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Commit | Line | Data |
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b97bf3fd PL |
1 | /* |
2 | * net/tipc/port.c: TIPC port code | |
c4307285 | 3 | * |
05646c91 | 4 | * Copyright (c) 1992-2007, Ericsson AB |
0ea52241 | 5 | * Copyright (c) 2004-2008, Wind River Systems |
b97bf3fd PL |
6 | * All rights reserved. |
7 | * | |
9ea1fd3c | 8 | * Redistribution and use in source and binary forms, with or without |
b97bf3fd PL |
9 | * modification, are permitted provided that the following conditions are met: |
10 | * | |
9ea1fd3c PL |
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. | |
b97bf3fd | 19 | * |
9ea1fd3c PL |
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. | |
23 | * | |
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 | |
b97bf3fd PL |
34 | * POSSIBILITY OF SUCH DAMAGE. |
35 | */ | |
36 | ||
37 | #include "core.h" | |
38 | #include "config.h" | |
39 | #include "dbg.h" | |
40 | #include "port.h" | |
41 | #include "addr.h" | |
42 | #include "link.h" | |
43 | #include "node.h" | |
b97bf3fd PL |
44 | #include "name_table.h" |
45 | #include "user_reg.h" | |
46 | #include "msg.h" | |
47 | #include "bcast.h" | |
48 | ||
49 | /* Connection management: */ | |
50 | #define PROBING_INTERVAL 3600000 /* [ms] => 1 h */ | |
51 | #define CONFIRMED 0 | |
52 | #define PROBING 1 | |
53 | ||
54 | #define MAX_REJECT_SIZE 1024 | |
55 | ||
1fc54d8f SR |
56 | static struct sk_buff *msg_queue_head = NULL; |
57 | static struct sk_buff *msg_queue_tail = NULL; | |
b97bf3fd | 58 | |
34af946a IM |
59 | DEFINE_SPINLOCK(tipc_port_list_lock); |
60 | static DEFINE_SPINLOCK(queue_lock); | |
b97bf3fd | 61 | |
4323add6 | 62 | static LIST_HEAD(ports); |
b97bf3fd PL |
63 | static void port_handle_node_down(unsigned long ref); |
64 | static struct sk_buff* port_build_self_abort_msg(struct port *,u32 err); | |
65 | static struct sk_buff* port_build_peer_abort_msg(struct port *,u32 err); | |
66 | static void port_timeout(unsigned long ref); | |
67 | ||
68 | ||
05790c64 | 69 | static u32 port_peernode(struct port *p_ptr) |
b97bf3fd PL |
70 | { |
71 | return msg_destnode(&p_ptr->publ.phdr); | |
72 | } | |
73 | ||
05790c64 | 74 | static u32 port_peerport(struct port *p_ptr) |
b97bf3fd PL |
75 | { |
76 | return msg_destport(&p_ptr->publ.phdr); | |
77 | } | |
78 | ||
05790c64 | 79 | static u32 port_out_seqno(struct port *p_ptr) |
b97bf3fd PL |
80 | { |
81 | return msg_transp_seqno(&p_ptr->publ.phdr); | |
82 | } | |
83 | ||
05790c64 | 84 | static void port_incr_out_seqno(struct port *p_ptr) |
b97bf3fd PL |
85 | { |
86 | struct tipc_msg *m = &p_ptr->publ.phdr; | |
87 | ||
88 | if (likely(!msg_routed(m))) | |
89 | return; | |
90 | msg_set_transp_seqno(m, (msg_transp_seqno(m) + 1)); | |
91 | } | |
92 | ||
93 | /** | |
94 | * tipc_multicast - send a multicast message to local and remote destinations | |
95 | */ | |
96 | ||
97 | int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, u32 domain, | |
98 | u32 num_sect, struct iovec const *msg_sect) | |
99 | { | |
100 | struct tipc_msg *hdr; | |
101 | struct sk_buff *buf; | |
102 | struct sk_buff *ibuf = NULL; | |
103 | struct port_list dports = {0, NULL, }; | |
4323add6 | 104 | struct port *oport = tipc_port_deref(ref); |
b97bf3fd PL |
105 | int ext_targets; |
106 | int res; | |
107 | ||
108 | if (unlikely(!oport)) | |
109 | return -EINVAL; | |
110 | ||
111 | /* Create multicast message */ | |
112 | ||
113 | hdr = &oport->publ.phdr; | |
114 | msg_set_type(hdr, TIPC_MCAST_MSG); | |
115 | msg_set_nametype(hdr, seq->type); | |
116 | msg_set_namelower(hdr, seq->lower); | |
117 | msg_set_nameupper(hdr, seq->upper); | |
118 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | |
c68ca7b7 | 119 | res = tipc_msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
120 | !oport->user_port, &buf); |
121 | if (unlikely(!buf)) | |
122 | return res; | |
123 | ||
124 | /* Figure out where to send multicast message */ | |
125 | ||
4323add6 PL |
126 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
127 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
128 | |
129 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
130 | |
131 | if (ext_targets) { | |
132 | if (dports.count != 0) { | |
133 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
134 | if (ibuf == NULL) { | |
4323add6 | 135 | tipc_port_list_free(&dports); |
b97bf3fd PL |
136 | buf_discard(buf); |
137 | return -ENOMEM; | |
138 | } | |
139 | } | |
4323add6 | 140 | res = tipc_bclink_send_msg(buf); |
b97bf3fd PL |
141 | if ((res < 0) && (dports.count != 0)) { |
142 | buf_discard(ibuf); | |
143 | } | |
144 | } else { | |
145 | ibuf = buf; | |
146 | } | |
147 | ||
148 | if (res >= 0) { | |
149 | if (ibuf) | |
4323add6 | 150 | tipc_port_recv_mcast(ibuf, &dports); |
b97bf3fd | 151 | } else { |
4323add6 | 152 | tipc_port_list_free(&dports); |
b97bf3fd PL |
153 | } |
154 | return res; | |
155 | } | |
156 | ||
157 | /** | |
4323add6 | 158 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
c4307285 | 159 | * |
b97bf3fd PL |
160 | * If there is no port list, perform a lookup to create one |
161 | */ | |
162 | ||
4323add6 | 163 | void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp) |
b97bf3fd PL |
164 | { |
165 | struct tipc_msg* msg; | |
166 | struct port_list dports = {0, NULL, }; | |
167 | struct port_list *item = dp; | |
168 | int cnt = 0; | |
169 | ||
b97bf3fd PL |
170 | msg = buf_msg(buf); |
171 | ||
172 | /* Create destination port list, if one wasn't supplied */ | |
173 | ||
174 | if (dp == NULL) { | |
4323add6 | 175 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
176 | msg_namelower(msg), |
177 | msg_nameupper(msg), | |
178 | TIPC_CLUSTER_SCOPE, | |
179 | &dports); | |
180 | item = dp = &dports; | |
181 | } | |
182 | ||
183 | /* Deliver a copy of message to each destination port */ | |
184 | ||
185 | if (dp->count != 0) { | |
186 | if (dp->count == 1) { | |
187 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
188 | tipc_port_recv_msg(buf); |
189 | tipc_port_list_free(dp); | |
b97bf3fd PL |
190 | return; |
191 | } | |
192 | for (; cnt < dp->count; cnt++) { | |
193 | int index = cnt % PLSIZE; | |
194 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
195 | ||
196 | if (b == NULL) { | |
a10bd924 | 197 | warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
198 | msg_dbg(msg, "LOST:"); |
199 | goto exit; | |
200 | } | |
201 | if ((index == 0) && (cnt != 0)) { | |
202 | item = item->next; | |
203 | } | |
204 | msg_set_destport(buf_msg(b),item->ports[index]); | |
4323add6 | 205 | tipc_port_recv_msg(b); |
b97bf3fd PL |
206 | } |
207 | } | |
208 | exit: | |
209 | buf_discard(buf); | |
4323add6 | 210 | tipc_port_list_free(dp); |
b97bf3fd PL |
211 | } |
212 | ||
213 | /** | |
7ef43eba | 214 | * tipc_createport_raw - create a generic TIPC port |
c4307285 | 215 | * |
0ea52241 | 216 | * Returns pointer to (locked) TIPC port, or NULL if unable to create it |
b97bf3fd PL |
217 | */ |
218 | ||
0ea52241 | 219 | struct tipc_port *tipc_createport_raw(void *usr_handle, |
b97bf3fd PL |
220 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), |
221 | void (*wakeup)(struct tipc_port *), | |
0ea52241 | 222 | const u32 importance) |
b97bf3fd PL |
223 | { |
224 | struct port *p_ptr; | |
225 | struct tipc_msg *msg; | |
226 | u32 ref; | |
227 | ||
0da974f4 | 228 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 AS |
229 | if (!p_ptr) { |
230 | warn("Port creation failed, no memory\n"); | |
0ea52241 | 231 | return NULL; |
b97bf3fd | 232 | } |
4323add6 | 233 | ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock); |
b97bf3fd | 234 | if (!ref) { |
a10bd924 | 235 | warn("Port creation failed, reference table exhausted\n"); |
b97bf3fd | 236 | kfree(p_ptr); |
0ea52241 | 237 | return NULL; |
b97bf3fd PL |
238 | } |
239 | ||
05646c91 AS |
240 | p_ptr->publ.usr_handle = usr_handle; |
241 | p_ptr->publ.max_pkt = MAX_PKT_DEFAULT; | |
b97bf3fd PL |
242 | p_ptr->publ.ref = ref; |
243 | msg = &p_ptr->publ.phdr; | |
c68ca7b7 | 244 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, LONG_H_SIZE, 0); |
b97bf3fd | 245 | msg_set_origport(msg, ref); |
b97bf3fd PL |
246 | p_ptr->last_in_seqno = 41; |
247 | p_ptr->sent = 1; | |
b97bf3fd PL |
248 | INIT_LIST_HEAD(&p_ptr->wait_list); |
249 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd PL |
250 | p_ptr->dispatcher = dispatcher; |
251 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 252 | p_ptr->user_port = NULL; |
b97bf3fd | 253 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 254 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
255 | INIT_LIST_HEAD(&p_ptr->publications); |
256 | INIT_LIST_HEAD(&p_ptr->port_list); | |
257 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 | 258 | spin_unlock_bh(&tipc_port_list_lock); |
0ea52241 | 259 | return &(p_ptr->publ); |
b97bf3fd PL |
260 | } |
261 | ||
262 | int tipc_deleteport(u32 ref) | |
263 | { | |
264 | struct port *p_ptr; | |
1fc54d8f | 265 | struct sk_buff *buf = NULL; |
b97bf3fd | 266 | |
1fc54d8f | 267 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 268 | p_ptr = tipc_port_lock(ref); |
c4307285 | 269 | if (!p_ptr) |
b97bf3fd PL |
270 | return -EINVAL; |
271 | ||
4323add6 PL |
272 | tipc_ref_discard(ref); |
273 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
274 | |
275 | k_cancel_timer(&p_ptr->timer); | |
276 | if (p_ptr->publ.connected) { | |
277 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
4323add6 | 278 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
279 | } |
280 | if (p_ptr->user_port) { | |
4323add6 | 281 | tipc_reg_remove_port(p_ptr->user_port); |
b97bf3fd PL |
282 | kfree(p_ptr->user_port); |
283 | } | |
284 | ||
4323add6 | 285 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
286 | list_del(&p_ptr->port_list); |
287 | list_del(&p_ptr->wait_list); | |
4323add6 | 288 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
289 | k_term_timer(&p_ptr->timer); |
290 | kfree(p_ptr); | |
291 | dbg("Deleted port %u\n", ref); | |
4323add6 | 292 | tipc_net_route_msg(buf); |
0e35fd5e | 293 | return 0; |
b97bf3fd PL |
294 | } |
295 | ||
05790c64 | 296 | static int port_unreliable(struct port *p_ptr) |
b97bf3fd PL |
297 | { |
298 | return msg_src_droppable(&p_ptr->publ.phdr); | |
299 | } | |
300 | ||
301 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
302 | { | |
303 | struct port *p_ptr; | |
c4307285 | 304 | |
4323add6 | 305 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
306 | if (!p_ptr) |
307 | return -EINVAL; | |
308 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 309 | tipc_port_unlock(p_ptr); |
0e35fd5e | 310 | return 0; |
b97bf3fd PL |
311 | } |
312 | ||
313 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
314 | { | |
315 | struct port *p_ptr; | |
c4307285 | 316 | |
4323add6 | 317 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
318 | if (!p_ptr) |
319 | return -EINVAL; | |
320 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | |
4323add6 | 321 | tipc_port_unlock(p_ptr); |
0e35fd5e | 322 | return 0; |
b97bf3fd PL |
323 | } |
324 | ||
05790c64 | 325 | static int port_unreturnable(struct port *p_ptr) |
b97bf3fd PL |
326 | { |
327 | return msg_dest_droppable(&p_ptr->publ.phdr); | |
328 | } | |
329 | ||
330 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
331 | { | |
332 | struct port *p_ptr; | |
c4307285 | 333 | |
4323add6 | 334 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
335 | if (!p_ptr) |
336 | return -EINVAL; | |
337 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 338 | tipc_port_unlock(p_ptr); |
0e35fd5e | 339 | return 0; |
b97bf3fd PL |
340 | } |
341 | ||
342 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
343 | { | |
344 | struct port *p_ptr; | |
c4307285 | 345 | |
4323add6 | 346 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
347 | if (!p_ptr) |
348 | return -EINVAL; | |
349 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | |
4323add6 | 350 | tipc_port_unlock(p_ptr); |
0e35fd5e | 351 | return 0; |
b97bf3fd PL |
352 | } |
353 | ||
c4307285 YH |
354 | /* |
355 | * port_build_proto_msg(): build a port level protocol | |
356 | * or a connection abortion message. Called with | |
b97bf3fd PL |
357 | * tipc_port lock on. |
358 | */ | |
359 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
360 | u32 origport, u32 orignode, | |
c4307285 | 361 | u32 usr, u32 type, u32 err, |
b97bf3fd PL |
362 | u32 seqno, u32 ack) |
363 | { | |
364 | struct sk_buff *buf; | |
365 | struct tipc_msg *msg; | |
c4307285 | 366 | |
31e3c3f6 | 367 | buf = tipc_buf_acquire(LONG_H_SIZE); |
b97bf3fd PL |
368 | if (buf) { |
369 | msg = buf_msg(buf); | |
c68ca7b7 | 370 | tipc_msg_init(msg, usr, type, LONG_H_SIZE, destnode); |
75715217 | 371 | msg_set_errcode(msg, err); |
b97bf3fd PL |
372 | msg_set_destport(msg, destport); |
373 | msg_set_origport(msg, origport); | |
b97bf3fd PL |
374 | msg_set_orignode(msg, orignode); |
375 | msg_set_transp_seqno(msg, seqno); | |
376 | msg_set_msgcnt(msg, ack); | |
377 | msg_dbg(msg, "PORT>SEND>:"); | |
378 | } | |
379 | return buf; | |
380 | } | |
381 | ||
b97bf3fd PL |
382 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
383 | { | |
384 | struct tipc_msg *msg = buf_msg(buf); | |
385 | struct sk_buff *rbuf; | |
386 | struct tipc_msg *rmsg; | |
387 | int hdr_sz; | |
388 | u32 imp = msg_importance(msg); | |
389 | u32 data_sz = msg_data_sz(msg); | |
390 | ||
391 | if (data_sz > MAX_REJECT_SIZE) | |
392 | data_sz = MAX_REJECT_SIZE; | |
393 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
394 | imp++; | |
395 | msg_dbg(msg, "port->rej: "); | |
396 | ||
397 | /* discard rejected message if it shouldn't be returned to sender */ | |
398 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
399 | buf_discard(buf); | |
400 | return data_sz; | |
401 | } | |
402 | ||
403 | /* construct rejected message */ | |
404 | if (msg_mcast(msg)) | |
405 | hdr_sz = MCAST_H_SIZE; | |
406 | else | |
407 | hdr_sz = LONG_H_SIZE; | |
31e3c3f6 | 408 | rbuf = tipc_buf_acquire(data_sz + hdr_sz); |
b97bf3fd PL |
409 | if (rbuf == NULL) { |
410 | buf_discard(buf); | |
411 | return data_sz; | |
412 | } | |
413 | rmsg = buf_msg(rbuf); | |
c68ca7b7 | 414 | tipc_msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg)); |
75715217 | 415 | msg_set_errcode(rmsg, err); |
b97bf3fd | 416 | msg_set_destport(rmsg, msg_origport(msg)); |
b97bf3fd | 417 | msg_set_origport(rmsg, msg_destport(msg)); |
99c14593 | 418 | if (msg_short(msg)) { |
b97bf3fd | 419 | msg_set_orignode(rmsg, tipc_own_addr); |
99c14593 AS |
420 | /* leave name type & instance as zeroes */ |
421 | } else { | |
b97bf3fd | 422 | msg_set_orignode(rmsg, msg_destnode(msg)); |
99c14593 AS |
423 | msg_set_nametype(rmsg, msg_nametype(msg)); |
424 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
425 | } | |
c4307285 | 426 | msg_set_size(rmsg, data_sz + hdr_sz); |
27d7ff46 | 427 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
428 | |
429 | /* send self-abort message when rejecting on a connected port */ | |
430 | if (msg_connected(msg)) { | |
1fc54d8f | 431 | struct sk_buff *abuf = NULL; |
4323add6 | 432 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
433 | |
434 | if (p_ptr) { | |
435 | if (p_ptr->publ.connected) | |
436 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 437 | tipc_port_unlock(p_ptr); |
b97bf3fd | 438 | } |
4323add6 | 439 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
440 | } |
441 | ||
442 | /* send rejected message */ | |
443 | buf_discard(buf); | |
4323add6 | 444 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
445 | return data_sz; |
446 | } | |
447 | ||
4323add6 PL |
448 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
449 | struct iovec const *msg_sect, u32 num_sect, | |
450 | int err) | |
b97bf3fd PL |
451 | { |
452 | struct sk_buff *buf; | |
453 | int res; | |
454 | ||
c68ca7b7 | 455 | res = tipc_msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
456 | !p_ptr->user_port, &buf); |
457 | if (!buf) | |
458 | return res; | |
459 | ||
460 | return tipc_reject_msg(buf, err); | |
461 | } | |
462 | ||
463 | static void port_timeout(unsigned long ref) | |
464 | { | |
4323add6 | 465 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 466 | struct sk_buff *buf = NULL; |
b97bf3fd | 467 | |
065fd177 AS |
468 | if (!p_ptr) |
469 | return; | |
470 | ||
471 | if (!p_ptr->publ.connected) { | |
472 | tipc_port_unlock(p_ptr); | |
b97bf3fd | 473 | return; |
065fd177 | 474 | } |
b97bf3fd PL |
475 | |
476 | /* Last probe answered ? */ | |
477 | if (p_ptr->probing_state == PROBING) { | |
478 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
479 | } else { | |
480 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
481 | port_peernode(p_ptr), | |
482 | p_ptr->publ.ref, | |
483 | tipc_own_addr, | |
484 | CONN_MANAGER, | |
485 | CONN_PROBE, | |
c4307285 | 486 | TIPC_OK, |
b97bf3fd PL |
487 | port_out_seqno(p_ptr), |
488 | 0); | |
489 | port_incr_out_seqno(p_ptr); | |
490 | p_ptr->probing_state = PROBING; | |
491 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
492 | } | |
4323add6 PL |
493 | tipc_port_unlock(p_ptr); |
494 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
495 | } |
496 | ||
497 | ||
498 | static void port_handle_node_down(unsigned long ref) | |
499 | { | |
4323add6 | 500 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 501 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
502 | |
503 | if (!p_ptr) | |
504 | return; | |
505 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
506 | tipc_port_unlock(p_ptr); |
507 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
508 | } |
509 | ||
510 | ||
511 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
512 | { | |
513 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
514 | ||
515 | if (!p_ptr->publ.connected) | |
1fc54d8f | 516 | return NULL; |
b97bf3fd PL |
517 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
518 | imp++; | |
519 | return port_build_proto_msg(p_ptr->publ.ref, | |
520 | tipc_own_addr, | |
521 | port_peerport(p_ptr), | |
522 | port_peernode(p_ptr), | |
523 | imp, | |
524 | TIPC_CONN_MSG, | |
c4307285 | 525 | err, |
b97bf3fd PL |
526 | p_ptr->last_in_seqno + 1, |
527 | 0); | |
528 | } | |
529 | ||
530 | ||
531 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
532 | { | |
533 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
534 | ||
535 | if (!p_ptr->publ.connected) | |
1fc54d8f | 536 | return NULL; |
b97bf3fd PL |
537 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
538 | imp++; | |
539 | return port_build_proto_msg(port_peerport(p_ptr), | |
540 | port_peernode(p_ptr), | |
541 | p_ptr->publ.ref, | |
542 | tipc_own_addr, | |
543 | imp, | |
544 | TIPC_CONN_MSG, | |
c4307285 | 545 | err, |
b97bf3fd PL |
546 | port_out_seqno(p_ptr), |
547 | 0); | |
548 | } | |
549 | ||
4323add6 | 550 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
551 | { |
552 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 553 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 554 | u32 err = TIPC_OK; |
1fc54d8f SR |
555 | struct sk_buff *r_buf = NULL; |
556 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd PL |
557 | |
558 | msg_dbg(msg, "PORT<RECV<:"); | |
559 | ||
560 | if (!p_ptr) { | |
561 | err = TIPC_ERR_NO_PORT; | |
562 | } else if (p_ptr->publ.connected) { | |
96d841b7 AS |
563 | if ((port_peernode(p_ptr) != msg_orignode(msg)) || |
564 | (port_peerport(p_ptr) != msg_origport(msg))) { | |
b97bf3fd | 565 | err = TIPC_ERR_NO_PORT; |
96d841b7 | 566 | } else if (msg_type(msg) == CONN_ACK) { |
c4307285 | 567 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
568 | p_ptr->publ.congested && |
569 | p_ptr->wakeup; | |
570 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 571 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
572 | goto exit; |
573 | p_ptr->publ.congested = 0; | |
574 | if (!wakeup) | |
575 | goto exit; | |
576 | p_ptr->wakeup(&p_ptr->publ); | |
577 | goto exit; | |
578 | } | |
579 | } else if (p_ptr->publ.published) { | |
580 | err = TIPC_ERR_NO_PORT; | |
581 | } | |
582 | if (err) { | |
583 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
584 | msg_orignode(msg), |
585 | msg_destport(msg), | |
b97bf3fd | 586 | tipc_own_addr, |
06d82c91 | 587 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
588 | TIPC_CONN_MSG, |
589 | err, | |
590 | 0, | |
591 | 0); | |
592 | goto exit; | |
593 | } | |
594 | ||
595 | /* All is fine */ | |
596 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
597 | r_buf = port_build_proto_msg(msg_origport(msg), |
598 | msg_orignode(msg), | |
599 | msg_destport(msg), | |
600 | tipc_own_addr, | |
b97bf3fd PL |
601 | CONN_MANAGER, |
602 | CONN_PROBE_REPLY, | |
603 | TIPC_OK, | |
604 | port_out_seqno(p_ptr), | |
605 | 0); | |
606 | } | |
607 | p_ptr->probing_state = CONFIRMED; | |
608 | port_incr_out_seqno(p_ptr); | |
609 | exit: | |
610 | if (p_ptr) | |
4323add6 PL |
611 | tipc_port_unlock(p_ptr); |
612 | tipc_net_route_msg(r_buf); | |
613 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
614 | buf_discard(buf); |
615 | } | |
616 | ||
617 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
618 | { | |
c4307285 | 619 | struct publication *publ; |
b97bf3fd PL |
620 | |
621 | if (full_id) | |
c4307285 | 622 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 623 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
c4307285 | 624 | tipc_node(tipc_own_addr), p_ptr->publ.ref); |
b97bf3fd PL |
625 | else |
626 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
627 | ||
c4307285 YH |
628 | if (p_ptr->publ.connected) { |
629 | u32 dport = port_peerport(p_ptr); | |
630 | u32 destnode = port_peernode(p_ptr); | |
631 | ||
632 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
633 | tipc_zone(destnode), tipc_cluster(destnode), | |
634 | tipc_node(destnode), dport); | |
635 | if (p_ptr->publ.conn_type != 0) | |
636 | tipc_printf(buf, " via {%u,%u}", | |
637 | p_ptr->publ.conn_type, | |
638 | p_ptr->publ.conn_instance); | |
639 | } | |
640 | else if (p_ptr->publ.published) { | |
641 | tipc_printf(buf, " bound to"); | |
642 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
643 | if (publ->lower == publ->upper) |
644 | tipc_printf(buf, " {%u,%u}", publ->type, | |
645 | publ->lower); | |
646 | else | |
c4307285 | 647 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 648 | publ->lower, publ->upper); |
c4307285 YH |
649 | } |
650 | } | |
651 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
652 | } |
653 | ||
654 | #define MAX_PORT_QUERY 32768 | |
655 | ||
4323add6 | 656 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
657 | { |
658 | struct sk_buff *buf; | |
659 | struct tlv_desc *rep_tlv; | |
660 | struct print_buf pb; | |
661 | struct port *p_ptr; | |
662 | int str_len; | |
663 | ||
4323add6 | 664 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
665 | if (!buf) |
666 | return NULL; | |
667 | rep_tlv = (struct tlv_desc *)buf->data; | |
668 | ||
4323add6 PL |
669 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
670 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
671 | list_for_each_entry(p_ptr, &ports, port_list) { |
672 | spin_lock_bh(p_ptr->publ.lock); | |
673 | port_print(p_ptr, &pb, 0); | |
674 | spin_unlock_bh(p_ptr->publ.lock); | |
675 | } | |
4323add6 PL |
676 | spin_unlock_bh(&tipc_port_list_lock); |
677 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
678 | |
679 | skb_put(buf, TLV_SPACE(str_len)); | |
680 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
681 | ||
682 | return buf; | |
683 | } | |
684 | ||
4323add6 | 685 | void tipc_port_reinit(void) |
b97bf3fd PL |
686 | { |
687 | struct port *p_ptr; | |
688 | struct tipc_msg *msg; | |
689 | ||
4323add6 | 690 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
691 | list_for_each_entry(p_ptr, &ports, port_list) { |
692 | msg = &p_ptr->publ.phdr; | |
693 | if (msg_orignode(msg) == tipc_own_addr) | |
694 | break; | |
6d4a6672 | 695 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
696 | msg_set_orignode(msg, tipc_own_addr); |
697 | } | |
4323add6 | 698 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
699 | } |
700 | ||
701 | ||
702 | /* | |
703 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
704 | * to the tipc_port interface. | |
705 | */ | |
706 | ||
707 | static void port_dispatcher_sigh(void *dummy) | |
708 | { | |
709 | struct sk_buff *buf; | |
710 | ||
711 | spin_lock_bh(&queue_lock); | |
712 | buf = msg_queue_head; | |
1fc54d8f | 713 | msg_queue_head = NULL; |
b97bf3fd PL |
714 | spin_unlock_bh(&queue_lock); |
715 | ||
716 | while (buf) { | |
717 | struct port *p_ptr; | |
718 | struct user_port *up_ptr; | |
719 | struct tipc_portid orig; | |
720 | struct tipc_name_seq dseq; | |
721 | void *usr_handle; | |
722 | int connected; | |
723 | int published; | |
9688243b | 724 | u32 message_type; |
b97bf3fd PL |
725 | |
726 | struct sk_buff *next = buf->next; | |
727 | struct tipc_msg *msg = buf_msg(buf); | |
728 | u32 dref = msg_destport(msg); | |
c4307285 | 729 | |
9688243b AS |
730 | message_type = msg_type(msg); |
731 | if (message_type > TIPC_DIRECT_MSG) | |
732 | goto reject; /* Unsupported message type */ | |
733 | ||
4323add6 | 734 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
735 | if (!p_ptr) |
736 | goto reject; /* Port deleted while msg in queue */ | |
737 | ||
b97bf3fd PL |
738 | orig.ref = msg_origport(msg); |
739 | orig.node = msg_orignode(msg); | |
740 | up_ptr = p_ptr->user_port; | |
741 | usr_handle = up_ptr->usr_handle; | |
742 | connected = p_ptr->publ.connected; | |
743 | published = p_ptr->publ.published; | |
744 | ||
745 | if (unlikely(msg_errcode(msg))) | |
746 | goto err; | |
747 | ||
9688243b | 748 | switch (message_type) { |
c4307285 | 749 | |
b97bf3fd PL |
750 | case TIPC_CONN_MSG:{ |
751 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
752 | u32 peer_port = port_peerport(p_ptr); | |
753 | u32 peer_node = port_peernode(p_ptr); | |
754 | ||
4cec72c8 | 755 | tipc_port_unlock(p_ptr); |
5307e469 AS |
756 | if (unlikely(!cb)) |
757 | goto reject; | |
b97bf3fd | 758 | if (unlikely(!connected)) { |
84b07c16 | 759 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 760 | goto reject; |
84b07c16 AS |
761 | } else if ((msg_origport(msg) != peer_port) || |
762 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 763 | goto reject; |
c4307285 | 764 | if (unlikely(++p_ptr->publ.conn_unacked >= |
b97bf3fd | 765 | TIPC_FLOW_CONTROL_WIN)) |
c4307285 | 766 | tipc_acknowledge(dref, |
b97bf3fd PL |
767 | p_ptr->publ.conn_unacked); |
768 | skb_pull(buf, msg_hdr_sz(msg)); | |
769 | cb(usr_handle, dref, &buf, msg_data(msg), | |
770 | msg_data_sz(msg)); | |
771 | break; | |
772 | } | |
773 | case TIPC_DIRECT_MSG:{ | |
774 | tipc_msg_event cb = up_ptr->msg_cb; | |
775 | ||
4cec72c8 | 776 | tipc_port_unlock(p_ptr); |
5307e469 | 777 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
778 | goto reject; |
779 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 780 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
781 | msg_data_sz(msg), msg_importance(msg), |
782 | &orig); | |
783 | break; | |
784 | } | |
9688243b | 785 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
786 | case TIPC_NAMED_MSG:{ |
787 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
788 | ||
4cec72c8 | 789 | tipc_port_unlock(p_ptr); |
5307e469 | 790 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
791 | goto reject; |
792 | dseq.type = msg_nametype(msg); | |
793 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
794 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
795 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 796 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 797 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
798 | msg_data_sz(msg), msg_importance(msg), |
799 | &orig, &dseq); | |
800 | break; | |
801 | } | |
802 | } | |
803 | if (buf) | |
804 | buf_discard(buf); | |
805 | buf = next; | |
806 | continue; | |
807 | err: | |
9688243b | 808 | switch (message_type) { |
c4307285 | 809 | |
b97bf3fd | 810 | case TIPC_CONN_MSG:{ |
c4307285 | 811 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
812 | up_ptr->conn_err_cb; |
813 | u32 peer_port = port_peerport(p_ptr); | |
814 | u32 peer_node = port_peernode(p_ptr); | |
815 | ||
4cec72c8 | 816 | tipc_port_unlock(p_ptr); |
5307e469 | 817 | if (!cb || !connected) |
b97bf3fd | 818 | break; |
5307e469 AS |
819 | if ((msg_origport(msg) != peer_port) || |
820 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
821 | break; |
822 | tipc_disconnect(dref); | |
823 | skb_pull(buf, msg_hdr_sz(msg)); | |
824 | cb(usr_handle, dref, &buf, msg_data(msg), | |
825 | msg_data_sz(msg), msg_errcode(msg)); | |
826 | break; | |
827 | } | |
828 | case TIPC_DIRECT_MSG:{ | |
829 | tipc_msg_err_event cb = up_ptr->err_cb; | |
830 | ||
4cec72c8 | 831 | tipc_port_unlock(p_ptr); |
5307e469 | 832 | if (!cb || connected) |
b97bf3fd PL |
833 | break; |
834 | skb_pull(buf, msg_hdr_sz(msg)); | |
835 | cb(usr_handle, dref, &buf, msg_data(msg), | |
836 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
837 | break; | |
838 | } | |
9688243b | 839 | case TIPC_MCAST_MSG: |
b97bf3fd | 840 | case TIPC_NAMED_MSG:{ |
c4307285 | 841 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
842 | up_ptr->named_err_cb; |
843 | ||
4cec72c8 | 844 | tipc_port_unlock(p_ptr); |
5307e469 | 845 | if (!cb || connected) |
b97bf3fd PL |
846 | break; |
847 | dseq.type = msg_nametype(msg); | |
848 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
849 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
850 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 851 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 852 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
853 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
854 | break; | |
855 | } | |
856 | } | |
857 | if (buf) | |
858 | buf_discard(buf); | |
859 | buf = next; | |
860 | continue; | |
861 | reject: | |
862 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
863 | buf = next; | |
864 | } | |
865 | } | |
866 | ||
867 | /* | |
868 | * port_dispatcher(): Dispatcher for messages destinated | |
869 | * to the tipc_port interface. Called with port locked. | |
870 | */ | |
871 | ||
872 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
873 | { | |
874 | buf->next = NULL; | |
875 | spin_lock_bh(&queue_lock); | |
876 | if (msg_queue_head) { | |
877 | msg_queue_tail->next = buf; | |
878 | msg_queue_tail = buf; | |
879 | } else { | |
880 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 881 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
882 | } |
883 | spin_unlock_bh(&queue_lock); | |
0e35fd5e | 884 | return 0; |
b97bf3fd PL |
885 | } |
886 | ||
c4307285 | 887 | /* |
b97bf3fd | 888 | * Wake up port after congestion: Called with port locked, |
c4307285 | 889 | * |
b97bf3fd PL |
890 | */ |
891 | ||
892 | static void port_wakeup_sh(unsigned long ref) | |
893 | { | |
894 | struct port *p_ptr; | |
895 | struct user_port *up_ptr; | |
1fc54d8f SR |
896 | tipc_continue_event cb = NULL; |
897 | void *uh = NULL; | |
b97bf3fd | 898 | |
4323add6 | 899 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
900 | if (p_ptr) { |
901 | up_ptr = p_ptr->user_port; | |
902 | if (up_ptr) { | |
903 | cb = up_ptr->continue_event_cb; | |
904 | uh = up_ptr->usr_handle; | |
905 | } | |
4323add6 | 906 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
907 | } |
908 | if (cb) | |
909 | cb(uh, ref); | |
910 | } | |
911 | ||
912 | ||
913 | static void port_wakeup(struct tipc_port *p_ptr) | |
914 | { | |
4323add6 | 915 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
916 | } |
917 | ||
918 | void tipc_acknowledge(u32 ref, u32 ack) | |
919 | { | |
920 | struct port *p_ptr; | |
1fc54d8f | 921 | struct sk_buff *buf = NULL; |
b97bf3fd | 922 | |
4323add6 | 923 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
924 | if (!p_ptr) |
925 | return; | |
926 | if (p_ptr->publ.connected) { | |
927 | p_ptr->publ.conn_unacked -= ack; | |
928 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
929 | port_peernode(p_ptr), | |
930 | ref, | |
931 | tipc_own_addr, | |
932 | CONN_MANAGER, | |
933 | CONN_ACK, | |
c4307285 | 934 | TIPC_OK, |
b97bf3fd PL |
935 | port_out_seqno(p_ptr), |
936 | ack); | |
937 | } | |
4323add6 PL |
938 | tipc_port_unlock(p_ptr); |
939 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
940 | } |
941 | ||
942 | /* | |
943 | * tipc_createport(): user level call. Will add port to | |
944 | * registry if non-zero user_ref. | |
945 | */ | |
946 | ||
c4307285 YH |
947 | int tipc_createport(u32 user_ref, |
948 | void *usr_handle, | |
949 | unsigned int importance, | |
950 | tipc_msg_err_event error_cb, | |
951 | tipc_named_msg_err_event named_error_cb, | |
952 | tipc_conn_shutdown_event conn_error_cb, | |
953 | tipc_msg_event msg_cb, | |
954 | tipc_named_msg_event named_msg_cb, | |
955 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
956 | tipc_continue_event continue_event_cb,/* May be zero */ |
957 | u32 *portref) | |
958 | { | |
959 | struct user_port *up_ptr; | |
c4307285 | 960 | struct port *p_ptr; |
b97bf3fd | 961 | |
0da974f4 | 962 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 963 | if (!up_ptr) { |
a75bf874 | 964 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
965 | return -ENOMEM; |
966 | } | |
0ea52241 AS |
967 | p_ptr = (struct port *)tipc_createport_raw(NULL, port_dispatcher, |
968 | port_wakeup, importance); | |
969 | if (!p_ptr) { | |
b97bf3fd PL |
970 | kfree(up_ptr); |
971 | return -ENOMEM; | |
972 | } | |
973 | ||
974 | p_ptr->user_port = up_ptr; | |
975 | up_ptr->user_ref = user_ref; | |
976 | up_ptr->usr_handle = usr_handle; | |
977 | up_ptr->ref = p_ptr->publ.ref; | |
978 | up_ptr->err_cb = error_cb; | |
979 | up_ptr->named_err_cb = named_error_cb; | |
980 | up_ptr->conn_err_cb = conn_error_cb; | |
981 | up_ptr->msg_cb = msg_cb; | |
982 | up_ptr->named_msg_cb = named_msg_cb; | |
983 | up_ptr->conn_msg_cb = conn_msg_cb; | |
984 | up_ptr->continue_event_cb = continue_event_cb; | |
985 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 986 | tipc_reg_add_port(up_ptr); |
b97bf3fd | 987 | *portref = p_ptr->publ.ref; |
4323add6 | 988 | tipc_port_unlock(p_ptr); |
0e35fd5e | 989 | return 0; |
b97bf3fd PL |
990 | } |
991 | ||
992 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) | |
993 | { | |
994 | id->ref = ref; | |
995 | id->node = tipc_own_addr; | |
0e35fd5e | 996 | return 0; |
b97bf3fd PL |
997 | } |
998 | ||
999 | int tipc_portimportance(u32 ref, unsigned int *importance) | |
1000 | { | |
1001 | struct port *p_ptr; | |
c4307285 | 1002 | |
4323add6 | 1003 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1004 | if (!p_ptr) |
1005 | return -EINVAL; | |
1006 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
4cec72c8 | 1007 | tipc_port_unlock(p_ptr); |
0e35fd5e | 1008 | return 0; |
b97bf3fd PL |
1009 | } |
1010 | ||
1011 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
1012 | { | |
1013 | struct port *p_ptr; | |
1014 | ||
1015 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1016 | return -EINVAL; | |
1017 | ||
4323add6 | 1018 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1019 | if (!p_ptr) |
1020 | return -EINVAL; | |
1021 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
4cec72c8 | 1022 | tipc_port_unlock(p_ptr); |
0e35fd5e | 1023 | return 0; |
b97bf3fd PL |
1024 | } |
1025 | ||
1026 | ||
1027 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1028 | { | |
1029 | struct port *p_ptr; | |
1030 | struct publication *publ; | |
1031 | u32 key; | |
1032 | int res = -EINVAL; | |
1033 | ||
4323add6 | 1034 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
1035 | if (!p_ptr) |
1036 | return -EINVAL; | |
1037 | ||
b97bf3fd PL |
1038 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1039 | "lower = %u, upper = %u\n", | |
1040 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
b97bf3fd PL |
1041 | if (p_ptr->publ.connected) |
1042 | goto exit; | |
1043 | if (seq->lower > seq->upper) | |
1044 | goto exit; | |
1045 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1046 | goto exit; | |
1047 | key = ref + p_ptr->pub_count + 1; | |
1048 | if (key == ref) { | |
1049 | res = -EADDRINUSE; | |
1050 | goto exit; | |
1051 | } | |
4323add6 PL |
1052 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1053 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1054 | if (publ) { |
1055 | list_add(&publ->pport_list, &p_ptr->publications); | |
1056 | p_ptr->pub_count++; | |
1057 | p_ptr->publ.published = 1; | |
0e35fd5e | 1058 | res = 0; |
b97bf3fd PL |
1059 | } |
1060 | exit: | |
4323add6 | 1061 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1062 | return res; |
1063 | } | |
1064 | ||
1065 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1066 | { | |
1067 | struct port *p_ptr; | |
1068 | struct publication *publ; | |
1069 | struct publication *tpubl; | |
1070 | int res = -EINVAL; | |
c4307285 | 1071 | |
4323add6 | 1072 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1073 | if (!p_ptr) |
1074 | return -EINVAL; | |
b97bf3fd | 1075 | if (!seq) { |
c4307285 | 1076 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1077 | &p_ptr->publications, pport_list) { |
c4307285 | 1078 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1079 | publ->ref, publ->key); |
b97bf3fd | 1080 | } |
0e35fd5e | 1081 | res = 0; |
b97bf3fd | 1082 | } else { |
c4307285 | 1083 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1084 | &p_ptr->publications, pport_list) { |
1085 | if (publ->scope != scope) | |
1086 | continue; | |
1087 | if (publ->type != seq->type) | |
1088 | continue; | |
1089 | if (publ->lower != seq->lower) | |
1090 | continue; | |
1091 | if (publ->upper != seq->upper) | |
1092 | break; | |
c4307285 | 1093 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1094 | publ->ref, publ->key); |
0e35fd5e | 1095 | res = 0; |
b97bf3fd PL |
1096 | break; |
1097 | } | |
1098 | } | |
1099 | if (list_empty(&p_ptr->publications)) | |
1100 | p_ptr->publ.published = 0; | |
4323add6 | 1101 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1102 | return res; |
1103 | } | |
1104 | ||
1105 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1106 | { | |
1107 | struct port *p_ptr; | |
1108 | struct tipc_msg *msg; | |
1109 | int res = -EINVAL; | |
1110 | ||
4323add6 | 1111 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1112 | if (!p_ptr) |
1113 | return -EINVAL; | |
1114 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1115 | goto exit; | |
1116 | if (!peer->ref) | |
1117 | goto exit; | |
1118 | ||
1119 | msg = &p_ptr->publ.phdr; | |
1120 | msg_set_destnode(msg, peer->node); | |
1121 | msg_set_destport(msg, peer->ref); | |
1122 | msg_set_orignode(msg, tipc_own_addr); | |
1123 | msg_set_origport(msg, p_ptr->publ.ref); | |
1124 | msg_set_transp_seqno(msg, 42); | |
1125 | msg_set_type(msg, TIPC_CONN_MSG); | |
1126 | if (!may_route(peer->node)) | |
1127 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1128 | else | |
1129 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1130 | ||
1131 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1132 | p_ptr->probing_state = CONFIRMED; | |
1133 | p_ptr->publ.connected = 1; | |
1134 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1135 | ||
4323add6 | 1136 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1137 | (void *)(unsigned long)ref, |
b97bf3fd | 1138 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 1139 | res = 0; |
b97bf3fd | 1140 | exit: |
4323add6 | 1141 | tipc_port_unlock(p_ptr); |
05646c91 | 1142 | p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1143 | return res; |
1144 | } | |
1145 | ||
0c3141e9 AS |
1146 | /** |
1147 | * tipc_disconnect_port - disconnect port from peer | |
1148 | * | |
1149 | * Port must be locked. | |
1150 | */ | |
1151 | ||
1152 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1153 | { | |
1154 | int res; | |
1155 | ||
1156 | if (tp_ptr->connected) { | |
1157 | tp_ptr->connected = 0; | |
1158 | /* let timer expire on it's own to avoid deadlock! */ | |
1159 | tipc_nodesub_unsubscribe( | |
1160 | &((struct port *)tp_ptr)->subscription); | |
0e35fd5e | 1161 | res = 0; |
0c3141e9 AS |
1162 | } else { |
1163 | res = -ENOTCONN; | |
1164 | } | |
1165 | return res; | |
1166 | } | |
1167 | ||
b97bf3fd PL |
1168 | /* |
1169 | * tipc_disconnect(): Disconnect port form peer. | |
1170 | * This is a node local operation. | |
1171 | */ | |
1172 | ||
1173 | int tipc_disconnect(u32 ref) | |
1174 | { | |
1175 | struct port *p_ptr; | |
0c3141e9 | 1176 | int res; |
b97bf3fd | 1177 | |
4323add6 | 1178 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1179 | if (!p_ptr) |
1180 | return -EINVAL; | |
0c3141e9 | 1181 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1182 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1183 | return res; |
1184 | } | |
1185 | ||
1186 | /* | |
1187 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1188 | */ | |
1189 | int tipc_shutdown(u32 ref) | |
1190 | { | |
1191 | struct port *p_ptr; | |
1fc54d8f | 1192 | struct sk_buff *buf = NULL; |
b97bf3fd | 1193 | |
4323add6 | 1194 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1195 | if (!p_ptr) |
1196 | return -EINVAL; | |
1197 | ||
1198 | if (p_ptr->publ.connected) { | |
1199 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1200 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1201 | imp++; | |
1202 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1203 | port_peernode(p_ptr), | |
1204 | ref, | |
1205 | tipc_own_addr, | |
1206 | imp, | |
1207 | TIPC_CONN_MSG, | |
c4307285 | 1208 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1209 | port_out_seqno(p_ptr), |
1210 | 0); | |
1211 | } | |
4323add6 PL |
1212 | tipc_port_unlock(p_ptr); |
1213 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1214 | return tipc_disconnect(ref); |
1215 | } | |
1216 | ||
b97bf3fd | 1217 | /* |
4323add6 | 1218 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1219 | * message for this node. |
1220 | */ | |
1221 | ||
31e3c3f6 | 1222 | static int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
1223 | struct iovec const *msg_sect) | |
b97bf3fd PL |
1224 | { |
1225 | struct sk_buff *buf; | |
1226 | int res; | |
c4307285 | 1227 | |
c68ca7b7 | 1228 | res = tipc_msg_build(&sender->publ.phdr, msg_sect, num_sect, |
b97bf3fd PL |
1229 | MAX_MSG_SIZE, !sender->user_port, &buf); |
1230 | if (likely(buf)) | |
4323add6 | 1231 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1232 | return res; |
1233 | } | |
1234 | ||
1235 | /** | |
1236 | * tipc_send - send message sections on connection | |
1237 | */ | |
1238 | ||
1239 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1240 | { | |
1241 | struct port *p_ptr; | |
1242 | u32 destnode; | |
1243 | int res; | |
1244 | ||
4323add6 | 1245 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1246 | if (!p_ptr || !p_ptr->publ.connected) |
1247 | return -EINVAL; | |
1248 | ||
1249 | p_ptr->publ.congested = 1; | |
4323add6 | 1250 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1251 | destnode = port_peernode(p_ptr); |
1252 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1253 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1254 | destnode); | |
b97bf3fd | 1255 | else |
4323add6 | 1256 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1257 | |
1258 | if (likely(res != -ELINKCONG)) { | |
1259 | port_incr_out_seqno(p_ptr); | |
1260 | p_ptr->publ.congested = 0; | |
1261 | p_ptr->sent++; | |
1262 | return res; | |
1263 | } | |
1264 | } | |
1265 | if (port_unreliable(p_ptr)) { | |
1266 | p_ptr->publ.congested = 0; | |
1267 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1268 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1269 | } |
1270 | return -ELINKCONG; | |
1271 | } | |
1272 | ||
b97bf3fd PL |
1273 | /** |
1274 | * tipc_forward2name - forward message sections to port name | |
1275 | */ | |
1276 | ||
31e3c3f6 | 1277 | static int tipc_forward2name(u32 ref, |
1278 | struct tipc_name const *name, | |
1279 | u32 domain, | |
1280 | u32 num_sect, | |
1281 | struct iovec const *msg_sect, | |
1282 | struct tipc_portid const *orig, | |
1283 | unsigned int importance) | |
b97bf3fd PL |
1284 | { |
1285 | struct port *p_ptr; | |
1286 | struct tipc_msg *msg; | |
1287 | u32 destnode = domain; | |
9ccc2eb4 | 1288 | u32 destport; |
b97bf3fd PL |
1289 | int res; |
1290 | ||
4323add6 | 1291 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1292 | if (!p_ptr || p_ptr->publ.connected) |
1293 | return -EINVAL; | |
1294 | ||
1295 | msg = &p_ptr->publ.phdr; | |
1296 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1297 | msg_set_orignode(msg, orig->node); | |
1298 | msg_set_origport(msg, orig->ref); | |
1299 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1300 | msg_set_nametype(msg, name->type); | |
1301 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 1302 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
b97bf3fd PL |
1303 | if (importance <= TIPC_CRITICAL_IMPORTANCE) |
1304 | msg_set_importance(msg,importance); | |
4323add6 | 1305 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1306 | msg_set_destnode(msg, destnode); |
1307 | msg_set_destport(msg, destport); | |
1308 | ||
5d9c54c1 | 1309 | if (likely(destport)) { |
b97bf3fd PL |
1310 | p_ptr->sent++; |
1311 | if (likely(destnode == tipc_own_addr)) | |
4323add6 | 1312 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
c4307285 | 1313 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
4323add6 | 1314 | destnode); |
b97bf3fd PL |
1315 | if (likely(res != -ELINKCONG)) |
1316 | return res; | |
1317 | if (port_unreliable(p_ptr)) { | |
1318 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1319 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1320 | } |
1321 | return -ELINKCONG; | |
1322 | } | |
c4307285 | 1323 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1324 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1325 | } |
1326 | ||
1327 | /** | |
1328 | * tipc_send2name - send message sections to port name | |
1329 | */ | |
1330 | ||
c4307285 | 1331 | int tipc_send2name(u32 ref, |
b97bf3fd | 1332 | struct tipc_name const *name, |
c4307285 YH |
1333 | unsigned int domain, |
1334 | unsigned int num_sect, | |
b97bf3fd PL |
1335 | struct iovec const *msg_sect) |
1336 | { | |
1337 | struct tipc_portid orig; | |
1338 | ||
1339 | orig.ref = ref; | |
1340 | orig.node = tipc_own_addr; | |
1341 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | |
1342 | TIPC_PORT_IMPORTANCE); | |
1343 | } | |
1344 | ||
c4307285 | 1345 | /** |
b97bf3fd PL |
1346 | * tipc_forward2port - forward message sections to port identity |
1347 | */ | |
1348 | ||
31e3c3f6 | 1349 | static int tipc_forward2port(u32 ref, |
1350 | struct tipc_portid const *dest, | |
1351 | unsigned int num_sect, | |
1352 | struct iovec const *msg_sect, | |
1353 | struct tipc_portid const *orig, | |
1354 | unsigned int importance) | |
b97bf3fd PL |
1355 | { |
1356 | struct port *p_ptr; | |
1357 | struct tipc_msg *msg; | |
1358 | int res; | |
1359 | ||
4323add6 | 1360 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1361 | if (!p_ptr || p_ptr->publ.connected) |
1362 | return -EINVAL; | |
1363 | ||
1364 | msg = &p_ptr->publ.phdr; | |
1365 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1366 | msg_set_orignode(msg, orig->node); | |
1367 | msg_set_origport(msg, orig->ref); | |
1368 | msg_set_destnode(msg, dest->node); | |
1369 | msg_set_destport(msg, dest->ref); | |
1370 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1371 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1372 | msg_set_importance(msg, importance); | |
1373 | p_ptr->sent++; | |
1374 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1375 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1376 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1377 | if (likely(res != -ELINKCONG)) |
1378 | return res; | |
1379 | if (port_unreliable(p_ptr)) { | |
1380 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1381 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1382 | } |
1383 | return -ELINKCONG; | |
1384 | } | |
1385 | ||
c4307285 YH |
1386 | /** |
1387 | * tipc_send2port - send message sections to port identity | |
b97bf3fd PL |
1388 | */ |
1389 | ||
c4307285 | 1390 | int tipc_send2port(u32 ref, |
b97bf3fd | 1391 | struct tipc_portid const *dest, |
c4307285 | 1392 | unsigned int num_sect, |
b97bf3fd PL |
1393 | struct iovec const *msg_sect) |
1394 | { | |
1395 | struct tipc_portid orig; | |
1396 | ||
1397 | orig.ref = ref; | |
1398 | orig.node = tipc_own_addr; | |
c4307285 | 1399 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, |
b97bf3fd PL |
1400 | TIPC_PORT_IMPORTANCE); |
1401 | } | |
1402 | ||
c4307285 | 1403 | /** |
b97bf3fd PL |
1404 | * tipc_forward_buf2port - forward message buffer to port identity |
1405 | */ | |
31e3c3f6 | 1406 | static int tipc_forward_buf2port(u32 ref, |
1407 | struct tipc_portid const *dest, | |
1408 | struct sk_buff *buf, | |
1409 | unsigned int dsz, | |
1410 | struct tipc_portid const *orig, | |
1411 | unsigned int importance) | |
b97bf3fd PL |
1412 | { |
1413 | struct port *p_ptr; | |
1414 | struct tipc_msg *msg; | |
1415 | int res; | |
1416 | ||
4323add6 | 1417 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1418 | if (!p_ptr || p_ptr->publ.connected) |
1419 | return -EINVAL; | |
1420 | ||
1421 | msg = &p_ptr->publ.phdr; | |
1422 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1423 | msg_set_orignode(msg, orig->node); | |
1424 | msg_set_origport(msg, orig->ref); | |
1425 | msg_set_destnode(msg, dest->node); | |
1426 | msg_set_destport(msg, dest->ref); | |
1427 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1428 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1429 | msg_set_importance(msg, importance); | |
1430 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | |
1431 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1432 | return -ENOMEM; | |
1433 | ||
1434 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1435 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
b97bf3fd PL |
1436 | msg_dbg(msg, "buf2port: "); |
1437 | p_ptr->sent++; | |
1438 | if (dest->node == tipc_own_addr) | |
4323add6 | 1439 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1440 | res = tipc_send_buf_fast(buf, dest->node); |
1441 | if (likely(res != -ELINKCONG)) | |
1442 | return res; | |
1443 | if (port_unreliable(p_ptr)) | |
1444 | return dsz; | |
1445 | return -ELINKCONG; | |
1446 | } | |
1447 | ||
c4307285 | 1448 | /** |
b97bf3fd PL |
1449 | * tipc_send_buf2port - send message buffer to port identity |
1450 | */ | |
1451 | ||
c4307285 | 1452 | int tipc_send_buf2port(u32 ref, |
b97bf3fd | 1453 | struct tipc_portid const *dest, |
c4307285 | 1454 | struct sk_buff *buf, |
b97bf3fd PL |
1455 | unsigned int dsz) |
1456 | { | |
1457 | struct tipc_portid orig; | |
1458 | ||
1459 | orig.ref = ref; | |
1460 | orig.node = tipc_own_addr; | |
c4307285 | 1461 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, |
b97bf3fd PL |
1462 | TIPC_PORT_IMPORTANCE); |
1463 | } | |
1464 |