2 * net/tipc/port.c: TIPC port code
4 * Copyright (c) 2003-2005, Ericsson Research Canada
5 * Copyright (c) 2004-2005, Wind River Systems
6 * Copyright (c) 2005-2006, Ericsson AB
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the names of the copyright holders nor the names of its
18 * contributors may be used to endorse or promote products derived from
19 * this software without specific prior written permission.
21 * Alternatively, this software may be distributed under the terms of the
22 * GNU General Public License ("GPL") version 2 as published by the Free
23 * Software Foundation.
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
29 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
46 #include "name_table.h"
51 /* Connection management: */
52 #define PROBING_INTERVAL 3600000 /* [ms] => 1 h */
56 #define MAX_REJECT_SIZE 1024
58 static struct sk_buff
*msg_queue_head
= 0;
59 static struct sk_buff
*msg_queue_tail
= 0;
61 spinlock_t port_list_lock
= SPIN_LOCK_UNLOCKED
;
62 static spinlock_t queue_lock
= SPIN_LOCK_UNLOCKED
;
65 static void port_handle_node_down(unsigned long ref
);
66 static struct sk_buff
* port_build_self_abort_msg(struct port
*,u32 err
);
67 static struct sk_buff
* port_build_peer_abort_msg(struct port
*,u32 err
);
68 static void port_timeout(unsigned long ref
);
71 static inline u32
port_peernode(struct port
*p_ptr
)
73 return msg_destnode(&p_ptr
->publ
.phdr
);
76 static inline u32
port_peerport(struct port
*p_ptr
)
78 return msg_destport(&p_ptr
->publ
.phdr
);
81 static inline u32
port_out_seqno(struct port
*p_ptr
)
83 return msg_transp_seqno(&p_ptr
->publ
.phdr
);
86 static inline void port_set_out_seqno(struct port
*p_ptr
, u32 seqno
)
88 msg_set_transp_seqno(&p_ptr
->publ
.phdr
,seqno
);
91 static inline void port_incr_out_seqno(struct port
*p_ptr
)
93 struct tipc_msg
*m
= &p_ptr
->publ
.phdr
;
95 if (likely(!msg_routed(m
)))
97 msg_set_transp_seqno(m
, (msg_transp_seqno(m
) + 1));
101 * tipc_multicast - send a multicast message to local and remote destinations
104 int tipc_multicast(u32 ref
, struct tipc_name_seq
const *seq
, u32 domain
,
105 u32 num_sect
, struct iovec
const *msg_sect
)
107 struct tipc_msg
*hdr
;
109 struct sk_buff
*ibuf
= NULL
;
110 struct port_list dports
= {0, NULL
, };
111 struct port
*oport
= port_deref(ref
);
115 if (unlikely(!oport
))
118 /* Create multicast message */
120 hdr
= &oport
->publ
.phdr
;
121 msg_set_type(hdr
, TIPC_MCAST_MSG
);
122 msg_set_nametype(hdr
, seq
->type
);
123 msg_set_namelower(hdr
, seq
->lower
);
124 msg_set_nameupper(hdr
, seq
->upper
);
125 msg_set_hdr_sz(hdr
, MCAST_H_SIZE
);
126 res
= msg_build(hdr
, msg_sect
, num_sect
, MAX_MSG_SIZE
,
127 !oport
->user_port
, &buf
);
131 /* Figure out where to send multicast message */
133 ext_targets
= nametbl_mc_translate(seq
->type
, seq
->lower
, seq
->upper
,
134 TIPC_NODE_SCOPE
, &dports
);
136 /* Send message to destinations (duplicate it only if necessary) */
139 if (dports
.count
!= 0) {
140 ibuf
= skb_copy(buf
, GFP_ATOMIC
);
142 port_list_free(&dports
);
147 res
= bclink_send_msg(buf
);
148 if ((res
< 0) && (dports
.count
!= 0)) {
157 port_recv_mcast(ibuf
, &dports
);
159 port_list_free(&dports
);
165 * port_recv_mcast - deliver multicast message to all destination ports
167 * If there is no port list, perform a lookup to create one
170 void port_recv_mcast(struct sk_buff
*buf
, struct port_list
*dp
)
172 struct tipc_msg
* msg
;
173 struct port_list dports
= {0, NULL
, };
174 struct port_list
*item
= dp
;
180 /* Create destination port list, if one wasn't supplied */
183 nametbl_mc_translate(msg_nametype(msg
),
191 /* Deliver a copy of message to each destination port */
193 if (dp
->count
!= 0) {
194 if (dp
->count
== 1) {
195 msg_set_destport(msg
, dp
->ports
[0]);
200 for (; cnt
< dp
->count
; cnt
++) {
201 int index
= cnt
% PLSIZE
;
202 struct sk_buff
*b
= skb_clone(buf
, GFP_ATOMIC
);
205 warn("Buffer allocation failure\n");
206 msg_dbg(msg
, "LOST:");
209 if ((index
== 0) && (cnt
!= 0)) {
212 msg_set_destport(buf_msg(b
),item
->ports
[index
]);
222 * tipc_createport_raw - create a native TIPC port
224 * Returns local port reference
227 u32
tipc_createport_raw(void *usr_handle
,
228 u32 (*dispatcher
)(struct tipc_port
*, struct sk_buff
*),
229 void (*wakeup
)(struct tipc_port
*),
230 const u32 importance
)
233 struct tipc_msg
*msg
;
236 p_ptr
= kmalloc(sizeof(*p_ptr
), GFP_ATOMIC
);
238 warn("Memory squeeze; failed to create port\n");
241 memset(p_ptr
, 0, sizeof(*p_ptr
));
242 ref
= ref_acquire(p_ptr
, &p_ptr
->publ
.lock
);
244 warn("Reference Table Exhausted\n");
250 p_ptr
->publ
.ref
= ref
;
251 msg
= &p_ptr
->publ
.phdr
;
252 msg_init(msg
, DATA_LOW
, TIPC_NAMED_MSG
, TIPC_OK
, LONG_H_SIZE
, 0);
253 msg_set_orignode(msg
, tipc_own_addr
);
254 msg_set_prevnode(msg
, tipc_own_addr
);
255 msg_set_origport(msg
, ref
);
256 msg_set_importance(msg
,importance
);
257 p_ptr
->last_in_seqno
= 41;
259 p_ptr
->publ
.usr_handle
= usr_handle
;
260 INIT_LIST_HEAD(&p_ptr
->wait_list
);
261 INIT_LIST_HEAD(&p_ptr
->subscription
.nodesub_list
);
262 p_ptr
->congested_link
= 0;
263 p_ptr
->max_pkt
= MAX_PKT_DEFAULT
;
264 p_ptr
->dispatcher
= dispatcher
;
265 p_ptr
->wakeup
= wakeup
;
266 p_ptr
->user_port
= 0;
267 k_init_timer(&p_ptr
->timer
, (Handler
)port_timeout
, ref
);
268 spin_lock_bh(&port_list_lock
);
269 INIT_LIST_HEAD(&p_ptr
->publications
);
270 INIT_LIST_HEAD(&p_ptr
->port_list
);
271 list_add_tail(&p_ptr
->port_list
, &ports
);
272 spin_unlock_bh(&port_list_lock
);
277 int tipc_deleteport(u32 ref
)
280 struct sk_buff
*buf
= 0;
282 tipc_withdraw(ref
, 0, 0);
283 p_ptr
= port_lock(ref
);
290 k_cancel_timer(&p_ptr
->timer
);
291 if (p_ptr
->publ
.connected
) {
292 buf
= port_build_peer_abort_msg(p_ptr
, TIPC_ERR_NO_PORT
);
293 nodesub_unsubscribe(&p_ptr
->subscription
);
295 if (p_ptr
->user_port
) {
296 reg_remove_port(p_ptr
->user_port
);
297 kfree(p_ptr
->user_port
);
300 spin_lock_bh(&port_list_lock
);
301 list_del(&p_ptr
->port_list
);
302 list_del(&p_ptr
->wait_list
);
303 spin_unlock_bh(&port_list_lock
);
304 k_term_timer(&p_ptr
->timer
);
306 dbg("Deleted port %u\n", ref
);
312 * tipc_get_port() - return port associated with 'ref'
314 * Note: Port is not locked.
317 struct tipc_port
*tipc_get_port(const u32 ref
)
319 return (struct tipc_port
*)ref_deref(ref
);
323 * tipc_get_handle - return user handle associated to port 'ref'
326 void *tipc_get_handle(const u32 ref
)
331 p_ptr
= port_lock(ref
);
334 handle
= p_ptr
->publ
.usr_handle
;
339 static inline int port_unreliable(struct port
*p_ptr
)
341 return msg_src_droppable(&p_ptr
->publ
.phdr
);
344 int tipc_portunreliable(u32 ref
, unsigned int *isunreliable
)
348 p_ptr
= port_lock(ref
);
351 *isunreliable
= port_unreliable(p_ptr
);
352 spin_unlock_bh(p_ptr
->publ
.lock
);
356 int tipc_set_portunreliable(u32 ref
, unsigned int isunreliable
)
360 p_ptr
= port_lock(ref
);
363 msg_set_src_droppable(&p_ptr
->publ
.phdr
, (isunreliable
!= 0));
368 static inline int port_unreturnable(struct port
*p_ptr
)
370 return msg_dest_droppable(&p_ptr
->publ
.phdr
);
373 int tipc_portunreturnable(u32 ref
, unsigned int *isunrejectable
)
377 p_ptr
= port_lock(ref
);
380 *isunrejectable
= port_unreturnable(p_ptr
);
381 spin_unlock_bh(p_ptr
->publ
.lock
);
385 int tipc_set_portunreturnable(u32 ref
, unsigned int isunrejectable
)
389 p_ptr
= port_lock(ref
);
392 msg_set_dest_droppable(&p_ptr
->publ
.phdr
, (isunrejectable
!= 0));
398 * port_build_proto_msg(): build a port level protocol
399 * or a connection abortion message. Called with
402 static struct sk_buff
*port_build_proto_msg(u32 destport
, u32 destnode
,
403 u32 origport
, u32 orignode
,
404 u32 usr
, u32 type
, u32 err
,
408 struct tipc_msg
*msg
;
410 buf
= buf_acquire(LONG_H_SIZE
);
413 msg_init(msg
, usr
, type
, err
, LONG_H_SIZE
, destnode
);
414 msg_set_destport(msg
, destport
);
415 msg_set_origport(msg
, origport
);
416 msg_set_destnode(msg
, destnode
);
417 msg_set_orignode(msg
, orignode
);
418 msg_set_transp_seqno(msg
, seqno
);
419 msg_set_msgcnt(msg
, ack
);
420 msg_dbg(msg
, "PORT>SEND>:");
425 int tipc_set_msg_option(struct tipc_port
*tp_ptr
, const char *opt
, const u32 sz
)
427 msg_expand(&tp_ptr
->phdr
, msg_destnode(&tp_ptr
->phdr
));
428 msg_set_options(&tp_ptr
->phdr
, opt
, sz
);
432 int tipc_reject_msg(struct sk_buff
*buf
, u32 err
)
434 struct tipc_msg
*msg
= buf_msg(buf
);
435 struct sk_buff
*rbuf
;
436 struct tipc_msg
*rmsg
;
438 u32 imp
= msg_importance(msg
);
439 u32 data_sz
= msg_data_sz(msg
);
441 if (data_sz
> MAX_REJECT_SIZE
)
442 data_sz
= MAX_REJECT_SIZE
;
443 if (msg_connected(msg
) && (imp
< TIPC_CRITICAL_IMPORTANCE
))
445 msg_dbg(msg
, "port->rej: ");
447 /* discard rejected message if it shouldn't be returned to sender */
448 if (msg_errcode(msg
) || msg_dest_droppable(msg
)) {
453 /* construct rejected message */
455 hdr_sz
= MCAST_H_SIZE
;
457 hdr_sz
= LONG_H_SIZE
;
458 rbuf
= buf_acquire(data_sz
+ hdr_sz
);
463 rmsg
= buf_msg(rbuf
);
464 msg_init(rmsg
, imp
, msg_type(msg
), err
, hdr_sz
, msg_orignode(msg
));
465 msg_set_destport(rmsg
, msg_origport(msg
));
466 msg_set_prevnode(rmsg
, tipc_own_addr
);
467 msg_set_origport(rmsg
, msg_destport(msg
));
469 msg_set_orignode(rmsg
, tipc_own_addr
);
471 msg_set_orignode(rmsg
, msg_destnode(msg
));
472 msg_set_size(rmsg
, data_sz
+ hdr_sz
);
473 msg_set_nametype(rmsg
, msg_nametype(msg
));
474 msg_set_nameinst(rmsg
, msg_nameinst(msg
));
475 memcpy(rbuf
->data
+ hdr_sz
, msg_data(msg
), data_sz
);
477 /* send self-abort message when rejecting on a connected port */
478 if (msg_connected(msg
)) {
479 struct sk_buff
*abuf
= 0;
480 struct port
*p_ptr
= port_lock(msg_destport(msg
));
483 if (p_ptr
->publ
.connected
)
484 abuf
= port_build_self_abort_msg(p_ptr
, err
);
490 /* send rejected message */
496 int port_reject_sections(struct port
*p_ptr
, struct tipc_msg
*hdr
,
497 struct iovec
const *msg_sect
, u32 num_sect
,
503 res
= msg_build(hdr
, msg_sect
, num_sect
, MAX_MSG_SIZE
,
504 !p_ptr
->user_port
, &buf
);
508 return tipc_reject_msg(buf
, err
);
511 static void port_timeout(unsigned long ref
)
513 struct port
*p_ptr
= port_lock(ref
);
514 struct sk_buff
*buf
= 0;
516 if (!p_ptr
|| !p_ptr
->publ
.connected
)
519 /* Last probe answered ? */
520 if (p_ptr
->probing_state
== PROBING
) {
521 buf
= port_build_self_abort_msg(p_ptr
, TIPC_ERR_NO_PORT
);
523 buf
= port_build_proto_msg(port_peerport(p_ptr
),
524 port_peernode(p_ptr
),
530 port_out_seqno(p_ptr
),
532 port_incr_out_seqno(p_ptr
);
533 p_ptr
->probing_state
= PROBING
;
534 k_start_timer(&p_ptr
->timer
, p_ptr
->probing_interval
);
541 static void port_handle_node_down(unsigned long ref
)
543 struct port
*p_ptr
= port_lock(ref
);
544 struct sk_buff
* buf
= 0;
548 buf
= port_build_self_abort_msg(p_ptr
, TIPC_ERR_NO_NODE
);
554 static struct sk_buff
*port_build_self_abort_msg(struct port
*p_ptr
, u32 err
)
556 u32 imp
= msg_importance(&p_ptr
->publ
.phdr
);
558 if (!p_ptr
->publ
.connected
)
560 if (imp
< TIPC_CRITICAL_IMPORTANCE
)
562 return port_build_proto_msg(p_ptr
->publ
.ref
,
564 port_peerport(p_ptr
),
565 port_peernode(p_ptr
),
569 p_ptr
->last_in_seqno
+ 1,
574 static struct sk_buff
*port_build_peer_abort_msg(struct port
*p_ptr
, u32 err
)
576 u32 imp
= msg_importance(&p_ptr
->publ
.phdr
);
578 if (!p_ptr
->publ
.connected
)
580 if (imp
< TIPC_CRITICAL_IMPORTANCE
)
582 return port_build_proto_msg(port_peerport(p_ptr
),
583 port_peernode(p_ptr
),
589 port_out_seqno(p_ptr
),
593 void port_recv_proto_msg(struct sk_buff
*buf
)
595 struct tipc_msg
*msg
= buf_msg(buf
);
596 struct port
*p_ptr
= port_lock(msg_destport(msg
));
598 struct sk_buff
*r_buf
= 0;
599 struct sk_buff
*abort_buf
= 0;
601 msg_dbg(msg
, "PORT<RECV<:");
604 err
= TIPC_ERR_NO_PORT
;
605 } else if (p_ptr
->publ
.connected
) {
606 if (port_peernode(p_ptr
) != msg_orignode(msg
))
607 err
= TIPC_ERR_NO_PORT
;
608 if (port_peerport(p_ptr
) != msg_origport(msg
))
609 err
= TIPC_ERR_NO_PORT
;
610 if (!err
&& msg_routed(msg
)) {
611 u32 seqno
= msg_transp_seqno(msg
);
612 u32 myno
= ++p_ptr
->last_in_seqno
;
614 err
= TIPC_ERR_NO_PORT
;
615 abort_buf
= port_build_self_abort_msg(p_ptr
, err
);
618 if (msg_type(msg
) == CONN_ACK
) {
619 int wakeup
= port_congested(p_ptr
) &&
620 p_ptr
->publ
.congested
&&
622 p_ptr
->acked
+= msg_msgcnt(msg
);
623 if (port_congested(p_ptr
))
625 p_ptr
->publ
.congested
= 0;
628 p_ptr
->wakeup(&p_ptr
->publ
);
631 } else if (p_ptr
->publ
.published
) {
632 err
= TIPC_ERR_NO_PORT
;
635 r_buf
= port_build_proto_msg(msg_origport(msg
),
648 if (msg_type(msg
) == CONN_PROBE
) {
649 r_buf
= port_build_proto_msg(msg_origport(msg
),
656 port_out_seqno(p_ptr
),
659 p_ptr
->probing_state
= CONFIRMED
;
660 port_incr_out_seqno(p_ptr
);
664 net_route_msg(r_buf
);
665 net_route_msg(abort_buf
);
669 static void port_print(struct port
*p_ptr
, struct print_buf
*buf
, int full_id
)
671 struct publication
*publ
;
674 tipc_printf(buf
, "<%u.%u.%u:%u>:",
675 tipc_zone(tipc_own_addr
), tipc_cluster(tipc_own_addr
),
676 tipc_node(tipc_own_addr
), p_ptr
->publ
.ref
);
678 tipc_printf(buf
, "%-10u:", p_ptr
->publ
.ref
);
680 if (p_ptr
->publ
.connected
) {
681 u32 dport
= port_peerport(p_ptr
);
682 u32 destnode
= port_peernode(p_ptr
);
684 tipc_printf(buf
, " connected to <%u.%u.%u:%u>",
685 tipc_zone(destnode
), tipc_cluster(destnode
),
686 tipc_node(destnode
), dport
);
687 if (p_ptr
->publ
.conn_type
!= 0)
688 tipc_printf(buf
, " via {%u,%u}",
689 p_ptr
->publ
.conn_type
,
690 p_ptr
->publ
.conn_instance
);
692 else if (p_ptr
->publ
.published
) {
693 tipc_printf(buf
, " bound to");
694 list_for_each_entry(publ
, &p_ptr
->publications
, pport_list
) {
695 if (publ
->lower
== publ
->upper
)
696 tipc_printf(buf
, " {%u,%u}", publ
->type
,
699 tipc_printf(buf
, " {%u,%u,%u}", publ
->type
,
700 publ
->lower
, publ
->upper
);
703 tipc_printf(buf
, "\n");
706 #define MAX_PORT_QUERY 32768
708 struct sk_buff
*port_get_ports(void)
711 struct tlv_desc
*rep_tlv
;
716 buf
= cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY
));
719 rep_tlv
= (struct tlv_desc
*)buf
->data
;
721 printbuf_init(&pb
, TLV_DATA(rep_tlv
), MAX_PORT_QUERY
);
722 spin_lock_bh(&port_list_lock
);
723 list_for_each_entry(p_ptr
, &ports
, port_list
) {
724 spin_lock_bh(p_ptr
->publ
.lock
);
725 port_print(p_ptr
, &pb
, 0);
726 spin_unlock_bh(p_ptr
->publ
.lock
);
728 spin_unlock_bh(&port_list_lock
);
729 str_len
= printbuf_validate(&pb
);
731 skb_put(buf
, TLV_SPACE(str_len
));
732 TLV_SET(rep_tlv
, TIPC_TLV_ULTRA_STRING
, NULL
, str_len
);
739 #define MAX_PORT_STATS 2000
741 struct sk_buff
*port_show_stats(const void *req_tlv_area
, int req_tlv_space
)
746 struct tlv_desc
*rep_tlv
;
750 if (!TLV_CHECK(req_tlv_area
, req_tlv_space
, TIPC_TLV_PORT_REF
))
751 return cfg_reply_error_string(TIPC_CFG_TLV_ERROR
);
753 ref
= *(u32
*)TLV_DATA(req_tlv_area
);
756 p_ptr
= port_lock(ref
);
758 return cfg_reply_error_string("port not found");
760 buf
= cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS
));
765 rep_tlv
= (struct tlv_desc
*)buf
->data
;
767 printbuf_init(&pb
, TLV_DATA(rep_tlv
), MAX_PORT_STATS
);
768 port_print(p_ptr
, &pb
, 1);
769 /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */
771 str_len
= printbuf_validate(&pb
);
773 skb_put(buf
, TLV_SPACE(str_len
));
774 TLV_SET(rep_tlv
, TIPC_TLV_ULTRA_STRING
, NULL
, str_len
);
781 void port_reinit(void)
784 struct tipc_msg
*msg
;
786 spin_lock_bh(&port_list_lock
);
787 list_for_each_entry(p_ptr
, &ports
, port_list
) {
788 msg
= &p_ptr
->publ
.phdr
;
789 if (msg_orignode(msg
) == tipc_own_addr
)
791 msg_set_orignode(msg
, tipc_own_addr
);
793 spin_unlock_bh(&port_list_lock
);
798 * port_dispatcher_sigh(): Signal handler for messages destinated
799 * to the tipc_port interface.
802 static void port_dispatcher_sigh(void *dummy
)
806 spin_lock_bh(&queue_lock
);
807 buf
= msg_queue_head
;
809 spin_unlock_bh(&queue_lock
);
813 struct user_port
*up_ptr
;
814 struct tipc_portid orig
;
815 struct tipc_name_seq dseq
;
820 struct sk_buff
*next
= buf
->next
;
821 struct tipc_msg
*msg
= buf_msg(buf
);
822 u32 dref
= msg_destport(msg
);
824 p_ptr
= port_lock(dref
);
826 /* Port deleted while msg in queue */
827 tipc_reject_msg(buf
, TIPC_ERR_NO_PORT
);
831 orig
.ref
= msg_origport(msg
);
832 orig
.node
= msg_orignode(msg
);
833 up_ptr
= p_ptr
->user_port
;
834 usr_handle
= up_ptr
->usr_handle
;
835 connected
= p_ptr
->publ
.connected
;
836 published
= p_ptr
->publ
.published
;
838 if (unlikely(msg_errcode(msg
)))
841 switch (msg_type(msg
)) {
844 tipc_conn_msg_event cb
= up_ptr
->conn_msg_cb
;
845 u32 peer_port
= port_peerport(p_ptr
);
846 u32 peer_node
= port_peernode(p_ptr
);
848 spin_unlock_bh(p_ptr
->publ
.lock
);
849 if (unlikely(!connected
)) {
850 if (unlikely(published
))
852 tipc_connect2port(dref
,&orig
);
854 if (unlikely(msg_origport(msg
) != peer_port
))
856 if (unlikely(msg_orignode(msg
) != peer_node
))
860 if (unlikely(++p_ptr
->publ
.conn_unacked
>=
861 TIPC_FLOW_CONTROL_WIN
))
862 tipc_acknowledge(dref
,
863 p_ptr
->publ
.conn_unacked
);
864 skb_pull(buf
, msg_hdr_sz(msg
));
865 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
869 case TIPC_DIRECT_MSG
:{
870 tipc_msg_event cb
= up_ptr
->msg_cb
;
872 spin_unlock_bh(p_ptr
->publ
.lock
);
873 if (unlikely(connected
))
877 skb_pull(buf
, msg_hdr_sz(msg
));
878 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
879 msg_data_sz(msg
), msg_importance(msg
),
883 case TIPC_NAMED_MSG
:{
884 tipc_named_msg_event cb
= up_ptr
->named_msg_cb
;
886 spin_unlock_bh(p_ptr
->publ
.lock
);
887 if (unlikely(connected
))
891 if (unlikely(!published
))
893 dseq
.type
= msg_nametype(msg
);
894 dseq
.lower
= msg_nameinst(msg
);
895 dseq
.upper
= dseq
.lower
;
896 skb_pull(buf
, msg_hdr_sz(msg
));
897 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
898 msg_data_sz(msg
), msg_importance(msg
),
908 switch (msg_type(msg
)) {
911 tipc_conn_shutdown_event cb
=
913 u32 peer_port
= port_peerport(p_ptr
);
914 u32 peer_node
= port_peernode(p_ptr
);
916 spin_unlock_bh(p_ptr
->publ
.lock
);
917 if (!connected
|| !cb
)
919 if (msg_origport(msg
) != peer_port
)
921 if (msg_orignode(msg
) != peer_node
)
923 tipc_disconnect(dref
);
924 skb_pull(buf
, msg_hdr_sz(msg
));
925 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
926 msg_data_sz(msg
), msg_errcode(msg
));
929 case TIPC_DIRECT_MSG
:{
930 tipc_msg_err_event cb
= up_ptr
->err_cb
;
932 spin_unlock_bh(p_ptr
->publ
.lock
);
933 if (connected
|| !cb
)
935 skb_pull(buf
, msg_hdr_sz(msg
));
936 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
937 msg_data_sz(msg
), msg_errcode(msg
), &orig
);
940 case TIPC_NAMED_MSG
:{
941 tipc_named_msg_err_event cb
=
942 up_ptr
->named_err_cb
;
944 spin_unlock_bh(p_ptr
->publ
.lock
);
945 if (connected
|| !cb
)
947 dseq
.type
= msg_nametype(msg
);
948 dseq
.lower
= msg_nameinst(msg
);
949 dseq
.upper
= dseq
.lower
;
950 skb_pull(buf
, msg_hdr_sz(msg
));
951 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
952 msg_data_sz(msg
), msg_errcode(msg
), &dseq
);
961 tipc_reject_msg(buf
, TIPC_ERR_NO_PORT
);
967 * port_dispatcher(): Dispatcher for messages destinated
968 * to the tipc_port interface. Called with port locked.
971 static u32
port_dispatcher(struct tipc_port
*dummy
, struct sk_buff
*buf
)
974 spin_lock_bh(&queue_lock
);
975 if (msg_queue_head
) {
976 msg_queue_tail
->next
= buf
;
977 msg_queue_tail
= buf
;
979 msg_queue_tail
= msg_queue_head
= buf
;
980 k_signal((Handler
)port_dispatcher_sigh
, 0);
982 spin_unlock_bh(&queue_lock
);
987 * Wake up port after congestion: Called with port locked,
991 static void port_wakeup_sh(unsigned long ref
)
994 struct user_port
*up_ptr
;
995 tipc_continue_event cb
= 0;
998 p_ptr
= port_lock(ref
);
1000 up_ptr
= p_ptr
->user_port
;
1002 cb
= up_ptr
->continue_event_cb
;
1003 uh
= up_ptr
->usr_handle
;
1012 static void port_wakeup(struct tipc_port
*p_ptr
)
1014 k_signal((Handler
)port_wakeup_sh
, p_ptr
->ref
);
1017 void tipc_acknowledge(u32 ref
, u32 ack
)
1020 struct sk_buff
*buf
= 0;
1022 p_ptr
= port_lock(ref
);
1025 if (p_ptr
->publ
.connected
) {
1026 p_ptr
->publ
.conn_unacked
-= ack
;
1027 buf
= port_build_proto_msg(port_peerport(p_ptr
),
1028 port_peernode(p_ptr
),
1034 port_out_seqno(p_ptr
),
1042 * tipc_createport(): user level call. Will add port to
1043 * registry if non-zero user_ref.
1046 int tipc_createport(u32 user_ref
,
1048 unsigned int importance
,
1049 tipc_msg_err_event error_cb
,
1050 tipc_named_msg_err_event named_error_cb
,
1051 tipc_conn_shutdown_event conn_error_cb
,
1052 tipc_msg_event msg_cb
,
1053 tipc_named_msg_event named_msg_cb
,
1054 tipc_conn_msg_event conn_msg_cb
,
1055 tipc_continue_event continue_event_cb
,/* May be zero */
1058 struct user_port
*up_ptr
;
1062 up_ptr
= (struct user_port
*)kmalloc(sizeof(*up_ptr
), GFP_ATOMIC
);
1063 if (up_ptr
== NULL
) {
1066 ref
= tipc_createport_raw(0, port_dispatcher
, port_wakeup
, importance
);
1067 p_ptr
= port_lock(ref
);
1073 p_ptr
->user_port
= up_ptr
;
1074 up_ptr
->user_ref
= user_ref
;
1075 up_ptr
->usr_handle
= usr_handle
;
1076 up_ptr
->ref
= p_ptr
->publ
.ref
;
1077 up_ptr
->err_cb
= error_cb
;
1078 up_ptr
->named_err_cb
= named_error_cb
;
1079 up_ptr
->conn_err_cb
= conn_error_cb
;
1080 up_ptr
->msg_cb
= msg_cb
;
1081 up_ptr
->named_msg_cb
= named_msg_cb
;
1082 up_ptr
->conn_msg_cb
= conn_msg_cb
;
1083 up_ptr
->continue_event_cb
= continue_event_cb
;
1084 INIT_LIST_HEAD(&up_ptr
->uport_list
);
1085 reg_add_port(up_ptr
);
1086 *portref
= p_ptr
->publ
.ref
;
1087 dbg(" tipc_createport: %x with ref %u\n", p_ptr
, p_ptr
->publ
.ref
);
1092 int tipc_ownidentity(u32 ref
, struct tipc_portid
*id
)
1095 id
->node
= tipc_own_addr
;
1099 int tipc_portimportance(u32 ref
, unsigned int *importance
)
1103 p_ptr
= port_lock(ref
);
1106 *importance
= (unsigned int)msg_importance(&p_ptr
->publ
.phdr
);
1107 spin_unlock_bh(p_ptr
->publ
.lock
);
1111 int tipc_set_portimportance(u32 ref
, unsigned int imp
)
1115 if (imp
> TIPC_CRITICAL_IMPORTANCE
)
1118 p_ptr
= port_lock(ref
);
1121 msg_set_importance(&p_ptr
->publ
.phdr
, (u32
)imp
);
1122 spin_unlock_bh(p_ptr
->publ
.lock
);
1127 int tipc_publish(u32 ref
, unsigned int scope
, struct tipc_name_seq
const *seq
)
1130 struct publication
*publ
;
1134 p_ptr
= port_lock(ref
);
1135 dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, "
1136 "lower = %u, upper = %u\n",
1137 ref
, p_ptr
, p_ptr
->publ
.connected
, scope
, seq
->lower
, seq
->upper
);
1140 if (p_ptr
->publ
.connected
)
1142 if (seq
->lower
> seq
->upper
)
1144 if ((scope
< TIPC_ZONE_SCOPE
) || (scope
> TIPC_NODE_SCOPE
))
1146 key
= ref
+ p_ptr
->pub_count
+ 1;
1151 publ
= nametbl_publish(seq
->type
, seq
->lower
, seq
->upper
,
1152 scope
, p_ptr
->publ
.ref
, key
);
1154 list_add(&publ
->pport_list
, &p_ptr
->publications
);
1156 p_ptr
->publ
.published
= 1;
1164 int tipc_withdraw(u32 ref
, unsigned int scope
, struct tipc_name_seq
const *seq
)
1167 struct publication
*publ
;
1168 struct publication
*tpubl
;
1171 p_ptr
= port_lock(ref
);
1174 if (!p_ptr
->publ
.published
)
1177 list_for_each_entry_safe(publ
, tpubl
,
1178 &p_ptr
->publications
, pport_list
) {
1179 nametbl_withdraw(publ
->type
, publ
->lower
,
1180 publ
->ref
, publ
->key
);
1184 list_for_each_entry_safe(publ
, tpubl
,
1185 &p_ptr
->publications
, pport_list
) {
1186 if (publ
->scope
!= scope
)
1188 if (publ
->type
!= seq
->type
)
1190 if (publ
->lower
!= seq
->lower
)
1192 if (publ
->upper
!= seq
->upper
)
1194 nametbl_withdraw(publ
->type
, publ
->lower
,
1195 publ
->ref
, publ
->key
);
1200 if (list_empty(&p_ptr
->publications
))
1201 p_ptr
->publ
.published
= 0;
1207 int tipc_connect2port(u32 ref
, struct tipc_portid
const *peer
)
1210 struct tipc_msg
*msg
;
1213 p_ptr
= port_lock(ref
);
1216 if (p_ptr
->publ
.published
|| p_ptr
->publ
.connected
)
1221 msg
= &p_ptr
->publ
.phdr
;
1222 msg_set_destnode(msg
, peer
->node
);
1223 msg_set_destport(msg
, peer
->ref
);
1224 msg_set_orignode(msg
, tipc_own_addr
);
1225 msg_set_origport(msg
, p_ptr
->publ
.ref
);
1226 msg_set_transp_seqno(msg
, 42);
1227 msg_set_type(msg
, TIPC_CONN_MSG
);
1228 if (!may_route(peer
->node
))
1229 msg_set_hdr_sz(msg
, SHORT_H_SIZE
);
1231 msg_set_hdr_sz(msg
, LONG_H_SIZE
);
1233 p_ptr
->probing_interval
= PROBING_INTERVAL
;
1234 p_ptr
->probing_state
= CONFIRMED
;
1235 p_ptr
->publ
.connected
= 1;
1236 k_start_timer(&p_ptr
->timer
, p_ptr
->probing_interval
);
1238 nodesub_subscribe(&p_ptr
->subscription
,peer
->node
, (void *)ref
,
1239 (net_ev_handler
)port_handle_node_down
);
1243 p_ptr
->max_pkt
= link_get_max_pkt(peer
->node
, ref
);
1248 * tipc_disconnect(): Disconnect port form peer.
1249 * This is a node local operation.
1252 int tipc_disconnect(u32 ref
)
1255 int res
= -ENOTCONN
;
1257 p_ptr
= port_lock(ref
);
1260 if (p_ptr
->publ
.connected
) {
1261 p_ptr
->publ
.connected
= 0;
1262 /* let timer expire on it's own to avoid deadlock! */
1263 nodesub_unsubscribe(&p_ptr
->subscription
);
1271 * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect
1273 int tipc_shutdown(u32 ref
)
1276 struct sk_buff
*buf
= 0;
1278 p_ptr
= port_lock(ref
);
1282 if (p_ptr
->publ
.connected
) {
1283 u32 imp
= msg_importance(&p_ptr
->publ
.phdr
);
1284 if (imp
< TIPC_CRITICAL_IMPORTANCE
)
1286 buf
= port_build_proto_msg(port_peerport(p_ptr
),
1287 port_peernode(p_ptr
),
1293 port_out_seqno(p_ptr
),
1298 return tipc_disconnect(ref
);
1301 int tipc_isconnected(u32 ref
, int *isconnected
)
1305 p_ptr
= port_lock(ref
);
1308 *isconnected
= p_ptr
->publ
.connected
;
1313 int tipc_peer(u32 ref
, struct tipc_portid
*peer
)
1318 p_ptr
= port_lock(ref
);
1321 if (p_ptr
->publ
.connected
) {
1322 peer
->ref
= port_peerport(p_ptr
);
1323 peer
->node
= port_peernode(p_ptr
);
1331 int tipc_ref_valid(u32 ref
)
1333 /* Works irrespective of type */
1334 return !!ref_deref(ref
);
1339 * port_recv_sections(): Concatenate and deliver sectioned
1340 * message for this node.
1343 int port_recv_sections(struct port
*sender
, unsigned int num_sect
,
1344 struct iovec
const *msg_sect
)
1346 struct sk_buff
*buf
;
1349 res
= msg_build(&sender
->publ
.phdr
, msg_sect
, num_sect
,
1350 MAX_MSG_SIZE
, !sender
->user_port
, &buf
);
1357 * tipc_send - send message sections on connection
1360 int tipc_send(u32 ref
, unsigned int num_sect
, struct iovec
const *msg_sect
)
1366 p_ptr
= port_deref(ref
);
1367 if (!p_ptr
|| !p_ptr
->publ
.connected
)
1370 p_ptr
->publ
.congested
= 1;
1371 if (!port_congested(p_ptr
)) {
1372 destnode
= port_peernode(p_ptr
);
1373 if (likely(destnode
!= tipc_own_addr
))
1374 res
= link_send_sections_fast(p_ptr
, msg_sect
, num_sect
,
1377 res
= port_recv_sections(p_ptr
, num_sect
, msg_sect
);
1379 if (likely(res
!= -ELINKCONG
)) {
1380 port_incr_out_seqno(p_ptr
);
1381 p_ptr
->publ
.congested
= 0;
1386 if (port_unreliable(p_ptr
)) {
1387 p_ptr
->publ
.congested
= 0;
1388 /* Just calculate msg length and return */
1389 return msg_calc_data_size(msg_sect
, num_sect
);
1395 * tipc_send_buf - send message buffer on connection
1398 int tipc_send_buf(u32 ref
, struct sk_buff
*buf
, unsigned int dsz
)
1401 struct tipc_msg
*msg
;
1407 p_ptr
= port_deref(ref
);
1408 if (!p_ptr
|| !p_ptr
->publ
.connected
)
1411 msg
= &p_ptr
->publ
.phdr
;
1412 hsz
= msg_hdr_sz(msg
);
1414 msg_set_size(msg
, sz
);
1415 if (skb_cow(buf
, hsz
))
1419 memcpy(buf
->data
, (unchar
*)msg
, hsz
);
1420 destnode
= msg_destnode(msg
);
1421 p_ptr
->publ
.congested
= 1;
1422 if (!port_congested(p_ptr
)) {
1423 if (likely(destnode
!= tipc_own_addr
))
1424 res
= tipc_send_buf_fast(buf
, destnode
);
1429 if (likely(res
!= -ELINKCONG
)) {
1430 port_incr_out_seqno(p_ptr
);
1432 p_ptr
->publ
.congested
= 0;
1436 if (port_unreliable(p_ptr
)) {
1437 p_ptr
->publ
.congested
= 0;
1444 * tipc_forward2name - forward message sections to port name
1447 int tipc_forward2name(u32 ref
,
1448 struct tipc_name
const *name
,
1451 struct iovec
const *msg_sect
,
1452 struct tipc_portid
const *orig
,
1453 unsigned int importance
)
1456 struct tipc_msg
*msg
;
1457 u32 destnode
= domain
;
1461 p_ptr
= port_deref(ref
);
1462 if (!p_ptr
|| p_ptr
->publ
.connected
)
1465 msg
= &p_ptr
->publ
.phdr
;
1466 msg_set_type(msg
, TIPC_NAMED_MSG
);
1467 msg_set_orignode(msg
, orig
->node
);
1468 msg_set_origport(msg
, orig
->ref
);
1469 msg_set_hdr_sz(msg
, LONG_H_SIZE
);
1470 msg_set_nametype(msg
, name
->type
);
1471 msg_set_nameinst(msg
, name
->instance
);
1472 msg_set_lookup_scope(msg
, addr_scope(domain
));
1473 if (importance
<= TIPC_CRITICAL_IMPORTANCE
)
1474 msg_set_importance(msg
,importance
);
1475 destport
= nametbl_translate(name
->type
, name
->instance
, &destnode
);
1476 msg_set_destnode(msg
, destnode
);
1477 msg_set_destport(msg
, destport
);
1479 if (likely(destport
|| destnode
)) {
1481 if (likely(destnode
== tipc_own_addr
))
1482 return port_recv_sections(p_ptr
, num_sect
, msg_sect
);
1483 res
= link_send_sections_fast(p_ptr
, msg_sect
, num_sect
,
1485 if (likely(res
!= -ELINKCONG
))
1487 if (port_unreliable(p_ptr
)) {
1488 /* Just calculate msg length and return */
1489 return msg_calc_data_size(msg_sect
, num_sect
);
1493 return port_reject_sections(p_ptr
, msg
, msg_sect
, num_sect
,
1498 * tipc_send2name - send message sections to port name
1501 int tipc_send2name(u32 ref
,
1502 struct tipc_name
const *name
,
1503 unsigned int domain
,
1504 unsigned int num_sect
,
1505 struct iovec
const *msg_sect
)
1507 struct tipc_portid orig
;
1510 orig
.node
= tipc_own_addr
;
1511 return tipc_forward2name(ref
, name
, domain
, num_sect
, msg_sect
, &orig
,
1512 TIPC_PORT_IMPORTANCE
);
1516 * tipc_forward_buf2name - forward message buffer to port name
1519 int tipc_forward_buf2name(u32 ref
,
1520 struct tipc_name
const *name
,
1522 struct sk_buff
*buf
,
1524 struct tipc_portid
const *orig
,
1525 unsigned int importance
)
1528 struct tipc_msg
*msg
;
1529 u32 destnode
= domain
;
1533 p_ptr
= (struct port
*)ref_deref(ref
);
1534 if (!p_ptr
|| p_ptr
->publ
.connected
)
1537 msg
= &p_ptr
->publ
.phdr
;
1538 if (importance
<= TIPC_CRITICAL_IMPORTANCE
)
1539 msg_set_importance(msg
, importance
);
1540 msg_set_type(msg
, TIPC_NAMED_MSG
);
1541 msg_set_orignode(msg
, orig
->node
);
1542 msg_set_origport(msg
, orig
->ref
);
1543 msg_set_nametype(msg
, name
->type
);
1544 msg_set_nameinst(msg
, name
->instance
);
1545 msg_set_lookup_scope(msg
, addr_scope(domain
));
1546 msg_set_hdr_sz(msg
, LONG_H_SIZE
);
1547 msg_set_size(msg
, LONG_H_SIZE
+ dsz
);
1548 destport
= nametbl_translate(name
->type
, name
->instance
, &destnode
);
1549 msg_set_destnode(msg
, destnode
);
1550 msg_set_destport(msg
, destport
);
1551 msg_dbg(msg
, "forw2name ==> ");
1552 if (skb_cow(buf
, LONG_H_SIZE
))
1554 skb_push(buf
, LONG_H_SIZE
);
1555 memcpy(buf
->data
, (unchar
*)msg
, LONG_H_SIZE
);
1556 msg_dbg(buf_msg(buf
),"PREP:");
1557 if (likely(destport
|| destnode
)) {
1559 if (destnode
== tipc_own_addr
)
1560 return port_recv_msg(buf
);
1561 res
= tipc_send_buf_fast(buf
, destnode
);
1562 if (likely(res
!= -ELINKCONG
))
1564 if (port_unreliable(p_ptr
))
1568 return tipc_reject_msg(buf
, TIPC_ERR_NO_NAME
);
1572 * tipc_send_buf2name - send message buffer to port name
1575 int tipc_send_buf2name(u32 ref
,
1576 struct tipc_name
const *dest
,
1578 struct sk_buff
*buf
,
1581 struct tipc_portid orig
;
1584 orig
.node
= tipc_own_addr
;
1585 return tipc_forward_buf2name(ref
, dest
, domain
, buf
, dsz
, &orig
,
1586 TIPC_PORT_IMPORTANCE
);
1590 * tipc_forward2port - forward message sections to port identity
1593 int tipc_forward2port(u32 ref
,
1594 struct tipc_portid
const *dest
,
1595 unsigned int num_sect
,
1596 struct iovec
const *msg_sect
,
1597 struct tipc_portid
const *orig
,
1598 unsigned int importance
)
1601 struct tipc_msg
*msg
;
1604 p_ptr
= port_deref(ref
);
1605 if (!p_ptr
|| p_ptr
->publ
.connected
)
1608 msg
= &p_ptr
->publ
.phdr
;
1609 msg_set_type(msg
, TIPC_DIRECT_MSG
);
1610 msg_set_orignode(msg
, orig
->node
);
1611 msg_set_origport(msg
, orig
->ref
);
1612 msg_set_destnode(msg
, dest
->node
);
1613 msg_set_destport(msg
, dest
->ref
);
1614 msg_set_hdr_sz(msg
, DIR_MSG_H_SIZE
);
1615 if (importance
<= TIPC_CRITICAL_IMPORTANCE
)
1616 msg_set_importance(msg
, importance
);
1618 if (dest
->node
== tipc_own_addr
)
1619 return port_recv_sections(p_ptr
, num_sect
, msg_sect
);
1620 res
= link_send_sections_fast(p_ptr
, msg_sect
, num_sect
, dest
->node
);
1621 if (likely(res
!= -ELINKCONG
))
1623 if (port_unreliable(p_ptr
)) {
1624 /* Just calculate msg length and return */
1625 return msg_calc_data_size(msg_sect
, num_sect
);
1631 * tipc_send2port - send message sections to port identity
1634 int tipc_send2port(u32 ref
,
1635 struct tipc_portid
const *dest
,
1636 unsigned int num_sect
,
1637 struct iovec
const *msg_sect
)
1639 struct tipc_portid orig
;
1642 orig
.node
= tipc_own_addr
;
1643 return tipc_forward2port(ref
, dest
, num_sect
, msg_sect
, &orig
,
1644 TIPC_PORT_IMPORTANCE
);
1648 * tipc_forward_buf2port - forward message buffer to port identity
1650 int tipc_forward_buf2port(u32 ref
,
1651 struct tipc_portid
const *dest
,
1652 struct sk_buff
*buf
,
1654 struct tipc_portid
const *orig
,
1655 unsigned int importance
)
1658 struct tipc_msg
*msg
;
1661 p_ptr
= (struct port
*)ref_deref(ref
);
1662 if (!p_ptr
|| p_ptr
->publ
.connected
)
1665 msg
= &p_ptr
->publ
.phdr
;
1666 msg_set_type(msg
, TIPC_DIRECT_MSG
);
1667 msg_set_orignode(msg
, orig
->node
);
1668 msg_set_origport(msg
, orig
->ref
);
1669 msg_set_destnode(msg
, dest
->node
);
1670 msg_set_destport(msg
, dest
->ref
);
1671 msg_set_hdr_sz(msg
, DIR_MSG_H_SIZE
);
1672 if (importance
<= TIPC_CRITICAL_IMPORTANCE
)
1673 msg_set_importance(msg
, importance
);
1674 msg_set_size(msg
, DIR_MSG_H_SIZE
+ dsz
);
1675 if (skb_cow(buf
, DIR_MSG_H_SIZE
))
1678 skb_push(buf
, DIR_MSG_H_SIZE
);
1679 memcpy(buf
->data
, (unchar
*)msg
, DIR_MSG_H_SIZE
);
1680 msg_dbg(msg
, "buf2port: ");
1682 if (dest
->node
== tipc_own_addr
)
1683 return port_recv_msg(buf
);
1684 res
= tipc_send_buf_fast(buf
, dest
->node
);
1685 if (likely(res
!= -ELINKCONG
))
1687 if (port_unreliable(p_ptr
))
1693 * tipc_send_buf2port - send message buffer to port identity
1696 int tipc_send_buf2port(u32 ref
,
1697 struct tipc_portid
const *dest
,
1698 struct sk_buff
*buf
,
1701 struct tipc_portid orig
;
1704 orig
.node
= tipc_own_addr
;
1705 return tipc_forward_buf2port(ref
, dest
, buf
, dsz
, &orig
,
1706 TIPC_PORT_IMPORTANCE
);