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 DEFINE_SPINLOCK(tipc_port_list_lock
);
61 static DEFINE_SPINLOCK(queue_lock
);
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
;
173 /* Create destination port list, if one wasn't supplied */
176 tipc_nametbl_mc_translate(msg_nametype(msg
),
184 /* Deliver a copy of message to each destination port */
186 if (dp
->count
!= 0) {
187 if (dp
->count
== 1) {
188 msg_set_destport(msg
, dp
->ports
[0]);
189 tipc_port_recv_msg(buf
);
190 tipc_port_list_free(dp
);
193 for (; cnt
< dp
->count
; cnt
++) {
194 int index
= cnt
% PLSIZE
;
195 struct sk_buff
*b
= skb_clone(buf
, GFP_ATOMIC
);
198 warn("Unable to deliver multicast message(s)\n");
199 msg_dbg(msg
, "LOST:");
202 if ((index
== 0) && (cnt
!= 0)) {
205 msg_set_destport(buf_msg(b
),item
->ports
[index
]);
206 tipc_port_recv_msg(b
);
211 tipc_port_list_free(dp
);
215 * tipc_createport_raw - create a native TIPC port
217 * Returns local port reference
220 u32
tipc_createport_raw(void *usr_handle
,
221 u32 (*dispatcher
)(struct tipc_port
*, struct sk_buff
*),
222 void (*wakeup
)(struct tipc_port
*),
223 const u32 importance
)
226 struct tipc_msg
*msg
;
229 p_ptr
= kmalloc(sizeof(*p_ptr
), GFP_ATOMIC
);
231 warn("Port creation failed, no memory\n");
234 memset(p_ptr
, 0, sizeof(*p_ptr
));
235 ref
= tipc_ref_acquire(p_ptr
, &p_ptr
->publ
.lock
);
237 warn("Port creation failed, reference table exhausted\n");
243 p_ptr
->publ
.ref
= ref
;
244 msg
= &p_ptr
->publ
.phdr
;
245 msg_init(msg
, DATA_LOW
, TIPC_NAMED_MSG
, TIPC_OK
, LONG_H_SIZE
, 0);
246 msg_set_orignode(msg
, tipc_own_addr
);
247 msg_set_prevnode(msg
, tipc_own_addr
);
248 msg_set_origport(msg
, ref
);
249 msg_set_importance(msg
,importance
);
250 p_ptr
->last_in_seqno
= 41;
252 p_ptr
->publ
.usr_handle
= usr_handle
;
253 INIT_LIST_HEAD(&p_ptr
->wait_list
);
254 INIT_LIST_HEAD(&p_ptr
->subscription
.nodesub_list
);
255 p_ptr
->congested_link
= NULL
;
256 p_ptr
->max_pkt
= MAX_PKT_DEFAULT
;
257 p_ptr
->dispatcher
= dispatcher
;
258 p_ptr
->wakeup
= wakeup
;
259 p_ptr
->user_port
= NULL
;
260 k_init_timer(&p_ptr
->timer
, (Handler
)port_timeout
, ref
);
261 spin_lock_bh(&tipc_port_list_lock
);
262 INIT_LIST_HEAD(&p_ptr
->publications
);
263 INIT_LIST_HEAD(&p_ptr
->port_list
);
264 list_add_tail(&p_ptr
->port_list
, &ports
);
265 spin_unlock_bh(&tipc_port_list_lock
);
266 tipc_port_unlock(p_ptr
);
270 int tipc_deleteport(u32 ref
)
273 struct sk_buff
*buf
= NULL
;
275 tipc_withdraw(ref
, 0, NULL
);
276 p_ptr
= tipc_port_lock(ref
);
280 tipc_ref_discard(ref
);
281 tipc_port_unlock(p_ptr
);
283 k_cancel_timer(&p_ptr
->timer
);
284 if (p_ptr
->publ
.connected
) {
285 buf
= port_build_peer_abort_msg(p_ptr
, TIPC_ERR_NO_PORT
);
286 tipc_nodesub_unsubscribe(&p_ptr
->subscription
);
288 if (p_ptr
->user_port
) {
289 tipc_reg_remove_port(p_ptr
->user_port
);
290 kfree(p_ptr
->user_port
);
293 spin_lock_bh(&tipc_port_list_lock
);
294 list_del(&p_ptr
->port_list
);
295 list_del(&p_ptr
->wait_list
);
296 spin_unlock_bh(&tipc_port_list_lock
);
297 k_term_timer(&p_ptr
->timer
);
299 dbg("Deleted port %u\n", ref
);
300 tipc_net_route_msg(buf
);
305 * tipc_get_port() - return port associated with 'ref'
307 * Note: Port is not locked.
310 struct tipc_port
*tipc_get_port(const u32 ref
)
312 return (struct tipc_port
*)tipc_ref_deref(ref
);
316 * tipc_get_handle - return user handle associated to port 'ref'
319 void *tipc_get_handle(const u32 ref
)
324 p_ptr
= tipc_port_lock(ref
);
327 handle
= p_ptr
->publ
.usr_handle
;
328 tipc_port_unlock(p_ptr
);
332 static int port_unreliable(struct port
*p_ptr
)
334 return msg_src_droppable(&p_ptr
->publ
.phdr
);
337 int tipc_portunreliable(u32 ref
, unsigned int *isunreliable
)
341 p_ptr
= tipc_port_lock(ref
);
344 *isunreliable
= port_unreliable(p_ptr
);
345 spin_unlock_bh(p_ptr
->publ
.lock
);
349 int tipc_set_portunreliable(u32 ref
, unsigned int isunreliable
)
353 p_ptr
= tipc_port_lock(ref
);
356 msg_set_src_droppable(&p_ptr
->publ
.phdr
, (isunreliable
!= 0));
357 tipc_port_unlock(p_ptr
);
361 static int port_unreturnable(struct port
*p_ptr
)
363 return msg_dest_droppable(&p_ptr
->publ
.phdr
);
366 int tipc_portunreturnable(u32 ref
, unsigned int *isunrejectable
)
370 p_ptr
= tipc_port_lock(ref
);
373 *isunrejectable
= port_unreturnable(p_ptr
);
374 spin_unlock_bh(p_ptr
->publ
.lock
);
378 int tipc_set_portunreturnable(u32 ref
, unsigned int isunrejectable
)
382 p_ptr
= tipc_port_lock(ref
);
385 msg_set_dest_droppable(&p_ptr
->publ
.phdr
, (isunrejectable
!= 0));
386 tipc_port_unlock(p_ptr
);
391 * port_build_proto_msg(): build a port level protocol
392 * or a connection abortion message. Called with
395 static struct sk_buff
*port_build_proto_msg(u32 destport
, u32 destnode
,
396 u32 origport
, u32 orignode
,
397 u32 usr
, u32 type
, u32 err
,
401 struct tipc_msg
*msg
;
403 buf
= buf_acquire(LONG_H_SIZE
);
406 msg_init(msg
, usr
, type
, err
, LONG_H_SIZE
, destnode
);
407 msg_set_destport(msg
, destport
);
408 msg_set_origport(msg
, origport
);
409 msg_set_destnode(msg
, destnode
);
410 msg_set_orignode(msg
, orignode
);
411 msg_set_transp_seqno(msg
, seqno
);
412 msg_set_msgcnt(msg
, ack
);
413 msg_dbg(msg
, "PORT>SEND>:");
418 int tipc_set_msg_option(struct tipc_port
*tp_ptr
, const char *opt
, const u32 sz
)
420 msg_expand(&tp_ptr
->phdr
, msg_destnode(&tp_ptr
->phdr
));
421 msg_set_options(&tp_ptr
->phdr
, opt
, sz
);
425 int tipc_reject_msg(struct sk_buff
*buf
, u32 err
)
427 struct tipc_msg
*msg
= buf_msg(buf
);
428 struct sk_buff
*rbuf
;
429 struct tipc_msg
*rmsg
;
431 u32 imp
= msg_importance(msg
);
432 u32 data_sz
= msg_data_sz(msg
);
434 if (data_sz
> MAX_REJECT_SIZE
)
435 data_sz
= MAX_REJECT_SIZE
;
436 if (msg_connected(msg
) && (imp
< TIPC_CRITICAL_IMPORTANCE
))
438 msg_dbg(msg
, "port->rej: ");
440 /* discard rejected message if it shouldn't be returned to sender */
441 if (msg_errcode(msg
) || msg_dest_droppable(msg
)) {
446 /* construct rejected message */
448 hdr_sz
= MCAST_H_SIZE
;
450 hdr_sz
= LONG_H_SIZE
;
451 rbuf
= buf_acquire(data_sz
+ hdr_sz
);
456 rmsg
= buf_msg(rbuf
);
457 msg_init(rmsg
, imp
, msg_type(msg
), err
, hdr_sz
, msg_orignode(msg
));
458 msg_set_destport(rmsg
, msg_origport(msg
));
459 msg_set_prevnode(rmsg
, tipc_own_addr
);
460 msg_set_origport(rmsg
, msg_destport(msg
));
462 msg_set_orignode(rmsg
, tipc_own_addr
);
464 msg_set_orignode(rmsg
, msg_destnode(msg
));
465 msg_set_size(rmsg
, data_sz
+ hdr_sz
);
466 msg_set_nametype(rmsg
, msg_nametype(msg
));
467 msg_set_nameinst(rmsg
, msg_nameinst(msg
));
468 memcpy(rbuf
->data
+ hdr_sz
, msg_data(msg
), data_sz
);
470 /* send self-abort message when rejecting on a connected port */
471 if (msg_connected(msg
)) {
472 struct sk_buff
*abuf
= NULL
;
473 struct port
*p_ptr
= tipc_port_lock(msg_destport(msg
));
476 if (p_ptr
->publ
.connected
)
477 abuf
= port_build_self_abort_msg(p_ptr
, err
);
478 tipc_port_unlock(p_ptr
);
480 tipc_net_route_msg(abuf
);
483 /* send rejected message */
485 tipc_net_route_msg(rbuf
);
489 int tipc_port_reject_sections(struct port
*p_ptr
, struct tipc_msg
*hdr
,
490 struct iovec
const *msg_sect
, u32 num_sect
,
496 res
= msg_build(hdr
, msg_sect
, num_sect
, MAX_MSG_SIZE
,
497 !p_ptr
->user_port
, &buf
);
501 return tipc_reject_msg(buf
, err
);
504 static void port_timeout(unsigned long ref
)
506 struct port
*p_ptr
= tipc_port_lock(ref
);
507 struct sk_buff
*buf
= NULL
;
509 if (!p_ptr
|| !p_ptr
->publ
.connected
)
512 /* Last probe answered ? */
513 if (p_ptr
->probing_state
== PROBING
) {
514 buf
= port_build_self_abort_msg(p_ptr
, TIPC_ERR_NO_PORT
);
516 buf
= port_build_proto_msg(port_peerport(p_ptr
),
517 port_peernode(p_ptr
),
523 port_out_seqno(p_ptr
),
525 port_incr_out_seqno(p_ptr
);
526 p_ptr
->probing_state
= PROBING
;
527 k_start_timer(&p_ptr
->timer
, p_ptr
->probing_interval
);
529 tipc_port_unlock(p_ptr
);
530 tipc_net_route_msg(buf
);
534 static void port_handle_node_down(unsigned long ref
)
536 struct port
*p_ptr
= tipc_port_lock(ref
);
537 struct sk_buff
* buf
= NULL
;
541 buf
= port_build_self_abort_msg(p_ptr
, TIPC_ERR_NO_NODE
);
542 tipc_port_unlock(p_ptr
);
543 tipc_net_route_msg(buf
);
547 static struct sk_buff
*port_build_self_abort_msg(struct port
*p_ptr
, u32 err
)
549 u32 imp
= msg_importance(&p_ptr
->publ
.phdr
);
551 if (!p_ptr
->publ
.connected
)
553 if (imp
< TIPC_CRITICAL_IMPORTANCE
)
555 return port_build_proto_msg(p_ptr
->publ
.ref
,
557 port_peerport(p_ptr
),
558 port_peernode(p_ptr
),
562 p_ptr
->last_in_seqno
+ 1,
567 static struct sk_buff
*port_build_peer_abort_msg(struct port
*p_ptr
, u32 err
)
569 u32 imp
= msg_importance(&p_ptr
->publ
.phdr
);
571 if (!p_ptr
->publ
.connected
)
573 if (imp
< TIPC_CRITICAL_IMPORTANCE
)
575 return port_build_proto_msg(port_peerport(p_ptr
),
576 port_peernode(p_ptr
),
582 port_out_seqno(p_ptr
),
586 void tipc_port_recv_proto_msg(struct sk_buff
*buf
)
588 struct tipc_msg
*msg
= buf_msg(buf
);
589 struct port
*p_ptr
= tipc_port_lock(msg_destport(msg
));
591 struct sk_buff
*r_buf
= NULL
;
592 struct sk_buff
*abort_buf
= NULL
;
594 msg_dbg(msg
, "PORT<RECV<:");
597 err
= TIPC_ERR_NO_PORT
;
598 } else if (p_ptr
->publ
.connected
) {
599 if (port_peernode(p_ptr
) != msg_orignode(msg
))
600 err
= TIPC_ERR_NO_PORT
;
601 if (port_peerport(p_ptr
) != msg_origport(msg
))
602 err
= TIPC_ERR_NO_PORT
;
603 if (!err
&& msg_routed(msg
)) {
604 u32 seqno
= msg_transp_seqno(msg
);
605 u32 myno
= ++p_ptr
->last_in_seqno
;
607 err
= TIPC_ERR_NO_PORT
;
608 abort_buf
= port_build_self_abort_msg(p_ptr
, err
);
611 if (msg_type(msg
) == CONN_ACK
) {
612 int wakeup
= tipc_port_congested(p_ptr
) &&
613 p_ptr
->publ
.congested
&&
615 p_ptr
->acked
+= msg_msgcnt(msg
);
616 if (tipc_port_congested(p_ptr
))
618 p_ptr
->publ
.congested
= 0;
621 p_ptr
->wakeup(&p_ptr
->publ
);
624 } else if (p_ptr
->publ
.published
) {
625 err
= TIPC_ERR_NO_PORT
;
628 r_buf
= port_build_proto_msg(msg_origport(msg
),
641 if (msg_type(msg
) == CONN_PROBE
) {
642 r_buf
= port_build_proto_msg(msg_origport(msg
),
649 port_out_seqno(p_ptr
),
652 p_ptr
->probing_state
= CONFIRMED
;
653 port_incr_out_seqno(p_ptr
);
656 tipc_port_unlock(p_ptr
);
657 tipc_net_route_msg(r_buf
);
658 tipc_net_route_msg(abort_buf
);
662 static void port_print(struct port
*p_ptr
, struct print_buf
*buf
, int full_id
)
664 struct publication
*publ
;
667 tipc_printf(buf
, "<%u.%u.%u:%u>:",
668 tipc_zone(tipc_own_addr
), tipc_cluster(tipc_own_addr
),
669 tipc_node(tipc_own_addr
), p_ptr
->publ
.ref
);
671 tipc_printf(buf
, "%-10u:", p_ptr
->publ
.ref
);
673 if (p_ptr
->publ
.connected
) {
674 u32 dport
= port_peerport(p_ptr
);
675 u32 destnode
= port_peernode(p_ptr
);
677 tipc_printf(buf
, " connected to <%u.%u.%u:%u>",
678 tipc_zone(destnode
), tipc_cluster(destnode
),
679 tipc_node(destnode
), dport
);
680 if (p_ptr
->publ
.conn_type
!= 0)
681 tipc_printf(buf
, " via {%u,%u}",
682 p_ptr
->publ
.conn_type
,
683 p_ptr
->publ
.conn_instance
);
685 else if (p_ptr
->publ
.published
) {
686 tipc_printf(buf
, " bound to");
687 list_for_each_entry(publ
, &p_ptr
->publications
, pport_list
) {
688 if (publ
->lower
== publ
->upper
)
689 tipc_printf(buf
, " {%u,%u}", publ
->type
,
692 tipc_printf(buf
, " {%u,%u,%u}", publ
->type
,
693 publ
->lower
, publ
->upper
);
696 tipc_printf(buf
, "\n");
699 #define MAX_PORT_QUERY 32768
701 struct sk_buff
*tipc_port_get_ports(void)
704 struct tlv_desc
*rep_tlv
;
709 buf
= tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY
));
712 rep_tlv
= (struct tlv_desc
*)buf
->data
;
714 tipc_printbuf_init(&pb
, TLV_DATA(rep_tlv
), MAX_PORT_QUERY
);
715 spin_lock_bh(&tipc_port_list_lock
);
716 list_for_each_entry(p_ptr
, &ports
, port_list
) {
717 spin_lock_bh(p_ptr
->publ
.lock
);
718 port_print(p_ptr
, &pb
, 0);
719 spin_unlock_bh(p_ptr
->publ
.lock
);
721 spin_unlock_bh(&tipc_port_list_lock
);
722 str_len
= tipc_printbuf_validate(&pb
);
724 skb_put(buf
, TLV_SPACE(str_len
));
725 TLV_SET(rep_tlv
, TIPC_TLV_ULTRA_STRING
, NULL
, str_len
);
732 #define MAX_PORT_STATS 2000
734 struct sk_buff
*port_show_stats(const void *req_tlv_area
, int req_tlv_space
)
739 struct tlv_desc
*rep_tlv
;
743 if (!TLV_CHECK(req_tlv_area
, req_tlv_space
, TIPC_TLV_PORT_REF
))
744 return cfg_reply_error_string(TIPC_CFG_TLV_ERROR
);
746 ref
= *(u32
*)TLV_DATA(req_tlv_area
);
749 p_ptr
= tipc_port_lock(ref
);
751 return cfg_reply_error_string("port not found");
753 buf
= tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS
));
755 tipc_port_unlock(p_ptr
);
758 rep_tlv
= (struct tlv_desc
*)buf
->data
;
760 tipc_printbuf_init(&pb
, TLV_DATA(rep_tlv
), MAX_PORT_STATS
);
761 port_print(p_ptr
, &pb
, 1);
762 /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */
763 tipc_port_unlock(p_ptr
);
764 str_len
= tipc_printbuf_validate(&pb
);
766 skb_put(buf
, TLV_SPACE(str_len
));
767 TLV_SET(rep_tlv
, TIPC_TLV_ULTRA_STRING
, NULL
, str_len
);
774 void tipc_port_reinit(void)
777 struct tipc_msg
*msg
;
779 spin_lock_bh(&tipc_port_list_lock
);
780 list_for_each_entry(p_ptr
, &ports
, port_list
) {
781 msg
= &p_ptr
->publ
.phdr
;
782 if (msg_orignode(msg
) == tipc_own_addr
)
784 msg_set_orignode(msg
, tipc_own_addr
);
786 spin_unlock_bh(&tipc_port_list_lock
);
791 * port_dispatcher_sigh(): Signal handler for messages destinated
792 * to the tipc_port interface.
795 static void port_dispatcher_sigh(void *dummy
)
799 spin_lock_bh(&queue_lock
);
800 buf
= msg_queue_head
;
801 msg_queue_head
= NULL
;
802 spin_unlock_bh(&queue_lock
);
806 struct user_port
*up_ptr
;
807 struct tipc_portid orig
;
808 struct tipc_name_seq dseq
;
814 struct sk_buff
*next
= buf
->next
;
815 struct tipc_msg
*msg
= buf_msg(buf
);
816 u32 dref
= msg_destport(msg
);
818 message_type
= msg_type(msg
);
819 if (message_type
> TIPC_DIRECT_MSG
)
820 goto reject
; /* Unsupported message type */
822 p_ptr
= tipc_port_lock(dref
);
824 goto reject
; /* Port deleted while msg in queue */
826 orig
.ref
= msg_origport(msg
);
827 orig
.node
= msg_orignode(msg
);
828 up_ptr
= p_ptr
->user_port
;
829 usr_handle
= up_ptr
->usr_handle
;
830 connected
= p_ptr
->publ
.connected
;
831 published
= p_ptr
->publ
.published
;
833 if (unlikely(msg_errcode(msg
)))
836 switch (message_type
) {
839 tipc_conn_msg_event cb
= up_ptr
->conn_msg_cb
;
840 u32 peer_port
= port_peerport(p_ptr
);
841 u32 peer_node
= port_peernode(p_ptr
);
843 spin_unlock_bh(p_ptr
->publ
.lock
);
844 if (unlikely(!connected
)) {
845 if (unlikely(published
))
847 tipc_connect2port(dref
,&orig
);
849 if (unlikely(msg_origport(msg
) != peer_port
))
851 if (unlikely(msg_orignode(msg
) != peer_node
))
855 if (unlikely(++p_ptr
->publ
.conn_unacked
>=
856 TIPC_FLOW_CONTROL_WIN
))
857 tipc_acknowledge(dref
,
858 p_ptr
->publ
.conn_unacked
);
859 skb_pull(buf
, msg_hdr_sz(msg
));
860 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
864 case TIPC_DIRECT_MSG
:{
865 tipc_msg_event cb
= up_ptr
->msg_cb
;
867 spin_unlock_bh(p_ptr
->publ
.lock
);
868 if (unlikely(connected
))
872 skb_pull(buf
, msg_hdr_sz(msg
));
873 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
874 msg_data_sz(msg
), msg_importance(msg
),
879 case TIPC_NAMED_MSG
:{
880 tipc_named_msg_event cb
= up_ptr
->named_msg_cb
;
882 spin_unlock_bh(p_ptr
->publ
.lock
);
883 if (unlikely(connected
))
887 if (unlikely(!published
))
889 dseq
.type
= msg_nametype(msg
);
890 dseq
.lower
= msg_nameinst(msg
);
891 dseq
.upper
= (message_type
== TIPC_NAMED_MSG
)
892 ? dseq
.lower
: msg_nameupper(msg
);
893 skb_pull(buf
, msg_hdr_sz(msg
));
894 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
895 msg_data_sz(msg
), msg_importance(msg
),
905 switch (message_type
) {
908 tipc_conn_shutdown_event cb
=
910 u32 peer_port
= port_peerport(p_ptr
);
911 u32 peer_node
= port_peernode(p_ptr
);
913 spin_unlock_bh(p_ptr
->publ
.lock
);
914 if (!connected
|| !cb
)
916 if (msg_origport(msg
) != peer_port
)
918 if (msg_orignode(msg
) != peer_node
)
920 tipc_disconnect(dref
);
921 skb_pull(buf
, msg_hdr_sz(msg
));
922 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
923 msg_data_sz(msg
), msg_errcode(msg
));
926 case TIPC_DIRECT_MSG
:{
927 tipc_msg_err_event cb
= up_ptr
->err_cb
;
929 spin_unlock_bh(p_ptr
->publ
.lock
);
930 if (connected
|| !cb
)
932 skb_pull(buf
, msg_hdr_sz(msg
));
933 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
934 msg_data_sz(msg
), msg_errcode(msg
), &orig
);
938 case TIPC_NAMED_MSG
:{
939 tipc_named_msg_err_event cb
=
940 up_ptr
->named_err_cb
;
942 spin_unlock_bh(p_ptr
->publ
.lock
);
943 if (connected
|| !cb
)
945 dseq
.type
= msg_nametype(msg
);
946 dseq
.lower
= msg_nameinst(msg
);
947 dseq
.upper
= (message_type
== TIPC_NAMED_MSG
)
948 ? dseq
.lower
: msg_nameupper(msg
);
949 skb_pull(buf
, msg_hdr_sz(msg
));
950 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
951 msg_data_sz(msg
), msg_errcode(msg
), &dseq
);
960 tipc_reject_msg(buf
, TIPC_ERR_NO_PORT
);
966 * port_dispatcher(): Dispatcher for messages destinated
967 * to the tipc_port interface. Called with port locked.
970 static u32
port_dispatcher(struct tipc_port
*dummy
, struct sk_buff
*buf
)
973 spin_lock_bh(&queue_lock
);
974 if (msg_queue_head
) {
975 msg_queue_tail
->next
= buf
;
976 msg_queue_tail
= buf
;
978 msg_queue_tail
= msg_queue_head
= buf
;
979 tipc_k_signal((Handler
)port_dispatcher_sigh
, 0);
981 spin_unlock_bh(&queue_lock
);
986 * Wake up port after congestion: Called with port locked,
990 static void port_wakeup_sh(unsigned long ref
)
993 struct user_port
*up_ptr
;
994 tipc_continue_event cb
= NULL
;
997 p_ptr
= tipc_port_lock(ref
);
999 up_ptr
= p_ptr
->user_port
;
1001 cb
= up_ptr
->continue_event_cb
;
1002 uh
= up_ptr
->usr_handle
;
1004 tipc_port_unlock(p_ptr
);
1011 static void port_wakeup(struct tipc_port
*p_ptr
)
1013 tipc_k_signal((Handler
)port_wakeup_sh
, p_ptr
->ref
);
1016 void tipc_acknowledge(u32 ref
, u32 ack
)
1019 struct sk_buff
*buf
= NULL
;
1021 p_ptr
= tipc_port_lock(ref
);
1024 if (p_ptr
->publ
.connected
) {
1025 p_ptr
->publ
.conn_unacked
-= ack
;
1026 buf
= port_build_proto_msg(port_peerport(p_ptr
),
1027 port_peernode(p_ptr
),
1033 port_out_seqno(p_ptr
),
1036 tipc_port_unlock(p_ptr
);
1037 tipc_net_route_msg(buf
);
1041 * tipc_createport(): user level call. Will add port to
1042 * registry if non-zero user_ref.
1045 int tipc_createport(u32 user_ref
,
1047 unsigned int importance
,
1048 tipc_msg_err_event error_cb
,
1049 tipc_named_msg_err_event named_error_cb
,
1050 tipc_conn_shutdown_event conn_error_cb
,
1051 tipc_msg_event msg_cb
,
1052 tipc_named_msg_event named_msg_cb
,
1053 tipc_conn_msg_event conn_msg_cb
,
1054 tipc_continue_event continue_event_cb
,/* May be zero */
1057 struct user_port
*up_ptr
;
1061 up_ptr
= (struct user_port
*)kmalloc(sizeof(*up_ptr
), GFP_ATOMIC
);
1063 warn("Port creation failed, no memory\n");
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
);