[TIPC] Initial merge

TIPC (Transparent Inter Process Communication) is a protocol designed for
intra cluster communication. For more information see
http://tipc.sourceforge.net

Signed-off-by: Per Liden <per.liden@nospam.ericsson.com>

4 files changed, 672 insertions, 0 deletions

diff --git a/include/net/tipc/tipc.h b/include/net/tipc/tipc.h
new file mode 100644
index 0000000..1d4d8d0
--- /dev/null
+++ b/include/net/tipc/tipc.h
@@ -0,0 +1,255 @@
+/*
+ * include/net/tipc/tipc.h: Main include file for TIPC users
+ * 
+ * Copyright (c) 2003-2005, Ericsson Research Canada
+ * Copyright (c) 2005, Wind River Systems
+ * Copyright (c) 2005-2006, Ericsson AB
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this 
+ * list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice, 
+ * this list of conditions and the following disclaimer in the documentation 
+ * and/or other materials provided with the distribution.
+ * Neither the names of the copyright holders nor the names of its 
+ * contributors may be used to endorse or promote products derived from this 
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _NET_TIPC_H_
+#define _NET_TIPC_H_
+
+#ifdef __KERNEL__
+
+#include <linux/tipc.h>
+#include <linux/skbuff.h>
+
+/* 
+ * Native API
+ * ----------
+ */
+
+/*
+ * TIPC operating mode routines
+ */
+
+u32 tipc_get_addr(void);
+
+#define TIPC_NOT_RUNNING  0
+#define TIPC_NODE_MODE    1
+#define TIPC_NET_MODE     2
+
+typedef void (*tipc_mode_event)(void *usr_handle, int mode, u32 addr);
+
+int tipc_attach(unsigned int *userref, tipc_mode_event, void *usr_handle);
+
+void tipc_detach(unsigned int userref);
+
+int tipc_get_mode(void);
+
+/*
+ * TIPC port manipulation routines
+ */
+
+typedef void (*tipc_msg_err_event) (void *usr_handle,
+				    u32 portref,
+				    struct sk_buff **buf,
+				    unsigned char const *data,
+				    unsigned int size,
+				    int reason, 
+				    struct tipc_portid const *attmpt_destid);
+
+typedef void (*tipc_named_msg_err_event) (void *usr_handle,
+					  u32 portref,
+					  struct sk_buff **buf,
+					  unsigned char const *data,
+					  unsigned int size,
+					  int reason, 
+					  struct tipc_name_seq const *attmpt_dest);
+
+typedef void (*tipc_conn_shutdown_event) (void *usr_handle,
+					  u32 portref,
+					  struct sk_buff **buf,
+					  unsigned char const *data,
+					  unsigned int size,
+					  int reason);
+
+typedef void (*tipc_msg_event) (void *usr_handle,
+				u32 portref,
+				struct sk_buff **buf,
+				unsigned char const *data,
+				unsigned int size,
+				unsigned int importance, 
+				struct tipc_portid const *origin);
+
+typedef void (*tipc_named_msg_event) (void *usr_handle,
+				      u32 portref,
+				      struct sk_buff **buf,
+				      unsigned char const *data,
+				      unsigned int size,
+				      unsigned int importance, 
+				      struct tipc_portid const *orig,
+				      struct tipc_name_seq const *dest);
+
+typedef void (*tipc_conn_msg_event) (void *usr_handle,
+				     u32 portref,
+				     struct sk_buff **buf,
+				     unsigned char const *data,
+				     unsigned int size);
+
+typedef void (*tipc_continue_event) (void *usr_handle, 
+				     u32 portref);
+
+int tipc_createport(unsigned int tipc_user, 
+		    void *usr_handle, 
+		    unsigned int importance, 
+		    tipc_msg_err_event error_cb, 
+		    tipc_named_msg_err_event named_error_cb, 
+		    tipc_conn_shutdown_event conn_error_cb, 
+		    tipc_msg_event message_cb, 
+		    tipc_named_msg_event named_message_cb, 
+		    tipc_conn_msg_event conn_message_cb, 
+		    tipc_continue_event continue_event_cb,/* May be zero */
+		    u32 *portref);
+
+int tipc_deleteport(u32 portref);
+
+int tipc_ownidentity(u32 portref, struct tipc_portid *port);
+
+int tipc_portimportance(u32 portref, unsigned int *importance);
+int tipc_set_portimportance(u32 portref, unsigned int importance);
+
+int tipc_portunreliable(u32 portref, unsigned int *isunreliable);
+int tipc_set_portunreliable(u32 portref, unsigned int isunreliable);
+
+int tipc_portunreturnable(u32 portref, unsigned int *isunreturnable);
+int tipc_set_portunreturnable(u32 portref, unsigned int isunreturnable);
+
+int tipc_publish(u32 portref, unsigned int scope, 
+		 struct tipc_name_seq const *name_seq);
+int tipc_withdraw(u32 portref, unsigned int scope,
+		  struct tipc_name_seq const *name_seq); /* 0: all */
+
+int tipc_connect2port(u32 portref, struct tipc_portid const *port);
+
+int tipc_disconnect(u32 portref);
+
+int tipc_shutdown(u32 ref); /* Sends SHUTDOWN msg */
+
+int tipc_isconnected(u32 portref, int *isconnected);
+
+int tipc_peer(u32 portref, struct tipc_portid *peer);
+
+int tipc_ref_valid(u32 portref); 
+
+/*
+ * TIPC messaging routines
+ */
+
+#define TIPC_PORT_IMPORTANCE 100	/* send using current port setting */
+
+
+int tipc_send(u32 portref,
+	      unsigned int num_sect,
+	      struct iovec const *msg_sect);
+
+int tipc_send_buf(u32 portref,
+		  struct sk_buff *buf,
+		  unsigned int dsz);
+
+int tipc_send2name(u32 portref, 
+		   struct tipc_name const *name, 
+		   u32 domain,	/* 0:own zone */
+		   unsigned int num_sect,
+		   struct iovec const *msg_sect);
+
+int tipc_send_buf2name(u32 portref,
+		       struct tipc_name const *name,
+		       u32 domain,
+		       struct sk_buff *buf,
+		       unsigned int dsz);
+
+int tipc_forward2name(u32 portref, 
+		      struct tipc_name const *name, 
+		      u32 domain,   /*0: own zone */
+		      unsigned int section_count,
+		      struct iovec const *msg_sect,
+		      struct tipc_portid const *origin,
+		      unsigned int importance);
+
+int tipc_forward_buf2name(u32 portref,
+			  struct tipc_name const *name,
+			  u32 domain,
+			  struct sk_buff *buf,
+			  unsigned int dsz,
+			  struct tipc_portid const *orig,
+			  unsigned int importance);
+
+int tipc_send2port(u32 portref,
+		   struct tipc_portid const *dest,
+		   unsigned int num_sect,
+		   struct iovec const *msg_sect);
+
+int tipc_send_buf2port(u32 portref,
+		       struct tipc_portid const *dest,
+		       struct sk_buff *buf,
+		       unsigned int dsz);
+
+int tipc_forward2port(u32 portref,
+		      struct tipc_portid const *dest,
+		      unsigned int num_sect,
+		      struct iovec const *msg_sect,
+		      struct tipc_portid const *origin,
+		      unsigned int importance);
+
+int tipc_forward_buf2port(u32 portref,
+			  struct tipc_portid const *dest,
+			  struct sk_buff *buf,
+			  unsigned int dsz,
+			  struct tipc_portid const *orig,
+			  unsigned int importance);
+
+int tipc_multicast(u32 portref, 
+		   struct tipc_name_seq const *seq, 
+		   u32 domain,	/* 0:own zone */
+		   unsigned int section_count,
+		   struct iovec const *msg);
+
+#if 0
+int tipc_multicast_buf(u32 portref, 
+		       struct tipc_name_seq const *seq, 
+		       u32 domain,	/* 0:own zone */
+		       void *buf,
+		       unsigned int size);
+#endif
+
+/*
+ * TIPC subscription routines
+ */
+
+int tipc_ispublished(struct tipc_name const *name);
+
+/*
+ * Get number of available nodes within specified domain (excluding own node)
+ */
+
+unsigned int tipc_available_nodes(const u32 domain);
+
+#endif
+
+#endif
diff --git a/include/net/tipc/tipc_bearer.h b/include/net/tipc/tipc_bearer.h
new file mode 100644
index 0000000..a3daf69
--- /dev/null
+++ b/include/net/tipc/tipc_bearer.h
@@ -0,0 +1,92 @@
+/*
+ * include/net/tipc/tipc_bearer.h: Include file for privileged access to TIPC bearers
+ * 
+ * Copyright (c) 2003-2005, Ericsson Research Canada
+ * Copyright (c) 2005, Wind River Systems
+ * Copyright (c) 2005-2006, Ericsson AB
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this 
+ * list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice, 
+ * this list of conditions and the following disclaimer in the documentation 
+ * and/or other materials provided with the distribution.
+ * Neither the names of the copyright holders nor the names of its 
+ * contributors may be used to endorse or promote products derived from this 
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _NET_TIPC_BEARER_H_
+#define _NET_TIPC_BEARER_H_
+
+#ifdef __KERNEL__
+
+#include <linux/tipc.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+
+/**
+ * struct tipc_bearer - TIPC bearer info available to privileged users
+ * @usr_handle: pointer to additional user-defined information about bearer
+ * @mtu: max packet size bearer can support
+ * @blocked: non-zero if bearer is blocked
+ * @lock: spinlock for controlling access to bearer
+ * @addr: media-specific address associated with bearer
+ * @name: bearer name (format = media:interface)
+ * 
+ * Note: TIPC initializes "name" and "lock" fields; user is responsible for
+ * initialization all other fields when a bearer is enabled.
+ */
+
+struct tipc_bearer {
+	void *usr_handle;
+	u32 mtu;
+	int blocked;
+	spinlock_t lock;
+	struct tipc_media_addr addr;
+	char name[TIPC_MAX_BEARER_NAME];
+};
+
+
+int  tipc_register_media(u32 media_type,
+			 char *media_name, 
+			 int (*enable)(struct tipc_bearer *), 
+			 void (*disable)(struct tipc_bearer *), 
+			 int (*send_msg)(struct sk_buff *, 
+					 struct tipc_bearer *,
+					 struct tipc_media_addr *), 
+			 char *(*addr2str)(struct tipc_media_addr *a,
+					   char *str_buf,
+					   int str_size),
+			 struct tipc_media_addr *bcast_addr,
+			 const u32 bearer_priority,
+			 const u32 link_tolerance,  /* [ms] */
+			 const u32 send_window_limit); 
+
+void tipc_recv_msg(struct sk_buff *buf, struct tipc_bearer *tb_ptr);
+
+int  tipc_block_bearer(const char *name);
+void tipc_continue(struct tipc_bearer *tb_ptr); 
+
+int tipc_enable_bearer(const char *bearer_name, u32 bcast_scope, u32 priority);
+int tipc_disable_bearer(const char *name);
+
+
+#endif
+
+#endif
diff --git a/include/net/tipc/tipc_msg.h b/include/net/tipc/tipc_msg.h
new file mode 100644
index 0000000..78513f5
--- /dev/null
+++ b/include/net/tipc/tipc_msg.h
@@ -0,0 +1,220 @@
+/*
+ * include/net/tipc/tipc_msg.h: Include file for privileged access to TIPC message headers
+ * 
+ * Copyright (c) 2003-2005, Ericsson Research Canada
+ * Copyright (c) 2005, Wind River Systems
+ * Copyright (c) 2005-2006, Ericsson AB
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this 
+ * list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice, 
+ * this list of conditions and the following disclaimer in the documentation 
+ * and/or other materials provided with the distribution.
+ * Neither the names of the copyright holders nor the names of its 
+ * contributors may be used to endorse or promote products derived from this 
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _NET_TIPC_MSG_H_
+#define _NET_TIPC_MSG_H_
+
+#ifdef __KERNEL__
+
+struct tipc_msg {
+	u32 hdr[15];
+};
+
+
+/*
+		TIPC user data message header format, version 2:
+
+
+       1 0 9 8 7 6 5 4|3 2 1 0 9 8 7 6|5 4 3 2 1 0 9 8|7 6 5 4 3 2 1 0 
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   w0:|vers | user  |hdr sz |n|d|s|-|          message size           |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   w1:|mstyp| error |rer cnt|lsc|opt p|      broadcast ack no         |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   w2:|        link level ack no      |   broadcast/link level seq no |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   w3:|                       previous node                           |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   w4:|                      originating port                         |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   w5:|                      destination port                         |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+    
+   w6:|                      originating node                         |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   w7:|                      destination node                         |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   w8:|            name type / transport sequence number              |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+   w9:|              name instance/multicast lower bound              |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+    
+   wA:|                    multicast upper bound                      |
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+    
+      /                                                               /
+      \                           options                             \
+      /                                                               /
+      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+*/
+
+#define TIPC_CONN_MSG	0
+#define TIPC_MCAST_MSG	1
+#define TIPC_NAMED_MSG	2
+#define TIPC_DIRECT_MSG	3
+
+
+static inline u32 msg_word(struct tipc_msg *m, u32 pos)
+{
+	return ntohl(m->hdr[pos]);
+}
+
+static inline u32 msg_bits(struct tipc_msg *m, u32 w, u32 pos, u32 mask)
+{
+	return (msg_word(m, w) >> pos) & mask;
+}
+
+static inline u32 msg_importance(struct tipc_msg *m)
+{
+	return msg_bits(m, 0, 25, 0xf);
+}
+
+static inline u32 msg_hdr_sz(struct tipc_msg *m)
+{
+	return msg_bits(m, 0, 21, 0xf) << 2;
+}
+
+static inline int msg_short(struct tipc_msg *m)
+{
+	return (msg_hdr_sz(m) == 24);
+}
+
+static inline u32 msg_size(struct tipc_msg *m)
+{
+	return msg_bits(m, 0, 0, 0x1ffff);
+}
+
+static inline u32 msg_data_sz(struct tipc_msg *m)
+{
+	return (msg_size(m) - msg_hdr_sz(m));
+}
+
+static inline unchar *msg_data(struct tipc_msg *m)
+{
+	return ((unchar *)m) + msg_hdr_sz(m);
+}
+
+static inline u32 msg_type(struct tipc_msg *m)
+{
+	return msg_bits(m, 1, 29, 0x7);
+}
+
+static inline u32 msg_direct(struct tipc_msg *m)
+{
+	return (msg_type(m) == TIPC_DIRECT_MSG);
+}
+
+static inline u32 msg_named(struct tipc_msg *m)
+{
+	return (msg_type(m) == TIPC_NAMED_MSG);
+}
+
+static inline u32 msg_mcast(struct tipc_msg *m)
+{
+	return (msg_type(m) == TIPC_MCAST_MSG);
+}
+
+static inline u32 msg_connected(struct tipc_msg *m)
+{
+	return (msg_type(m) == TIPC_CONN_MSG);
+}
+
+static inline u32 msg_errcode(struct tipc_msg *m)
+{
+	return msg_bits(m, 1, 25, 0xf);
+}
+
+static inline u32 msg_prevnode(struct tipc_msg *m)
+{
+	return msg_word(m, 3);
+}
+
+static inline u32 msg_origport(struct tipc_msg *m)
+{
+	return msg_word(m, 4);
+}
+
+static inline u32 msg_destport(struct tipc_msg *m)
+{
+	return msg_word(m, 5);
+}
+
+static inline u32 msg_mc_netid(struct tipc_msg *m)
+{
+	return msg_word(m, 5);
+}
+
+static inline u32 msg_orignode(struct tipc_msg *m)
+{
+	if (likely(msg_short(m)))
+		return msg_prevnode(m);
+	return msg_word(m, 6);
+}
+
+static inline u32 msg_destnode(struct tipc_msg *m)
+{
+	return msg_word(m, 7);
+}
+
+static inline u32 msg_nametype(struct tipc_msg *m)
+{
+	return msg_word(m, 8);
+}
+
+static inline u32 msg_nameinst(struct tipc_msg *m)
+{
+	return msg_word(m, 9);
+}
+
+static inline u32 msg_namelower(struct tipc_msg *m)
+{
+	return msg_nameinst(m);
+}
+
+static inline u32 msg_nameupper(struct tipc_msg *m)
+{
+	return msg_word(m, 10);
+}
+
+static inline char *msg_options(struct tipc_msg *m, u32 *len)
+{
+	u32 pos = msg_bits(m, 1, 16, 0x7);
+
+	if (!pos)
+		return 0;
+	pos = (pos * 4) + 28;
+	*len = msg_hdr_sz(m) - pos;
+	return (char *)&m->hdr[pos/4];
+}
+
+#endif
+
+#endif
diff --git a/include/net/tipc/tipc_port.h b/include/net/tipc/tipc_port.h
new file mode 100644
index 0000000..ec0f0de
--- /dev/null
+++ b/include/net/tipc/tipc_port.h
@@ -0,0 +1,105 @@
+/*
+ * include/net/tipc/tipc_port.h: Include file for privileged access to TIPC ports
+ * 
+ * Copyright (c) 2003-2005, Ericsson Research Canada
+ * Copyright (c) 2005, Wind River Systems
+ * Copyright (c) 2005-2006, Ericsson AB
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this 
+ * list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice, 
+ * this list of conditions and the following disclaimer in the documentation 
+ * and/or other materials provided with the distribution.
+ * Neither the names of the copyright holders nor the names of its 
+ * contributors may be used to endorse or promote products derived from this 
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _NET_TIPC_PORT_H_
+#define _NET_TIPC_PORT_H_
+
+#ifdef __KERNEL__
+
+#include <linux/tipc.h>
+#include <linux/skbuff.h>
+#include <net/tipc/tipc_msg.h>
+
+#define TIPC_FLOW_CONTROL_WIN 512
+
+/**
+ * struct tipc_port - native TIPC port info available to privileged users
+ * @usr_handle: pointer to additional user-defined information about port
+ * @lock: pointer to spinlock for controlling access to port
+ * @connected: non-zero if port is currently connected to a peer port
+ * @conn_type: TIPC type used when connection was established
+ * @conn_instance: TIPC instance used when connection was established
+ * @conn_unacked: number of unacknowledged messages received from peer port
+ * @published: non-zero if port has one or more associated names
+ * @congested: non-zero if cannot send because of link or port congestion
+ * @ref: unique reference to port in TIPC object registry
+ * @phdr: preformatted message header used when sending messages
+ */
+
+struct tipc_port {
+        void *usr_handle;
+        spinlock_t *lock;
+	int connected;
+        u32 conn_type;
+        u32 conn_instance;
+	u32 conn_unacked;
+	int published;
+	u32 congested;
+	u32 ref;
+	struct tipc_msg phdr;
+};
+
+
+/**
+ * tipc_createport_raw - create a native TIPC port and return it's reference
+ *
+ * Note: 'dispatcher' and 'wakeup' deliver a locked port.
+ */
+
+u32 tipc_createport_raw(void *usr_handle,
+			u32 (*dispatcher)(struct tipc_port *, struct sk_buff *),
+			void (*wakeup)(struct tipc_port *),
+			const u32 importance);
+
+/*
+ * tipc_set_msg_option(): port must be locked.
+ */
+int tipc_set_msg_option(struct tipc_port *tp_ptr,
+			const char *opt,
+			const u32 len);
+
+int tipc_reject_msg(struct sk_buff *buf, u32 err);
+
+int tipc_send_buf_fast(struct sk_buff *buf, u32 destnode);
+
+void tipc_acknowledge(u32 port_ref,u32 ack);
+
+struct tipc_port *tipc_get_port(const u32 ref);
+
+void *tipc_get_handle(const u32 ref);
+
+
+#endif
+
+#endif
+