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
= kzalloc(sizeof(*p_ptr
), GFP_ATOMIC
);
231 warn("Port creation failed, no memory\n");
234 ref
= tipc_ref_acquire(p_ptr
, &p_ptr
->publ
.lock
);
236 warn("Port creation failed, reference table exhausted\n");
242 p_ptr
->publ
.ref
= ref
;
243 msg
= &p_ptr
->publ
.phdr
;
244 msg_init(msg
, DATA_LOW
, TIPC_NAMED_MSG
, TIPC_OK
, LONG_H_SIZE
, 0);
245 msg_set_orignode(msg
, tipc_own_addr
);
246 msg_set_prevnode(msg
, tipc_own_addr
);
247 msg_set_origport(msg
, ref
);
248 msg_set_importance(msg
,importance
);
249 p_ptr
->last_in_seqno
= 41;
251 p_ptr
->publ
.usr_handle
= usr_handle
;
252 INIT_LIST_HEAD(&p_ptr
->wait_list
);
253 INIT_LIST_HEAD(&p_ptr
->subscription
.nodesub_list
);
254 p_ptr
->congested_link
= NULL
;
255 p_ptr
->max_pkt
= MAX_PKT_DEFAULT
;
256 p_ptr
->dispatcher
= dispatcher
;
257 p_ptr
->wakeup
= wakeup
;
258 p_ptr
->user_port
= NULL
;
259 k_init_timer(&p_ptr
->timer
, (Handler
)port_timeout
, ref
);
260 spin_lock_bh(&tipc_port_list_lock
);
261 INIT_LIST_HEAD(&p_ptr
->publications
);
262 INIT_LIST_HEAD(&p_ptr
->port_list
);
263 list_add_tail(&p_ptr
->port_list
, &ports
);
264 spin_unlock_bh(&tipc_port_list_lock
);
265 tipc_port_unlock(p_ptr
);
269 int tipc_deleteport(u32 ref
)
272 struct sk_buff
*buf
= NULL
;
274 tipc_withdraw(ref
, 0, NULL
);
275 p_ptr
= tipc_port_lock(ref
);
279 tipc_ref_discard(ref
);
280 tipc_port_unlock(p_ptr
);
282 k_cancel_timer(&p_ptr
->timer
);
283 if (p_ptr
->publ
.connected
) {
284 buf
= port_build_peer_abort_msg(p_ptr
, TIPC_ERR_NO_PORT
);
285 tipc_nodesub_unsubscribe(&p_ptr
->subscription
);
287 if (p_ptr
->user_port
) {
288 tipc_reg_remove_port(p_ptr
->user_port
);
289 kfree(p_ptr
->user_port
);
292 spin_lock_bh(&tipc_port_list_lock
);
293 list_del(&p_ptr
->port_list
);
294 list_del(&p_ptr
->wait_list
);
295 spin_unlock_bh(&tipc_port_list_lock
);
296 k_term_timer(&p_ptr
->timer
);
298 dbg("Deleted port %u\n", ref
);
299 tipc_net_route_msg(buf
);
304 * tipc_get_port() - return port associated with 'ref'
306 * Note: Port is not locked.
309 struct tipc_port
*tipc_get_port(const u32 ref
)
311 return (struct tipc_port
*)tipc_ref_deref(ref
);
315 * tipc_get_handle - return user handle associated to port 'ref'
318 void *tipc_get_handle(const u32 ref
)
323 p_ptr
= tipc_port_lock(ref
);
326 handle
= p_ptr
->publ
.usr_handle
;
327 tipc_port_unlock(p_ptr
);
331 static int port_unreliable(struct port
*p_ptr
)
333 return msg_src_droppable(&p_ptr
->publ
.phdr
);
336 int tipc_portunreliable(u32 ref
, unsigned int *isunreliable
)
340 p_ptr
= tipc_port_lock(ref
);
343 *isunreliable
= port_unreliable(p_ptr
);
344 spin_unlock_bh(p_ptr
->publ
.lock
);
348 int tipc_set_portunreliable(u32 ref
, unsigned int isunreliable
)
352 p_ptr
= tipc_port_lock(ref
);
355 msg_set_src_droppable(&p_ptr
->publ
.phdr
, (isunreliable
!= 0));
356 tipc_port_unlock(p_ptr
);
360 static int port_unreturnable(struct port
*p_ptr
)
362 return msg_dest_droppable(&p_ptr
->publ
.phdr
);
365 int tipc_portunreturnable(u32 ref
, unsigned int *isunrejectable
)
369 p_ptr
= tipc_port_lock(ref
);
372 *isunrejectable
= port_unreturnable(p_ptr
);
373 spin_unlock_bh(p_ptr
->publ
.lock
);
377 int tipc_set_portunreturnable(u32 ref
, unsigned int isunrejectable
)
381 p_ptr
= tipc_port_lock(ref
);
384 msg_set_dest_droppable(&p_ptr
->publ
.phdr
, (isunrejectable
!= 0));
385 tipc_port_unlock(p_ptr
);
390 * port_build_proto_msg(): build a port level protocol
391 * or a connection abortion message. Called with
394 static struct sk_buff
*port_build_proto_msg(u32 destport
, u32 destnode
,
395 u32 origport
, u32 orignode
,
396 u32 usr
, u32 type
, u32 err
,
400 struct tipc_msg
*msg
;
402 buf
= buf_acquire(LONG_H_SIZE
);
405 msg_init(msg
, usr
, type
, err
, LONG_H_SIZE
, destnode
);
406 msg_set_destport(msg
, destport
);
407 msg_set_origport(msg
, origport
);
408 msg_set_destnode(msg
, destnode
);
409 msg_set_orignode(msg
, orignode
);
410 msg_set_transp_seqno(msg
, seqno
);
411 msg_set_msgcnt(msg
, ack
);
412 msg_dbg(msg
, "PORT>SEND>:");
417 int tipc_set_msg_option(struct tipc_port
*tp_ptr
, const char *opt
, const u32 sz
)
419 msg_expand(&tp_ptr
->phdr
, msg_destnode(&tp_ptr
->phdr
));
420 msg_set_options(&tp_ptr
->phdr
, opt
, sz
);
424 int tipc_reject_msg(struct sk_buff
*buf
, u32 err
)
426 struct tipc_msg
*msg
= buf_msg(buf
);
427 struct sk_buff
*rbuf
;
428 struct tipc_msg
*rmsg
;
430 u32 imp
= msg_importance(msg
);
431 u32 data_sz
= msg_data_sz(msg
);
433 if (data_sz
> MAX_REJECT_SIZE
)
434 data_sz
= MAX_REJECT_SIZE
;
435 if (msg_connected(msg
) && (imp
< TIPC_CRITICAL_IMPORTANCE
))
437 msg_dbg(msg
, "port->rej: ");
439 /* discard rejected message if it shouldn't be returned to sender */
440 if (msg_errcode(msg
) || msg_dest_droppable(msg
)) {
445 /* construct rejected message */
447 hdr_sz
= MCAST_H_SIZE
;
449 hdr_sz
= LONG_H_SIZE
;
450 rbuf
= buf_acquire(data_sz
+ hdr_sz
);
455 rmsg
= buf_msg(rbuf
);
456 msg_init(rmsg
, imp
, msg_type(msg
), err
, hdr_sz
, msg_orignode(msg
));
457 msg_set_destport(rmsg
, msg_origport(msg
));
458 msg_set_prevnode(rmsg
, tipc_own_addr
);
459 msg_set_origport(rmsg
, msg_destport(msg
));
461 msg_set_orignode(rmsg
, tipc_own_addr
);
463 msg_set_orignode(rmsg
, msg_destnode(msg
));
464 msg_set_size(rmsg
, data_sz
+ hdr_sz
);
465 msg_set_nametype(rmsg
, msg_nametype(msg
));
466 msg_set_nameinst(rmsg
, msg_nameinst(msg
));
467 memcpy(rbuf
->data
+ hdr_sz
, msg_data(msg
), data_sz
);
469 /* send self-abort message when rejecting on a connected port */
470 if (msg_connected(msg
)) {
471 struct sk_buff
*abuf
= NULL
;
472 struct port
*p_ptr
= tipc_port_lock(msg_destport(msg
));
475 if (p_ptr
->publ
.connected
)
476 abuf
= port_build_self_abort_msg(p_ptr
, err
);
477 tipc_port_unlock(p_ptr
);
479 tipc_net_route_msg(abuf
);
482 /* send rejected message */
484 tipc_net_route_msg(rbuf
);
488 int tipc_port_reject_sections(struct port
*p_ptr
, struct tipc_msg
*hdr
,
489 struct iovec
const *msg_sect
, u32 num_sect
,
495 res
= msg_build(hdr
, msg_sect
, num_sect
, MAX_MSG_SIZE
,
496 !p_ptr
->user_port
, &buf
);
500 return tipc_reject_msg(buf
, err
);
503 static void port_timeout(unsigned long ref
)
505 struct port
*p_ptr
= tipc_port_lock(ref
);
506 struct sk_buff
*buf
= NULL
;
511 if (!p_ptr
->publ
.connected
) {
512 tipc_port_unlock(p_ptr
);
516 /* Last probe answered ? */
517 if (p_ptr
->probing_state
== PROBING
) {
518 buf
= port_build_self_abort_msg(p_ptr
, TIPC_ERR_NO_PORT
);
520 buf
= port_build_proto_msg(port_peerport(p_ptr
),
521 port_peernode(p_ptr
),
527 port_out_seqno(p_ptr
),
529 port_incr_out_seqno(p_ptr
);
530 p_ptr
->probing_state
= PROBING
;
531 k_start_timer(&p_ptr
->timer
, p_ptr
->probing_interval
);
533 tipc_port_unlock(p_ptr
);
534 tipc_net_route_msg(buf
);
538 static void port_handle_node_down(unsigned long ref
)
540 struct port
*p_ptr
= tipc_port_lock(ref
);
541 struct sk_buff
* buf
= NULL
;
545 buf
= port_build_self_abort_msg(p_ptr
, TIPC_ERR_NO_NODE
);
546 tipc_port_unlock(p_ptr
);
547 tipc_net_route_msg(buf
);
551 static struct sk_buff
*port_build_self_abort_msg(struct port
*p_ptr
, u32 err
)
553 u32 imp
= msg_importance(&p_ptr
->publ
.phdr
);
555 if (!p_ptr
->publ
.connected
)
557 if (imp
< TIPC_CRITICAL_IMPORTANCE
)
559 return port_build_proto_msg(p_ptr
->publ
.ref
,
561 port_peerport(p_ptr
),
562 port_peernode(p_ptr
),
566 p_ptr
->last_in_seqno
+ 1,
571 static struct sk_buff
*port_build_peer_abort_msg(struct port
*p_ptr
, u32 err
)
573 u32 imp
= msg_importance(&p_ptr
->publ
.phdr
);
575 if (!p_ptr
->publ
.connected
)
577 if (imp
< TIPC_CRITICAL_IMPORTANCE
)
579 return port_build_proto_msg(port_peerport(p_ptr
),
580 port_peernode(p_ptr
),
586 port_out_seqno(p_ptr
),
590 void tipc_port_recv_proto_msg(struct sk_buff
*buf
)
592 struct tipc_msg
*msg
= buf_msg(buf
);
593 struct port
*p_ptr
= tipc_port_lock(msg_destport(msg
));
595 struct sk_buff
*r_buf
= NULL
;
596 struct sk_buff
*abort_buf
= NULL
;
598 msg_dbg(msg
, "PORT<RECV<:");
601 err
= TIPC_ERR_NO_PORT
;
602 } else if (p_ptr
->publ
.connected
) {
603 if (port_peernode(p_ptr
) != msg_orignode(msg
))
604 err
= TIPC_ERR_NO_PORT
;
605 if (port_peerport(p_ptr
) != msg_origport(msg
))
606 err
= TIPC_ERR_NO_PORT
;
607 if (!err
&& msg_routed(msg
)) {
608 u32 seqno
= msg_transp_seqno(msg
);
609 u32 myno
= ++p_ptr
->last_in_seqno
;
611 err
= TIPC_ERR_NO_PORT
;
612 abort_buf
= port_build_self_abort_msg(p_ptr
, err
);
615 if (msg_type(msg
) == CONN_ACK
) {
616 int wakeup
= tipc_port_congested(p_ptr
) &&
617 p_ptr
->publ
.congested
&&
619 p_ptr
->acked
+= msg_msgcnt(msg
);
620 if (tipc_port_congested(p_ptr
))
622 p_ptr
->publ
.congested
= 0;
625 p_ptr
->wakeup(&p_ptr
->publ
);
628 } else if (p_ptr
->publ
.published
) {
629 err
= TIPC_ERR_NO_PORT
;
632 r_buf
= port_build_proto_msg(msg_origport(msg
),
645 if (msg_type(msg
) == CONN_PROBE
) {
646 r_buf
= port_build_proto_msg(msg_origport(msg
),
653 port_out_seqno(p_ptr
),
656 p_ptr
->probing_state
= CONFIRMED
;
657 port_incr_out_seqno(p_ptr
);
660 tipc_port_unlock(p_ptr
);
661 tipc_net_route_msg(r_buf
);
662 tipc_net_route_msg(abort_buf
);
666 static void port_print(struct port
*p_ptr
, struct print_buf
*buf
, int full_id
)
668 struct publication
*publ
;
671 tipc_printf(buf
, "<%u.%u.%u:%u>:",
672 tipc_zone(tipc_own_addr
), tipc_cluster(tipc_own_addr
),
673 tipc_node(tipc_own_addr
), p_ptr
->publ
.ref
);
675 tipc_printf(buf
, "%-10u:", p_ptr
->publ
.ref
);
677 if (p_ptr
->publ
.connected
) {
678 u32 dport
= port_peerport(p_ptr
);
679 u32 destnode
= port_peernode(p_ptr
);
681 tipc_printf(buf
, " connected to <%u.%u.%u:%u>",
682 tipc_zone(destnode
), tipc_cluster(destnode
),
683 tipc_node(destnode
), dport
);
684 if (p_ptr
->publ
.conn_type
!= 0)
685 tipc_printf(buf
, " via {%u,%u}",
686 p_ptr
->publ
.conn_type
,
687 p_ptr
->publ
.conn_instance
);
689 else if (p_ptr
->publ
.published
) {
690 tipc_printf(buf
, " bound to");
691 list_for_each_entry(publ
, &p_ptr
->publications
, pport_list
) {
692 if (publ
->lower
== publ
->upper
)
693 tipc_printf(buf
, " {%u,%u}", publ
->type
,
696 tipc_printf(buf
, " {%u,%u,%u}", publ
->type
,
697 publ
->lower
, publ
->upper
);
700 tipc_printf(buf
, "\n");
703 #define MAX_PORT_QUERY 32768
705 struct sk_buff
*tipc_port_get_ports(void)
708 struct tlv_desc
*rep_tlv
;
713 buf
= tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY
));
716 rep_tlv
= (struct tlv_desc
*)buf
->data
;
718 tipc_printbuf_init(&pb
, TLV_DATA(rep_tlv
), MAX_PORT_QUERY
);
719 spin_lock_bh(&tipc_port_list_lock
);
720 list_for_each_entry(p_ptr
, &ports
, port_list
) {
721 spin_lock_bh(p_ptr
->publ
.lock
);
722 port_print(p_ptr
, &pb
, 0);
723 spin_unlock_bh(p_ptr
->publ
.lock
);
725 spin_unlock_bh(&tipc_port_list_lock
);
726 str_len
= tipc_printbuf_validate(&pb
);
728 skb_put(buf
, TLV_SPACE(str_len
));
729 TLV_SET(rep_tlv
, TIPC_TLV_ULTRA_STRING
, NULL
, str_len
);
736 #define MAX_PORT_STATS 2000
738 struct sk_buff
*port_show_stats(const void *req_tlv_area
, int req_tlv_space
)
743 struct tlv_desc
*rep_tlv
;
747 if (!TLV_CHECK(req_tlv_area
, req_tlv_space
, TIPC_TLV_PORT_REF
))
748 return cfg_reply_error_string(TIPC_CFG_TLV_ERROR
);
750 ref
= *(u32
*)TLV_DATA(req_tlv_area
);
753 p_ptr
= tipc_port_lock(ref
);
755 return cfg_reply_error_string("port not found");
757 buf
= tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS
));
759 tipc_port_unlock(p_ptr
);
762 rep_tlv
= (struct tlv_desc
*)buf
->data
;
764 tipc_printbuf_init(&pb
, TLV_DATA(rep_tlv
), MAX_PORT_STATS
);
765 port_print(p_ptr
, &pb
, 1);
766 /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */
767 tipc_port_unlock(p_ptr
);
768 str_len
= tipc_printbuf_validate(&pb
);
770 skb_put(buf
, TLV_SPACE(str_len
));
771 TLV_SET(rep_tlv
, TIPC_TLV_ULTRA_STRING
, NULL
, str_len
);
778 void tipc_port_reinit(void)
781 struct tipc_msg
*msg
;
783 spin_lock_bh(&tipc_port_list_lock
);
784 list_for_each_entry(p_ptr
, &ports
, port_list
) {
785 msg
= &p_ptr
->publ
.phdr
;
786 if (msg_orignode(msg
) == tipc_own_addr
)
788 msg_set_orignode(msg
, tipc_own_addr
);
790 spin_unlock_bh(&tipc_port_list_lock
);
795 * port_dispatcher_sigh(): Signal handler for messages destinated
796 * to the tipc_port interface.
799 static void port_dispatcher_sigh(void *dummy
)
803 spin_lock_bh(&queue_lock
);
804 buf
= msg_queue_head
;
805 msg_queue_head
= NULL
;
806 spin_unlock_bh(&queue_lock
);
810 struct user_port
*up_ptr
;
811 struct tipc_portid orig
;
812 struct tipc_name_seq dseq
;
818 struct sk_buff
*next
= buf
->next
;
819 struct tipc_msg
*msg
= buf_msg(buf
);
820 u32 dref
= msg_destport(msg
);
822 message_type
= msg_type(msg
);
823 if (message_type
> TIPC_DIRECT_MSG
)
824 goto reject
; /* Unsupported message type */
826 p_ptr
= tipc_port_lock(dref
);
828 goto reject
; /* Port deleted while msg in queue */
830 orig
.ref
= msg_origport(msg
);
831 orig
.node
= msg_orignode(msg
);
832 up_ptr
= p_ptr
->user_port
;
833 usr_handle
= up_ptr
->usr_handle
;
834 connected
= p_ptr
->publ
.connected
;
835 published
= p_ptr
->publ
.published
;
837 if (unlikely(msg_errcode(msg
)))
840 switch (message_type
) {
843 tipc_conn_msg_event cb
= up_ptr
->conn_msg_cb
;
844 u32 peer_port
= port_peerport(p_ptr
);
845 u32 peer_node
= port_peernode(p_ptr
);
847 spin_unlock_bh(p_ptr
->publ
.lock
);
848 if (unlikely(!connected
)) {
849 if (unlikely(published
))
851 tipc_connect2port(dref
,&orig
);
853 if (unlikely(msg_origport(msg
) != peer_port
))
855 if (unlikely(msg_orignode(msg
) != peer_node
))
859 if (unlikely(++p_ptr
->publ
.conn_unacked
>=
860 TIPC_FLOW_CONTROL_WIN
))
861 tipc_acknowledge(dref
,
862 p_ptr
->publ
.conn_unacked
);
863 skb_pull(buf
, msg_hdr_sz(msg
));
864 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
868 case TIPC_DIRECT_MSG
:{
869 tipc_msg_event cb
= up_ptr
->msg_cb
;
871 spin_unlock_bh(p_ptr
->publ
.lock
);
872 if (unlikely(connected
))
876 skb_pull(buf
, msg_hdr_sz(msg
));
877 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
878 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
= (message_type
== TIPC_NAMED_MSG
)
896 ? dseq
.lower
: msg_nameupper(msg
);
897 skb_pull(buf
, msg_hdr_sz(msg
));
898 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
899 msg_data_sz(msg
), msg_importance(msg
),
909 switch (message_type
) {
912 tipc_conn_shutdown_event cb
=
914 u32 peer_port
= port_peerport(p_ptr
);
915 u32 peer_node
= port_peernode(p_ptr
);
917 spin_unlock_bh(p_ptr
->publ
.lock
);
918 if (!connected
|| !cb
)
920 if (msg_origport(msg
) != peer_port
)
922 if (msg_orignode(msg
) != peer_node
)
924 tipc_disconnect(dref
);
925 skb_pull(buf
, msg_hdr_sz(msg
));
926 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
927 msg_data_sz(msg
), msg_errcode(msg
));
930 case TIPC_DIRECT_MSG
:{
931 tipc_msg_err_event cb
= up_ptr
->err_cb
;
933 spin_unlock_bh(p_ptr
->publ
.lock
);
934 if (connected
|| !cb
)
936 skb_pull(buf
, msg_hdr_sz(msg
));
937 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
938 msg_data_sz(msg
), msg_errcode(msg
), &orig
);
942 case TIPC_NAMED_MSG
:{
943 tipc_named_msg_err_event cb
=
944 up_ptr
->named_err_cb
;
946 spin_unlock_bh(p_ptr
->publ
.lock
);
947 if (connected
|| !cb
)
949 dseq
.type
= msg_nametype(msg
);
950 dseq
.lower
= msg_nameinst(msg
);
951 dseq
.upper
= (message_type
== TIPC_NAMED_MSG
)
952 ? dseq
.lower
: msg_nameupper(msg
);
953 skb_pull(buf
, msg_hdr_sz(msg
));
954 cb(usr_handle
, dref
, &buf
, msg_data(msg
),
955 msg_data_sz(msg
), msg_errcode(msg
), &dseq
);
964 tipc_reject_msg(buf
, TIPC_ERR_NO_PORT
);
970 * port_dispatcher(): Dispatcher for messages destinated
971 * to the tipc_port interface. Called with port locked.
974 static u32
port_dispatcher(struct tipc_port
*dummy
, struct sk_buff
*buf
)
977 spin_lock_bh(&queue_lock
);
978 if (msg_queue_head
) {
979 msg_queue_tail
->next
= buf
;
980 msg_queue_tail
= buf
;
982 msg_queue_tail
= msg_queue_head
= buf
;
983 tipc_k_signal((Handler
)port_dispatcher_sigh
, 0);
985 spin_unlock_bh(&queue_lock
);
990 * Wake up port after congestion: Called with port locked,
994 static void port_wakeup_sh(unsigned long ref
)
997 struct user_port
*up_ptr
;
998 tipc_continue_event cb
= NULL
;
1001 p_ptr
= tipc_port_lock(ref
);
1003 up_ptr
= p_ptr
->user_port
;
1005 cb
= up_ptr
->continue_event_cb
;
1006 uh
= up_ptr
->usr_handle
;
1008 tipc_port_unlock(p_ptr
);
1015 static void port_wakeup(struct tipc_port
*p_ptr
)
1017 tipc_k_signal((Handler
)port_wakeup_sh
, p_ptr
->ref
);
1020 void tipc_acknowledge(u32 ref
, u32 ack
)
1023 struct sk_buff
*buf
= NULL
;
1025 p_ptr
= tipc_port_lock(ref
);
1028 if (p_ptr
->publ
.connected
) {
1029 p_ptr
->publ
.conn_unacked
-= ack
;
1030 buf
= port_build_proto_msg(port_peerport(p_ptr
),
1031 port_peernode(p_ptr
),
1037 port_out_seqno(p_ptr
),
1040 tipc_port_unlock(p_ptr
);
1041 tipc_net_route_msg(buf
);
1045 * tipc_createport(): user level call. Will add port to
1046 * registry if non-zero user_ref.
1049 int tipc_createport(u32 user_ref
,
1051 unsigned int importance
,
1052 tipc_msg_err_event error_cb
,
1053 tipc_named_msg_err_event named_error_cb
,
1054 tipc_conn_shutdown_event conn_error_cb
,
1055 tipc_msg_event msg_cb
,
1056 tipc_named_msg_event named_msg_cb
,
1057 tipc_conn_msg_event conn_msg_cb
,
1058 tipc_continue_event continue_event_cb
,/* May be zero */
1061 struct user_port
*up_ptr
;
1065 up_ptr
= kmalloc(sizeof(*up_ptr
), GFP_ATOMIC
);
1067 warn("Port creation failed, no memory\n");
1070 ref
= tipc_createport_raw(NULL
, port_dispatcher
, port_wakeup
, importance
);
1071 p_ptr
= tipc_port_lock(ref
);
1077 p_ptr
->user_port
= up_ptr
;
1078 up_ptr
->user_ref
= user_ref
;
1079 up_ptr
->usr_handle
= usr_handle
;
1080 up_ptr
->ref
= p_ptr
->publ
.ref
;
1081 up_ptr
->err_cb
= error_cb
;
1082 up_ptr
->named_err_cb
= named_error_cb
;
1083 up_ptr
->conn_err_cb
= conn_error_cb
;
1084 up_ptr
->msg_cb
= msg_cb
;
1085 up_ptr
->named_msg_cb
= named_msg_cb
;
1086 up_ptr
->conn_msg_cb
= conn_msg_cb
;
1087 up_ptr
->continue_event_cb
= continue_event_cb
;
1088 INIT_LIST_HEAD(&up_ptr
->uport_list
);
1089 tipc_reg_add_port(up_ptr
);
1090 *portref
= p_ptr
->publ
.ref
;
1091 dbg(" tipc_createport: %x with ref %u\n", p_ptr
, p_ptr
->publ
.ref
);
1092 tipc_port_unlock(p_ptr
);
1096 int tipc_ownidentity(u32 ref
, struct tipc_portid
*id
)
1099 id
->node
= tipc_own_addr
;
1103 int tipc_portimportance(u32 ref
, unsigned int *importance
)
1107 p_ptr
= tipc_port_lock(ref
);
1110 *importance
= (unsigned int)msg_importance(&p_ptr
->publ
.phdr
);
1111 spin_unlock_bh(p_ptr
->publ
.lock
);
1115 int tipc_set_portimportance(u32 ref
, unsigned int imp
)
1119 if (imp
> TIPC_CRITICAL_IMPORTANCE
)
1122 p_ptr
= tipc_port_lock(ref
);
1125 msg_set_importance(&p_ptr
->publ
.phdr
, (u32
)imp
);
1126 spin_unlock_bh(p_ptr
->publ
.lock
);
1131 int tipc_publish(u32 ref
, unsigned int scope
, struct tipc_name_seq
const *seq
)
1134 struct publication
*publ
;
1138 p_ptr
= tipc_port_lock(ref
);
1139 dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, "
1140 "lower = %u, upper = %u\n",
1141 ref
, p_ptr
, p_ptr
->publ
.connected
, scope
, seq
->lower
, seq
->upper
);
1144 if (p_ptr
->publ
.connected
)
1146 if (seq
->lower
> seq
->upper
)
1148 if ((scope
< TIPC_ZONE_SCOPE
) || (scope
> TIPC_NODE_SCOPE
))
1150 key
= ref
+ p_ptr
->pub_count
+ 1;
1155 publ
= tipc_nametbl_publish(seq
->type
, seq
->lower
, seq
->upper
,
1156 scope
, p_ptr
->publ
.ref
, key
);
1158 list_add(&publ
->pport_list
, &p_ptr
->publications
);
1160 p_ptr
->publ
.published
= 1;
1164 tipc_port_unlock(p_ptr
);
1168 int tipc_withdraw(u32 ref
, unsigned int scope
, struct tipc_name_seq
const *seq
)
1171 struct publication
*publ
;
1172 struct publication
*tpubl
;
1175 p_ptr
= tipc_port_lock(ref
);
1179 list_for_each_entry_safe(publ
, tpubl
,
1180 &p_ptr
->publications
, pport_list
) {
1181 tipc_nametbl_withdraw(publ
->type
, publ
->lower
,
1182 publ
->ref
, publ
->key
);
1186 list_for_each_entry_safe(publ
, tpubl
,
1187 &p_ptr
->publications
, pport_list
) {
1188 if (publ
->scope
!= scope
)
1190 if (publ
->type
!= seq
->type
)
1192 if (publ
->lower
!= seq
->lower
)
1194 if (publ
->upper
!= seq
->upper
)
1196 tipc_nametbl_withdraw(publ
->type
, publ
->lower
,
1197 publ
->ref
, publ
->key
);
1202 if (list_empty(&p_ptr
->publications
))
1203 p_ptr
->publ
.published
= 0;
1204 tipc_port_unlock(p_ptr
);
1208 int tipc_connect2port(u32 ref
, struct tipc_portid
const *peer
)
1211 struct tipc_msg
*msg
;
1214 p_ptr
= tipc_port_lock(ref
);
1217 if (p_ptr
->publ
.published
|| p_ptr
->publ
.connected
)
1222 msg
= &p_ptr
->publ
.phdr
;
1223 msg_set_destnode(msg
, peer
->node
);
1224 msg_set_destport(msg
, peer
->ref
);
1225 msg_set_orignode(msg
, tipc_own_addr
);
1226 msg_set_origport(msg
, p_ptr
->publ
.ref
);
1227 msg_set_transp_seqno(msg
, 42);
1228 msg_set_type(msg
, TIPC_CONN_MSG
);
1229 if (!may_route(peer
->node
))
1230 msg_set_hdr_sz(msg
, SHORT_H_SIZE
);
1232 msg_set_hdr_sz(msg
, LONG_H_SIZE
);
1234 p_ptr
->probing_interval
= PROBING_INTERVAL
;
1235 p_ptr
->probing_state
= CONFIRMED
;
1236 p_ptr
->publ
.connected
= 1;
1237 k_start_timer(&p_ptr
->timer
, p_ptr
->probing_interval
);
1239 tipc_nodesub_subscribe(&p_ptr
->subscription
,peer
->node
,
1240 (void *)(unsigned long)ref
,
1241 (net_ev_handler
)port_handle_node_down
);
1244 tipc_port_unlock(p_ptr
);
1245 p_ptr
->max_pkt
= tipc_link_get_max_pkt(peer
->node
, ref
);
1250 * tipc_disconnect(): Disconnect port form peer.
1251 * This is a node local operation.
1254 int tipc_disconnect(u32 ref
)
1257 int res
= -ENOTCONN
;
1259 p_ptr
= tipc_port_lock(ref
);
1262 if (p_ptr
->publ
.connected
) {
1263 p_ptr
->publ
.connected
= 0;
1264 /* let timer expire on it's own to avoid deadlock! */
1265 tipc_nodesub_unsubscribe(&p_ptr
->subscription
);
1268 tipc_port_unlock(p_ptr
);
1273 * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect
1275 int tipc_shutdown(u32 ref
)
1278 struct sk_buff
*buf
= NULL
;
1280 p_ptr
= tipc_port_lock(ref
);
1284 if (p_ptr
->publ
.connected
) {
1285 u32 imp
= msg_importance(&p_ptr
->publ
.phdr
);
1286 if (imp
< TIPC_CRITICAL_IMPORTANCE
)
1288 buf
= port_build_proto_msg(port_peerport(p_ptr
),
1289 port_peernode(p_ptr
),
1295 port_out_seqno(p_ptr
),
1298 tipc_port_unlock(p_ptr
);
1299 tipc_net_route_msg(buf
);
1300 return tipc_disconnect(ref
);
1303 int tipc_isconnected(u32 ref
, int *isconnected
)
1307 p_ptr
= tipc_port_lock(ref
);
1310 *isconnected
= p_ptr
->publ
.connected
;
1311 tipc_port_unlock(p_ptr
);
1315 int tipc_peer(u32 ref
, struct tipc_portid
*peer
)
1320 p_ptr
= tipc_port_lock(ref
);
1323 if (p_ptr
->publ
.connected
) {
1324 peer
->ref
= port_peerport(p_ptr
);
1325 peer
->node
= port_peernode(p_ptr
);
1329 tipc_port_unlock(p_ptr
);
1333 int tipc_ref_valid(u32 ref
)
1335 /* Works irrespective of type */
1336 return !!tipc_ref_deref(ref
);
1341 * tipc_port_recv_sections(): Concatenate and deliver sectioned
1342 * message for this node.
1345 int tipc_port_recv_sections(struct port
*sender
, unsigned int num_sect
,
1346 struct iovec
const *msg_sect
)
1348 struct sk_buff
*buf
;
1351 res
= msg_build(&sender
->publ
.phdr
, msg_sect
, num_sect
,
1352 MAX_MSG_SIZE
, !sender
->user_port
, &buf
);
1354 tipc_port_recv_msg(buf
);
1359 * tipc_send - send message sections on connection
1362 int tipc_send(u32 ref
, unsigned int num_sect
, struct iovec
const *msg_sect
)
1368 p_ptr
= tipc_port_deref(ref
);
1369 if (!p_ptr
|| !p_ptr
->publ
.connected
)
1372 p_ptr
->publ
.congested
= 1;
1373 if (!tipc_port_congested(p_ptr
)) {
1374 destnode
= port_peernode(p_ptr
);
1375 if (likely(destnode
!= tipc_own_addr
))
1376 res
= tipc_link_send_sections_fast(p_ptr
, msg_sect
, num_sect
,
1379 res
= tipc_port_recv_sections(p_ptr
, num_sect
, msg_sect
);
1381 if (likely(res
!= -ELINKCONG
)) {
1382 port_incr_out_seqno(p_ptr
);
1383 p_ptr
->publ
.congested
= 0;
1388 if (port_unreliable(p_ptr
)) {
1389 p_ptr
->publ
.congested
= 0;
1390 /* Just calculate msg length and return */
1391 return msg_calc_data_size(msg_sect
, num_sect
);
1397 * tipc_send_buf - send message buffer on connection
1400 int tipc_send_buf(u32 ref
, struct sk_buff
*buf
, unsigned int dsz
)
1403 struct tipc_msg
*msg
;
1409 p_ptr
= tipc_port_deref(ref
);
1410 if (!p_ptr
|| !p_ptr
->publ
.connected
)
1413 msg
= &p_ptr
->publ
.phdr
;
1414 hsz
= msg_hdr_sz(msg
);
1416 msg_set_size(msg
, sz
);
1417 if (skb_cow(buf
, hsz
))
1421 memcpy(buf
->data
, (unchar
*)msg
, hsz
);
1422 destnode
= msg_destnode(msg
);
1423 p_ptr
->publ
.congested
= 1;
1424 if (!tipc_port_congested(p_ptr
)) {
1425 if (likely(destnode
!= tipc_own_addr
))
1426 res
= tipc_send_buf_fast(buf
, destnode
);
1428 tipc_port_recv_msg(buf
);
1431 if (likely(res
!= -ELINKCONG
)) {
1432 port_incr_out_seqno(p_ptr
);
1434 p_ptr
->publ
.congested
= 0;
1438 if (port_unreliable(p_ptr
)) {
1439 p_ptr
->publ
.congested
= 0;
1446 * tipc_forward2name - forward message sections to port name
1449 int tipc_forward2name(u32 ref
,
1450 struct tipc_name
const *name
,
1453 struct iovec
const *msg_sect
,
1454 struct tipc_portid
const *orig
,
1455 unsigned int importance
)
1458 struct tipc_msg
*msg
;
1459 u32 destnode
= domain
;
1463 p_ptr
= tipc_port_deref(ref
);
1464 if (!p_ptr
|| p_ptr
->publ
.connected
)
1467 msg
= &p_ptr
->publ
.phdr
;
1468 msg_set_type(msg
, TIPC_NAMED_MSG
);
1469 msg_set_orignode(msg
, orig
->node
);
1470 msg_set_origport(msg
, orig
->ref
);
1471 msg_set_hdr_sz(msg
, LONG_H_SIZE
);
1472 msg_set_nametype(msg
, name
->type
);
1473 msg_set_nameinst(msg
, name
->instance
);
1474 msg_set_lookup_scope(msg
, addr_scope(domain
));
1475 if (importance
<= TIPC_CRITICAL_IMPORTANCE
)
1476 msg_set_importance(msg
,importance
);
1477 destport
= tipc_nametbl_translate(name
->type
, name
->instance
, &destnode
);
1478 msg_set_destnode(msg
, destnode
);
1479 msg_set_destport(msg
, destport
);
1481 if (likely(destport
|| destnode
)) {
1483 if (likely(destnode
== tipc_own_addr
))
1484 return tipc_port_recv_sections(p_ptr
, num_sect
, msg_sect
);
1485 res
= tipc_link_send_sections_fast(p_ptr
, msg_sect
, num_sect
,
1487 if (likely(res
!= -ELINKCONG
))
1489 if (port_unreliable(p_ptr
)) {
1490 /* Just calculate msg length and return */
1491 return msg_calc_data_size(msg_sect
, num_sect
);
1495 return tipc_port_reject_sections(p_ptr
, msg
, msg_sect
, num_sect
,
1500 * tipc_send2name - send message sections to port name
1503 int tipc_send2name(u32 ref
,
1504 struct tipc_name
const *name
,
1505 unsigned int domain
,
1506 unsigned int num_sect
,
1507 struct iovec
const *msg_sect
)
1509 struct tipc_portid orig
;
1512 orig
.node
= tipc_own_addr
;
1513 return tipc_forward2name(ref
, name
, domain
, num_sect
, msg_sect
, &orig
,
1514 TIPC_PORT_IMPORTANCE
);
1518 * tipc_forward_buf2name - forward message buffer to port name
1521 int tipc_forward_buf2name(u32 ref
,
1522 struct tipc_name
const *name
,
1524 struct sk_buff
*buf
,
1526 struct tipc_portid
const *orig
,
1527 unsigned int importance
)
1530 struct tipc_msg
*msg
;
1531 u32 destnode
= domain
;
1535 p_ptr
= (struct port
*)tipc_ref_deref(ref
);
1536 if (!p_ptr
|| p_ptr
->publ
.connected
)
1539 msg
= &p_ptr
->publ
.phdr
;
1540 if (importance
<= TIPC_CRITICAL_IMPORTANCE
)
1541 msg_set_importance(msg
, importance
);
1542 msg_set_type(msg
, TIPC_NAMED_MSG
);
1543 msg_set_orignode(msg
, orig
->node
);
1544 msg_set_origport(msg
, orig
->ref
);
1545 msg_set_nametype(msg
, name
->type
);
1546 msg_set_nameinst(msg
, name
->instance
);
1547 msg_set_lookup_scope(msg
, addr_scope(domain
));
1548 msg_set_hdr_sz(msg
, LONG_H_SIZE
);
1549 msg_set_size(msg
, LONG_H_SIZE
+ dsz
);
1550 destport
= tipc_nametbl_translate(name
->type
, name
->instance
, &destnode
);
1551 msg_set_destnode(msg
, destnode
);
1552 msg_set_destport(msg
, destport
);
1553 msg_dbg(msg
, "forw2name ==> ");
1554 if (skb_cow(buf
, LONG_H_SIZE
))
1556 skb_push(buf
, LONG_H_SIZE
);
1557 memcpy(buf
->data
, (unchar
*)msg
, LONG_H_SIZE
);
1558 msg_dbg(buf_msg(buf
),"PREP:");
1559 if (likely(destport
|| destnode
)) {
1561 if (destnode
== tipc_own_addr
)
1562 return tipc_port_recv_msg(buf
);
1563 res
= tipc_send_buf_fast(buf
, destnode
);
1564 if (likely(res
!= -ELINKCONG
))
1566 if (port_unreliable(p_ptr
))
1570 return tipc_reject_msg(buf
, TIPC_ERR_NO_NAME
);
1574 * tipc_send_buf2name - send message buffer to port name
1577 int tipc_send_buf2name(u32 ref
,
1578 struct tipc_name
const *dest
,
1580 struct sk_buff
*buf
,
1583 struct tipc_portid orig
;
1586 orig
.node
= tipc_own_addr
;
1587 return tipc_forward_buf2name(ref
, dest
, domain
, buf
, dsz
, &orig
,
1588 TIPC_PORT_IMPORTANCE
);
1592 * tipc_forward2port - forward message sections to port identity
1595 int tipc_forward2port(u32 ref
,
1596 struct tipc_portid
const *dest
,
1597 unsigned int num_sect
,
1598 struct iovec
const *msg_sect
,
1599 struct tipc_portid
const *orig
,
1600 unsigned int importance
)
1603 struct tipc_msg
*msg
;
1606 p_ptr
= tipc_port_deref(ref
);
1607 if (!p_ptr
|| p_ptr
->publ
.connected
)
1610 msg
= &p_ptr
->publ
.phdr
;
1611 msg_set_type(msg
, TIPC_DIRECT_MSG
);
1612 msg_set_orignode(msg
, orig
->node
);
1613 msg_set_origport(msg
, orig
->ref
);
1614 msg_set_destnode(msg
, dest
->node
);
1615 msg_set_destport(msg
, dest
->ref
);
1616 msg_set_hdr_sz(msg
, DIR_MSG_H_SIZE
);
1617 if (importance
<= TIPC_CRITICAL_IMPORTANCE
)
1618 msg_set_importance(msg
, importance
);
1620 if (dest
->node
== tipc_own_addr
)
1621 return tipc_port_recv_sections(p_ptr
, num_sect
, msg_sect
);
1622 res
= tipc_link_send_sections_fast(p_ptr
, msg_sect
, num_sect
, dest
->node
);
1623 if (likely(res
!= -ELINKCONG
))
1625 if (port_unreliable(p_ptr
)) {
1626 /* Just calculate msg length and return */
1627 return msg_calc_data_size(msg_sect
, num_sect
);
1633 * tipc_send2port - send message sections to port identity
1636 int tipc_send2port(u32 ref
,
1637 struct tipc_portid
const *dest
,
1638 unsigned int num_sect
,
1639 struct iovec
const *msg_sect
)
1641 struct tipc_portid orig
;
1644 orig
.node
= tipc_own_addr
;
1645 return tipc_forward2port(ref
, dest
, num_sect
, msg_sect
, &orig
,
1646 TIPC_PORT_IMPORTANCE
);
1650 * tipc_forward_buf2port - forward message buffer to port identity
1652 int tipc_forward_buf2port(u32 ref
,
1653 struct tipc_portid
const *dest
,
1654 struct sk_buff
*buf
,
1656 struct tipc_portid
const *orig
,
1657 unsigned int importance
)
1660 struct tipc_msg
*msg
;
1663 p_ptr
= (struct port
*)tipc_ref_deref(ref
);
1664 if (!p_ptr
|| p_ptr
->publ
.connected
)
1667 msg
= &p_ptr
->publ
.phdr
;
1668 msg_set_type(msg
, TIPC_DIRECT_MSG
);
1669 msg_set_orignode(msg
, orig
->node
);
1670 msg_set_origport(msg
, orig
->ref
);
1671 msg_set_destnode(msg
, dest
->node
);
1672 msg_set_destport(msg
, dest
->ref
);
1673 msg_set_hdr_sz(msg
, DIR_MSG_H_SIZE
);
1674 if (importance
<= TIPC_CRITICAL_IMPORTANCE
)
1675 msg_set_importance(msg
, importance
);
1676 msg_set_size(msg
, DIR_MSG_H_SIZE
+ dsz
);
1677 if (skb_cow(buf
, DIR_MSG_H_SIZE
))
1680 skb_push(buf
, DIR_MSG_H_SIZE
);
1681 memcpy(buf
->data
, (unchar
*)msg
, DIR_MSG_H_SIZE
);
1682 msg_dbg(msg
, "buf2port: ");
1684 if (dest
->node
== tipc_own_addr
)
1685 return tipc_port_recv_msg(buf
);
1686 res
= tipc_send_buf_fast(buf
, dest
->node
);
1687 if (likely(res
!= -ELINKCONG
))
1689 if (port_unreliable(p_ptr
))
1695 * tipc_send_buf2port - send message buffer to port identity
1698 int tipc_send_buf2port(u32 ref
,
1699 struct tipc_portid
const *dest
,
1700 struct sk_buff
*buf
,
1703 struct tipc_portid orig
;
1706 orig
.node
= tipc_own_addr
;
1707 return tipc_forward_buf2port(ref
, dest
, buf
, dsz
, &orig
,
1708 TIPC_PORT_IMPORTANCE
);