2 * net/tipc/port.c: TIPC port code
4 * Copyright (c) 1992-2006, Ericsson AB
5 * Copyright (c) 2004-2005, Wind River Systems
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the names of the copyright holders nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
45 #include "name_table.h"
50 /* Connection management: */
51 #define PROBING_INTERVAL 3600000 /* [ms] => 1 h */
55 #define MAX_REJECT_SIZE 1024
57 static struct sk_buff
*msg_queue_head
= NULL
;
58 static struct sk_buff
*msg_queue_tail
= NULL
;
60 spinlock_t tipc_port_list_lock
= SPIN_LOCK_UNLOCKED
;
61 static spinlock_t queue_lock
= SPIN_LOCK_UNLOCKED
;
63 static LIST_HEAD(ports
);
64 static void port_handle_node_down(unsigned long ref
);
65 static struct sk_buff
* port_build_self_abort_msg(struct port
*,u32 err
);
66 static struct sk_buff
* port_build_peer_abort_msg(struct port
*,u32 err
);
67 static void port_timeout(unsigned long ref
);
70 static u32
port_peernode(struct port
*p_ptr
)
72 return msg_destnode(&p_ptr
->publ
.phdr
);
75 static u32
port_peerport(struct port
*p_ptr
)
77 return msg_destport(&p_ptr
->publ
.phdr
);
80 static u32
port_out_seqno(struct port
*p_ptr
)
82 return msg_transp_seqno(&p_ptr
->publ
.phdr
);
85 static void port_incr_out_seqno(struct port
*p_ptr
)
87 struct tipc_msg
*m
= &p_ptr
->publ
.phdr
;
89 if (likely(!msg_routed(m
)))
91 msg_set_transp_seqno(m
, (msg_transp_seqno(m
) + 1));
95 * tipc_multicast - send a multicast message to local and remote destinations
98 int tipc_multicast(u32 ref
, struct tipc_name_seq
const *seq
, u32 domain
,
99 u32 num_sect
, struct iovec
const *msg_sect
)
101 struct tipc_msg
*hdr
;
103 struct sk_buff
*ibuf
= NULL
;
104 struct port_list dports
= {0, NULL
, };
105 struct port
*oport
= tipc_port_deref(ref
);
109 if (unlikely(!oport
))
112 /* Create multicast message */
114 hdr
= &oport
->publ
.phdr
;
115 msg_set_type(hdr
, TIPC_MCAST_MSG
);
116 msg_set_nametype(hdr
, seq
->type
);
117 msg_set_namelower(hdr
, seq
->lower
);
118 msg_set_nameupper(hdr
, seq
->upper
);
119 msg_set_hdr_sz(hdr
, MCAST_H_SIZE
);
120 res
= msg_build(hdr
, msg_sect
, num_sect
, MAX_MSG_SIZE
,
121 !oport
->user_port
, &buf
);
125 /* Figure out where to send multicast message */
127 ext_targets
= tipc_nametbl_mc_translate(seq
->type
, seq
->lower
, seq
->upper
,
128 TIPC_NODE_SCOPE
, &dports
);
130 /* Send message to destinations (duplicate it only if necessary) */
133 if (dports
.count
!= 0) {
134 ibuf
= skb_copy(buf
, GFP_ATOMIC
);
136 tipc_port_list_free(&dports
);
141 res
= tipc_bclink_send_msg(buf
);
142 if ((res
< 0) && (dports
.count
!= 0)) {
151 tipc_port_recv_mcast(ibuf
, &dports
);
153 tipc_port_list_free(&dports
);
159 * tipc_port_recv_mcast - deliver multicast message to all destination ports
161 * If there is no port list, perform a lookup to create one
164 void tipc_port_recv_mcast(struct sk_buff
*buf
, struct port_list
*dp
)
166 struct tipc_msg
* msg
;
167 struct port_list dports
= {0, NULL
, };
168 struct port_list
*item
= dp
;
174 /* Create destination port list, if one wasn't supplied */
177 tipc_nametbl_mc_translate(msg_nametype(msg
),
185 /* Deliver a copy of message to each destination port */
187 if (dp
->count
!= 0) {
188 if (dp
->count
== 1) {
189 msg_set_destport(msg
, dp
->ports
[0]);
190 tipc_port_recv_msg(buf
);
191 tipc_port_list_free(dp
);
194 for (; cnt
< dp
->count
; cnt
++) {
195 int index
= cnt
% PLSIZE
;
196 struct sk_buff
*b
= skb_clone(buf
, GFP_ATOMIC
);
199 warn("Buffer allocation failure\n");
200 msg_dbg(msg
, "LOST:");
203 if ((index
== 0) && (cnt
!= 0)) {
206 msg_set_destport(buf_msg(b
),item
->ports
[index
]);
207 tipc_port_recv_msg(b
);
212 tipc_port_list_free(dp
);
216 * tipc_createport_raw - create a native TIPC port
218 * Returns local port reference
221 u32
tipc_createport_raw(void *usr_handle
,
222 u32 (*dispatcher
)(struct tipc_port
*, struct sk_buff
*),
223 void (*wakeup
)(struct tipc_port
*),
224 const u32 importance
)
227 struct tipc_msg
*msg
;
230 p_ptr
= kmalloc(sizeof(*p_ptr
), GFP_ATOMIC
);
232 warn("Memory squeeze; failed to create port\n");
235 memset(p_ptr
, 0, sizeof(*p_ptr
));
236 ref
= tipc_ref_acquire(p_ptr
, &p_ptr
->publ
.lock
);
238 warn("Reference Table Exhausted\n");
244 p_ptr
->publ
.ref
= ref
;
245 msg
= &p_ptr
->publ
.phdr
;
246 msg_init(msg
, DATA_LOW
, TIPC_NAMED_MSG
, TIPC_OK
, LONG_H_SIZE
, 0);
247 msg_set_orignode(msg
, tipc_own_addr
);
248 msg_set_prevnode(msg
, tipc_own_addr
);
249 msg_set_origport(msg
, ref
);
250 msg_set_importance(msg
,importance
);
251 p_ptr
->last_in_seqno
= 41;
253 p_ptr
->publ
.usr_handle
= usr_handle
;
254 INIT_LIST_HEAD(&p_ptr
->wait_list
);
255 INIT_LIST_HEAD(&p_ptr
->subscription
.nodesub_list
);
256 p_ptr
->congested_link
= NULL
;
257 p_ptr
->max_pkt
= MAX_PKT_DEFAULT
;
258 p_ptr
->dispatcher
= dispatcher
;
259 p_ptr
->wakeup
= wakeup
;
260 p_ptr
->user_port
= NULL
;
261 k_init_timer(&p_ptr
->timer
, (Handler
)port_timeout
, ref
);
262 spin_lock_bh(&tipc_port_list_lock
);
263 INIT_LIST_HEAD(&p_ptr
->publications
);
264 INIT_LIST_HEAD(&p_ptr
->port_list
);
265 list_add_tail(&p_ptr
->port_list
, &ports
);
266 spin_unlock_bh(&tipc_port_list_lock
);
267 tipc_port_unlock(p_ptr
);
271 int tipc_deleteport(u32 ref
)
274 struct sk_buff
*buf
= NULL
;
276 tipc_withdraw(ref
, 0, NULL
);
277 p_ptr
= tipc_port_lock(ref
);
281 tipc_ref_discard(ref
);
282 tipc_port_unlock(p_ptr
);
284 k_cancel_timer(&p_ptr
->timer
);
285 if (p_ptr
->publ
.connected
) {
286 buf
= port_build_peer_abort_msg(p_ptr
, TIPC_ERR_NO_PORT
);
287 tipc_nodesub_unsubscribe(&p_ptr
->subscription
);
289 if (p_ptr
->user_port
) {
290 tipc_reg_remove_port(p_ptr
->user_port
);
291 kfree(p_ptr
->user_port
);
294 spin_lock_bh(&tipc_port_list_lock
);
295 list_del(&p_ptr
->port_list
);
296 list_del(&p_ptr
->wait_list
);
297 spin_unlock_bh(&tipc_port_list_lock
);
298 k_term_timer(&p_ptr
->timer
);
300 dbg("Deleted port %u\n", ref
);
301 tipc_net_route_msg(buf
);
306 * tipc_get_port() - return port associated with 'ref'
308 * Note: Port is not locked.
311 struct tipc_port
*tipc_get_port(const u32 ref
)
313 return (struct tipc_port
*)tipc_ref_deref(ref
);
317 * tipc_get_handle - return user handle associated to port 'ref'
320 void *tipc_get_handle(const u32 ref
)
325 p_ptr
= tipc_port_lock(ref
);
328 handle
= p_ptr
->publ
.usr_handle
;
329 tipc_port_unlock(p_ptr
);
333 static int port_unreliable(struct port
*p_ptr
)
335 return msg_src_droppable(&p_ptr
->publ
.phdr
);
338 int tipc_portunreliable(u32 ref
, unsigned int *isunreliable
)
342 p_ptr
= tipc_port_lock(ref
);
345 *isunreliable
= port_unreliable(p_ptr
);
346 spin_unlock_bh(p_ptr
->publ
.lock
);
350 int tipc_set_portunreliable(u32 ref
, unsigned int isunreliable
)
354 p_ptr
= tipc_port_lock(ref
);
357 msg_set_src_droppable(&p_ptr
->publ
.phdr
, (isunreliable
!= 0));
358 tipc_port_unlock(p_ptr
);
362 static int port_unreturnable(struct port
*p_ptr
)
364 return msg_dest_droppable(&p_ptr
->publ
.phdr
);
367 int tipc_portunreturnable(u32 ref
, unsigned int *isunrejectable
)
371 p_ptr
= tipc_port_lock(ref
);
374 *isunrejectable
= port_unreturnable(p_ptr
);
375 spin_unlock_bh(p_ptr
->publ
.lock
);
379 int tipc_set_portunreturnable(u32 ref
, unsigned int isunrejectable
)
383 p_ptr
= tipc_port_lock(ref
);
386 msg_set_dest_droppable(&p_ptr
->publ
.phdr
, (isunrejectable
!= 0));
387 tipc_port_unlock(p_ptr
);
392 * port_build_proto_msg(): build a port level protocol
393 * or a connection abortion message. Called with
396 static struct sk_buff
*port_build_proto_msg(u32 destport
, u32 destnode
,
397 u32 origport
, u32 orignode
,
398 u32 usr
, u32 type
, u32 err
,
402 struct tipc_msg
*msg
;
404 buf
= buf_acquire(LONG_H_SIZE
);
407 msg_init(msg
, usr
, type
, err
, LONG_H_SIZE
, destnode
);
408 msg_set_destport(msg
, destport
);
409 msg_set_origport(msg
, origport
);
410 msg_set_destnode(msg
, destnode
);
411 msg_set_orignode(msg
, orignode
);
412 msg_set_transp_seqno(msg
, seqno
);
413 msg_set_msgcnt(msg
, ack
);
414 msg_dbg(msg
, "PORT>SEND>:");
419 int tipc_set_msg_option(struct tipc_port
*tp_ptr
, const char *opt
, const u32 sz
)
421 msg_expand(&tp_ptr
->phdr
, msg_destnode(&tp_ptr
->phdr
));
422 msg_set_options(&tp_ptr
->phdr
, opt
, sz
);
426 int tipc_reject_msg(struct sk_buff
*buf
, u32 err
)
428 struct tipc_msg
*msg
= buf_msg(buf
);
429 struct sk_buff
*rbuf
;
430 struct tipc_msg
*rmsg
;
432 u32 imp
= msg_importance(msg
);
433 u32 data_sz
= msg_data_sz(msg
);
435 if (data_sz
> MAX_REJECT_SIZE
)
436 data_sz
= MAX_REJECT_SIZE
;
437 if (msg_connected(msg
) && (imp
< TIPC_CRITICAL_IMPORTANCE
))
439 msg_dbg(msg
, "port->rej: ");
441 /* discard rejected message if it shouldn't be returned to sender */
442 if (msg_errcode(msg
) || msg_dest_droppable(msg
)) {
447 /* construct rejected message */
449 hdr_sz
= MCAST_H_SIZE
;
451 hdr_sz
= LONG_H_SIZE
;
452 rbuf
= buf_acquire(data_sz
+ hdr_sz
);
457 rmsg
= buf_msg(rbuf
);
458 msg_init(rmsg
, imp
, msg_type(msg
), err
, hdr_sz
, msg_orignode(msg
));
459 msg_set_destport(rmsg
, msg_origport(msg
));
460 msg_set_prevnode(rmsg
, tipc_own_addr
);
461 msg_set_origport(rmsg
, msg_destport(msg
));
463 msg_set_orignode(rmsg
, tipc_own_addr
);
465 msg_set_orignode(rmsg
, msg_destnode(msg
));
466 msg_set_size(rmsg
, data_sz
+ hdr_sz
);
467 msg_set_nametype(rmsg
, msg_nametype(msg
));
468 msg_set_nameinst(rmsg
, msg_nameinst(msg
));
469 memcpy(rbuf
->data
+ hdr_sz
, msg_data(msg
), data_sz
);
471 /* send self-abort message when rejecting on a connected port */
472 if (msg_connected(msg
)) {
473 struct sk_buff
*abuf
= NULL
;
474 struct port
*p_ptr
= tipc_port_lock(msg_destport(msg
));
477 if (p_ptr
->publ
.connected
)
478 abuf
= port_build_self_abort_msg(p_ptr
, err
);
479 tipc_port_unlock(p_ptr
);
481 tipc_net_route_msg(abuf
);
484 /* send rejected message */
486 tipc_net_route_msg(rbuf
);
490 int tipc_port_reject_sections(struct port
*p_ptr
, struct tipc_msg
*hdr
,
491 struct iovec
const *msg_sect
, u32 num_sect
,
497 res
= msg_build(hdr
, msg_sect
, num_sect
, MAX_MSG_SIZE
,
498 !p_ptr
->user_port
, &buf
);
502 return tipc_reject_msg(buf
, err
);
505 static void port_timeout(unsigned long ref
)
507 struct port
*p_ptr
= tipc_port_lock(ref
);
508 struct sk_buff
*buf
= NULL
;
510 if (!p_ptr
|| !p_ptr
->publ
.connected
)
513 /* Last probe answered ? */
514 if (p_ptr
->probing_state
== PROBING
) {
515 buf
= port_build_self_abort_msg(p_ptr
, TIPC_ERR_NO_PORT
);
517 buf
= port_build_proto_msg(port_peerport(p_ptr
),
518 port_peernode(p_ptr
),
524 port_out_seqno(p_ptr
),
526 port_incr_out_seqno(p_ptr
);
527 p_ptr
->probing_state
= PROBING
;
528 k_start_timer(&p_ptr
->timer
, p_ptr
->probing_interval
);
530 tipc_port_unlock(p_ptr
);
531 tipc_net_route_msg(buf
);
535 static void port_handle_node_down(unsigned long ref
)
537 struct port
*p_ptr
= tipc_port_lock(ref
);
538 struct sk_buff
* buf
= NULL
;
542 buf
= port_build_self_abort_msg(p_ptr
, TIPC_ERR_NO_NODE
);
543 tipc_port_unlock(p_ptr
);
544 tipc_net_route_msg(buf
);
548 static struct sk_buff
*port_build_self_abort_msg(struct port
*p_ptr
, u32 err
)
550 u32 imp
= msg_importance(&p_ptr
->publ
.phdr
);
552 if (!p_ptr
->publ
.connected
)
554 if (imp
< TIPC_CRITICAL_IMPORTANCE
)
556 return port_build_proto_msg(p_ptr
->publ
.ref
,
558 port_peerport(p_ptr
),
559 port_peernode(p_ptr
),
563 p_ptr
->last_in_seqno
+ 1,
568 static struct sk_buff
*port_build_peer_abort_msg(struct port
*p_ptr
, u32 err
)
570 u32 imp
= msg_importance(&p_ptr
->publ
.phdr
);
572 if (!p_ptr
->publ
.connected
)
574 if (imp
< TIPC_CRITICAL_IMPORTANCE
)
576 return port_build_proto_msg(port_peerport(p_ptr
),
577 port_peernode(p_ptr
),
583 port_out_seqno(p_ptr
),
587 void tipc_port_recv_proto_msg(struct sk_buff
*buf
)
589 struct tipc_msg
*msg
= buf_msg(buf
);
590 struct port
*p_ptr
= tipc_port_lock(msg_destport(msg
));
592 struct sk_buff
*r_buf
= NULL
;
593 struct sk_buff
*abort_buf
= NULL
;
595 msg_dbg(msg
, "PORT<RECV<:");
598 err
= TIPC_ERR_NO_PORT
;
599 } else if (p_ptr
->publ
.connected
) {
600 if (port_peernode(p_ptr
) != msg_orignode(msg
))
601 err
= TIPC_ERR_NO_PORT
;
602 if (port_peerport(p_ptr
) != msg_origport(msg
))
603 err
= TIPC_ERR_NO_PORT
;
604 if (!err
&& msg_routed(msg
)) {
605 u32 seqno
= msg_transp_seqno(msg
);
606 u32 myno
= ++p_ptr
->last_in_seqno
;
608 err
= TIPC_ERR_NO_PORT
;
609 abort_buf
= port_build_self_abort_msg(p_ptr
, err
);
612 if (msg_type(msg
) == CONN_ACK
) {
613 int wakeup
= tipc_port_congested(p_ptr
) &&
614 p_ptr
->publ
.congested
&&
616 p_ptr
->acked
+= msg_msgcnt(msg
);
617 if (tipc_port_congested(p_ptr
))
619 p_ptr
->publ
.congested
= 0;
622 p_ptr
->wakeup(&p_ptr
->publ
);
625 } else if (p_ptr
->publ
.published
) {
626 err
= TIPC_ERR_NO_PORT
;
629 r_buf
= port_build_proto_msg(msg_origport(msg
),
642 if (msg_type(msg
) == CONN_PROBE
) {
643 r_buf
= port_build_proto_msg(msg_origport(msg
),
650 port_out_seqno(p_ptr
),
653 p_ptr
->probing_state
= CONFIRMED
;
654 port_incr_out_seqno(p_ptr
);
657 tipc_port_unlock(p_ptr
);
658 tipc_net_route_msg(r_buf
);
659 tipc_net_route_msg(abort_buf
);
663 static void port_print(struct port
*p_ptr
, struct print_buf
*buf
, int full_id
)
665 struct publication
*publ
;
668 tipc_printf(buf
, "<%u.%u.%u:%u>:",
669 tipc_zone(tipc_own_addr
), tipc_cluster(tipc_own_addr
),
670 tipc_node(tipc_own_addr
), p_ptr
->publ
.ref
);
672 tipc_printf(buf
, "%-10u:", p_ptr
->publ
.ref
);
674 if (p_ptr
->publ
.connected
) {
675 u32 dport
= port_peerport(p_ptr
);
676 u32 destnode
= port_peernode(p_ptr
);
678 tipc_printf(buf
, " connected to <%u.%u.%u:%u>",
679 tipc_zone(destnode
), tipc_cluster(destnode
),
680 tipc_node(destnode
), dport
);
681 if (p_ptr
->publ
.conn_type
!= 0)
682 tipc_printf(buf
, " via {%u,%u}",
683 p_ptr
->publ
.conn_type
,
684 p_ptr
->publ
.conn_instance
);
686 else if (p_ptr
->publ
.published
) {
687 tipc_printf(buf
, " bound to");
688 list_for_each_entry(publ
, &p_ptr
->publications
, pport_list
) {
689 if (publ
->lower
== publ
->upper
)
690 tipc_printf(buf
, " {%u,%u}", publ
->type
,
693 tipc_printf(buf
, " {%u,%u,%u}", publ
->type
,
694 publ
->lower
, publ
->upper
);
697 tipc_printf(buf
, "\n");
700 #define MAX_PORT_QUERY 32768
702 struct sk_buff
*tipc_port_get_ports(void)
705 struct tlv_desc
*rep_tlv
;
710 buf
= tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY
));
713 rep_tlv
= (struct tlv_desc
*)buf
->data
;
715 tipc_printbuf_init(&pb
, TLV_DATA(rep_tlv
), MAX_PORT_QUERY
);
716 spin_lock_bh(&tipc_port_list_lock
);
717 list_for_each_entry(p_ptr
, &ports
, port_list
) {
718 spin_lock_bh(p_ptr
->publ
.lock
);
719 port_print(p_ptr
, &pb
, 0);
720 spin_unlock_bh(p_ptr
->publ
.lock
);
722 spin_unlock_bh(&tipc_port_list_lock
);
723 str_len
= tipc_printbuf_validate(&pb
);
725 skb_put(buf
, TLV_SPACE(str_len
));
726 TLV_SET(rep_tlv
, TIPC_TLV_ULTRA_STRING
, NULL
, str_len
);
733 #define MAX_PORT_STATS 2000
735 struct sk_buff
*port_show_stats(const void *req_tlv_area
, int req_tlv_space
)
740 struct tlv_desc
*rep_tlv
;
744 if (!TLV_CHECK(req_tlv_area
, req_tlv_space
, TIPC_TLV_PORT_REF
))
745 return cfg_reply_error_string(TIPC_CFG_TLV_ERROR
);
747 ref
= *(u32
*)TLV_DATA(req_tlv_area
);
750 p_ptr
= tipc_port_lock(ref
);
752 return cfg_reply_error_string("port not found");
754 buf
= tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS
));
756 tipc_port_unlock(p_ptr
);
759 rep_tlv
= (struct tlv_desc
*)buf
->data
;
761 tipc_printbuf_init(&pb
, TLV_DATA(rep_tlv
), MAX_PORT_STATS
);
762 port_print(p_ptr
, &pb
, 1);
763 /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */
764 tipc_port_unlock(p_ptr
);
765 str_len
= tipc_printbuf_validate(&pb
);
767 skb_put(buf
, TLV_SPACE(str_len
));
768 TLV_SET(rep_tlv
, TIPC_TLV_ULTRA_STRING
, NULL
, str_len
);
775 void tipc_port_reinit(void)
778 struct tipc_msg
*msg
;
780 spin_lock_bh(&tipc_port_list_lock
);
781 list_for_each_entry(p_ptr
, &ports
, port_list
) {
782 msg
= &p_ptr
->publ
.phdr
;
783 if (msg_orignode(msg
) == tipc_own_addr
)
785 msg_set_orignode(msg
, tipc_own_addr
);
787 spin_unlock_bh(&tipc_port_list_lock
);
792 * port_dispatcher_sigh(): Signal handler for messages destinated
793 * to the tipc_port interface.
796 static void port_dispatcher_sigh(void *dummy
)
800 spin_lock_bh(&queue_lock
);
801 buf
= msg_queue_head
;
802 msg_queue_head
= NULL
;
803 spin_unlock_bh(&queue_lock
);
807 struct user_port
*up_ptr
;
808 struct tipc_portid orig
;
809 struct tipc_name_seq dseq
;
815 struct sk_buff
*next
= buf
->next
;
816 struct tipc_msg
*msg
= buf_msg(buf
);
817 u32 dref
= msg_destport(msg
);
819 message_type
= msg_type(msg
);
820 if (message_type
> TIPC_DIRECT_MSG
)
821 goto reject
; /* Unsupported message type */
823 p_ptr
= tipc_port_lock(dref
);
825 goto reject
; /* Port deleted while msg in queue */
827 orig
.ref
= msg_origport(msg
);
828 orig
.node
= msg_orignode(msg
);
829 up_ptr
= p_ptr
->user_port
;
830 usr_handle
= up_ptr
->usr_handle
;
831 connected
= p_ptr
->publ
.connected
;
832 published
= p_ptr
->publ
.published
;
834 if (unlikely(msg_errcode(msg
)))
837 switch (message_type
) {
840 tipc_conn_msg_event cb
= up_ptr
->conn_msg_cb
;
841 u32 peer_port
= port_peerport(p_ptr
);
842 u32 peer_node
= port_peernode(p_ptr
);
844 spin_unlock_bh(p_ptr
->publ
.lock
);
845 if (unlikely(!connected
)) {
846 if (unlikely(published
))
848 tipc_connect2port(dref
,&orig
);
850 if (unlikely(msg_origport(msg
) != peer_port
))
852 if (unlikely(msg_orignode(msg
) != peer_node
))
856 if (unlikely(++p_ptr
->publ
.conn_unacked
>=
857 TIPC_FLOW_CONTROL_WIN
))
858 tipc_acknowledge(dref
,
859 p_ptr
->publ
.conn_unacked
);
860 skb_pull(buf
, msg_hdr_sz(msg
));
861 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
865 case TIPC_DIRECT_MSG
:{
866 tipc_msg_event cb
= up_ptr
->msg_cb
;
868 spin_unlock_bh(p_ptr
->publ
.lock
);
869 if (unlikely(connected
))
873 skb_pull(buf
, msg_hdr_sz(msg
));
874 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
875 msg_data_sz(msg
), msg_importance(msg
),
880 case TIPC_NAMED_MSG
:{
881 tipc_named_msg_event cb
= up_ptr
->named_msg_cb
;
883 spin_unlock_bh(p_ptr
->publ
.lock
);
884 if (unlikely(connected
))
888 if (unlikely(!published
))
890 dseq
.type
= msg_nametype(msg
);
891 dseq
.lower
= msg_nameinst(msg
);
892 dseq
.upper
= (message_type
== TIPC_NAMED_MSG
)
893 ? dseq
.lower
: msg_nameupper(msg
);
894 skb_pull(buf
, msg_hdr_sz(msg
));
895 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
896 msg_data_sz(msg
), msg_importance(msg
),
906 switch (message_type
) {
909 tipc_conn_shutdown_event cb
=
911 u32 peer_port
= port_peerport(p_ptr
);
912 u32 peer_node
= port_peernode(p_ptr
);
914 spin_unlock_bh(p_ptr
->publ
.lock
);
915 if (!connected
|| !cb
)
917 if (msg_origport(msg
) != peer_port
)
919 if (msg_orignode(msg
) != peer_node
)
921 tipc_disconnect(dref
);
922 skb_pull(buf
, msg_hdr_sz(msg
));
923 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
924 msg_data_sz(msg
), msg_errcode(msg
));
927 case TIPC_DIRECT_MSG
:{
928 tipc_msg_err_event cb
= up_ptr
->err_cb
;
930 spin_unlock_bh(p_ptr
->publ
.lock
);
931 if (connected
|| !cb
)
933 skb_pull(buf
, msg_hdr_sz(msg
));
934 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
935 msg_data_sz(msg
), msg_errcode(msg
), &orig
);
939 case TIPC_NAMED_MSG
:{
940 tipc_named_msg_err_event cb
=
941 up_ptr
->named_err_cb
;
943 spin_unlock_bh(p_ptr
->publ
.lock
);
944 if (connected
|| !cb
)
946 dseq
.type
= msg_nametype(msg
);
947 dseq
.lower
= msg_nameinst(msg
);
948 dseq
.upper
= (message_type
== TIPC_NAMED_MSG
)
949 ? dseq
.lower
: msg_nameupper(msg
);
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 tipc_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
= NULL
;
998 p_ptr
= tipc_port_lock(ref
);
1000 up_ptr
= p_ptr
->user_port
;
1002 cb
= up_ptr
->continue_event_cb
;
1003 uh
= up_ptr
->usr_handle
;
1005 tipc_port_unlock(p_ptr
);
1012 static void port_wakeup(struct tipc_port
*p_ptr
)
1014 tipc_k_signal((Handler
)port_wakeup_sh
, p_ptr
->ref
);
1017 void tipc_acknowledge(u32 ref
, u32 ack
)
1020 struct sk_buff
*buf
= NULL
;
1022 p_ptr
= tipc_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
),
1037 tipc_port_unlock(p_ptr
);
1038 tipc_net_route_msg(buf
);
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(NULL
, port_dispatcher
, port_wakeup
, importance
);
1067 p_ptr
= tipc_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 tipc_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
);
1088 tipc_port_unlock(p_ptr
);
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
= tipc_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
= tipc_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
= tipc_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
= tipc_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;
1160 tipc_port_unlock(p_ptr
);
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
= tipc_port_lock(ref
);
1175 list_for_each_entry_safe(publ
, tpubl
,
1176 &p_ptr
->publications
, pport_list
) {
1177 tipc_nametbl_withdraw(publ
->type
, publ
->lower
,
1178 publ
->ref
, publ
->key
);
1182 list_for_each_entry_safe(publ
, tpubl
,
1183 &p_ptr
->publications
, pport_list
) {
1184 if (publ
->scope
!= scope
)
1186 if (publ
->type
!= seq
->type
)
1188 if (publ
->lower
!= seq
->lower
)
1190 if (publ
->upper
!= seq
->upper
)
1192 tipc_nametbl_withdraw(publ
->type
, publ
->lower
,
1193 publ
->ref
, publ
->key
);
1198 if (list_empty(&p_ptr
->publications
))
1199 p_ptr
->publ
.published
= 0;
1200 tipc_port_unlock(p_ptr
);
1204 int tipc_connect2port(u32 ref
, struct tipc_portid
const *peer
)
1207 struct tipc_msg
*msg
;
1210 p_ptr
= tipc_port_lock(ref
);
1213 if (p_ptr
->publ
.published
|| p_ptr
->publ
.connected
)
1218 msg
= &p_ptr
->publ
.phdr
;
1219 msg_set_destnode(msg
, peer
->node
);
1220 msg_set_destport(msg
, peer
->ref
);
1221 msg_set_orignode(msg
, tipc_own_addr
);
1222 msg_set_origport(msg
, p_ptr
->publ
.ref
);
1223 msg_set_transp_seqno(msg
, 42);
1224 msg_set_type(msg
, TIPC_CONN_MSG
);
1225 if (!may_route(peer
->node
))
1226 msg_set_hdr_sz(msg
, SHORT_H_SIZE
);
1228 msg_set_hdr_sz(msg
, LONG_H_SIZE
);
1230 p_ptr
->probing_interval
= PROBING_INTERVAL
;
1231 p_ptr
->probing_state
= CONFIRMED
;
1232 p_ptr
->publ
.connected
= 1;
1233 k_start_timer(&p_ptr
->timer
, p_ptr
->probing_interval
);
1235 tipc_nodesub_subscribe(&p_ptr
->subscription
,peer
->node
,
1236 (void *)(unsigned long)ref
,
1237 (net_ev_handler
)port_handle_node_down
);
1240 tipc_port_unlock(p_ptr
);
1241 p_ptr
->max_pkt
= tipc_link_get_max_pkt(peer
->node
, ref
);
1246 * tipc_disconnect(): Disconnect port form peer.
1247 * This is a node local operation.
1250 int tipc_disconnect(u32 ref
)
1253 int res
= -ENOTCONN
;
1255 p_ptr
= tipc_port_lock(ref
);
1258 if (p_ptr
->publ
.connected
) {
1259 p_ptr
->publ
.connected
= 0;
1260 /* let timer expire on it's own to avoid deadlock! */
1261 tipc_nodesub_unsubscribe(&p_ptr
->subscription
);
1264 tipc_port_unlock(p_ptr
);
1269 * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect
1271 int tipc_shutdown(u32 ref
)
1274 struct sk_buff
*buf
= NULL
;
1276 p_ptr
= tipc_port_lock(ref
);
1280 if (p_ptr
->publ
.connected
) {
1281 u32 imp
= msg_importance(&p_ptr
->publ
.phdr
);
1282 if (imp
< TIPC_CRITICAL_IMPORTANCE
)
1284 buf
= port_build_proto_msg(port_peerport(p_ptr
),
1285 port_peernode(p_ptr
),
1291 port_out_seqno(p_ptr
),
1294 tipc_port_unlock(p_ptr
);
1295 tipc_net_route_msg(buf
);
1296 return tipc_disconnect(ref
);
1299 int tipc_isconnected(u32 ref
, int *isconnected
)
1303 p_ptr
= tipc_port_lock(ref
);
1306 *isconnected
= p_ptr
->publ
.connected
;
1307 tipc_port_unlock(p_ptr
);
1311 int tipc_peer(u32 ref
, struct tipc_portid
*peer
)
1316 p_ptr
= tipc_port_lock(ref
);
1319 if (p_ptr
->publ
.connected
) {
1320 peer
->ref
= port_peerport(p_ptr
);
1321 peer
->node
= port_peernode(p_ptr
);
1325 tipc_port_unlock(p_ptr
);
1329 int tipc_ref_valid(u32 ref
)
1331 /* Works irrespective of type */
1332 return !!tipc_ref_deref(ref
);
1337 * tipc_port_recv_sections(): Concatenate and deliver sectioned
1338 * message for this node.
1341 int tipc_port_recv_sections(struct port
*sender
, unsigned int num_sect
,
1342 struct iovec
const *msg_sect
)
1344 struct sk_buff
*buf
;
1347 res
= msg_build(&sender
->publ
.phdr
, msg_sect
, num_sect
,
1348 MAX_MSG_SIZE
, !sender
->user_port
, &buf
);
1350 tipc_port_recv_msg(buf
);
1355 * tipc_send - send message sections on connection
1358 int tipc_send(u32 ref
, unsigned int num_sect
, struct iovec
const *msg_sect
)
1364 p_ptr
= tipc_port_deref(ref
);
1365 if (!p_ptr
|| !p_ptr
->publ
.connected
)
1368 p_ptr
->publ
.congested
= 1;
1369 if (!tipc_port_congested(p_ptr
)) {
1370 destnode
= port_peernode(p_ptr
);
1371 if (likely(destnode
!= tipc_own_addr
))
1372 res
= tipc_link_send_sections_fast(p_ptr
, msg_sect
, num_sect
,
1375 res
= tipc_port_recv_sections(p_ptr
, num_sect
, msg_sect
);
1377 if (likely(res
!= -ELINKCONG
)) {
1378 port_incr_out_seqno(p_ptr
);
1379 p_ptr
->publ
.congested
= 0;
1384 if (port_unreliable(p_ptr
)) {
1385 p_ptr
->publ
.congested
= 0;
1386 /* Just calculate msg length and return */
1387 return msg_calc_data_size(msg_sect
, num_sect
);
1393 * tipc_send_buf - send message buffer on connection
1396 int tipc_send_buf(u32 ref
, struct sk_buff
*buf
, unsigned int dsz
)
1399 struct tipc_msg
*msg
;
1405 p_ptr
= tipc_port_deref(ref
);
1406 if (!p_ptr
|| !p_ptr
->publ
.connected
)
1409 msg
= &p_ptr
->publ
.phdr
;
1410 hsz
= msg_hdr_sz(msg
);
1412 msg_set_size(msg
, sz
);
1413 if (skb_cow(buf
, hsz
))
1417 memcpy(buf
->data
, (unchar
*)msg
, hsz
);
1418 destnode
= msg_destnode(msg
);
1419 p_ptr
->publ
.congested
= 1;
1420 if (!tipc_port_congested(p_ptr
)) {
1421 if (likely(destnode
!= tipc_own_addr
))
1422 res
= tipc_send_buf_fast(buf
, destnode
);
1424 tipc_port_recv_msg(buf
);
1427 if (likely(res
!= -ELINKCONG
)) {
1428 port_incr_out_seqno(p_ptr
);
1430 p_ptr
->publ
.congested
= 0;
1434 if (port_unreliable(p_ptr
)) {
1435 p_ptr
->publ
.congested
= 0;
1442 * tipc_forward2name - forward message sections to port name
1445 int tipc_forward2name(u32 ref
,
1446 struct tipc_name
const *name
,
1449 struct iovec
const *msg_sect
,
1450 struct tipc_portid
const *orig
,
1451 unsigned int importance
)
1454 struct tipc_msg
*msg
;
1455 u32 destnode
= domain
;
1459 p_ptr
= tipc_port_deref(ref
);
1460 if (!p_ptr
|| p_ptr
->publ
.connected
)
1463 msg
= &p_ptr
->publ
.phdr
;
1464 msg_set_type(msg
, TIPC_NAMED_MSG
);
1465 msg_set_orignode(msg
, orig
->node
);
1466 msg_set_origport(msg
, orig
->ref
);
1467 msg_set_hdr_sz(msg
, LONG_H_SIZE
);
1468 msg_set_nametype(msg
, name
->type
);
1469 msg_set_nameinst(msg
, name
->instance
);
1470 msg_set_lookup_scope(msg
, addr_scope(domain
));
1471 if (importance
<= TIPC_CRITICAL_IMPORTANCE
)
1472 msg_set_importance(msg
,importance
);
1473 destport
= tipc_nametbl_translate(name
->type
, name
->instance
, &destnode
);
1474 msg_set_destnode(msg
, destnode
);
1475 msg_set_destport(msg
, destport
);
1477 if (likely(destport
|| destnode
)) {
1479 if (likely(destnode
== tipc_own_addr
))
1480 return tipc_port_recv_sections(p_ptr
, num_sect
, msg_sect
);
1481 res
= tipc_link_send_sections_fast(p_ptr
, msg_sect
, num_sect
,
1483 if (likely(res
!= -ELINKCONG
))
1485 if (port_unreliable(p_ptr
)) {
1486 /* Just calculate msg length and return */
1487 return msg_calc_data_size(msg_sect
, num_sect
);
1491 return tipc_port_reject_sections(p_ptr
, msg
, msg_sect
, num_sect
,
1496 * tipc_send2name - send message sections to port name
1499 int tipc_send2name(u32 ref
,
1500 struct tipc_name
const *name
,
1501 unsigned int domain
,
1502 unsigned int num_sect
,
1503 struct iovec
const *msg_sect
)
1505 struct tipc_portid orig
;
1508 orig
.node
= tipc_own_addr
;
1509 return tipc_forward2name(ref
, name
, domain
, num_sect
, msg_sect
, &orig
,
1510 TIPC_PORT_IMPORTANCE
);
1514 * tipc_forward_buf2name - forward message buffer to port name
1517 int tipc_forward_buf2name(u32 ref
,
1518 struct tipc_name
const *name
,
1520 struct sk_buff
*buf
,
1522 struct tipc_portid
const *orig
,
1523 unsigned int importance
)
1526 struct tipc_msg
*msg
;
1527 u32 destnode
= domain
;
1531 p_ptr
= (struct port
*)tipc_ref_deref(ref
);
1532 if (!p_ptr
|| p_ptr
->publ
.connected
)
1535 msg
= &p_ptr
->publ
.phdr
;
1536 if (importance
<= TIPC_CRITICAL_IMPORTANCE
)
1537 msg_set_importance(msg
, importance
);
1538 msg_set_type(msg
, TIPC_NAMED_MSG
);
1539 msg_set_orignode(msg
, orig
->node
);
1540 msg_set_origport(msg
, orig
->ref
);
1541 msg_set_nametype(msg
, name
->type
);
1542 msg_set_nameinst(msg
, name
->instance
);
1543 msg_set_lookup_scope(msg
, addr_scope(domain
));
1544 msg_set_hdr_sz(msg
, LONG_H_SIZE
);
1545 msg_set_size(msg
, LONG_H_SIZE
+ dsz
);
1546 destport
= tipc_nametbl_translate(name
->type
, name
->instance
, &destnode
);
1547 msg_set_destnode(msg
, destnode
);
1548 msg_set_destport(msg
, destport
);
1549 msg_dbg(msg
, "forw2name ==> ");
1550 if (skb_cow(buf
, LONG_H_SIZE
))
1552 skb_push(buf
, LONG_H_SIZE
);
1553 memcpy(buf
->data
, (unchar
*)msg
, LONG_H_SIZE
);
1554 msg_dbg(buf_msg(buf
),"PREP:");
1555 if (likely(destport
|| destnode
)) {
1557 if (destnode
== tipc_own_addr
)
1558 return tipc_port_recv_msg(buf
);
1559 res
= tipc_send_buf_fast(buf
, destnode
);
1560 if (likely(res
!= -ELINKCONG
))
1562 if (port_unreliable(p_ptr
))
1566 return tipc_reject_msg(buf
, TIPC_ERR_NO_NAME
);
1570 * tipc_send_buf2name - send message buffer to port name
1573 int tipc_send_buf2name(u32 ref
,
1574 struct tipc_name
const *dest
,
1576 struct sk_buff
*buf
,
1579 struct tipc_portid orig
;
1582 orig
.node
= tipc_own_addr
;
1583 return tipc_forward_buf2name(ref
, dest
, domain
, buf
, dsz
, &orig
,
1584 TIPC_PORT_IMPORTANCE
);
1588 * tipc_forward2port - forward message sections to port identity
1591 int tipc_forward2port(u32 ref
,
1592 struct tipc_portid
const *dest
,
1593 unsigned int num_sect
,
1594 struct iovec
const *msg_sect
,
1595 struct tipc_portid
const *orig
,
1596 unsigned int importance
)
1599 struct tipc_msg
*msg
;
1602 p_ptr
= tipc_port_deref(ref
);
1603 if (!p_ptr
|| p_ptr
->publ
.connected
)
1606 msg
= &p_ptr
->publ
.phdr
;
1607 msg_set_type(msg
, TIPC_DIRECT_MSG
);
1608 msg_set_orignode(msg
, orig
->node
);
1609 msg_set_origport(msg
, orig
->ref
);
1610 msg_set_destnode(msg
, dest
->node
);
1611 msg_set_destport(msg
, dest
->ref
);
1612 msg_set_hdr_sz(msg
, DIR_MSG_H_SIZE
);
1613 if (importance
<= TIPC_CRITICAL_IMPORTANCE
)
1614 msg_set_importance(msg
, importance
);
1616 if (dest
->node
== tipc_own_addr
)
1617 return tipc_port_recv_sections(p_ptr
, num_sect
, msg_sect
);
1618 res
= tipc_link_send_sections_fast(p_ptr
, msg_sect
, num_sect
, dest
->node
);
1619 if (likely(res
!= -ELINKCONG
))
1621 if (port_unreliable(p_ptr
)) {
1622 /* Just calculate msg length and return */
1623 return msg_calc_data_size(msg_sect
, num_sect
);
1629 * tipc_send2port - send message sections to port identity
1632 int tipc_send2port(u32 ref
,
1633 struct tipc_portid
const *dest
,
1634 unsigned int num_sect
,
1635 struct iovec
const *msg_sect
)
1637 struct tipc_portid orig
;
1640 orig
.node
= tipc_own_addr
;
1641 return tipc_forward2port(ref
, dest
, num_sect
, msg_sect
, &orig
,
1642 TIPC_PORT_IMPORTANCE
);
1646 * tipc_forward_buf2port - forward message buffer to port identity
1648 int tipc_forward_buf2port(u32 ref
,
1649 struct tipc_portid
const *dest
,
1650 struct sk_buff
*buf
,
1652 struct tipc_portid
const *orig
,
1653 unsigned int importance
)
1656 struct tipc_msg
*msg
;
1659 p_ptr
= (struct port
*)tipc_ref_deref(ref
);
1660 if (!p_ptr
|| p_ptr
->publ
.connected
)
1663 msg
= &p_ptr
->publ
.phdr
;
1664 msg_set_type(msg
, TIPC_DIRECT_MSG
);
1665 msg_set_orignode(msg
, orig
->node
);
1666 msg_set_origport(msg
, orig
->ref
);
1667 msg_set_destnode(msg
, dest
->node
);
1668 msg_set_destport(msg
, dest
->ref
);
1669 msg_set_hdr_sz(msg
, DIR_MSG_H_SIZE
);
1670 if (importance
<= TIPC_CRITICAL_IMPORTANCE
)
1671 msg_set_importance(msg
, importance
);
1672 msg_set_size(msg
, DIR_MSG_H_SIZE
+ dsz
);
1673 if (skb_cow(buf
, DIR_MSG_H_SIZE
))
1676 skb_push(buf
, DIR_MSG_H_SIZE
);
1677 memcpy(buf
->data
, (unchar
*)msg
, DIR_MSG_H_SIZE
);
1678 msg_dbg(msg
, "buf2port: ");
1680 if (dest
->node
== tipc_own_addr
)
1681 return tipc_port_recv_msg(buf
);
1682 res
= tipc_send_buf_fast(buf
, dest
->node
);
1683 if (likely(res
!= -ELINKCONG
))
1685 if (port_unreliable(p_ptr
))
1691 * tipc_send_buf2port - send message buffer to port identity
1694 int tipc_send_buf2port(u32 ref
,
1695 struct tipc_portid
const *dest
,
1696 struct sk_buff
*buf
,
1699 struct tipc_portid orig
;
1702 orig
.node
= tipc_own_addr
;
1703 return tipc_forward_buf2port(ref
, dest
, buf
, dsz
, &orig
,
1704 TIPC_PORT_IMPORTANCE
);