq_file.h>
+#include <net/netfilter/nf_conntrack.h>
+
+struct nf_conntrack_l3proto
+{
+	/* Next pointer. */
+	struct list_head list;
+
+	/* L3 Protocol Family number. ex) PF_INET */
+	u_int16_t l3proto;
+
+	/* Protocol name */
+	const char *name;
+
+	/*
+	 * Try to fill in the third arg: nhoff is offset of l3 proto
+         * hdr.  Return true if possible.
+	 */
+	int (*pkt_to_tuple)(const struct sk_buff *skb, unsigned int nhoff,
+			    struct nf_conntrack_tuple *tuple);
+
+	/*
+	 * Invert the per-proto part of the tuple: ie. turn xmit into reply.
+	 * Some packets can't be inverted: return 0 in that case.
+	 */
+	int (*invert_tuple)(struct nf_conntrack_tuple *inverse,
+			    const struct nf_conntrack_tuple *orig);
+
+	/* Print out the per-protocol part of the tuple. */
+	int (*print_tuple)(struct seq_file *s,
+			   const struct nf_conntrack_tuple *);
+
+	/* Print out the private part of the conntrack. */
+	int (*print_conntrack)(struct seq_file *s, const struct nf_conn *);
+
+	/* Returns verdict for packet, or -1 for invalid. */
+	int (*packet)(struct nf_conn *conntrack,
+		      const struct sk_buff *skb,
+		      enum ip_conntrack_info ctinfo);
+
+	/*
+	 * Called when a new connection for this protocol found;
+	 * returns TRUE if it's OK.  If so, packet() called next.
+	 */
+	int (*new)(struct nf_conn *conntrack, const struct sk_buff *skb);
+
+	/* Called when a conntrack entry is destroyed */
+	void (*destroy)(struct nf_conn *conntrack);
+
+	/*
+	 * Called before tracking. 
+	 *	*dataoff: offset of protocol header (TCP, UDP,...) in *pskb
+	 *	*protonum: protocol number
+	 */
+	int (*prepare)(struct sk_buff **pskb, unsigned int hooknum,
+		       unsigned int *dataoff, u_int8_t *protonum);
+
+	u_int32_t (*get_features)(const struct nf_conntrack_tuple *tuple);
+
+	/* Module (if any) which this is connected to. */
+	struct module *me;
+};
+
+extern struct nf_conntrack_l3proto *nf_ct_l3protos[AF_MAX];
+
+/* Protocol registration. */
+extern int nf_conntrack_l3proto_register(struct nf_conntrack_l3proto *proto);
+extern void nf_conntrack_l3proto_unregister(struct nf_conntrack_l3proto *proto);
+
+static inline struct nf_conntrack_l3proto *
+nf_ct_find_l3proto(u_int16_t l3proto)
+{
+	return nf_ct_l3protos[l3proto];
+}
+
+/* Existing built-in protocols */
+extern struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4;
+extern struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv6;
+extern struct nf_conntrack_l3proto nf_conntrack_generic_l3proto;
+#endif /*_NF_CONNTRACK_L3PROTO_H*/
diff --git a/include/net/netfilter/nf_conntrack_protocol.h b/include/net/netfilter/nf_conntrack_protocol.h
new file mode 100644
index 00000000000..b3afda35397
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_protocol.h
@@ -0,0 +1,105 @@
+/*
+ * Header for use in defining a given protocol for connection tracking.
+ *
+ * 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
+ *	- generalized L3 protocol dependent part.
+ *
+ * Derived from include/linux/netfiter_ipv4/ip_conntrack_protcol.h
+ */
+
+#ifndef _NF_CONNTRACK_PROTOCOL_H
+#define _NF_CONNTRACK_PROTOCOL_H
+#include <net/netfilter/nf_conntrack.h>
+
+struct seq_file;
+
+struct nf_conntrack_protocol
+{
+	/* Next pointer. */
+	struct list_head list;
+
+	/* L3 Protocol number. */
+	u_int16_t l3proto;
+
+	/* Protocol number. */
+	u_int8_t proto;
+
+	/* Protocol name */
+	const char *name;
+
+	/* Try to fill in the third arg: dataoff is offset past network protocol
+           hdr.  Return true if possible. */
+	int (*pkt_to_tuple)(const struct sk_buff *skb,
+			    unsigned int dataoff,
+			    struct nf_conntrack_tuple *tuple);
+
+	/* Invert the per-proto part of the tuple: ie. turn xmit into reply.
+	 * Some packets can't be inverted: return 0 in that case.
+	 */
+	int (*invert_tuple)(struct nf_conntrack_tuple *inverse,
+			    const struct nf_conntrack_tuple *orig);
+
+	/* Print out the per-protocol part of the tuple. Return like seq_* */
+	int (*print_tuple)(struct seq_file *s,
+			   const struct nf_conntrack_tuple *);
+
+	/* Print out the private part of the conntrack. */
+	int (*print_conntrack)(struct seq_file *s, const struct nf_conn *);
+
+	/* Returns verdict for packet, or -1 for invalid. */
+	int (*packet)(struct nf_conn *conntrack,
+		      const struct sk_buff *skb,
+		      unsigned int dataoff,
+		      enum ip_conntrack_info ctinfo,
+		      int pf,
+		      unsigned int hooknum);
+
+	/* Called when a new connection for this protocol found;
+	 * returns TRUE if it's OK.  If so, packet() called next. */
+	int (*new)(struct nf_conn *conntrack, const struct sk_buff *skb,
+		   unsigned int dataoff);
+
+	/* Called when a conntrack entry is destroyed */
+	void (*destroy)(struct nf_conn *conntrack);
+
+	int (*error)(struct sk_buff *skb, unsigned int dataoff,
+		     enum ip_conntrack_info *ctinfo,
+		     int pf, unsigned int hooknum);
+
+	/* Module (if any) which this is connected to. */
+	struct module *me;
+};
+
+/* Existing built-in protocols */
+extern struct nf_conntrack_protocol nf_conntrack_protocol_tcp6;
+extern struct nf_conntrack_protocol nf_conntrack_protocol_udp4;
+extern struct nf_conntrack_protocol nf_conntrack_protocol_udp6;
+extern struct nf_conntrack_protocol nf_conntrack_generic_protocol;
+
+#define MAX_NF_CT_PROTO 256
+extern struct nf_conntrack_protocol **nf_ct_protos[PF_MAX];
+
+extern struct nf_conntrack_protocol *
+nf_ct_find_proto(u_int16_t l3proto, u_int8_t protocol);
+
+/* Protocol registration. */
+extern int nf_conntrack_protocol_register(struct nf_conntrack_protocol *proto);
+extern void nf_conntrack_protocol_unregister(struct nf_conntrack_protocol *proto);
+
+/* Log invalid packets */
+extern unsigned int nf_ct_log_invalid;
+
+#ifdef CONFIG_SYSCTL
+#ifdef DEBUG_INVALID_PACKETS
+#define LOG_INVALID(proto) \
+	(nf_ct_log_invalid == (proto) || nf_ct_log_invalid == IPPROTO_RAW)
+#else
+#define LOG_INVALID(proto) \
+	((nf_ct_log_invalid == (proto) || nf_ct_log_invalid == IPPROTO_RAW) \
+	 && net_ratelimit())
+#endif
+#else
+#define LOG_INVALID(proto) 0
+#endif /* CONFIG_SYSCTL */
+
+#endif /*_NF_CONNTRACK_PROTOCOL_H*/
diff --git a/include/net/netfilter/nf_conntrack_tuple.h b/include/net/netfilter/nf_conntrack_tuple.h
new file mode 100644
index 00000000000..14ce790e5c6
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_tuple.h
@@ -0,0 +1,190 @@
+/*
+ * Definitions and Declarations for tuple.
+ *
+ * 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
+ *	- generalize L3 protocol dependent part.
+ *
+ * Derived from include/linux/netfiter_ipv4/ip_conntrack_tuple.h
+ */
+
+#ifndef _NF_CONNTRACK_TUPLE_H
+#define _NF_CONNTRACK_TUPLE_H
+
+#include <linux/netfilter/nf_conntrack_tuple_common.h>
+
+/* A `tuple' is a structure containing the information to uniquely
+  identify a connection.  ie. if two packets have the same tuple, they
+  are in the same connection; if not, they are not.
+
+  We divide the structure along "manipulatable" and
+  "non-manipulatable" lines, for the benefit of the NAT code.
+*/
+
+#define NF_CT_TUPLE_L3SIZE	4
+
+/* The l3 protocol-specific manipulable parts of the tuple: always in
+   network order! */
+union nf_conntrack_man_l3proto {
+	u_int32_t all[NF_CT_TUPLE_L3SIZE];
+	u_int32_t ip;
+	u_int32_t ip6[4];
+};
+
+/* The protocol-specific manipulable parts of the tuple: always in
+   network order! */
+union nf_conntrack_man_proto
+{
+	/* Add other protocols here. */
+	u_int16_t all;
+
+	struct {
+		u_int16_t port;
+	} tcp;
+	struct {
+		u_int16_t port;
+	} udp;
+	struct {
+		u_int16_t id;
+	} icmp;
+	struct {
+		u_int16_t port;
+	} sctp;
+};
+
+/* The manipulable part of the tuple. */
+struct nf_conntrack_man
+{
+	union nf_conntrack_man_l3proto u3;
+	union nf_conntrack_man_proto u;
+	/* Layer 3 protocol */
+	u_int16_t l3num;
+};
+
+/* This contains the information to distinguish a connection. */
+struct nf_conntrack_tuple
+{
+	struct nf_conntrack_man src;
+
+	/* These are the parts of the tuple which are fixed. */
+	struct {
+		union {
+			u_int32_t all[NF_CT_TUPLE_L3SIZE];
+			u_int32_t ip;
+			u_int32_t ip6[4];
+		} u3;
+		union {
+			/* Add other protocols here. */
+			u_int16_t all;
+
+			struct {
+				u_int16_t port;
+			} tcp;
+			struct {
+				u_int16_t port;
+			} udp;
+			struct {
+				u_int8_t type, code;
+			} icmp;
+			struct {
+				u_int16_t port;
+			} sctp;
+		} u;
+
+		/* The protocol. */
+		u_int8_t protonum;
+
+		/* The direction (for tuplehash) */
+		u_int8_t dir;
+	} dst;
+};
+
+/* This is optimized opposed to a memset of the whole structure.  Everything we
+ * really care about is the  source/destination unions */
+#define NF_CT_TUPLE_U_BLANK(tuple)                              	\
+        do {                                                    	\
+                (tuple)->src.u.all = 0;                         	\
+                (tuple)->dst.u.all = 0;                         	\
+		memset(&(tuple)->src.u3, 0, sizeof((tuple)->src.u3));	\
+		memset(&(tuple)->dst.u3, 0, sizeof((tuple)->dst.u3));	\
+        } while (0)
+
+#ifdef __KERNEL__
+
+#define NF_CT_DUMP_TUPLE(tp)						    \
+DEBUGP("tuple %p: %u %u %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x %hu -> %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x %hu\n",					    \
+	(tp), (tp)->src.l3num, (tp)->dst.protonum,			    \
+	NIP6(*(struct in6_addr *)(tp)->src.u3.all), ntohs((tp)->src.u.all), \
+	NIP6(*(struct in6_addr *)(tp)->dst.u3.all), ntohs((tp)->dst.u.all))
+
+/* If we're the first tuple, it's the original dir. */
+#define NF_CT_DIRECTION(h)						\
+	((enum ip_conntrack_dir)(h)->tuple.dst.dir)
+
+/* Connections have two entries in the hash table: one for each way */
+struct nf_conntrack_tuple_hash
+{
+	struct list_head list;
+
+	struct nf_conntrack_tuple tuple;
+};
+
+#endif /* __KERNEL__ */
+
+static inline int nf_ct_tuple_src_equal(const struct nf_conntrack_tuple *t1,
+				        const struct nf_conntrack_tuple *t2)
+{ 
+	return (t1->src.u3.all[0] == t2->src.u3.all[0] &&
+		t1->src.u3.all[1] == t2->src.u3.all[1] &&
+		t1->src.u3.all[2] == t2->src.u3.all[2] &&
+		t1->src.u3.all[3] == t2->src.u3.all[3] &&
+		t1->src.u.all == t2->src.u.all &&
+		t1->src.l3num == t2->src.l3num &&
+		t1->dst.protonum == t2->dst.protonum);
+}
+
+static inline int nf_ct_tuple_dst_equal(const struct nf_conntrack_tuple *t1,
+				        const struct nf_conntrack_tuple *t2)
+{
+	return (t1->dst.u3.all[0] == t2->dst.u3.all[0] &&
+		t1->dst.u3.all[1] == t2->dst.u3.all[1] &&
+		t1->dst.u3.all[2] == t2->dst.u3.all[2] &&
+		t1->dst.u3.all[3] == t2->dst.u3.all[3] &&
+		t1->dst.u.all == t2->dst.u.all &&
+		t1->src.l3num == t2->src.l3num &&
+		t1->dst.protonum == t2->dst.protonum);
+}
+
+static inline int nf_ct_tuple_equal(const struct nf_conntrack_tuple *t1,
+				    const struct nf_conntrack_tuple *t2)
+{
+	return nf_ct_tuple_src_equal(t1, t2) && nf_ct_tuple_dst_equal(t1, t2);
+}
+
+static inline int nf_ct_tuple_mask_cmp(const struct nf_conntrack_tuple *t,
+				       const struct nf_conntrack_tuple *tuple,
+				       const struct nf_conntrack_tuple *mask)
+{
+	int count = 0;
+
+        for (count = 0; count < NF_CT_TUPLE_L3SIZE; count++){
+                if ((t->src.u3.all[count] ^ tuple->src.u3.all[count]) &
+                    mask->src.u3.all[count])
+                        return 0;
+        }
+
+        for (count = 0; count < NF_CT_TUPLE_L3SIZE; count++){
+                if ((t->dst.u3.all[count] ^ tuple->dst.u3.all[count]) &
+                    mask->dst.u3.all[count])
+                        return 0;
+        }
+
+        if ((t->src.u.all ^ tuple->src.u.all) & mask->src.u.all ||
+            (t->dst.u.all ^ tuple->dst.u.all) & mask->dst.u.all ||
+            (t->src.l3num ^ tuple->src.l3num) & mask->src.l3num ||
+            (t->dst.protonum ^ tuple->dst.protonum) & mask->dst.protonum)
+                return 0;
+
+        return 1;
+}
+
+#endif /* _NF_CONNTRACK_TUPLE_H */
diff --git a/include/net/netlink.h b/include/net/netlink.h
new file mode 100644
index 00000000000..640c26a90cf
--- /dev/null
+++ b/include/net/netlink.h
@@ -0,0 +1,883 @@
+#ifndef __NET_NETLINK_H
+#define __NET_NETLINK_H
+
+#include <linux/types.h>
+#include <linux/netlink.h>
+
+/* ========================================================================
+ *         Netlink Messages and Attributes Interface (As Seen On TV)
+ * ------------------------------------------------------------------------
+ *                          Messages Interface
+ * ------------------------------------------------------------------------
+ *
+ * Message Format:
+ *    <--- nlmsg_total_size(payload)  --->
+ *    <-- nlmsg_msg_size(payload) ->
+ *   +----------+- - -+-------------+- - -+-------- - -
+ *   | nlmsghdr | Pad |   Payload   | Pad | nlmsghdr
+ *   +----------+- - -+-------------+- - -+-------- - -
+ *   nlmsg_data(nlh)---^                   ^
+ *   nlmsg_next(nlh)-----------------------+
+ *
+ * Payload Format:
+ *    <---------------------- nlmsg_len(nlh) --------------------->
+ *    <------ hdrlen ------>       <- nlmsg_attrlen(nlh, hdrlen) ->
+ *   +----------------------+- - -+--------------------------------+
+ *   |     Family Header    | Pad |           Attributes           |
+ *   +----------------------+- - -+--------------------------------+
+ *   nlmsg_attrdata(nlh, hdrlen)---^
+ *
+ * Data Structures:
+ *   struct nlmsghdr			netlink message header
+ *
+ * Message Construction:
+ *   nlmsg_new()			create a new netlink message
+ *   nlmsg_put()			add a netlink message to an skb
+ *   nlmsg_put_answer()			callback based nlmsg_put()
+ *   nlmsg_end()			finanlize netlink message
+ *   nlmsg_cancel()			cancel message construction
+ *   nlmsg_free()			free a netlink message
+ *
+ * Message Sending:
+ *   nlmsg_multicast()			multicast message to several groups
+ *   nlmsg_unicast()			unicast a message to a single socket
+ *
+ * Message Length Calculations:
+ *   nlmsg_msg_size(payload)		length of message w/o padding
+ *   nlmsg_total_size(payload)		length of message w/ padding
+ *   nlmsg_padlen(payload)		length of padding at tail
+ *
+ * Message Payload Access:
+ *   nlmsg_data(nlh)			head of message payload
+ *   nlmsg_len(nlh)			length of message payload
+ *   nlmsg_attrdata(nlh, hdrlen)	head of attributes data
+ *   nlmsg_attrlen(nlh, hdrlen)		length of attributes data
+ *
+ * Message Parsing:
+ *   nlmsg_ok(nlh, remaining)		does nlh fit into remaining bytes?
+ *   nlmsg_next(nlh, remaining)		get next netlink message
+ *   nlmsg_parse()			parse attributes of a message
+ *   nlmsg_find_attr()			find an attribute in a message
+ *   nlmsg_for_each_msg()		loop over all messages
+ *   nlmsg_validate()			validate netlink message incl. attrs
+ *   nlmsg_for_each_attr()		loop over all attributes
+ *
+ * ------------------------------------------------------------------------
+ *                          Attributes Interface
+ * ------------------------------------------------------------------------
+ *
+ * Attribute Format:
+ *    <------- nla_total_size(payload) ------->
+ *    <---- nla_attr_size(payload) ----->
+ *   +----------+- - -+- - - - - - - - - +- - -+-------- - -
+ *   |  Header  | Pad |     Payload      | Pad |  Header
+ *   +----------+- - -+- - - - - - - - - +- - -+-------- - -
+ *                     <- nla_len(nla) ->      ^
+ *   nla_data(nla)----^                        |
+ *   nla_next(nla)-----------------------------'
+ *
+ * Data Structures:
+ *   struct nlattr			netlink attribtue header
+ *
+ * Attribute Construction:
+ *   nla_reserve(skb, type, len)	reserve skb tailroom for an attribute
+ *   nla_put(skb, type, len, data)	add attribute to skb
+ *
+ * Attribute Construction for Basic Types:
+ *   nla_put_u8(skb, type, value)	add u8 attribute to skb
+ *   nla_put_u16(skb, type, value)	add u16 attribute to skb
+ *   nla_put_u32(skb, type, value)	add u32 attribute to skb
+ *   nla_put_u64(skb, type, value)	add u64 attribute to skb
+ *   nla_put_string(skb, type, str)	add string attribute to skb
+ *   nla_put_flag(skb, type)		add flag attribute to skb
+ *   nla_put_msecs(skb, type, jiffies)	add msecs attribute to skb
+ *
+ * Exceptions Based Attribute Construction:
+ *   NLA_PUT(skb, type, len, data)	add attribute to skb
+ *   NLA_PUT_U8(skb, type, value)	add u8 attribute to skb
+ *   NLA_PUT_U16(skb, type, value)	add u16 attribute to skb
+ *   NLA_PUT_U32(skb, type, value)	add u32 attribute to skb
+ *   NLA_PUT_U64(skb, type, value)	add u64 attribute to skb
+ *   NLA_PUT_STRING(skb, type, str)	add string attribute to skb
+ *   NLA_PUT_FLAG(skb, type)		add flag attribute to skb
+ *   NLA_PUT_MSECS(skb, type, jiffies)	add msecs attribute to skb
+ *
+ *   The meaning of these functions is equal to their lower case
+ *   variants but they jump to the label nla_put_failure in case
+ *   of a failure.
+ *
+ * Nested Attributes Construction:
+ *   nla_nest_start(skb, type)		start a nested attribute
+ *   nla_nest_end(skb, nla)		finalize a nested attribute
+ *   nla_nest_cancel(skb, nla)		cancel nested attribute construction
+ *
+ * Attribute Length Calculations:
+ *   nla_attr_size(payload)		length of attribute w/o padding
+ *   nla_total_size(payload)		length of attribute w/ padding
+ *   nla_padlen(payload)		length of padding
+ *
+ * Attribute Payload Access:
+ *   nla_data(nla)			head of attribute payload
+ *   nla_len(nla)			length of attribute payload
+ *
+ * Attribute Payload Access for Basic Types:
+ *   nla_get_u8(nla)			get payload for a u8 attribute
+ *   nla_get_u16(nla)			get payload for a u16 attribute
+ *   nla_get_u32(nla)			get payload for a u32 attribute
+ *   nla_get_u64(nla)			get payload for a u64 attribute
+ *   nla_get_flag(nla)			return 1 if flag is true
+ *   nla_get_msecs(nla)			get payload for a msecs attribute
+ *
+ * Attribute Misc:
+ *   nla_memcpy(dest, nla, count)	copy attribute into memory
+ *   nla_memcmp(nla, data, size)	compare attribute with memory area
+ *   nla_strlcpy(dst, nla, size)	copy attribute to a sized string
+ *   nla_strcmp(nla, str)		compare attribute with string
+ *
+ * Attribute Parsing:
+ *   nla_ok(nla, remaining)		does nla fit into remaining bytes?
+ *   nla_next(nla, remaining)		get next netlink attribute
+ *   nla_validate()			validate a stream of attributes
+ *   nla_find()				find attribute in stream of attributes
+ *   nla_parse()			parse and validate stream of attrs
+ *   nla_parse_nested()			parse nested attribuets
+ *   nla_for_each_attr()		loop over all attributes
+ *=========================================================================
+ */
+
+ /**
+  * Standard attribute types to specify validation policy
+  */
+enum {
+	NLA_UNSPEC,
+	NLA_U8,
+	NLA_U16,
+	NLA_U32,
+	NLA_U64,
+	NLA_STRING,
+	NLA_FLAG,
+	NLA_MSECS,
+	NLA_NESTED,
+	__NLA_TYPE_MAX,
+};
+
+#define NLA_TYPE_MAX (__NLA_TYPE_MAX - 1)
+
+/**
+ * struct nla_policy - attribute validation policy
+ * @type: Type of attribute or NLA_UNSPEC
+ * @minlen: Minimal length of payload required to be available
+ *
+ * Policies are defined as arrays of this struct, the array must be
+ * accessible by attribute type up to the highest identifier to be expected.
+ *
+ * Example:
+ * static struct nla_policy my_policy[ATTR_MAX+1] __read_mostly = {
+ * 	[ATTR_FOO] = { .type = NLA_U16 },
+ *	[ATTR_BAR] = { .type = NLA_STRING },
+ *	[ATTR_BAZ] = { .minlen = sizeof(struct mystruct) },
+ * };
+ */
+struct nla_policy {
+	u16		type;
+	u16		minlen;
+};
+
+extern void		netlink_run_queue(struct sock *sk, unsigned int *qlen,
+					  int (*cb)(struct sk_buff *,
+						    struct nlmsghdr *, int *));
+extern void		netlink_queue_skip(struct nlmsghdr *nlh,
+					   struct sk_buff *skb);
+
+extern int		nla_validate(struct nlattr *head, int len, int maxtype,
+				     struct nla_policy *policy);
+extern int		nla_parse(struct nlattr *tb[], int maxtype,
+				  struct nlattr *head, int len,
+				  struct nla_policy *policy);
+extern struct nlattr *	nla_find(struct nlattr *head, int len, int attrtype);
+extern size_t		nla_strlcpy(char *dst, const struct nlattr *nla,
+				    size_t dstsize);
+extern int		nla_memcpy(void *dest, struct nlattr *src, int count);
+extern int		nla_memcmp(const struct nlattr *nla, const void *data,
+				   size_t size);
+extern int		nla_strcmp(const struct nlattr *nla, const char *str);
+extern struct nlattr *	__nla_reserve(struct sk_buff *skb, int attrtype,
+				      int attrlen);
+extern struct nlattr *	nla_reserve(struct sk_buff *skb, int attrtype,
+				    int attrlen);
+extern void		__nla_put(struct sk_buff *skb, int attrtype,
+				  int attrlen, const void *data);
+extern int		nla_put(struct sk_buff *skb, int attrtype,
+				int attrlen, const void *data);
+
+/**************************************************************************
+ * Netlink Messages
+ **************************************************************************/
+
+/**
+ * nlmsg_msg_size - length of netlink message not including padding
+ * @payload: length of message payload
+ */
+static inline int nlmsg_msg_size(int payload)
+{
+	return NLMSG_HDRLEN + payload;
+}
+
+/**
+ * nlmsg_total_size - length of netlink message including padding
+ * @payload: length of message payload
+ */
+static inline int nlmsg_total_size(int payload)
+{
+	return NLMSG_ALIGN(nlmsg_msg_size(payload));
+}
+
+/**
+ * nlmsg_padlen - length of padding at the message's tail
+ * @payload: length of message payload
+ */
+static inline int nlmsg_padlen(int payload)
+{
+	return nlmsg_total_size(payload) - nlmsg_msg_size(payload);
+}
+
+/**
+ * nlmsg_data - head of message payload
+ * @nlh: netlink messsage header
+ */
+static inline void *nlmsg_data(const struct nlmsghdr *nlh)
+{
+	return (unsigned char *) nlh + NLMSG_HDRLEN;
+}
+
+/**
+ * nlmsg_len - length of message payload
+ * @nlh: netlink message header
+ */
+static inline int nlmsg_len(const struct nlmsghdr *nlh)
+{
+	return nlh->nlmsg_len - NLMSG_HDRLEN;
+}
+
+/**
+ * nlmsg_attrdata - head of attributes data
+ * @nlh: netlink message header
+ * @hdrlen: length of family specific header
+ */
+static inline struct nlattr *nlmsg_attrdata(const struct nlmsghdr *nlh,
+					    int hdrlen)
+{
+	unsigned char *data = nlmsg_data(nlh);
+	return (struct nlattr *) (data + NLMSG_ALIGN(hdrlen));
+}
+
+/**
+ * nlmsg_attrlen - length of attributes data
+ * @nlh: netlink message header
+ * @hdrlen: length of family specific header
+ */
+static inline int nlmsg_attrlen(const struct nlmsghdr *nlh, int hdrlen)
+{
+	return nlmsg_len(nlh) - NLMSG_ALIGN(hdrlen);
+}
+
+/**
+ * nlmsg_ok - check if the netlink message fits into the remaining bytes
+ * @nlh: netlink message header
+ * @remaining: number of bytes remaining in message stream
+ */
+static inline int nlmsg_ok(const struct nlmsghdr *nlh, int remaining)
+{
+	return (remaining >= sizeof(struct nlmsghdr) &&
+		nlh->nlmsg_len >= sizeof(struct nlmsghdr) &&
+		nlh->nlmsg_len <= remaining);
+}
+
+/**
+ * nlmsg_next - next netlink message in message stream
+ * @nlh: netlink message header
+ * @remaining: number of bytes remaining in message stream
+ *
+ * Returns the next netlink message in the message stream and
+ * decrements remaining by the size of the current message.
+ */
+static inline struct nlmsghdr *nlmsg_next(struct nlmsghdr *nlh, int *remaining)
+{
+	int totlen = NLMSG_ALIGN(nlh->nlmsg_len);
+
+	*remaining -= totlen;
+
+	return (struct nlmsghdr *) ((unsigned char *) nlh + totlen);
+}
+
+/**
+ * nlmsg_parse - parse attributes of a netlink message
+ * @nlh: netlink message header
+ * @hdrlen: length of family specific header
+ * @tb: destination array with maxtype+1 elements
+ * @maxtype: maximum attribute type to be expected
+ * @policy: validation policy
+ *
+ * See nla_parse()
+ */
+static inline int nlmsg_parse(struct nlmsghdr *nlh, int hdrlen,
+			      struct nlattr *tb[], int maxtype,
+			      struct nla_policy *policy)
+{
+	if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen))
+		return -EINVAL;
+
+	return nla_parse(tb, maxtype, nlmsg_attrdata(nlh, hdrlen),
+			 nlmsg_attrlen(nlh, hdrlen), policy);
+}
+
+/**
+ * nlmsg_find_attr - find a specific attribute in a netlink message
+ * @nlh: netlink message header
+ * @hdrlen: length of familiy specific header
+ * @attrtype: type of attribute to look for
+ *
+ * Returns the first attribute which matches the specified type.
+ */
+static inline struct nlattr *nlmsg_find_attr(struct nlmsghdr *nlh,
+					     int hdrlen, int attrtype)
+{
+	return nla_find(nlmsg_attrdata(nlh, hdrlen),
+			nlmsg_attrlen(nlh, hdrlen), attrtype);
+}
+
+/**
+ * nlmsg_validate - validate a netlink message including attributes
+ * @nlh: netlinket message header
+ * @hdrlen: length of familiy specific header
+ * @maxtype: maximum attribute type to be expected
+ * @policy: validation policy
+ */
+static inline int nlmsg_validate(struct nlmsghdr *nlh, int hdrlen, int maxtype,
+				 struct nla_policy *policy)
+{
+	if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen))
+		return -EINVAL;
+
+	return nla_validate(nlmsg_attrdata(nlh, hdrlen),
+			    nlmsg_attrlen(nlh, hdrlen), maxtype, policy);
+}
+
+/**
+ * nlmsg_for_each_attr - iterate over a stream of attributes
+ * @pos: loop counter, set to current attribute
+ * @nlh: netlink message header
+ * @hdrlen: length of familiy specific header
+ * @rem: initialized to len, holds bytes currently remaining in stream
+ */
+#define nlmsg_for_each_attr(pos, nlh, hdrlen, rem) \
+	nla_for_each_attr(pos, nlmsg_attrdata(nlh, hdrlen), \
+			  nlmsg_attrlen(nlh, hdrlen), rem)
+
+#if 0
+/* FIXME: Enable once all users have been converted */
+
+/**
+ * __nlmsg_put - Add a new netlink message to an skb
+ * @skb: socket buffer to store message in
+ * @pid: netlink process id
+ * @seq: sequence number of message
+ * @type: message type
+ * @payload: length of message payload
+ * @flags: message flags
+ *
+ * The caller is responsible to ensure that the skb provides enough
+ * tailroom for both the netlink header and payload.
+ */
+static inline struct nlmsghdr *__nlmsg_put(struct sk_buff *skb, u32 pid,
+					   u32 seq, int type, int payload,
+					   int flags)
+{
+	struct nlmsghdr *nlh;
+
+	nlh = (struct nlmsghdr *) skb_put(skb, nlmsg_total_size(payload));
+	nlh->nlmsg_type = type;
+	nlh->nlmsg_len = nlmsg_msg_size(payload);
+	nlh->nlmsg_flags = flags;
+	nlh->nlmsg_pid = pid;
+	nlh->nlmsg_seq = seq;
+
+	memset((unsigned char *) nlmsg_data(nlh) + payload, 0,
+	       nlmsg_padlen(payload));
+
+	return nlh;
+}
+#endif
+
+/**
+ * nlmsg_put - Add a new netlink message to an skb
+ * @skb: socket buffer to store message in
+ * @pid: netlink process id
+ * @seq: sequence number of message
+ * @type: message type
+ * @payload: length of message payload
+ * @flags: message flags
+ *
+ * Returns NULL if the tailroom of the skb is insufficient to store
+ * the message header and payload.
+ */
+static inline struct nlmsghdr *nlmsg_put(struct sk_buff *skb, u32 pid, u32 seq,
+					 int type, int payload, int flags)
+{
+	if (unlikely(skb_tailroom(skb) < nlmsg_total_size(payload)))
+		return NULL;
+
+	return __nlmsg_put(skb, pid, seq, type, payload, flags);
+}
+
+/**
+ * nlmsg_put_answer - Add a new callback based netlink message to an skb
+ * @skb: socket buffer to store message in
+ * @cb: netlink callback
+ * @type: message type
+ * @payload: length of message payload
+ * @flags: message flags
+ *
+ * Returns NULL if the tailroom of the skb is insufficient to store
+ * the message header and payload.
+ */
+static inline struct nlmsghdr *nlmsg_put_answer(struct sk_buff *skb,
+						struct netlink_callback *cb,
+						int type, int payload,
+						int flags)
+{
+	return nlmsg_put(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
+			 type, payload, flags);
+}
+
+/**
+ * nlmsg_new - Allocate a new netlink message
+ * @size: maximum size of message
+ *
+ * Use NLMSG_GOODSIZE if size isn't know and you need a good default size.
+ */
+static inline struct sk_buff *nlmsg_new(int size)
+{
+	return alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
+}
+
+/**
+ * nlmsg_end - Finalize a netlink message
+ * @skb: socket buffer the message is stored in
+ * @nlh: netlink message header
+ *
+ * Corrects the netlink message header to include the appeneded
+ * attributes. Only necessary if attributes have been added to
+ * the message.
+ *
+ * Returns the total data length of the skb.
+ */
+static inline int nlmsg_end(struct sk_buff *skb, struct nlmsghdr *nlh)
+{
+	nlh->nlmsg_len = skb->tail - (unsigned char *) nlh;
+
+	return skb->len;
+}
+
+/**
+ * nlmsg_cancel - Cancel construction of a netlink message
+ * @skb: socket buffer the message is stored in
+ * @nlh: netlink message header
+ *
+ * Removes the complete netlink message including all
+ * attributes from the socket buffer again. Returns -1.
+ */
+static inline int nlmsg_cancel(struct sk_buff *skb, struct nlmsghdr *nlh)
+{
+	skb_trim(skb, (unsigned char *) nlh - skb->data);
+
+	return -1;
+}
+
+/**
+ * nlmsg_free - free a netlink message
+ * @skb: socket buffer of netlink message
+ */
+static inline void nlmsg_free(struct sk_buff *skb)
+{
+	kfree_skb(skb);
+}
+
+/**
+ * nlmsg_multicast - multicast a netlink message
+ * @sk: netlink socket to spread messages to
+ * @skb: netlink message as socket buffer
+ * @pid: own netlink pid to avoid sending to yourself
+ * @group: multicast group id
+ */
+static inline int nlmsg_multicast(struct sock *sk, struct sk_buff *skb,
+				  u32 pid, unsigned int group)
+{
+	int err;
+
+	NETLINK_CB(skb).dst_group = group;
+
+	err = netlink_broadcast(sk, skb, pid, group, GFP_KERNEL);
+	if (err > 0)
+		err = 0;
+
+	return err;
+}
+
+/**
+ * nlmsg_unicast - unicast a netlink message
+ * @sk: netlink socket to spread message to
+ * @skb: netlink message as socket buffer
+ * @pid: netlink pid of the destination socket
+ */
+static inline int nlmsg_unicast(struct sock *sk, struct sk_buff *skb, u32 pid)
+{
+	int err;
+
+	err = netlink_unicast(sk, skb, pid, MSG_DONTWAIT);
+	if (err > 0)
+		err = 0;
+
+	return err;
+}
+
+/**
+ * nlmsg_for_each_msg - iterate over a stream of messages
+ * @pos: loop counter, set to current message
+ * @head: head of message stream
+ * @len: length of message stream
+ * @rem: initialized to len, holds bytes currently remaining in stream
+ */
+#define nlmsg_for_each_msg(pos, head, len, rem) \
+	for (pos = head, rem = len; \
+	     nlmsg_ok(pos, rem); \
+	     pos = nlmsg_next(pos, &(rem)))
+
+/**************************************************************************
+ * Netlink Attributes
+ **************************************************************************/
+
+/**
+ * nla_attr_size - length of attribute not including padding
+ * @payload: length of payload
+ */
+static inline int nla_attr_size(int payload)
+{
+	return NLA_HDRLEN + payload;
+}
+
+/**
+ * nla_total_size - total length of attribute including padding
+ * @payload: length of payload
+ */
+static inline int nla_total_size(int payload)
+{
+	return NLA_ALIGN(nla_attr_size(payload));
+}
+
+/**
+ * nla_padlen - length of padding at the tail of attribute
+ * @payload: length of payload
+ */
+static inline int nla_padlen(int payload)
+{
+	return nla_total_size(payload) - nla_attr_size(payload);
+}
+
+/**
+ * nla_data - head of payload
+ * @nla: netlink attribute
+ */
+static inline void *nla_data(const struct nlattr *nla)
+{
+	return (char *) nla + NLA_HDRLEN;
+}
+
+/**
+ * nla_len - length of payload
+ * @nla: netlink attribute
+ */
+static inline int nla_len(const struct nlattr *nla)
+{
+	return nla->nla_len - NLA_HDRLEN;
+}
+
+/**
+ * nla_ok - check if the netlink attribute fits into the remaining bytes
+ * @nla: netlink attribute
+ * @remaining: number of bytes remaining in attribute stream
+ */
+static inline int nla_ok(const struct nlattr *nla, int remaining)
+{
+	return remaining >= sizeof(*nla) &&
+	       nla->nla_len >= sizeof(*nla) &&
+	       nla->nla_len <= remaining;
+}
+
+/**
+ * nla_next - next netlink attribte in attribute stream
+ * @nla: netlink attribute
+ * @remaining: number of bytes remaining in attribute stream
+ *
+ * Returns the next netlink attribute in the attribute stream and
+ * decrements remaining by the size of the current attribute.
+ */
+static inline struct nlattr *nla_next(const struct nlattr *nla, int *remaining)
+{
+	int totlen = NLA_ALIGN(nla->nla_len);
+
+	*remaining -= totlen;
+	return (struct nlattr *) ((char *) nla + totlen);
+}
+
+/**
+ * nla_parse_nested - parse nested attributes
+ * @tb: destination array with maxtype+1 elements
+ * @maxtype: maximum attribute type to be expected
+ * @nla: attribute containing the nested attributes
+ * @policy: validation policy
+ *
+ * See nla_parse()
+ */
+static inline int nla_parse_nested(struct nlattr *tb[], int maxtype,
+				   struct nlattr *nla,
+				   struct nla_policy *policy)
+{
+	return nla_parse(tb, maxtype, nla_data(nla), nla_len(nla), policy);
+}
+/**
+ * nla_put_u8 - Add a u16 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_u8(struct sk_buff *skb, int attrtype, u8 value)
+{
+	return nla_put(skb, attrtype, sizeof(u8), &value);
+}
+
+/**
+ * nla_put_u16 - Add a u16 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_u16(struct sk_buff *skb, int attrtype, u16 value)
+{
+	return nla_put(skb, attrtype, sizeof(u16), &value);
+}
+
+/**
+ * nla_put_u32 - Add a u32 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_u32(struct sk_buff *skb, int attrtype, u32 value)
+{
+	return nla_put(skb, attrtype, sizeof(u32), &value);
+}
+
+/**
+ * nla_put_64 - Add a u64 netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @value: numeric value
+ */
+static inline int nla_put_u64(struct sk_buff *skb, int attrtype, u64 value)
+{
+	return nla_put(skb, attrtype, sizeof(u64), &value);
+}
+
+/**
+ * nla_put_string - Add a string netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @str: NUL terminated string
+ */
+static inline int nla_put_string(struct sk_buff *skb, int attrtype,
+				 const char *str)
+{
+	return nla_put(skb, attrtype, strlen(str) + 1, str);
+}
+
+/**
+ * nla_put_flag - Add a flag netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ */
+static inline int nla_put_flag(struct sk_buff *skb, int attrtype)
+{
+	return nla_put(skb, attrtype, 0, NULL);
+}
+
+/**
+ * nla_put_msecs - Add a msecs netlink attribute to a socket buffer
+ * @skb: socket buffer to add attribute to
+ * @attrtype: attribute type
+ * @jiffies: number of msecs in jiffies
+ */
+static inline int nla_put_msecs(struct sk_buff *skb, int attrtype,
+				unsigned long jiffies)
+{
+	u64 tmp = jiffies_to_msecs(jiffies);
+	return nla_put(skb, attrtype, sizeof(u64), &tmp);
+}
+
+#define NLA_PUT(skb, attrtype, attrlen, data) \
+	do { \
+		if (nla_put(skb, attrtype, attrlen, data) < 0) \
+			goto nla_put_failure; \
+	} while(0)
+
+#define NLA_PUT_TYPE(skb, type, attrtype, value) \
+	do { \
+		type __tmp = value; \
+		NLA_PUT(skb, attrtype, sizeof(type), &__tmp); \
+	} while(0)
+
+#define NLA_PUT_U8(skb, attrtype, value) \
+	NLA_PUT_TYPE(skb, u8, attrtype, value)
+
+#define NLA_PUT_U16(skb, attrtype, value) \
+	NLA_PUT_TYPE(skb, u16, attrtype, value)
+
+#define NLA_PUT_U32(skb, attrtype, value) \
+	NLA_PUT_TYPE(skb, u32, attrtype, value)
+
+#define NLA_PUT_U64(skb, attrtype, value) \
+	NLA_PUT_TYPE(skb, u64, attrtype, value)
+
+#define NLA_PUT_STRING(skb, attrtype, value) \
+	NLA_PUT(skb, attrtype, strlen(value) + 1, value)
+
+#define NLA_PUT_FLAG(skb, attrtype, value) \
+	NLA_PUT(skb, attrtype, 0, NULL)
+
+#define NLA_PUT_MSECS(skb, attrtype, jiffies) \
+	NLA_PUT_U64(skb, attrtype, jiffies_to_msecs(jiffies))
+
+/**
+ * nla_get_u32 - return payload of u32 attribute
+ * @nla: u32 netlink attribute
+ */
+static inline u32 nla_get_u32(struct nlattr *nla)
+{
+	return *(u32 *) nla_data(nla);
+}
+
+/**
+ * nla_get_u16 - return payload of u16 attribute
+ * @nla: u16 netlink attribute
+ */
+static inline u16 nla_get_u16(struct nlattr *nla)
+{
+	return *(u16 *) nla_data(nla);
+}
+
+/**
+ * nla_get_u8 - return payload of u8 attribute
+ * @nla: u8 netlink attribute
+ */
+static inline u8 nla_get_u8(struct nlattr *nla)
+{
+	return *(u8 *) nla_data(nla);
+}
+
+/**
+ * nla_get_u64 - return payload of u64 attribute
+ * @nla: u64 netlink attribute
+ */
+static inline u64 nla_get_u64(struct nlattr *nla)
+{
+	u64 tmp;
+
+	nla_memcpy(&tmp, nla, sizeof(tmp));
+
+	return tmp;
+}
+
+/**
+ * nla_get_flag - return payload of flag attribute
+ * @nla: flag netlink attribute
+ */
+static inline int nla_get_flag(struct nlattr *nla)
+{
+	return !!nla;
+}
+
+/**
+ * nla_get_msecs - return payload of msecs attribute
+ * @nla: msecs netlink attribute
+ *
+ * Returns the number of milliseconds in jiffies.
+ */
+static inline unsigned long nla_get_msecs(struct nlattr *nla)
+{
+	u64 msecs = nla_get_u64(nla);
+
+	return msecs_to_jiffies((unsigned long) msecs);
+}
+
+/**
+ * nla_nest_start - Start a new level of nested attributes
+ * @skb: socket buffer to add attributes to
+ * @attrtype: attribute type of container
+ *
+ * Returns the container attribute
+ */
+static inline struct nlattr *nla_nest_start(struct sk_buff *skb, int attrtype)
+{
+	struct nlattr *start = (struct nlattr *) skb->tail;
+
+	if (nla_put(skb, attrtype, 0, NULL) < 0)
+		return NULL;
+
+	return start;
+}
+
+/**
+ * nla_nest_end - Finalize nesting of attributes
+ * @skb: socket buffer the attribtues are stored in
+ * @start: container attribute
+ *
+ * Corrects the container attribute header to include the all
+ * appeneded attributes.
+ *
+ * Returns the total data length of the skb.
+ */
+static inline int nla_nest_end(struct sk_buff *skb, struct nlattr *start)
+{
+	start->nla_len = skb->tail - (unsigned char *) start;
+	return skb->len;
+}
+
+/**
+ * nla_nest_cancel - Cancel nesting of attributes
+ * @skb: socket buffer the message is stored in
+ * @start: container attribute
+ *
+ * Removes the container attribute and including all nested
+ * attributes. Returns -1.
+ */
+static inline int nla_nest_cancel(struct sk_buff *skb, struct nlattr *start)
+{
+	if (start)
+		skb_trim(skb, (unsigned char *) start - skb->data);
+
+	return -1;
+}
+
+/**
+ * nla_for_each_attr - iterate over a stream of attributes
+ * @pos: loop counter, set to current attribute
+ * @head: head of attribute stream
+ * @len: length of attribute stream
+ * @rem: initialized to len, holds bytes currently remaining in stream
+ */
+#define nla_for_each_attr(pos, head, len, rem) \
+	for (pos = head, rem = len; \
+	     nla_ok(pos, rem); \
+	     pos = nla_next(pos, &(rem)))
+
+#endif
diff --git a/include/net/tcp.h b/include/net/tcp.h
index c24339c4e31..96cc3b434e4 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -27,6 +27,7 @@
 #include <linux/slab.h>
 #include <linux/cache.h>
 #include <linux/percpu.h>
+#include <linux/skbuff.h>
 
 #include <net/inet_connection_sock.h>
 #include <net/inet_timewait_sock.h>
@@ -852,7 +853,7 @@ static __inline__ u16 tcp_v4_check(struct tcphdr *th, int len,
 
 static __inline__ int __tcp_checksum_complete(struct sk_buff *skb)
 {
-	return (unsigned short)csum_fold(skb_checksum(skb, 0, skb->len, skb->csum));
+	return __skb_checksum_complete(skb);
 }
 
 static __inline__ int tcp_checksum_complete(struct sk_buff *skb)