Commit | Line | Data |
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b97bf3fd PL |
1 | /* |
2 | * net/tipc/port.c: TIPC port code | |
3 | * | |
593a5f22 | 4 | * Copyright (c) 1992-2006, Ericsson AB |
b97bf3fd | 5 | * Copyright (c) 2004-2005, 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" | |
44 | #include "port.h" | |
45 | #include "name_table.h" | |
46 | #include "user_reg.h" | |
47 | #include "msg.h" | |
48 | #include "bcast.h" | |
49 | ||
50 | /* Connection management: */ | |
51 | #define PROBING_INTERVAL 3600000 /* [ms] => 1 h */ | |
52 | #define CONFIRMED 0 | |
53 | #define PROBING 1 | |
54 | ||
55 | #define MAX_REJECT_SIZE 1024 | |
56 | ||
1fc54d8f SR |
57 | static struct sk_buff *msg_queue_head = NULL; |
58 | static struct sk_buff *msg_queue_tail = NULL; | |
b97bf3fd | 59 | |
34af946a IM |
60 | DEFINE_SPINLOCK(tipc_port_list_lock); |
61 | static DEFINE_SPINLOCK(queue_lock); | |
b97bf3fd | 62 | |
4323add6 | 63 | static LIST_HEAD(ports); |
b97bf3fd PL |
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); | |
68 | ||
69 | ||
05790c64 | 70 | static u32 port_peernode(struct port *p_ptr) |
b97bf3fd PL |
71 | { |
72 | return msg_destnode(&p_ptr->publ.phdr); | |
73 | } | |
74 | ||
05790c64 | 75 | static u32 port_peerport(struct port *p_ptr) |
b97bf3fd PL |
76 | { |
77 | return msg_destport(&p_ptr->publ.phdr); | |
78 | } | |
79 | ||
05790c64 | 80 | static u32 port_out_seqno(struct port *p_ptr) |
b97bf3fd PL |
81 | { |
82 | return msg_transp_seqno(&p_ptr->publ.phdr); | |
83 | } | |
84 | ||
05790c64 | 85 | static void port_incr_out_seqno(struct port *p_ptr) |
b97bf3fd PL |
86 | { |
87 | struct tipc_msg *m = &p_ptr->publ.phdr; | |
88 | ||
89 | if (likely(!msg_routed(m))) | |
90 | return; | |
91 | msg_set_transp_seqno(m, (msg_transp_seqno(m) + 1)); | |
92 | } | |
93 | ||
94 | /** | |
95 | * tipc_multicast - send a multicast message to local and remote destinations | |
96 | */ | |
97 | ||
98 | int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, u32 domain, | |
99 | u32 num_sect, struct iovec const *msg_sect) | |
100 | { | |
101 | struct tipc_msg *hdr; | |
102 | struct sk_buff *buf; | |
103 | struct sk_buff *ibuf = NULL; | |
104 | struct port_list dports = {0, NULL, }; | |
4323add6 | 105 | struct port *oport = tipc_port_deref(ref); |
b97bf3fd PL |
106 | int ext_targets; |
107 | int res; | |
108 | ||
109 | if (unlikely(!oport)) | |
110 | return -EINVAL; | |
111 | ||
112 | /* Create multicast message */ | |
113 | ||
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); | |
122 | if (unlikely(!buf)) | |
123 | return res; | |
124 | ||
125 | /* Figure out where to send multicast message */ | |
126 | ||
4323add6 PL |
127 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
128 | TIPC_NODE_SCOPE, &dports); | |
b97bf3fd PL |
129 | |
130 | /* Send message to destinations (duplicate it only if necessary) */ | |
131 | ||
132 | if (ext_targets) { | |
133 | if (dports.count != 0) { | |
134 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
135 | if (ibuf == NULL) { | |
4323add6 | 136 | tipc_port_list_free(&dports); |
b97bf3fd PL |
137 | buf_discard(buf); |
138 | return -ENOMEM; | |
139 | } | |
140 | } | |
4323add6 | 141 | res = tipc_bclink_send_msg(buf); |
b97bf3fd PL |
142 | if ((res < 0) && (dports.count != 0)) { |
143 | buf_discard(ibuf); | |
144 | } | |
145 | } else { | |
146 | ibuf = buf; | |
147 | } | |
148 | ||
149 | if (res >= 0) { | |
150 | if (ibuf) | |
4323add6 | 151 | tipc_port_recv_mcast(ibuf, &dports); |
b97bf3fd | 152 | } else { |
4323add6 | 153 | tipc_port_list_free(&dports); |
b97bf3fd PL |
154 | } |
155 | return res; | |
156 | } | |
157 | ||
158 | /** | |
4323add6 | 159 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
b97bf3fd PL |
160 | * |
161 | * If there is no port list, perform a lookup to create one | |
162 | */ | |
163 | ||
4323add6 | 164 | void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp) |
b97bf3fd PL |
165 | { |
166 | struct tipc_msg* msg; | |
167 | struct port_list dports = {0, NULL, }; | |
168 | struct port_list *item = dp; | |
169 | int cnt = 0; | |
170 | ||
b97bf3fd PL |
171 | msg = buf_msg(buf); |
172 | ||
173 | /* Create destination port list, if one wasn't supplied */ | |
174 | ||
175 | if (dp == NULL) { | |
4323add6 | 176 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
177 | msg_namelower(msg), |
178 | msg_nameupper(msg), | |
179 | TIPC_CLUSTER_SCOPE, | |
180 | &dports); | |
181 | item = dp = &dports; | |
182 | } | |
183 | ||
184 | /* Deliver a copy of message to each destination port */ | |
185 | ||
186 | if (dp->count != 0) { | |
187 | if (dp->count == 1) { | |
188 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
189 | tipc_port_recv_msg(buf); |
190 | tipc_port_list_free(dp); | |
b97bf3fd PL |
191 | return; |
192 | } | |
193 | for (; cnt < dp->count; cnt++) { | |
194 | int index = cnt % PLSIZE; | |
195 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
196 | ||
197 | if (b == NULL) { | |
a10bd924 | 198 | warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
199 | msg_dbg(msg, "LOST:"); |
200 | goto exit; | |
201 | } | |
202 | if ((index == 0) && (cnt != 0)) { | |
203 | item = item->next; | |
204 | } | |
205 | msg_set_destport(buf_msg(b),item->ports[index]); | |
4323add6 | 206 | tipc_port_recv_msg(b); |
b97bf3fd PL |
207 | } |
208 | } | |
209 | exit: | |
210 | buf_discard(buf); | |
4323add6 | 211 | tipc_port_list_free(dp); |
b97bf3fd PL |
212 | } |
213 | ||
214 | /** | |
215 | * tipc_createport_raw - create a native TIPC port | |
216 | * | |
217 | * Returns local port reference | |
218 | */ | |
219 | ||
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) | |
224 | { | |
225 | struct port *p_ptr; | |
226 | struct tipc_msg *msg; | |
227 | u32 ref; | |
228 | ||
0da974f4 | 229 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 AS |
230 | if (!p_ptr) { |
231 | warn("Port creation failed, no memory\n"); | |
b97bf3fd PL |
232 | return 0; |
233 | } | |
4323add6 | 234 | ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock); |
b97bf3fd | 235 | if (!ref) { |
a10bd924 | 236 | warn("Port creation failed, reference table exhausted\n"); |
b97bf3fd PL |
237 | kfree(p_ptr); |
238 | return 0; | |
239 | } | |
240 | ||
4323add6 | 241 | tipc_port_lock(ref); |
b97bf3fd PL |
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; | |
250 | p_ptr->sent = 1; | |
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); | |
1fc54d8f | 254 | p_ptr->congested_link = NULL; |
b97bf3fd PL |
255 | p_ptr->max_pkt = MAX_PKT_DEFAULT; |
256 | p_ptr->dispatcher = dispatcher; | |
257 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 258 | p_ptr->user_port = NULL; |
b97bf3fd | 259 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 260 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
261 | INIT_LIST_HEAD(&p_ptr->publications); |
262 | INIT_LIST_HEAD(&p_ptr->port_list); | |
263 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 PL |
264 | spin_unlock_bh(&tipc_port_list_lock); |
265 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
266 | return ref; |
267 | } | |
268 | ||
269 | int tipc_deleteport(u32 ref) | |
270 | { | |
271 | struct port *p_ptr; | |
1fc54d8f | 272 | struct sk_buff *buf = NULL; |
b97bf3fd | 273 | |
1fc54d8f | 274 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 275 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
276 | if (!p_ptr) |
277 | return -EINVAL; | |
278 | ||
4323add6 PL |
279 | tipc_ref_discard(ref); |
280 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
281 | |
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); | |
4323add6 | 285 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
286 | } |
287 | if (p_ptr->user_port) { | |
4323add6 | 288 | tipc_reg_remove_port(p_ptr->user_port); |
b97bf3fd PL |
289 | kfree(p_ptr->user_port); |
290 | } | |
291 | ||
4323add6 | 292 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
293 | list_del(&p_ptr->port_list); |
294 | list_del(&p_ptr->wait_list); | |
4323add6 | 295 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
296 | k_term_timer(&p_ptr->timer); |
297 | kfree(p_ptr); | |
298 | dbg("Deleted port %u\n", ref); | |
4323add6 | 299 | tipc_net_route_msg(buf); |
b97bf3fd PL |
300 | return TIPC_OK; |
301 | } | |
302 | ||
303 | /** | |
304 | * tipc_get_port() - return port associated with 'ref' | |
305 | * | |
306 | * Note: Port is not locked. | |
307 | */ | |
308 | ||
309 | struct tipc_port *tipc_get_port(const u32 ref) | |
310 | { | |
4323add6 | 311 | return (struct tipc_port *)tipc_ref_deref(ref); |
b97bf3fd PL |
312 | } |
313 | ||
314 | /** | |
315 | * tipc_get_handle - return user handle associated to port 'ref' | |
316 | */ | |
317 | ||
318 | void *tipc_get_handle(const u32 ref) | |
319 | { | |
320 | struct port *p_ptr; | |
321 | void * handle; | |
322 | ||
4323add6 | 323 | p_ptr = tipc_port_lock(ref); |
b97bf3fd | 324 | if (!p_ptr) |
1fc54d8f | 325 | return NULL; |
b97bf3fd | 326 | handle = p_ptr->publ.usr_handle; |
4323add6 | 327 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
328 | return handle; |
329 | } | |
330 | ||
05790c64 | 331 | static int port_unreliable(struct port *p_ptr) |
b97bf3fd PL |
332 | { |
333 | return msg_src_droppable(&p_ptr->publ.phdr); | |
334 | } | |
335 | ||
336 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
337 | { | |
338 | struct port *p_ptr; | |
339 | ||
4323add6 | 340 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
341 | if (!p_ptr) |
342 | return -EINVAL; | |
343 | *isunreliable = port_unreliable(p_ptr); | |
344 | spin_unlock_bh(p_ptr->publ.lock); | |
345 | return TIPC_OK; | |
346 | } | |
347 | ||
348 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
349 | { | |
350 | struct port *p_ptr; | |
351 | ||
4323add6 | 352 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
353 | if (!p_ptr) |
354 | return -EINVAL; | |
355 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | |
4323add6 | 356 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
357 | return TIPC_OK; |
358 | } | |
359 | ||
05790c64 | 360 | static int port_unreturnable(struct port *p_ptr) |
b97bf3fd PL |
361 | { |
362 | return msg_dest_droppable(&p_ptr->publ.phdr); | |
363 | } | |
364 | ||
365 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
366 | { | |
367 | struct port *p_ptr; | |
368 | ||
4323add6 | 369 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
370 | if (!p_ptr) |
371 | return -EINVAL; | |
372 | *isunrejectable = port_unreturnable(p_ptr); | |
373 | spin_unlock_bh(p_ptr->publ.lock); | |
374 | return TIPC_OK; | |
375 | } | |
376 | ||
377 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
378 | { | |
379 | struct port *p_ptr; | |
380 | ||
4323add6 | 381 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
382 | if (!p_ptr) |
383 | return -EINVAL; | |
384 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | |
4323add6 | 385 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
386 | return TIPC_OK; |
387 | } | |
388 | ||
389 | /* | |
390 | * port_build_proto_msg(): build a port level protocol | |
391 | * or a connection abortion message. Called with | |
392 | * tipc_port lock on. | |
393 | */ | |
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, | |
397 | u32 seqno, u32 ack) | |
398 | { | |
399 | struct sk_buff *buf; | |
400 | struct tipc_msg *msg; | |
401 | ||
402 | buf = buf_acquire(LONG_H_SIZE); | |
403 | if (buf) { | |
404 | msg = buf_msg(buf); | |
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>:"); | |
413 | } | |
414 | return buf; | |
415 | } | |
416 | ||
417 | int tipc_set_msg_option(struct tipc_port *tp_ptr, const char *opt, const u32 sz) | |
418 | { | |
419 | msg_expand(&tp_ptr->phdr, msg_destnode(&tp_ptr->phdr)); | |
420 | msg_set_options(&tp_ptr->phdr, opt, sz); | |
421 | return TIPC_OK; | |
422 | } | |
423 | ||
424 | int tipc_reject_msg(struct sk_buff *buf, u32 err) | |
425 | { | |
426 | struct tipc_msg *msg = buf_msg(buf); | |
427 | struct sk_buff *rbuf; | |
428 | struct tipc_msg *rmsg; | |
429 | int hdr_sz; | |
430 | u32 imp = msg_importance(msg); | |
431 | u32 data_sz = msg_data_sz(msg); | |
432 | ||
433 | if (data_sz > MAX_REJECT_SIZE) | |
434 | data_sz = MAX_REJECT_SIZE; | |
435 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
436 | imp++; | |
437 | msg_dbg(msg, "port->rej: "); | |
438 | ||
439 | /* discard rejected message if it shouldn't be returned to sender */ | |
440 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
441 | buf_discard(buf); | |
442 | return data_sz; | |
443 | } | |
444 | ||
445 | /* construct rejected message */ | |
446 | if (msg_mcast(msg)) | |
447 | hdr_sz = MCAST_H_SIZE; | |
448 | else | |
449 | hdr_sz = LONG_H_SIZE; | |
450 | rbuf = buf_acquire(data_sz + hdr_sz); | |
451 | if (rbuf == NULL) { | |
452 | buf_discard(buf); | |
453 | return data_sz; | |
454 | } | |
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)); | |
460 | if (msg_short(msg)) | |
461 | msg_set_orignode(rmsg, tipc_own_addr); | |
462 | else | |
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); | |
468 | ||
469 | /* send self-abort message when rejecting on a connected port */ | |
470 | if (msg_connected(msg)) { | |
1fc54d8f | 471 | struct sk_buff *abuf = NULL; |
4323add6 | 472 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
473 | |
474 | if (p_ptr) { | |
475 | if (p_ptr->publ.connected) | |
476 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 477 | tipc_port_unlock(p_ptr); |
b97bf3fd | 478 | } |
4323add6 | 479 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
480 | } |
481 | ||
482 | /* send rejected message */ | |
483 | buf_discard(buf); | |
4323add6 | 484 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
485 | return data_sz; |
486 | } | |
487 | ||
4323add6 PL |
488 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
489 | struct iovec const *msg_sect, u32 num_sect, | |
490 | int err) | |
b97bf3fd PL |
491 | { |
492 | struct sk_buff *buf; | |
493 | int res; | |
494 | ||
495 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, | |
496 | !p_ptr->user_port, &buf); | |
497 | if (!buf) | |
498 | return res; | |
499 | ||
500 | return tipc_reject_msg(buf, err); | |
501 | } | |
502 | ||
503 | static void port_timeout(unsigned long ref) | |
504 | { | |
4323add6 | 505 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 506 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
507 | |
508 | if (!p_ptr || !p_ptr->publ.connected) | |
509 | return; | |
510 | ||
511 | /* Last probe answered ? */ | |
512 | if (p_ptr->probing_state == PROBING) { | |
513 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
514 | } else { | |
515 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
516 | port_peernode(p_ptr), | |
517 | p_ptr->publ.ref, | |
518 | tipc_own_addr, | |
519 | CONN_MANAGER, | |
520 | CONN_PROBE, | |
521 | TIPC_OK, | |
522 | port_out_seqno(p_ptr), | |
523 | 0); | |
524 | port_incr_out_seqno(p_ptr); | |
525 | p_ptr->probing_state = PROBING; | |
526 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
527 | } | |
4323add6 PL |
528 | tipc_port_unlock(p_ptr); |
529 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
530 | } |
531 | ||
532 | ||
533 | static void port_handle_node_down(unsigned long ref) | |
534 | { | |
4323add6 | 535 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 536 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
537 | |
538 | if (!p_ptr) | |
539 | return; | |
540 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
541 | tipc_port_unlock(p_ptr); |
542 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
543 | } |
544 | ||
545 | ||
546 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
547 | { | |
548 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
549 | ||
550 | if (!p_ptr->publ.connected) | |
1fc54d8f | 551 | return NULL; |
b97bf3fd PL |
552 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
553 | imp++; | |
554 | return port_build_proto_msg(p_ptr->publ.ref, | |
555 | tipc_own_addr, | |
556 | port_peerport(p_ptr), | |
557 | port_peernode(p_ptr), | |
558 | imp, | |
559 | TIPC_CONN_MSG, | |
560 | err, | |
561 | p_ptr->last_in_seqno + 1, | |
562 | 0); | |
563 | } | |
564 | ||
565 | ||
566 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
567 | { | |
568 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
569 | ||
570 | if (!p_ptr->publ.connected) | |
1fc54d8f | 571 | return NULL; |
b97bf3fd PL |
572 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
573 | imp++; | |
574 | return port_build_proto_msg(port_peerport(p_ptr), | |
575 | port_peernode(p_ptr), | |
576 | p_ptr->publ.ref, | |
577 | tipc_own_addr, | |
578 | imp, | |
579 | TIPC_CONN_MSG, | |
580 | err, | |
581 | port_out_seqno(p_ptr), | |
582 | 0); | |
583 | } | |
584 | ||
4323add6 | 585 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
586 | { |
587 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 588 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 589 | u32 err = TIPC_OK; |
1fc54d8f SR |
590 | struct sk_buff *r_buf = NULL; |
591 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd PL |
592 | |
593 | msg_dbg(msg, "PORT<RECV<:"); | |
594 | ||
595 | if (!p_ptr) { | |
596 | err = TIPC_ERR_NO_PORT; | |
597 | } else if (p_ptr->publ.connected) { | |
598 | if (port_peernode(p_ptr) != msg_orignode(msg)) | |
599 | err = TIPC_ERR_NO_PORT; | |
600 | if (port_peerport(p_ptr) != msg_origport(msg)) | |
601 | err = TIPC_ERR_NO_PORT; | |
602 | if (!err && msg_routed(msg)) { | |
603 | u32 seqno = msg_transp_seqno(msg); | |
604 | u32 myno = ++p_ptr->last_in_seqno; | |
605 | if (seqno != myno) { | |
606 | err = TIPC_ERR_NO_PORT; | |
607 | abort_buf = port_build_self_abort_msg(p_ptr, err); | |
608 | } | |
609 | } | |
610 | if (msg_type(msg) == CONN_ACK) { | |
4323add6 | 611 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
612 | p_ptr->publ.congested && |
613 | p_ptr->wakeup; | |
614 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 615 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
616 | goto exit; |
617 | p_ptr->publ.congested = 0; | |
618 | if (!wakeup) | |
619 | goto exit; | |
620 | p_ptr->wakeup(&p_ptr->publ); | |
621 | goto exit; | |
622 | } | |
623 | } else if (p_ptr->publ.published) { | |
624 | err = TIPC_ERR_NO_PORT; | |
625 | } | |
626 | if (err) { | |
627 | r_buf = port_build_proto_msg(msg_origport(msg), | |
628 | msg_orignode(msg), | |
629 | msg_destport(msg), | |
630 | tipc_own_addr, | |
631 | DATA_HIGH, | |
632 | TIPC_CONN_MSG, | |
633 | err, | |
634 | 0, | |
635 | 0); | |
636 | goto exit; | |
637 | } | |
638 | ||
639 | /* All is fine */ | |
640 | if (msg_type(msg) == CONN_PROBE) { | |
641 | r_buf = port_build_proto_msg(msg_origport(msg), | |
642 | msg_orignode(msg), | |
643 | msg_destport(msg), | |
644 | tipc_own_addr, | |
645 | CONN_MANAGER, | |
646 | CONN_PROBE_REPLY, | |
647 | TIPC_OK, | |
648 | port_out_seqno(p_ptr), | |
649 | 0); | |
650 | } | |
651 | p_ptr->probing_state = CONFIRMED; | |
652 | port_incr_out_seqno(p_ptr); | |
653 | exit: | |
654 | if (p_ptr) | |
4323add6 PL |
655 | tipc_port_unlock(p_ptr); |
656 | tipc_net_route_msg(r_buf); | |
657 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
658 | buf_discard(buf); |
659 | } | |
660 | ||
661 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
662 | { | |
663 | struct publication *publ; | |
664 | ||
665 | if (full_id) | |
666 | tipc_printf(buf, "<%u.%u.%u:%u>:", | |
667 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), | |
668 | tipc_node(tipc_own_addr), p_ptr->publ.ref); | |
669 | else | |
670 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
671 | ||
672 | if (p_ptr->publ.connected) { | |
673 | u32 dport = port_peerport(p_ptr); | |
674 | u32 destnode = port_peernode(p_ptr); | |
675 | ||
676 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
677 | tipc_zone(destnode), tipc_cluster(destnode), | |
678 | tipc_node(destnode), dport); | |
679 | if (p_ptr->publ.conn_type != 0) | |
680 | tipc_printf(buf, " via {%u,%u}", | |
681 | p_ptr->publ.conn_type, | |
682 | p_ptr->publ.conn_instance); | |
683 | } | |
684 | else if (p_ptr->publ.published) { | |
685 | tipc_printf(buf, " bound to"); | |
686 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
687 | if (publ->lower == publ->upper) | |
688 | tipc_printf(buf, " {%u,%u}", publ->type, | |
689 | publ->lower); | |
690 | else | |
691 | tipc_printf(buf, " {%u,%u,%u}", publ->type, | |
692 | publ->lower, publ->upper); | |
693 | } | |
694 | } | |
695 | tipc_printf(buf, "\n"); | |
696 | } | |
697 | ||
698 | #define MAX_PORT_QUERY 32768 | |
699 | ||
4323add6 | 700 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
701 | { |
702 | struct sk_buff *buf; | |
703 | struct tlv_desc *rep_tlv; | |
704 | struct print_buf pb; | |
705 | struct port *p_ptr; | |
706 | int str_len; | |
707 | ||
4323add6 | 708 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
709 | if (!buf) |
710 | return NULL; | |
711 | rep_tlv = (struct tlv_desc *)buf->data; | |
712 | ||
4323add6 PL |
713 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
714 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
715 | list_for_each_entry(p_ptr, &ports, port_list) { |
716 | spin_lock_bh(p_ptr->publ.lock); | |
717 | port_print(p_ptr, &pb, 0); | |
718 | spin_unlock_bh(p_ptr->publ.lock); | |
719 | } | |
4323add6 PL |
720 | spin_unlock_bh(&tipc_port_list_lock); |
721 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
722 | |
723 | skb_put(buf, TLV_SPACE(str_len)); | |
724 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
725 | ||
726 | return buf; | |
727 | } | |
728 | ||
729 | #if 0 | |
730 | ||
731 | #define MAX_PORT_STATS 2000 | |
732 | ||
733 | struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) | |
734 | { | |
735 | u32 ref; | |
736 | struct port *p_ptr; | |
737 | struct sk_buff *buf; | |
738 | struct tlv_desc *rep_tlv; | |
739 | struct print_buf pb; | |
740 | int str_len; | |
741 | ||
742 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) | |
743 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
744 | ||
745 | ref = *(u32 *)TLV_DATA(req_tlv_area); | |
746 | ref = ntohl(ref); | |
747 | ||
4323add6 | 748 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
749 | if (!p_ptr) |
750 | return cfg_reply_error_string("port not found"); | |
751 | ||
4323add6 | 752 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); |
b97bf3fd | 753 | if (!buf) { |
4323add6 | 754 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
755 | return NULL; |
756 | } | |
757 | rep_tlv = (struct tlv_desc *)buf->data; | |
758 | ||
4323add6 | 759 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); |
b97bf3fd PL |
760 | port_print(p_ptr, &pb, 1); |
761 | /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ | |
4323add6 PL |
762 | tipc_port_unlock(p_ptr); |
763 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
764 | |
765 | skb_put(buf, TLV_SPACE(str_len)); | |
766 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
767 | ||
768 | return buf; | |
769 | } | |
770 | ||
771 | #endif | |
772 | ||
4323add6 | 773 | void tipc_port_reinit(void) |
b97bf3fd PL |
774 | { |
775 | struct port *p_ptr; | |
776 | struct tipc_msg *msg; | |
777 | ||
4323add6 | 778 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
779 | list_for_each_entry(p_ptr, &ports, port_list) { |
780 | msg = &p_ptr->publ.phdr; | |
781 | if (msg_orignode(msg) == tipc_own_addr) | |
782 | break; | |
783 | msg_set_orignode(msg, tipc_own_addr); | |
784 | } | |
4323add6 | 785 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
786 | } |
787 | ||
788 | ||
789 | /* | |
790 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
791 | * to the tipc_port interface. | |
792 | */ | |
793 | ||
794 | static void port_dispatcher_sigh(void *dummy) | |
795 | { | |
796 | struct sk_buff *buf; | |
797 | ||
798 | spin_lock_bh(&queue_lock); | |
799 | buf = msg_queue_head; | |
1fc54d8f | 800 | msg_queue_head = NULL; |
b97bf3fd PL |
801 | spin_unlock_bh(&queue_lock); |
802 | ||
803 | while (buf) { | |
804 | struct port *p_ptr; | |
805 | struct user_port *up_ptr; | |
806 | struct tipc_portid orig; | |
807 | struct tipc_name_seq dseq; | |
808 | void *usr_handle; | |
809 | int connected; | |
810 | int published; | |
9688243b | 811 | u32 message_type; |
b97bf3fd PL |
812 | |
813 | struct sk_buff *next = buf->next; | |
814 | struct tipc_msg *msg = buf_msg(buf); | |
815 | u32 dref = msg_destport(msg); | |
816 | ||
9688243b AS |
817 | message_type = msg_type(msg); |
818 | if (message_type > TIPC_DIRECT_MSG) | |
819 | goto reject; /* Unsupported message type */ | |
820 | ||
4323add6 | 821 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
822 | if (!p_ptr) |
823 | goto reject; /* Port deleted while msg in queue */ | |
824 | ||
b97bf3fd PL |
825 | orig.ref = msg_origport(msg); |
826 | orig.node = msg_orignode(msg); | |
827 | up_ptr = p_ptr->user_port; | |
828 | usr_handle = up_ptr->usr_handle; | |
829 | connected = p_ptr->publ.connected; | |
830 | published = p_ptr->publ.published; | |
831 | ||
832 | if (unlikely(msg_errcode(msg))) | |
833 | goto err; | |
834 | ||
9688243b | 835 | switch (message_type) { |
b97bf3fd PL |
836 | |
837 | case TIPC_CONN_MSG:{ | |
838 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
839 | u32 peer_port = port_peerport(p_ptr); | |
840 | u32 peer_node = port_peernode(p_ptr); | |
841 | ||
842 | spin_unlock_bh(p_ptr->publ.lock); | |
843 | if (unlikely(!connected)) { | |
844 | if (unlikely(published)) | |
845 | goto reject; | |
846 | tipc_connect2port(dref,&orig); | |
847 | } | |
848 | if (unlikely(msg_origport(msg) != peer_port)) | |
849 | goto reject; | |
850 | if (unlikely(msg_orignode(msg) != peer_node)) | |
851 | goto reject; | |
852 | if (unlikely(!cb)) | |
853 | goto reject; | |
854 | if (unlikely(++p_ptr->publ.conn_unacked >= | |
855 | TIPC_FLOW_CONTROL_WIN)) | |
856 | tipc_acknowledge(dref, | |
857 | p_ptr->publ.conn_unacked); | |
858 | skb_pull(buf, msg_hdr_sz(msg)); | |
859 | cb(usr_handle, dref, &buf, msg_data(msg), | |
860 | msg_data_sz(msg)); | |
861 | break; | |
862 | } | |
863 | case TIPC_DIRECT_MSG:{ | |
864 | tipc_msg_event cb = up_ptr->msg_cb; | |
865 | ||
866 | spin_unlock_bh(p_ptr->publ.lock); | |
867 | if (unlikely(connected)) | |
868 | goto reject; | |
869 | if (unlikely(!cb)) | |
870 | goto reject; | |
871 | skb_pull(buf, msg_hdr_sz(msg)); | |
872 | cb(usr_handle, dref, &buf, msg_data(msg), | |
873 | msg_data_sz(msg), msg_importance(msg), | |
874 | &orig); | |
875 | break; | |
876 | } | |
9688243b | 877 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
878 | case TIPC_NAMED_MSG:{ |
879 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
880 | ||
881 | spin_unlock_bh(p_ptr->publ.lock); | |
882 | if (unlikely(connected)) | |
883 | goto reject; | |
884 | if (unlikely(!cb)) | |
885 | goto reject; | |
886 | if (unlikely(!published)) | |
887 | goto reject; | |
888 | dseq.type = msg_nametype(msg); | |
889 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
890 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
891 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd PL |
892 | skb_pull(buf, msg_hdr_sz(msg)); |
893 | cb(usr_handle, dref, &buf, msg_data(msg), | |
894 | msg_data_sz(msg), msg_importance(msg), | |
895 | &orig, &dseq); | |
896 | break; | |
897 | } | |
898 | } | |
899 | if (buf) | |
900 | buf_discard(buf); | |
901 | buf = next; | |
902 | continue; | |
903 | err: | |
9688243b | 904 | switch (message_type) { |
b97bf3fd PL |
905 | |
906 | case TIPC_CONN_MSG:{ | |
907 | tipc_conn_shutdown_event cb = | |
908 | up_ptr->conn_err_cb; | |
909 | u32 peer_port = port_peerport(p_ptr); | |
910 | u32 peer_node = port_peernode(p_ptr); | |
911 | ||
912 | spin_unlock_bh(p_ptr->publ.lock); | |
913 | if (!connected || !cb) | |
914 | break; | |
915 | if (msg_origport(msg) != peer_port) | |
916 | break; | |
917 | if (msg_orignode(msg) != peer_node) | |
918 | break; | |
919 | tipc_disconnect(dref); | |
920 | skb_pull(buf, msg_hdr_sz(msg)); | |
921 | cb(usr_handle, dref, &buf, msg_data(msg), | |
922 | msg_data_sz(msg), msg_errcode(msg)); | |
923 | break; | |
924 | } | |
925 | case TIPC_DIRECT_MSG:{ | |
926 | tipc_msg_err_event cb = up_ptr->err_cb; | |
927 | ||
928 | spin_unlock_bh(p_ptr->publ.lock); | |
929 | if (connected || !cb) | |
930 | break; | |
931 | skb_pull(buf, msg_hdr_sz(msg)); | |
932 | cb(usr_handle, dref, &buf, msg_data(msg), | |
933 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
934 | break; | |
935 | } | |
9688243b | 936 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
937 | case TIPC_NAMED_MSG:{ |
938 | tipc_named_msg_err_event cb = | |
939 | up_ptr->named_err_cb; | |
940 | ||
941 | spin_unlock_bh(p_ptr->publ.lock); | |
942 | if (connected || !cb) | |
943 | break; | |
944 | dseq.type = msg_nametype(msg); | |
945 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
946 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
947 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd PL |
948 | skb_pull(buf, msg_hdr_sz(msg)); |
949 | cb(usr_handle, dref, &buf, msg_data(msg), | |
950 | msg_data_sz(msg), msg_errcode(msg), &dseq); | |
951 | break; | |
952 | } | |
953 | } | |
954 | if (buf) | |
955 | buf_discard(buf); | |
956 | buf = next; | |
957 | continue; | |
958 | reject: | |
959 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
960 | buf = next; | |
961 | } | |
962 | } | |
963 | ||
964 | /* | |
965 | * port_dispatcher(): Dispatcher for messages destinated | |
966 | * to the tipc_port interface. Called with port locked. | |
967 | */ | |
968 | ||
969 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
970 | { | |
971 | buf->next = NULL; | |
972 | spin_lock_bh(&queue_lock); | |
973 | if (msg_queue_head) { | |
974 | msg_queue_tail->next = buf; | |
975 | msg_queue_tail = buf; | |
976 | } else { | |
977 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 978 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
979 | } |
980 | spin_unlock_bh(&queue_lock); | |
981 | return TIPC_OK; | |
982 | } | |
983 | ||
984 | /* | |
985 | * Wake up port after congestion: Called with port locked, | |
986 | * | |
987 | */ | |
988 | ||
989 | static void port_wakeup_sh(unsigned long ref) | |
990 | { | |
991 | struct port *p_ptr; | |
992 | struct user_port *up_ptr; | |
1fc54d8f SR |
993 | tipc_continue_event cb = NULL; |
994 | void *uh = NULL; | |
b97bf3fd | 995 | |
4323add6 | 996 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
997 | if (p_ptr) { |
998 | up_ptr = p_ptr->user_port; | |
999 | if (up_ptr) { | |
1000 | cb = up_ptr->continue_event_cb; | |
1001 | uh = up_ptr->usr_handle; | |
1002 | } | |
4323add6 | 1003 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1004 | } |
1005 | if (cb) | |
1006 | cb(uh, ref); | |
1007 | } | |
1008 | ||
1009 | ||
1010 | static void port_wakeup(struct tipc_port *p_ptr) | |
1011 | { | |
4323add6 | 1012 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
1013 | } |
1014 | ||
1015 | void tipc_acknowledge(u32 ref, u32 ack) | |
1016 | { | |
1017 | struct port *p_ptr; | |
1fc54d8f | 1018 | struct sk_buff *buf = NULL; |
b97bf3fd | 1019 | |
4323add6 | 1020 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1021 | if (!p_ptr) |
1022 | return; | |
1023 | if (p_ptr->publ.connected) { | |
1024 | p_ptr->publ.conn_unacked -= ack; | |
1025 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1026 | port_peernode(p_ptr), | |
1027 | ref, | |
1028 | tipc_own_addr, | |
1029 | CONN_MANAGER, | |
1030 | CONN_ACK, | |
1031 | TIPC_OK, | |
1032 | port_out_seqno(p_ptr), | |
1033 | ack); | |
1034 | } | |
4323add6 PL |
1035 | tipc_port_unlock(p_ptr); |
1036 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1037 | } |
1038 | ||
1039 | /* | |
1040 | * tipc_createport(): user level call. Will add port to | |
1041 | * registry if non-zero user_ref. | |
1042 | */ | |
1043 | ||
1044 | int tipc_createport(u32 user_ref, | |
1045 | void *usr_handle, | |
1046 | unsigned int importance, | |
1047 | tipc_msg_err_event error_cb, | |
1048 | tipc_named_msg_err_event named_error_cb, | |
1049 | tipc_conn_shutdown_event conn_error_cb, | |
1050 | tipc_msg_event msg_cb, | |
1051 | tipc_named_msg_event named_msg_cb, | |
1052 | tipc_conn_msg_event conn_msg_cb, | |
1053 | tipc_continue_event continue_event_cb,/* May be zero */ | |
1054 | u32 *portref) | |
1055 | { | |
1056 | struct user_port *up_ptr; | |
1057 | struct port *p_ptr; | |
1058 | u32 ref; | |
1059 | ||
0da974f4 | 1060 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 1061 | if (!up_ptr) { |
a75bf874 | 1062 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
1063 | return -ENOMEM; |
1064 | } | |
1fc54d8f | 1065 | ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, importance); |
4323add6 | 1066 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1067 | if (!p_ptr) { |
1068 | kfree(up_ptr); | |
1069 | return -ENOMEM; | |
1070 | } | |
1071 | ||
1072 | p_ptr->user_port = up_ptr; | |
1073 | up_ptr->user_ref = user_ref; | |
1074 | up_ptr->usr_handle = usr_handle; | |
1075 | up_ptr->ref = p_ptr->publ.ref; | |
1076 | up_ptr->err_cb = error_cb; | |
1077 | up_ptr->named_err_cb = named_error_cb; | |
1078 | up_ptr->conn_err_cb = conn_error_cb; | |
1079 | up_ptr->msg_cb = msg_cb; | |
1080 | up_ptr->named_msg_cb = named_msg_cb; | |
1081 | up_ptr->conn_msg_cb = conn_msg_cb; | |
1082 | up_ptr->continue_event_cb = continue_event_cb; | |
1083 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 1084 | tipc_reg_add_port(up_ptr); |
b97bf3fd PL |
1085 | *portref = p_ptr->publ.ref; |
1086 | dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref); | |
4323add6 | 1087 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1088 | return TIPC_OK; |
1089 | } | |
1090 | ||
1091 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) | |
1092 | { | |
1093 | id->ref = ref; | |
1094 | id->node = tipc_own_addr; | |
1095 | return TIPC_OK; | |
1096 | } | |
1097 | ||
1098 | int tipc_portimportance(u32 ref, unsigned int *importance) | |
1099 | { | |
1100 | struct port *p_ptr; | |
1101 | ||
4323add6 | 1102 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1103 | if (!p_ptr) |
1104 | return -EINVAL; | |
1105 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
1106 | spin_unlock_bh(p_ptr->publ.lock); | |
1107 | return TIPC_OK; | |
1108 | } | |
1109 | ||
1110 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
1111 | { | |
1112 | struct port *p_ptr; | |
1113 | ||
1114 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1115 | return -EINVAL; | |
1116 | ||
4323add6 | 1117 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1118 | if (!p_ptr) |
1119 | return -EINVAL; | |
1120 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
1121 | spin_unlock_bh(p_ptr->publ.lock); | |
1122 | return TIPC_OK; | |
1123 | } | |
1124 | ||
1125 | ||
1126 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1127 | { | |
1128 | struct port *p_ptr; | |
1129 | struct publication *publ; | |
1130 | u32 key; | |
1131 | int res = -EINVAL; | |
1132 | ||
4323add6 | 1133 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1134 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1135 | "lower = %u, upper = %u\n", | |
1136 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
1137 | if (!p_ptr) | |
1138 | return -EINVAL; | |
1139 | if (p_ptr->publ.connected) | |
1140 | goto exit; | |
1141 | if (seq->lower > seq->upper) | |
1142 | goto exit; | |
1143 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1144 | goto exit; | |
1145 | key = ref + p_ptr->pub_count + 1; | |
1146 | if (key == ref) { | |
1147 | res = -EADDRINUSE; | |
1148 | goto exit; | |
1149 | } | |
4323add6 PL |
1150 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1151 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1152 | if (publ) { |
1153 | list_add(&publ->pport_list, &p_ptr->publications); | |
1154 | p_ptr->pub_count++; | |
1155 | p_ptr->publ.published = 1; | |
1156 | res = TIPC_OK; | |
1157 | } | |
1158 | exit: | |
4323add6 | 1159 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1160 | return res; |
1161 | } | |
1162 | ||
1163 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1164 | { | |
1165 | struct port *p_ptr; | |
1166 | struct publication *publ; | |
1167 | struct publication *tpubl; | |
1168 | int res = -EINVAL; | |
1169 | ||
4323add6 | 1170 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1171 | if (!p_ptr) |
1172 | return -EINVAL; | |
b97bf3fd PL |
1173 | if (!seq) { |
1174 | list_for_each_entry_safe(publ, tpubl, | |
1175 | &p_ptr->publications, pport_list) { | |
4323add6 PL |
1176 | tipc_nametbl_withdraw(publ->type, publ->lower, |
1177 | publ->ref, publ->key); | |
b97bf3fd PL |
1178 | } |
1179 | res = TIPC_OK; | |
1180 | } else { | |
1181 | list_for_each_entry_safe(publ, tpubl, | |
1182 | &p_ptr->publications, pport_list) { | |
1183 | if (publ->scope != scope) | |
1184 | continue; | |
1185 | if (publ->type != seq->type) | |
1186 | continue; | |
1187 | if (publ->lower != seq->lower) | |
1188 | continue; | |
1189 | if (publ->upper != seq->upper) | |
1190 | break; | |
4323add6 PL |
1191 | tipc_nametbl_withdraw(publ->type, publ->lower, |
1192 | publ->ref, publ->key); | |
b97bf3fd PL |
1193 | res = TIPC_OK; |
1194 | break; | |
1195 | } | |
1196 | } | |
1197 | if (list_empty(&p_ptr->publications)) | |
1198 | p_ptr->publ.published = 0; | |
4323add6 | 1199 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1200 | return res; |
1201 | } | |
1202 | ||
1203 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1204 | { | |
1205 | struct port *p_ptr; | |
1206 | struct tipc_msg *msg; | |
1207 | int res = -EINVAL; | |
1208 | ||
4323add6 | 1209 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1210 | if (!p_ptr) |
1211 | return -EINVAL; | |
1212 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1213 | goto exit; | |
1214 | if (!peer->ref) | |
1215 | goto exit; | |
1216 | ||
1217 | msg = &p_ptr->publ.phdr; | |
1218 | msg_set_destnode(msg, peer->node); | |
1219 | msg_set_destport(msg, peer->ref); | |
1220 | msg_set_orignode(msg, tipc_own_addr); | |
1221 | msg_set_origport(msg, p_ptr->publ.ref); | |
1222 | msg_set_transp_seqno(msg, 42); | |
1223 | msg_set_type(msg, TIPC_CONN_MSG); | |
1224 | if (!may_route(peer->node)) | |
1225 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1226 | else | |
1227 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1228 | ||
1229 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1230 | p_ptr->probing_state = CONFIRMED; | |
1231 | p_ptr->publ.connected = 1; | |
1232 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1233 | ||
4323add6 | 1234 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1235 | (void *)(unsigned long)ref, |
b97bf3fd PL |
1236 | (net_ev_handler)port_handle_node_down); |
1237 | res = TIPC_OK; | |
1238 | exit: | |
4323add6 PL |
1239 | tipc_port_unlock(p_ptr); |
1240 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); | |
b97bf3fd PL |
1241 | return res; |
1242 | } | |
1243 | ||
1244 | /* | |
1245 | * tipc_disconnect(): Disconnect port form peer. | |
1246 | * This is a node local operation. | |
1247 | */ | |
1248 | ||
1249 | int tipc_disconnect(u32 ref) | |
1250 | { | |
1251 | struct port *p_ptr; | |
1252 | int res = -ENOTCONN; | |
1253 | ||
4323add6 | 1254 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1255 | if (!p_ptr) |
1256 | return -EINVAL; | |
1257 | if (p_ptr->publ.connected) { | |
1258 | p_ptr->publ.connected = 0; | |
1259 | /* let timer expire on it's own to avoid deadlock! */ | |
4323add6 | 1260 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
1261 | res = TIPC_OK; |
1262 | } | |
4323add6 | 1263 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1264 | return res; |
1265 | } | |
1266 | ||
1267 | /* | |
1268 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1269 | */ | |
1270 | int tipc_shutdown(u32 ref) | |
1271 | { | |
1272 | struct port *p_ptr; | |
1fc54d8f | 1273 | struct sk_buff *buf = NULL; |
b97bf3fd | 1274 | |
4323add6 | 1275 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1276 | if (!p_ptr) |
1277 | return -EINVAL; | |
1278 | ||
1279 | if (p_ptr->publ.connected) { | |
1280 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1281 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1282 | imp++; | |
1283 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1284 | port_peernode(p_ptr), | |
1285 | ref, | |
1286 | tipc_own_addr, | |
1287 | imp, | |
1288 | TIPC_CONN_MSG, | |
1289 | TIPC_CONN_SHUTDOWN, | |
1290 | port_out_seqno(p_ptr), | |
1291 | 0); | |
1292 | } | |
4323add6 PL |
1293 | tipc_port_unlock(p_ptr); |
1294 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1295 | return tipc_disconnect(ref); |
1296 | } | |
1297 | ||
1298 | int tipc_isconnected(u32 ref, int *isconnected) | |
1299 | { | |
1300 | struct port *p_ptr; | |
1301 | ||
4323add6 | 1302 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1303 | if (!p_ptr) |
1304 | return -EINVAL; | |
1305 | *isconnected = p_ptr->publ.connected; | |
4323add6 | 1306 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1307 | return TIPC_OK; |
1308 | } | |
1309 | ||
1310 | int tipc_peer(u32 ref, struct tipc_portid *peer) | |
1311 | { | |
1312 | struct port *p_ptr; | |
1313 | int res; | |
1314 | ||
4323add6 | 1315 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1316 | if (!p_ptr) |
1317 | return -EINVAL; | |
1318 | if (p_ptr->publ.connected) { | |
1319 | peer->ref = port_peerport(p_ptr); | |
1320 | peer->node = port_peernode(p_ptr); | |
1321 | res = TIPC_OK; | |
1322 | } else | |
1323 | res = -ENOTCONN; | |
4323add6 | 1324 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1325 | return res; |
1326 | } | |
1327 | ||
1328 | int tipc_ref_valid(u32 ref) | |
1329 | { | |
1330 | /* Works irrespective of type */ | |
4323add6 | 1331 | return !!tipc_ref_deref(ref); |
b97bf3fd PL |
1332 | } |
1333 | ||
1334 | ||
1335 | /* | |
4323add6 | 1336 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1337 | * message for this node. |
1338 | */ | |
1339 | ||
4323add6 | 1340 | int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
b97bf3fd PL |
1341 | struct iovec const *msg_sect) |
1342 | { | |
1343 | struct sk_buff *buf; | |
1344 | int res; | |
1345 | ||
1346 | res = msg_build(&sender->publ.phdr, msg_sect, num_sect, | |
1347 | MAX_MSG_SIZE, !sender->user_port, &buf); | |
1348 | if (likely(buf)) | |
4323add6 | 1349 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1350 | return res; |
1351 | } | |
1352 | ||
1353 | /** | |
1354 | * tipc_send - send message sections on connection | |
1355 | */ | |
1356 | ||
1357 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1358 | { | |
1359 | struct port *p_ptr; | |
1360 | u32 destnode; | |
1361 | int res; | |
1362 | ||
4323add6 | 1363 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1364 | if (!p_ptr || !p_ptr->publ.connected) |
1365 | return -EINVAL; | |
1366 | ||
1367 | p_ptr->publ.congested = 1; | |
4323add6 | 1368 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1369 | destnode = port_peernode(p_ptr); |
1370 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1371 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1372 | destnode); | |
b97bf3fd | 1373 | else |
4323add6 | 1374 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1375 | |
1376 | if (likely(res != -ELINKCONG)) { | |
1377 | port_incr_out_seqno(p_ptr); | |
1378 | p_ptr->publ.congested = 0; | |
1379 | p_ptr->sent++; | |
1380 | return res; | |
1381 | } | |
1382 | } | |
1383 | if (port_unreliable(p_ptr)) { | |
1384 | p_ptr->publ.congested = 0; | |
1385 | /* Just calculate msg length and return */ | |
1386 | return msg_calc_data_size(msg_sect, num_sect); | |
1387 | } | |
1388 | return -ELINKCONG; | |
1389 | } | |
1390 | ||
1391 | /** | |
1392 | * tipc_send_buf - send message buffer on connection | |
1393 | */ | |
1394 | ||
1395 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) | |
1396 | { | |
1397 | struct port *p_ptr; | |
1398 | struct tipc_msg *msg; | |
1399 | u32 destnode; | |
1400 | u32 hsz; | |
1401 | u32 sz; | |
1402 | u32 res; | |
1403 | ||
4323add6 | 1404 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1405 | if (!p_ptr || !p_ptr->publ.connected) |
1406 | return -EINVAL; | |
1407 | ||
1408 | msg = &p_ptr->publ.phdr; | |
1409 | hsz = msg_hdr_sz(msg); | |
1410 | sz = hsz + dsz; | |
1411 | msg_set_size(msg, sz); | |
1412 | if (skb_cow(buf, hsz)) | |
1413 | return -ENOMEM; | |
1414 | ||
1415 | skb_push(buf, hsz); | |
1416 | memcpy(buf->data, (unchar *)msg, hsz); | |
1417 | destnode = msg_destnode(msg); | |
1418 | p_ptr->publ.congested = 1; | |
4323add6 | 1419 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1420 | if (likely(destnode != tipc_own_addr)) |
1421 | res = tipc_send_buf_fast(buf, destnode); | |
1422 | else { | |
4323add6 | 1423 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1424 | res = sz; |
1425 | } | |
1426 | if (likely(res != -ELINKCONG)) { | |
1427 | port_incr_out_seqno(p_ptr); | |
1428 | p_ptr->sent++; | |
1429 | p_ptr->publ.congested = 0; | |
1430 | return res; | |
1431 | } | |
1432 | } | |
1433 | if (port_unreliable(p_ptr)) { | |
1434 | p_ptr->publ.congested = 0; | |
1435 | return dsz; | |
1436 | } | |
1437 | return -ELINKCONG; | |
1438 | } | |
1439 | ||
1440 | /** | |
1441 | * tipc_forward2name - forward message sections to port name | |
1442 | */ | |
1443 | ||
1444 | int tipc_forward2name(u32 ref, | |
1445 | struct tipc_name const *name, | |
1446 | u32 domain, | |
1447 | u32 num_sect, | |
1448 | struct iovec const *msg_sect, | |
1449 | struct tipc_portid const *orig, | |
1450 | unsigned int importance) | |
1451 | { | |
1452 | struct port *p_ptr; | |
1453 | struct tipc_msg *msg; | |
1454 | u32 destnode = domain; | |
1455 | u32 destport = 0; | |
1456 | int res; | |
1457 | ||
4323add6 | 1458 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1459 | if (!p_ptr || p_ptr->publ.connected) |
1460 | return -EINVAL; | |
1461 | ||
1462 | msg = &p_ptr->publ.phdr; | |
1463 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1464 | msg_set_orignode(msg, orig->node); | |
1465 | msg_set_origport(msg, orig->ref); | |
1466 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1467 | msg_set_nametype(msg, name->type); | |
1468 | msg_set_nameinst(msg, name->instance); | |
1469 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1470 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1471 | msg_set_importance(msg,importance); | |
4323add6 | 1472 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1473 | msg_set_destnode(msg, destnode); |
1474 | msg_set_destport(msg, destport); | |
1475 | ||
1476 | if (likely(destport || destnode)) { | |
1477 | p_ptr->sent++; | |
1478 | if (likely(destnode == tipc_own_addr)) | |
4323add6 PL |
1479 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1480 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, | |
1481 | destnode); | |
b97bf3fd PL |
1482 | if (likely(res != -ELINKCONG)) |
1483 | return res; | |
1484 | if (port_unreliable(p_ptr)) { | |
1485 | /* Just calculate msg length and return */ | |
1486 | return msg_calc_data_size(msg_sect, num_sect); | |
1487 | } | |
1488 | return -ELINKCONG; | |
1489 | } | |
4323add6 PL |
1490 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
1491 | TIPC_ERR_NO_NAME); | |
b97bf3fd PL |
1492 | } |
1493 | ||
1494 | /** | |
1495 | * tipc_send2name - send message sections to port name | |
1496 | */ | |
1497 | ||
1498 | int tipc_send2name(u32 ref, | |
1499 | struct tipc_name const *name, | |
1500 | unsigned int domain, | |
1501 | unsigned int num_sect, | |
1502 | struct iovec const *msg_sect) | |
1503 | { | |
1504 | struct tipc_portid orig; | |
1505 | ||
1506 | orig.ref = ref; | |
1507 | orig.node = tipc_own_addr; | |
1508 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | |
1509 | TIPC_PORT_IMPORTANCE); | |
1510 | } | |
1511 | ||
1512 | /** | |
1513 | * tipc_forward_buf2name - forward message buffer to port name | |
1514 | */ | |
1515 | ||
1516 | int tipc_forward_buf2name(u32 ref, | |
1517 | struct tipc_name const *name, | |
1518 | u32 domain, | |
1519 | struct sk_buff *buf, | |
1520 | unsigned int dsz, | |
1521 | struct tipc_portid const *orig, | |
1522 | unsigned int importance) | |
1523 | { | |
1524 | struct port *p_ptr; | |
1525 | struct tipc_msg *msg; | |
1526 | u32 destnode = domain; | |
1527 | u32 destport = 0; | |
1528 | int res; | |
1529 | ||
4323add6 | 1530 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1531 | if (!p_ptr || p_ptr->publ.connected) |
1532 | return -EINVAL; | |
1533 | ||
1534 | msg = &p_ptr->publ.phdr; | |
1535 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1536 | msg_set_importance(msg, importance); | |
1537 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1538 | msg_set_orignode(msg, orig->node); | |
1539 | msg_set_origport(msg, orig->ref); | |
1540 | msg_set_nametype(msg, name->type); | |
1541 | msg_set_nameinst(msg, name->instance); | |
1542 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1543 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1544 | msg_set_size(msg, LONG_H_SIZE + dsz); | |
4323add6 | 1545 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1546 | msg_set_destnode(msg, destnode); |
1547 | msg_set_destport(msg, destport); | |
1548 | msg_dbg(msg, "forw2name ==> "); | |
1549 | if (skb_cow(buf, LONG_H_SIZE)) | |
1550 | return -ENOMEM; | |
1551 | skb_push(buf, LONG_H_SIZE); | |
1552 | memcpy(buf->data, (unchar *)msg, LONG_H_SIZE); | |
1553 | msg_dbg(buf_msg(buf),"PREP:"); | |
1554 | if (likely(destport || destnode)) { | |
1555 | p_ptr->sent++; | |
1556 | if (destnode == tipc_own_addr) | |
4323add6 | 1557 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1558 | res = tipc_send_buf_fast(buf, destnode); |
1559 | if (likely(res != -ELINKCONG)) | |
1560 | return res; | |
1561 | if (port_unreliable(p_ptr)) | |
1562 | return dsz; | |
1563 | return -ELINKCONG; | |
1564 | } | |
1565 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); | |
1566 | } | |
1567 | ||
1568 | /** | |
1569 | * tipc_send_buf2name - send message buffer to port name | |
1570 | */ | |
1571 | ||
1572 | int tipc_send_buf2name(u32 ref, | |
1573 | struct tipc_name const *dest, | |
1574 | u32 domain, | |
1575 | struct sk_buff *buf, | |
1576 | unsigned int dsz) | |
1577 | { | |
1578 | struct tipc_portid orig; | |
1579 | ||
1580 | orig.ref = ref; | |
1581 | orig.node = tipc_own_addr; | |
1582 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, | |
1583 | TIPC_PORT_IMPORTANCE); | |
1584 | } | |
1585 | ||
1586 | /** | |
1587 | * tipc_forward2port - forward message sections to port identity | |
1588 | */ | |
1589 | ||
1590 | int tipc_forward2port(u32 ref, | |
1591 | struct tipc_portid const *dest, | |
1592 | unsigned int num_sect, | |
1593 | struct iovec const *msg_sect, | |
1594 | struct tipc_portid const *orig, | |
1595 | unsigned int importance) | |
1596 | { | |
1597 | struct port *p_ptr; | |
1598 | struct tipc_msg *msg; | |
1599 | int res; | |
1600 | ||
4323add6 | 1601 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1602 | if (!p_ptr || p_ptr->publ.connected) |
1603 | return -EINVAL; | |
1604 | ||
1605 | msg = &p_ptr->publ.phdr; | |
1606 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1607 | msg_set_orignode(msg, orig->node); | |
1608 | msg_set_origport(msg, orig->ref); | |
1609 | msg_set_destnode(msg, dest->node); | |
1610 | msg_set_destport(msg, dest->ref); | |
1611 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1612 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1613 | msg_set_importance(msg, importance); | |
1614 | p_ptr->sent++; | |
1615 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1616 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1617 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1618 | if (likely(res != -ELINKCONG)) |
1619 | return res; | |
1620 | if (port_unreliable(p_ptr)) { | |
1621 | /* Just calculate msg length and return */ | |
1622 | return msg_calc_data_size(msg_sect, num_sect); | |
1623 | } | |
1624 | return -ELINKCONG; | |
1625 | } | |
1626 | ||
1627 | /** | |
1628 | * tipc_send2port - send message sections to port identity | |
1629 | */ | |
1630 | ||
1631 | int tipc_send2port(u32 ref, | |
1632 | struct tipc_portid const *dest, | |
1633 | unsigned int num_sect, | |
1634 | struct iovec const *msg_sect) | |
1635 | { | |
1636 | struct tipc_portid orig; | |
1637 | ||
1638 | orig.ref = ref; | |
1639 | orig.node = tipc_own_addr; | |
1640 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, | |
1641 | TIPC_PORT_IMPORTANCE); | |
1642 | } | |
1643 | ||
1644 | /** | |
1645 | * tipc_forward_buf2port - forward message buffer to port identity | |
1646 | */ | |
1647 | int tipc_forward_buf2port(u32 ref, | |
1648 | struct tipc_portid const *dest, | |
1649 | struct sk_buff *buf, | |
1650 | unsigned int dsz, | |
1651 | struct tipc_portid const *orig, | |
1652 | unsigned int importance) | |
1653 | { | |
1654 | struct port *p_ptr; | |
1655 | struct tipc_msg *msg; | |
1656 | int res; | |
1657 | ||
4323add6 | 1658 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1659 | if (!p_ptr || p_ptr->publ.connected) |
1660 | return -EINVAL; | |
1661 | ||
1662 | msg = &p_ptr->publ.phdr; | |
1663 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1664 | msg_set_orignode(msg, orig->node); | |
1665 | msg_set_origport(msg, orig->ref); | |
1666 | msg_set_destnode(msg, dest->node); | |
1667 | msg_set_destport(msg, dest->ref); | |
1668 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1669 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1670 | msg_set_importance(msg, importance); | |
1671 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | |
1672 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1673 | return -ENOMEM; | |
1674 | ||
1675 | skb_push(buf, DIR_MSG_H_SIZE); | |
1676 | memcpy(buf->data, (unchar *)msg, DIR_MSG_H_SIZE); | |
1677 | msg_dbg(msg, "buf2port: "); | |
1678 | p_ptr->sent++; | |
1679 | if (dest->node == tipc_own_addr) | |
4323add6 | 1680 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1681 | res = tipc_send_buf_fast(buf, dest->node); |
1682 | if (likely(res != -ELINKCONG)) | |
1683 | return res; | |
1684 | if (port_unreliable(p_ptr)) | |
1685 | return dsz; | |
1686 | return -ELINKCONG; | |
1687 | } | |
1688 | ||
1689 | /** | |
1690 | * tipc_send_buf2port - send message buffer to port identity | |
1691 | */ | |
1692 | ||
1693 | int tipc_send_buf2port(u32 ref, | |
1694 | struct tipc_portid const *dest, | |
1695 | struct sk_buff *buf, | |
1696 | unsigned int dsz) | |
1697 | { | |
1698 | struct tipc_portid orig; | |
1699 | ||
1700 | orig.ref = ref; | |
1701 | orig.node = tipc_own_addr; | |
1702 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, | |
1703 | TIPC_PORT_IMPORTANCE); | |
1704 | } | |
1705 |