2 * net/tipc/port.c: TIPC port code
4 * Copyright (c) 1992-2007, 2014, Ericsson AB
5 * Copyright (c) 2004-2008, 2010-2013, 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
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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.
40 #include "name_table.h"
43 /* Connection management: */
44 #define PROBING_INTERVAL 3600000 /* [ms] => 1 h */
48 #define MAX_REJECT_SIZE 1024
50 DEFINE_SPINLOCK(tipc_port_list_lock);
52 static LIST_HEAD(ports);
53 static void port_handle_node_down(unsigned long ref);
54 static struct sk_buff *port_build_self_abort_msg(struct tipc_port *, u32 err);
55 static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *, u32 err);
56 static void port_timeout(unsigned long ref);
59 * tipc_port_peer_msg - verify message was sent by connected port's peer
61 * Handles cases where the node's network address has changed from
62 * the default of <0.0.0> to its configured setting.
64 int tipc_port_peer_msg(struct tipc_port *p_ptr, struct tipc_msg *msg)
69 if (msg_origport(msg) != tipc_port_peerport(p_ptr))
72 orignode = msg_orignode(msg);
73 peernode = tipc_port_peernode(p_ptr);
74 return (orignode == peernode) ||
75 (!orignode && (peernode == tipc_own_addr)) ||
76 (!peernode && (orignode == tipc_own_addr));
80 * tipc_port_mcast_xmit - send a multicast message to local and remote
83 int tipc_port_mcast_xmit(u32 ref, struct tipc_name_seq const *seq,
84 struct iovec const *msg_sect, unsigned int len)
88 struct sk_buff *ibuf = NULL;
89 struct tipc_port_list dports = {0, NULL, };
90 struct tipc_port *oport = tipc_port_deref(ref);
97 /* Create multicast message */
99 msg_set_type(hdr, TIPC_MCAST_MSG);
100 msg_set_lookup_scope(hdr, TIPC_CLUSTER_SCOPE);
101 msg_set_destport(hdr, 0);
102 msg_set_destnode(hdr, 0);
103 msg_set_nametype(hdr, seq->type);
104 msg_set_namelower(hdr, seq->lower);
105 msg_set_nameupper(hdr, seq->upper);
106 msg_set_hdr_sz(hdr, MCAST_H_SIZE);
107 res = tipc_msg_build(hdr, msg_sect, len, MAX_MSG_SIZE, &buf);
111 /* Figure out where to send multicast message */
112 ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper,
113 TIPC_NODE_SCOPE, &dports);
115 /* Send message to destinations (duplicate it only if necessary) */
117 if (dports.count != 0) {
118 ibuf = skb_copy(buf, GFP_ATOMIC);
120 tipc_port_list_free(&dports);
125 res = tipc_bclink_xmit(buf);
126 if ((res < 0) && (dports.count != 0))
134 tipc_port_mcast_rcv(ibuf, &dports);
136 tipc_port_list_free(&dports);
142 * tipc_port_mcast_rcv - deliver multicast message to all destination ports
144 * If there is no port list, perform a lookup to create one
146 void tipc_port_mcast_rcv(struct sk_buff *buf, struct tipc_port_list *dp)
148 struct tipc_msg *msg;
149 struct tipc_port_list dports = {0, NULL, };
150 struct tipc_port_list *item = dp;
155 /* Create destination port list, if one wasn't supplied */
157 tipc_nametbl_mc_translate(msg_nametype(msg),
165 /* Deliver a copy of message to each destination port */
166 if (dp->count != 0) {
167 msg_set_destnode(msg, tipc_own_addr);
168 if (dp->count == 1) {
169 msg_set_destport(msg, dp->ports[0]);
171 tipc_port_list_free(dp);
174 for (; cnt < dp->count; cnt++) {
175 int index = cnt % PLSIZE;
176 struct sk_buff *b = skb_clone(buf, GFP_ATOMIC);
179 pr_warn("Unable to deliver multicast message(s)\n");
182 if ((index == 0) && (cnt != 0))
184 msg_set_destport(buf_msg(b), item->ports[index]);
190 tipc_port_list_free(dp);
194 void tipc_port_wakeup(struct tipc_port *port)
196 tipc_sk_wakeup(tipc_port_to_sk(port));
199 /* tipc_port_init - intiate TIPC port and lock it
201 * Returns obtained reference if initialization is successful, zero otherwise
203 u32 tipc_port_init(struct tipc_port *p_ptr,
204 const unsigned int importance)
206 struct tipc_msg *msg;
209 ref = tipc_ref_acquire(p_ptr, &p_ptr->lock);
211 pr_warn("Port registration failed, ref. table exhausted\n");
215 p_ptr->max_pkt = MAX_PKT_DEFAULT;
217 INIT_LIST_HEAD(&p_ptr->wait_list);
218 INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list);
219 k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref);
220 INIT_LIST_HEAD(&p_ptr->publications);
221 INIT_LIST_HEAD(&p_ptr->port_list);
224 * Must hold port list lock while initializing message header template
225 * to ensure a change to node's own network address doesn't result
226 * in template containing out-dated network address information
228 spin_lock_bh(&tipc_port_list_lock);
230 tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0);
231 msg_set_origport(msg, ref);
232 list_add_tail(&p_ptr->port_list, &ports);
233 spin_unlock_bh(&tipc_port_list_lock);
237 void tipc_port_destroy(struct tipc_port *p_ptr)
239 struct sk_buff *buf = NULL;
241 tipc_withdraw(p_ptr, 0, NULL);
243 spin_lock_bh(p_ptr->lock);
244 tipc_ref_discard(p_ptr->ref);
245 spin_unlock_bh(p_ptr->lock);
247 k_cancel_timer(&p_ptr->timer);
248 if (p_ptr->connected) {
249 buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT);
250 tipc_nodesub_unsubscribe(&p_ptr->subscription);
253 spin_lock_bh(&tipc_port_list_lock);
254 list_del(&p_ptr->port_list);
255 list_del(&p_ptr->wait_list);
256 spin_unlock_bh(&tipc_port_list_lock);
257 k_term_timer(&p_ptr->timer);
258 tipc_net_route_msg(buf);
262 * port_build_proto_msg(): create connection protocol message for port
264 * On entry the port must be locked and connected.
266 static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr,
270 struct tipc_msg *msg;
272 buf = tipc_buf_acquire(INT_H_SIZE);
275 tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE,
276 tipc_port_peernode(p_ptr));
277 msg_set_destport(msg, tipc_port_peerport(p_ptr));
278 msg_set_origport(msg, p_ptr->ref);
279 msg_set_msgcnt(msg, ack);
284 int tipc_reject_msg(struct sk_buff *buf, u32 err)
286 struct tipc_msg *msg = buf_msg(buf);
287 struct sk_buff *rbuf;
288 struct tipc_msg *rmsg;
291 u32 data_sz = msg_data_sz(msg);
295 /* discard rejected message if it shouldn't be returned to sender */
296 if (WARN(!msg_isdata(msg),
297 "attempt to reject message with user=%u", msg_user(msg))) {
301 if (msg_errcode(msg) || msg_dest_droppable(msg))
305 * construct returned message by copying rejected message header and
306 * data (or subset), then updating header fields that need adjusting
308 hdr_sz = msg_hdr_sz(msg);
309 rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE);
311 rbuf = tipc_buf_acquire(rmsg_sz);
315 rmsg = buf_msg(rbuf);
316 skb_copy_to_linear_data(rbuf, msg, rmsg_sz);
318 if (msg_connected(rmsg)) {
319 imp = msg_importance(rmsg);
320 if (imp < TIPC_CRITICAL_IMPORTANCE)
321 msg_set_importance(rmsg, ++imp);
323 msg_set_non_seq(rmsg, 0);
324 msg_set_size(rmsg, rmsg_sz);
325 msg_set_errcode(rmsg, err);
326 msg_set_prevnode(rmsg, tipc_own_addr);
327 msg_swap_words(rmsg, 4, 5);
328 if (!msg_short(rmsg))
329 msg_swap_words(rmsg, 6, 7);
331 /* send self-abort message when rejecting on a connected port */
332 if (msg_connected(msg)) {
333 struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg));
336 struct sk_buff *abuf = NULL;
338 if (p_ptr->connected)
339 abuf = port_build_self_abort_msg(p_ptr, err);
340 tipc_port_unlock(p_ptr);
341 tipc_net_route_msg(abuf);
345 /* send returned message & dispose of rejected message */
346 src_node = msg_prevnode(msg);
347 if (in_own_node(src_node))
350 tipc_link_xmit(rbuf, src_node, msg_link_selector(rmsg));
356 int tipc_port_iovec_reject(struct tipc_port *p_ptr, struct tipc_msg *hdr,
357 struct iovec const *msg_sect, unsigned int len,
363 res = tipc_msg_build(hdr, msg_sect, len, MAX_MSG_SIZE, &buf);
367 return tipc_reject_msg(buf, err);
370 static void port_timeout(unsigned long ref)
372 struct tipc_port *p_ptr = tipc_port_lock(ref);
373 struct sk_buff *buf = NULL;
378 if (!p_ptr->connected) {
379 tipc_port_unlock(p_ptr);
383 /* Last probe answered ? */
384 if (p_ptr->probing_state == PROBING) {
385 buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT);
387 buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0);
388 p_ptr->probing_state = PROBING;
389 k_start_timer(&p_ptr->timer, p_ptr->probing_interval);
391 tipc_port_unlock(p_ptr);
392 tipc_net_route_msg(buf);
396 static void port_handle_node_down(unsigned long ref)
398 struct tipc_port *p_ptr = tipc_port_lock(ref);
399 struct sk_buff *buf = NULL;
403 buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE);
404 tipc_port_unlock(p_ptr);
405 tipc_net_route_msg(buf);
409 static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err)
411 struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err);
414 struct tipc_msg *msg = buf_msg(buf);
415 msg_swap_words(msg, 4, 5);
416 msg_swap_words(msg, 6, 7);
422 static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err)
425 struct tipc_msg *msg;
428 if (!p_ptr->connected)
431 buf = tipc_buf_acquire(BASIC_H_SIZE);
434 memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE);
435 msg_set_hdr_sz(msg, BASIC_H_SIZE);
436 msg_set_size(msg, BASIC_H_SIZE);
437 imp = msg_importance(msg);
438 if (imp < TIPC_CRITICAL_IMPORTANCE)
439 msg_set_importance(msg, ++imp);
440 msg_set_errcode(msg, err);
445 void tipc_port_proto_rcv(struct sk_buff *buf)
447 struct tipc_msg *msg = buf_msg(buf);
448 struct tipc_port *p_ptr;
449 struct sk_buff *r_buf = NULL;
450 u32 destport = msg_destport(msg);
453 /* Validate connection */
454 p_ptr = tipc_port_lock(destport);
455 if (!p_ptr || !p_ptr->connected || !tipc_port_peer_msg(p_ptr, msg)) {
456 r_buf = tipc_buf_acquire(BASIC_H_SIZE);
458 msg = buf_msg(r_buf);
459 tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG,
460 BASIC_H_SIZE, msg_orignode(msg));
461 msg_set_errcode(msg, TIPC_ERR_NO_PORT);
462 msg_set_origport(msg, destport);
463 msg_set_destport(msg, msg_origport(msg));
466 tipc_port_unlock(p_ptr);
470 /* Process protocol message sent by peer */
471 switch (msg_type(msg)) {
473 wakeable = tipc_port_congested(p_ptr) && p_ptr->congested;
474 p_ptr->acked += msg_msgcnt(msg);
475 if (!tipc_port_congested(p_ptr)) {
476 p_ptr->congested = 0;
478 tipc_port_wakeup(p_ptr);
482 r_buf = port_build_proto_msg(p_ptr, CONN_PROBE_REPLY, 0);
485 /* CONN_PROBE_REPLY or unrecognized - no action required */
488 p_ptr->probing_state = CONFIRMED;
489 tipc_port_unlock(p_ptr);
491 tipc_net_route_msg(r_buf);
495 static int port_print(struct tipc_port *p_ptr, char *buf, int len, int full_id)
497 struct publication *publ;
501 ret = tipc_snprintf(buf, len, "<%u.%u.%u:%u>:",
502 tipc_zone(tipc_own_addr),
503 tipc_cluster(tipc_own_addr),
504 tipc_node(tipc_own_addr), p_ptr->ref);
506 ret = tipc_snprintf(buf, len, "%-10u:", p_ptr->ref);
508 if (p_ptr->connected) {
509 u32 dport = tipc_port_peerport(p_ptr);
510 u32 destnode = tipc_port_peernode(p_ptr);
512 ret += tipc_snprintf(buf + ret, len - ret,
513 " connected to <%u.%u.%u:%u>",
515 tipc_cluster(destnode),
516 tipc_node(destnode), dport);
517 if (p_ptr->conn_type != 0)
518 ret += tipc_snprintf(buf + ret, len - ret,
519 " via {%u,%u}", p_ptr->conn_type,
520 p_ptr->conn_instance);
521 } else if (p_ptr->published) {
522 ret += tipc_snprintf(buf + ret, len - ret, " bound to");
523 list_for_each_entry(publ, &p_ptr->publications, pport_list) {
524 if (publ->lower == publ->upper)
525 ret += tipc_snprintf(buf + ret, len - ret,
526 " {%u,%u}", publ->type,
529 ret += tipc_snprintf(buf + ret, len - ret,
530 " {%u,%u,%u}", publ->type,
531 publ->lower, publ->upper);
534 ret += tipc_snprintf(buf + ret, len - ret, "\n");
538 struct sk_buff *tipc_port_get_ports(void)
541 struct tlv_desc *rep_tlv;
544 struct tipc_port *p_ptr;
547 buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN));
550 rep_tlv = (struct tlv_desc *)buf->data;
551 pb = TLV_DATA(rep_tlv);
552 pb_len = ULTRA_STRING_MAX_LEN;
554 spin_lock_bh(&tipc_port_list_lock);
555 list_for_each_entry(p_ptr, &ports, port_list) {
556 spin_lock_bh(p_ptr->lock);
557 str_len += port_print(p_ptr, pb, pb_len, 0);
558 spin_unlock_bh(p_ptr->lock);
560 spin_unlock_bh(&tipc_port_list_lock);
561 str_len += 1; /* for "\0" */
562 skb_put(buf, TLV_SPACE(str_len));
563 TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len);
568 void tipc_port_reinit(void)
570 struct tipc_port *p_ptr;
571 struct tipc_msg *msg;
573 spin_lock_bh(&tipc_port_list_lock);
574 list_for_each_entry(p_ptr, &ports, port_list) {
576 msg_set_prevnode(msg, tipc_own_addr);
577 msg_set_orignode(msg, tipc_own_addr);
579 spin_unlock_bh(&tipc_port_list_lock);
582 void tipc_acknowledge(u32 ref, u32 ack)
584 struct tipc_port *p_ptr;
585 struct sk_buff *buf = NULL;
587 p_ptr = tipc_port_lock(ref);
590 if (p_ptr->connected) {
591 p_ptr->conn_unacked -= ack;
592 buf = port_build_proto_msg(p_ptr, CONN_ACK, ack);
594 tipc_port_unlock(p_ptr);
595 tipc_net_route_msg(buf);
598 int tipc_publish(struct tipc_port *p_ptr, unsigned int scope,
599 struct tipc_name_seq const *seq)
601 struct publication *publ;
604 if (p_ptr->connected)
606 key = p_ptr->ref + p_ptr->pub_count + 1;
607 if (key == p_ptr->ref)
610 publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper,
611 scope, p_ptr->ref, key);
613 list_add(&publ->pport_list, &p_ptr->publications);
615 p_ptr->published = 1;
621 int tipc_withdraw(struct tipc_port *p_ptr, unsigned int scope,
622 struct tipc_name_seq const *seq)
624 struct publication *publ;
625 struct publication *tpubl;
629 list_for_each_entry_safe(publ, tpubl,
630 &p_ptr->publications, pport_list) {
631 tipc_nametbl_withdraw(publ->type, publ->lower,
632 publ->ref, publ->key);
636 list_for_each_entry_safe(publ, tpubl,
637 &p_ptr->publications, pport_list) {
638 if (publ->scope != scope)
640 if (publ->type != seq->type)
642 if (publ->lower != seq->lower)
644 if (publ->upper != seq->upper)
646 tipc_nametbl_withdraw(publ->type, publ->lower,
647 publ->ref, publ->key);
652 if (list_empty(&p_ptr->publications))
653 p_ptr->published = 0;
657 int tipc_port_connect(u32 ref, struct tipc_portid const *peer)
659 struct tipc_port *p_ptr;
662 p_ptr = tipc_port_lock(ref);
665 res = __tipc_port_connect(ref, p_ptr, peer);
666 tipc_port_unlock(p_ptr);
671 * __tipc_port_connect - connect to a remote peer
673 * Port must be locked.
675 int __tipc_port_connect(u32 ref, struct tipc_port *p_ptr,
676 struct tipc_portid const *peer)
678 struct tipc_msg *msg;
681 if (p_ptr->published || p_ptr->connected)
687 msg_set_destnode(msg, peer->node);
688 msg_set_destport(msg, peer->ref);
689 msg_set_type(msg, TIPC_CONN_MSG);
690 msg_set_lookup_scope(msg, 0);
691 msg_set_hdr_sz(msg, SHORT_H_SIZE);
693 p_ptr->probing_interval = PROBING_INTERVAL;
694 p_ptr->probing_state = CONFIRMED;
695 p_ptr->connected = 1;
696 k_start_timer(&p_ptr->timer, p_ptr->probing_interval);
698 tipc_nodesub_subscribe(&p_ptr->subscription, peer->node,
699 (void *)(unsigned long)ref,
700 (net_ev_handler)port_handle_node_down);
703 p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref);
708 * __tipc_disconnect - disconnect port from peer
710 * Port must be locked.
712 int __tipc_port_disconnect(struct tipc_port *tp_ptr)
714 if (tp_ptr->connected) {
715 tp_ptr->connected = 0;
716 /* let timer expire on it's own to avoid deadlock! */
717 tipc_nodesub_unsubscribe(&tp_ptr->subscription);
725 * tipc_port_disconnect(): Disconnect port form peer.
726 * This is a node local operation.
728 int tipc_port_disconnect(u32 ref)
730 struct tipc_port *p_ptr;
733 p_ptr = tipc_port_lock(ref);
736 res = __tipc_port_disconnect(p_ptr);
737 tipc_port_unlock(p_ptr);
742 * tipc_port_shutdown(): Send a SHUTDOWN msg to peer and disconnect
744 int tipc_port_shutdown(u32 ref)
746 struct tipc_port *p_ptr;
747 struct sk_buff *buf = NULL;
749 p_ptr = tipc_port_lock(ref);
753 buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN);
754 tipc_port_unlock(p_ptr);
755 tipc_net_route_msg(buf);
756 return tipc_port_disconnect(ref);
760 * tipc_port_rcv - receive message from lower layer and deliver to port user
762 int tipc_port_rcv(struct sk_buff *buf)
764 struct tipc_port *p_ptr;
765 struct tipc_msg *msg = buf_msg(buf);
766 u32 destport = msg_destport(msg);
767 u32 dsz = msg_data_sz(msg);
770 /* forward unresolved named message */
771 if (unlikely(!destport)) {
772 tipc_net_route_msg(buf);
776 /* validate destination & pass to port, otherwise reject message */
777 p_ptr = tipc_port_lock(destport);
779 err = tipc_sk_rcv(tipc_port_to_sk(p_ptr), buf);
780 tipc_port_unlock(p_ptr);
784 err = TIPC_ERR_NO_PORT;
787 return tipc_reject_msg(buf, err);
791 * tipc_port_iovec_rcv: Concatenate and deliver sectioned
792 * message for this node.
794 static int tipc_port_iovec_rcv(struct tipc_port *sender,
795 struct iovec const *msg_sect,
801 res = tipc_msg_build(&sender->phdr, msg_sect, len, MAX_MSG_SIZE, &buf);
808 * tipc_send - send message sections on connection
810 int tipc_send(u32 ref, struct iovec const *msg_sect, unsigned int len)
812 struct tipc_port *p_ptr;
816 p_ptr = tipc_port_deref(ref);
817 if (!p_ptr || !p_ptr->connected)
820 p_ptr->congested = 1;
821 if (!tipc_port_congested(p_ptr)) {
822 destnode = tipc_port_peernode(p_ptr);
823 if (likely(!in_own_node(destnode)))
824 res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len,
827 res = tipc_port_iovec_rcv(p_ptr, msg_sect, len);
829 if (likely(res != -ELINKCONG)) {
830 p_ptr->congested = 0;
836 if (tipc_port_unreliable(p_ptr)) {
837 p_ptr->congested = 0;
844 * tipc_send2name - send message sections to port name
846 int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain,
847 struct iovec const *msg_sect, unsigned int len)
849 struct tipc_port *p_ptr;
850 struct tipc_msg *msg;
851 u32 destnode = domain;
855 p_ptr = tipc_port_deref(ref);
856 if (!p_ptr || p_ptr->connected)
860 msg_set_type(msg, TIPC_NAMED_MSG);
861 msg_set_hdr_sz(msg, NAMED_H_SIZE);
862 msg_set_nametype(msg, name->type);
863 msg_set_nameinst(msg, name->instance);
864 msg_set_lookup_scope(msg, tipc_addr_scope(domain));
865 destport = tipc_nametbl_translate(name->type, name->instance, &destnode);
866 msg_set_destnode(msg, destnode);
867 msg_set_destport(msg, destport);
869 if (likely(destport || destnode)) {
870 if (likely(in_own_node(destnode)))
871 res = tipc_port_iovec_rcv(p_ptr, msg_sect, len);
872 else if (tipc_own_addr)
873 res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len,
876 res = tipc_port_iovec_reject(p_ptr, msg, msg_sect,
877 len, TIPC_ERR_NO_NODE);
878 if (likely(res != -ELINKCONG)) {
883 if (tipc_port_unreliable(p_ptr))
888 return tipc_port_iovec_reject(p_ptr, msg, msg_sect, len,
893 * tipc_send2port - send message sections to port identity
895 int tipc_send2port(u32 ref, struct tipc_portid const *dest,
896 struct iovec const *msg_sect, unsigned int len)
898 struct tipc_port *p_ptr;
899 struct tipc_msg *msg;
902 p_ptr = tipc_port_deref(ref);
903 if (!p_ptr || p_ptr->connected)
907 msg_set_type(msg, TIPC_DIRECT_MSG);
908 msg_set_lookup_scope(msg, 0);
909 msg_set_destnode(msg, dest->node);
910 msg_set_destport(msg, dest->ref);
911 msg_set_hdr_sz(msg, BASIC_H_SIZE);
913 if (in_own_node(dest->node))
914 res = tipc_port_iovec_rcv(p_ptr, msg_sect, len);
915 else if (tipc_own_addr)
916 res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len,
919 res = tipc_port_iovec_reject(p_ptr, msg, msg_sect, len,
921 if (likely(res != -ELINKCONG)) {
926 if (tipc_port_unreliable(p_ptr))