diff options
Diffstat (limited to 'net/tipc/port.c')
-rw-r--r-- | net/tipc/port.c | 1708 |
1 files changed, 1708 insertions, 0 deletions
diff --git a/net/tipc/port.c b/net/tipc/port.c new file mode 100644 index 000000000000..66caca7abe92 --- /dev/null +++ b/net/tipc/port.c | |||
@@ -0,0 +1,1708 @@ | |||
1 | /* | ||
2 | * net/tipc/port.c: TIPC port code | ||
3 | * | ||
4 | * Copyright (c) 1992-2006, Ericsson AB | ||
5 | * Copyright (c) 2004-2005, Wind River Systems | ||
6 | * All rights reserved. | ||
7 | * | ||
8 | * Redistribution and use in source and binary forms, with or without | ||
9 | * modification, are permitted provided that the following conditions are met: | ||
10 | * | ||
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. | ||
19 | * | ||
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 | ||
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 | |||
57 | static struct sk_buff *msg_queue_head = 0; | ||
58 | static struct sk_buff *msg_queue_tail = 0; | ||
59 | |||
60 | spinlock_t port_list_lock = SPIN_LOCK_UNLOCKED; | ||
61 | static spinlock_t queue_lock = SPIN_LOCK_UNLOCKED; | ||
62 | |||
63 | LIST_HEAD(ports); | ||
64 | static void port_handle_node_down(unsigned long ref); | ||
65 | static struct sk_buff* port_build_self_abort_msg(struct port *,u32 err); | ||
66 | static struct sk_buff* port_build_peer_abort_msg(struct port *,u32 err); | ||
67 | static void port_timeout(unsigned long ref); | ||
68 | |||
69 | |||
70 | static inline u32 port_peernode(struct port *p_ptr) | ||
71 | { | ||
72 | return msg_destnode(&p_ptr->publ.phdr); | ||
73 | } | ||
74 | |||
75 | static inline u32 port_peerport(struct port *p_ptr) | ||
76 | { | ||
77 | return msg_destport(&p_ptr->publ.phdr); | ||
78 | } | ||
79 | |||
80 | static inline u32 port_out_seqno(struct port *p_ptr) | ||
81 | { | ||
82 | return msg_transp_seqno(&p_ptr->publ.phdr); | ||
83 | } | ||
84 | |||
85 | static inline void port_set_out_seqno(struct port *p_ptr, u32 seqno) | ||
86 | { | ||
87 | msg_set_transp_seqno(&p_ptr->publ.phdr,seqno); | ||
88 | } | ||
89 | |||
90 | static inline void port_incr_out_seqno(struct port *p_ptr) | ||
91 | { | ||
92 | struct tipc_msg *m = &p_ptr->publ.phdr; | ||
93 | |||
94 | if (likely(!msg_routed(m))) | ||
95 | return; | ||
96 | msg_set_transp_seqno(m, (msg_transp_seqno(m) + 1)); | ||
97 | } | ||
98 | |||
99 | /** | ||
100 | * tipc_multicast - send a multicast message to local and remote destinations | ||
101 | */ | ||
102 | |||
103 | int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, u32 domain, | ||
104 | u32 num_sect, struct iovec const *msg_sect) | ||
105 | { | ||
106 | struct tipc_msg *hdr; | ||
107 | struct sk_buff *buf; | ||
108 | struct sk_buff *ibuf = NULL; | ||
109 | struct port_list dports = {0, NULL, }; | ||
110 | struct port *oport = port_deref(ref); | ||
111 | int ext_targets; | ||
112 | int res; | ||
113 | |||
114 | if (unlikely(!oport)) | ||
115 | return -EINVAL; | ||
116 | |||
117 | /* Create multicast message */ | ||
118 | |||
119 | hdr = &oport->publ.phdr; | ||
120 | msg_set_type(hdr, TIPC_MCAST_MSG); | ||
121 | msg_set_nametype(hdr, seq->type); | ||
122 | msg_set_namelower(hdr, seq->lower); | ||
123 | msg_set_nameupper(hdr, seq->upper); | ||
124 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | ||
125 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, | ||
126 | !oport->user_port, &buf); | ||
127 | if (unlikely(!buf)) | ||
128 | return res; | ||
129 | |||
130 | /* Figure out where to send multicast message */ | ||
131 | |||
132 | ext_targets = nametbl_mc_translate(seq->type, seq->lower, seq->upper, | ||
133 | TIPC_NODE_SCOPE, &dports); | ||
134 | |||
135 | /* Send message to destinations (duplicate it only if necessary) */ | ||
136 | |||
137 | if (ext_targets) { | ||
138 | if (dports.count != 0) { | ||
139 | ibuf = skb_copy(buf, GFP_ATOMIC); | ||
140 | if (ibuf == NULL) { | ||
141 | port_list_free(&dports); | ||
142 | buf_discard(buf); | ||
143 | return -ENOMEM; | ||
144 | } | ||
145 | } | ||
146 | res = bclink_send_msg(buf); | ||
147 | if ((res < 0) && (dports.count != 0)) { | ||
148 | buf_discard(ibuf); | ||
149 | } | ||
150 | } else { | ||
151 | ibuf = buf; | ||
152 | } | ||
153 | |||
154 | if (res >= 0) { | ||
155 | if (ibuf) | ||
156 | port_recv_mcast(ibuf, &dports); | ||
157 | } else { | ||
158 | port_list_free(&dports); | ||
159 | } | ||
160 | return res; | ||
161 | } | ||
162 | |||
163 | /** | ||
164 | * port_recv_mcast - deliver multicast message to all destination ports | ||
165 | * | ||
166 | * If there is no port list, perform a lookup to create one | ||
167 | */ | ||
168 | |||
169 | void port_recv_mcast(struct sk_buff *buf, struct port_list *dp) | ||
170 | { | ||
171 | struct tipc_msg* msg; | ||
172 | struct port_list dports = {0, NULL, }; | ||
173 | struct port_list *item = dp; | ||
174 | int cnt = 0; | ||
175 | |||
176 | assert(buf); | ||
177 | msg = buf_msg(buf); | ||
178 | |||
179 | /* Create destination port list, if one wasn't supplied */ | ||
180 | |||
181 | if (dp == NULL) { | ||
182 | nametbl_mc_translate(msg_nametype(msg), | ||
183 | msg_namelower(msg), | ||
184 | msg_nameupper(msg), | ||
185 | TIPC_CLUSTER_SCOPE, | ||
186 | &dports); | ||
187 | item = dp = &dports; | ||
188 | } | ||
189 | |||
190 | /* Deliver a copy of message to each destination port */ | ||
191 | |||
192 | if (dp->count != 0) { | ||
193 | if (dp->count == 1) { | ||
194 | msg_set_destport(msg, dp->ports[0]); | ||
195 | port_recv_msg(buf); | ||
196 | port_list_free(dp); | ||
197 | return; | ||
198 | } | ||
199 | for (; cnt < dp->count; cnt++) { | ||
200 | int index = cnt % PLSIZE; | ||
201 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | ||
202 | |||
203 | if (b == NULL) { | ||
204 | warn("Buffer allocation failure\n"); | ||
205 | msg_dbg(msg, "LOST:"); | ||
206 | goto exit; | ||
207 | } | ||
208 | if ((index == 0) && (cnt != 0)) { | ||
209 | item = item->next; | ||
210 | } | ||
211 | msg_set_destport(buf_msg(b),item->ports[index]); | ||
212 | port_recv_msg(b); | ||
213 | } | ||
214 | } | ||
215 | exit: | ||
216 | buf_discard(buf); | ||
217 | port_list_free(dp); | ||
218 | } | ||
219 | |||
220 | /** | ||
221 | * tipc_createport_raw - create a native TIPC port | ||
222 | * | ||
223 | * Returns local port reference | ||
224 | */ | ||
225 | |||
226 | u32 tipc_createport_raw(void *usr_handle, | ||
227 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), | ||
228 | void (*wakeup)(struct tipc_port *), | ||
229 | const u32 importance) | ||
230 | { | ||
231 | struct port *p_ptr; | ||
232 | struct tipc_msg *msg; | ||
233 | u32 ref; | ||
234 | |||
235 | p_ptr = kmalloc(sizeof(*p_ptr), GFP_ATOMIC); | ||
236 | if (p_ptr == NULL) { | ||
237 | warn("Memory squeeze; failed to create port\n"); | ||
238 | return 0; | ||
239 | } | ||
240 | memset(p_ptr, 0, sizeof(*p_ptr)); | ||
241 | ref = ref_acquire(p_ptr, &p_ptr->publ.lock); | ||
242 | if (!ref) { | ||
243 | warn("Reference Table Exhausted\n"); | ||
244 | kfree(p_ptr); | ||
245 | return 0; | ||
246 | } | ||
247 | |||
248 | port_lock(ref); | ||
249 | p_ptr->publ.ref = ref; | ||
250 | msg = &p_ptr->publ.phdr; | ||
251 | msg_init(msg, DATA_LOW, TIPC_NAMED_MSG, TIPC_OK, LONG_H_SIZE, 0); | ||
252 | msg_set_orignode(msg, tipc_own_addr); | ||
253 | msg_set_prevnode(msg, tipc_own_addr); | ||
254 | msg_set_origport(msg, ref); | ||
255 | msg_set_importance(msg,importance); | ||
256 | p_ptr->last_in_seqno = 41; | ||
257 | p_ptr->sent = 1; | ||
258 | p_ptr->publ.usr_handle = usr_handle; | ||
259 | INIT_LIST_HEAD(&p_ptr->wait_list); | ||
260 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | ||
261 | p_ptr->congested_link = 0; | ||
262 | p_ptr->max_pkt = MAX_PKT_DEFAULT; | ||
263 | p_ptr->dispatcher = dispatcher; | ||
264 | p_ptr->wakeup = wakeup; | ||
265 | p_ptr->user_port = 0; | ||
266 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); | ||
267 | spin_lock_bh(&port_list_lock); | ||
268 | INIT_LIST_HEAD(&p_ptr->publications); | ||
269 | INIT_LIST_HEAD(&p_ptr->port_list); | ||
270 | list_add_tail(&p_ptr->port_list, &ports); | ||
271 | spin_unlock_bh(&port_list_lock); | ||
272 | port_unlock(p_ptr); | ||
273 | return ref; | ||
274 | } | ||
275 | |||
276 | int tipc_deleteport(u32 ref) | ||
277 | { | ||
278 | struct port *p_ptr; | ||
279 | struct sk_buff *buf = 0; | ||
280 | |||
281 | tipc_withdraw(ref, 0, 0); | ||
282 | p_ptr = port_lock(ref); | ||
283 | if (!p_ptr) | ||
284 | return -EINVAL; | ||
285 | |||
286 | ref_discard(ref); | ||
287 | port_unlock(p_ptr); | ||
288 | |||
289 | k_cancel_timer(&p_ptr->timer); | ||
290 | if (p_ptr->publ.connected) { | ||
291 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | ||
292 | nodesub_unsubscribe(&p_ptr->subscription); | ||
293 | } | ||
294 | if (p_ptr->user_port) { | ||
295 | reg_remove_port(p_ptr->user_port); | ||
296 | kfree(p_ptr->user_port); | ||
297 | } | ||
298 | |||
299 | spin_lock_bh(&port_list_lock); | ||
300 | list_del(&p_ptr->port_list); | ||
301 | list_del(&p_ptr->wait_list); | ||
302 | spin_unlock_bh(&port_list_lock); | ||
303 | k_term_timer(&p_ptr->timer); | ||
304 | kfree(p_ptr); | ||
305 | dbg("Deleted port %u\n", ref); | ||
306 | net_route_msg(buf); | ||
307 | return TIPC_OK; | ||
308 | } | ||
309 | |||
310 | /** | ||
311 | * tipc_get_port() - return port associated with 'ref' | ||
312 | * | ||
313 | * Note: Port is not locked. | ||
314 | */ | ||
315 | |||
316 | struct tipc_port *tipc_get_port(const u32 ref) | ||
317 | { | ||
318 | return (struct tipc_port *)ref_deref(ref); | ||
319 | } | ||
320 | |||
321 | /** | ||
322 | * tipc_get_handle - return user handle associated to port 'ref' | ||
323 | */ | ||
324 | |||
325 | void *tipc_get_handle(const u32 ref) | ||
326 | { | ||
327 | struct port *p_ptr; | ||
328 | void * handle; | ||
329 | |||
330 | p_ptr = port_lock(ref); | ||
331 | if (!p_ptr) | ||
332 | return 0; | ||
333 | handle = p_ptr->publ.usr_handle; | ||
334 | port_unlock(p_ptr); | ||
335 | return handle; | ||
336 | } | ||
337 | |||
338 | static inline int port_unreliable(struct port *p_ptr) | ||
339 | { | ||
340 | return msg_src_droppable(&p_ptr->publ.phdr); | ||
341 | } | ||
342 | |||
343 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | ||
344 | { | ||
345 | struct port *p_ptr; | ||
346 | |||
347 | p_ptr = port_lock(ref); | ||
348 | if (!p_ptr) | ||
349 | return -EINVAL; | ||
350 | *isunreliable = port_unreliable(p_ptr); | ||
351 | spin_unlock_bh(p_ptr->publ.lock); | ||
352 | return TIPC_OK; | ||
353 | } | ||
354 | |||
355 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | ||
356 | { | ||
357 | struct port *p_ptr; | ||
358 | |||
359 | p_ptr = port_lock(ref); | ||
360 | if (!p_ptr) | ||
361 | return -EINVAL; | ||
362 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | ||
363 | port_unlock(p_ptr); | ||
364 | return TIPC_OK; | ||
365 | } | ||
366 | |||
367 | static inline int port_unreturnable(struct port *p_ptr) | ||
368 | { | ||
369 | return msg_dest_droppable(&p_ptr->publ.phdr); | ||
370 | } | ||
371 | |||
372 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | ||
373 | { | ||
374 | struct port *p_ptr; | ||
375 | |||
376 | p_ptr = port_lock(ref); | ||
377 | if (!p_ptr) | ||
378 | return -EINVAL; | ||
379 | *isunrejectable = port_unreturnable(p_ptr); | ||
380 | spin_unlock_bh(p_ptr->publ.lock); | ||
381 | return TIPC_OK; | ||
382 | } | ||
383 | |||
384 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | ||
385 | { | ||
386 | struct port *p_ptr; | ||
387 | |||
388 | p_ptr = port_lock(ref); | ||
389 | if (!p_ptr) | ||
390 | return -EINVAL; | ||
391 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | ||
392 | port_unlock(p_ptr); | ||
393 | return TIPC_OK; | ||
394 | } | ||
395 | |||
396 | /* | ||
397 | * port_build_proto_msg(): build a port level protocol | ||
398 | * or a connection abortion message. Called with | ||
399 | * tipc_port lock on. | ||
400 | */ | ||
401 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | ||
402 | u32 origport, u32 orignode, | ||
403 | u32 usr, u32 type, u32 err, | ||
404 | u32 seqno, u32 ack) | ||
405 | { | ||
406 | struct sk_buff *buf; | ||
407 | struct tipc_msg *msg; | ||
408 | |||
409 | buf = buf_acquire(LONG_H_SIZE); | ||
410 | if (buf) { | ||
411 | msg = buf_msg(buf); | ||
412 | msg_init(msg, usr, type, err, LONG_H_SIZE, destnode); | ||
413 | msg_set_destport(msg, destport); | ||
414 | msg_set_origport(msg, origport); | ||
415 | msg_set_destnode(msg, destnode); | ||
416 | msg_set_orignode(msg, orignode); | ||
417 | msg_set_transp_seqno(msg, seqno); | ||
418 | msg_set_msgcnt(msg, ack); | ||
419 | msg_dbg(msg, "PORT>SEND>:"); | ||
420 | } | ||
421 | return buf; | ||
422 | } | ||
423 | |||
424 | int tipc_set_msg_option(struct tipc_port *tp_ptr, const char *opt, const u32 sz) | ||
425 | { | ||
426 | msg_expand(&tp_ptr->phdr, msg_destnode(&tp_ptr->phdr)); | ||
427 | msg_set_options(&tp_ptr->phdr, opt, sz); | ||
428 | return TIPC_OK; | ||
429 | } | ||
430 | |||
431 | int tipc_reject_msg(struct sk_buff *buf, u32 err) | ||
432 | { | ||
433 | struct tipc_msg *msg = buf_msg(buf); | ||
434 | struct sk_buff *rbuf; | ||
435 | struct tipc_msg *rmsg; | ||
436 | int hdr_sz; | ||
437 | u32 imp = msg_importance(msg); | ||
438 | u32 data_sz = msg_data_sz(msg); | ||
439 | |||
440 | if (data_sz > MAX_REJECT_SIZE) | ||
441 | data_sz = MAX_REJECT_SIZE; | ||
442 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | ||
443 | imp++; | ||
444 | msg_dbg(msg, "port->rej: "); | ||
445 | |||
446 | /* discard rejected message if it shouldn't be returned to sender */ | ||
447 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | ||
448 | buf_discard(buf); | ||
449 | return data_sz; | ||
450 | } | ||
451 | |||
452 | /* construct rejected message */ | ||
453 | if (msg_mcast(msg)) | ||
454 | hdr_sz = MCAST_H_SIZE; | ||
455 | else | ||
456 | hdr_sz = LONG_H_SIZE; | ||
457 | rbuf = buf_acquire(data_sz + hdr_sz); | ||
458 | if (rbuf == NULL) { | ||
459 | buf_discard(buf); | ||
460 | return data_sz; | ||
461 | } | ||
462 | rmsg = buf_msg(rbuf); | ||
463 | msg_init(rmsg, imp, msg_type(msg), err, hdr_sz, msg_orignode(msg)); | ||
464 | msg_set_destport(rmsg, msg_origport(msg)); | ||
465 | msg_set_prevnode(rmsg, tipc_own_addr); | ||
466 | msg_set_origport(rmsg, msg_destport(msg)); | ||
467 | if (msg_short(msg)) | ||
468 | msg_set_orignode(rmsg, tipc_own_addr); | ||
469 | else | ||
470 | msg_set_orignode(rmsg, msg_destnode(msg)); | ||
471 | msg_set_size(rmsg, data_sz + hdr_sz); | ||
472 | msg_set_nametype(rmsg, msg_nametype(msg)); | ||
473 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | ||
474 | memcpy(rbuf->data + hdr_sz, msg_data(msg), data_sz); | ||
475 | |||
476 | /* send self-abort message when rejecting on a connected port */ | ||
477 | if (msg_connected(msg)) { | ||
478 | struct sk_buff *abuf = 0; | ||
479 | struct port *p_ptr = port_lock(msg_destport(msg)); | ||
480 | |||
481 | if (p_ptr) { | ||
482 | if (p_ptr->publ.connected) | ||
483 | abuf = port_build_self_abort_msg(p_ptr, err); | ||
484 | port_unlock(p_ptr); | ||
485 | } | ||
486 | net_route_msg(abuf); | ||
487 | } | ||
488 | |||
489 | /* send rejected message */ | ||
490 | buf_discard(buf); | ||
491 | net_route_msg(rbuf); | ||
492 | return data_sz; | ||
493 | } | ||
494 | |||
495 | int port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, | ||
496 | struct iovec const *msg_sect, u32 num_sect, | ||
497 | int err) | ||
498 | { | ||
499 | struct sk_buff *buf; | ||
500 | int res; | ||
501 | |||
502 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, | ||
503 | !p_ptr->user_port, &buf); | ||
504 | if (!buf) | ||
505 | return res; | ||
506 | |||
507 | return tipc_reject_msg(buf, err); | ||
508 | } | ||
509 | |||
510 | static void port_timeout(unsigned long ref) | ||
511 | { | ||
512 | struct port *p_ptr = port_lock(ref); | ||
513 | struct sk_buff *buf = 0; | ||
514 | |||
515 | if (!p_ptr || !p_ptr->publ.connected) | ||
516 | return; | ||
517 | |||
518 | /* Last probe answered ? */ | ||
519 | if (p_ptr->probing_state == PROBING) { | ||
520 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | ||
521 | } else { | ||
522 | buf = port_build_proto_msg(port_peerport(p_ptr), | ||
523 | port_peernode(p_ptr), | ||
524 | p_ptr->publ.ref, | ||
525 | tipc_own_addr, | ||
526 | CONN_MANAGER, | ||
527 | CONN_PROBE, | ||
528 | TIPC_OK, | ||
529 | port_out_seqno(p_ptr), | ||
530 | 0); | ||
531 | port_incr_out_seqno(p_ptr); | ||
532 | p_ptr->probing_state = PROBING; | ||
533 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | ||
534 | } | ||
535 | port_unlock(p_ptr); | ||
536 | net_route_msg(buf); | ||
537 | } | ||
538 | |||
539 | |||
540 | static void port_handle_node_down(unsigned long ref) | ||
541 | { | ||
542 | struct port *p_ptr = port_lock(ref); | ||
543 | struct sk_buff* buf = 0; | ||
544 | |||
545 | if (!p_ptr) | ||
546 | return; | ||
547 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | ||
548 | port_unlock(p_ptr); | ||
549 | net_route_msg(buf); | ||
550 | } | ||
551 | |||
552 | |||
553 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | ||
554 | { | ||
555 | u32 imp = msg_importance(&p_ptr->publ.phdr); | ||
556 | |||
557 | if (!p_ptr->publ.connected) | ||
558 | return 0; | ||
559 | if (imp < TIPC_CRITICAL_IMPORTANCE) | ||
560 | imp++; | ||
561 | return port_build_proto_msg(p_ptr->publ.ref, | ||
562 | tipc_own_addr, | ||
563 | port_peerport(p_ptr), | ||
564 | port_peernode(p_ptr), | ||
565 | imp, | ||
566 | TIPC_CONN_MSG, | ||
567 | err, | ||
568 | p_ptr->last_in_seqno + 1, | ||
569 | 0); | ||
570 | } | ||
571 | |||
572 | |||
573 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | ||
574 | { | ||
575 | u32 imp = msg_importance(&p_ptr->publ.phdr); | ||
576 | |||
577 | if (!p_ptr->publ.connected) | ||
578 | return 0; | ||
579 | if (imp < TIPC_CRITICAL_IMPORTANCE) | ||
580 | imp++; | ||
581 | return port_build_proto_msg(port_peerport(p_ptr), | ||
582 | port_peernode(p_ptr), | ||
583 | p_ptr->publ.ref, | ||
584 | tipc_own_addr, | ||
585 | imp, | ||
586 | TIPC_CONN_MSG, | ||
587 | err, | ||
588 | port_out_seqno(p_ptr), | ||
589 | 0); | ||
590 | } | ||
591 | |||
592 | void port_recv_proto_msg(struct sk_buff *buf) | ||
593 | { | ||
594 | struct tipc_msg *msg = buf_msg(buf); | ||
595 | struct port *p_ptr = port_lock(msg_destport(msg)); | ||
596 | u32 err = TIPC_OK; | ||
597 | struct sk_buff *r_buf = 0; | ||
598 | struct sk_buff *abort_buf = 0; | ||
599 | |||
600 | msg_dbg(msg, "PORT<RECV<:"); | ||
601 | |||
602 | if (!p_ptr) { | ||
603 | err = TIPC_ERR_NO_PORT; | ||
604 | } else if (p_ptr->publ.connected) { | ||
605 | if (port_peernode(p_ptr) != msg_orignode(msg)) | ||
606 | err = TIPC_ERR_NO_PORT; | ||
607 | if (port_peerport(p_ptr) != msg_origport(msg)) | ||
608 | err = TIPC_ERR_NO_PORT; | ||
609 | if (!err && msg_routed(msg)) { | ||
610 | u32 seqno = msg_transp_seqno(msg); | ||
611 | u32 myno = ++p_ptr->last_in_seqno; | ||
612 | if (seqno != myno) { | ||
613 | err = TIPC_ERR_NO_PORT; | ||
614 | abort_buf = port_build_self_abort_msg(p_ptr, err); | ||
615 | } | ||
616 | } | ||
617 | if (msg_type(msg) == CONN_ACK) { | ||
618 | int wakeup = port_congested(p_ptr) && | ||
619 | p_ptr->publ.congested && | ||
620 | p_ptr->wakeup; | ||
621 | p_ptr->acked += msg_msgcnt(msg); | ||
622 | if (port_congested(p_ptr)) | ||
623 | goto exit; | ||
624 | p_ptr->publ.congested = 0; | ||
625 | if (!wakeup) | ||
626 | goto exit; | ||
627 | p_ptr->wakeup(&p_ptr->publ); | ||
628 | goto exit; | ||
629 | } | ||
630 | } else if (p_ptr->publ.published) { | ||
631 | err = TIPC_ERR_NO_PORT; | ||
632 | } | ||
633 | if (err) { | ||
634 | r_buf = port_build_proto_msg(msg_origport(msg), | ||
635 | msg_orignode(msg), | ||
636 | msg_destport(msg), | ||
637 | tipc_own_addr, | ||
638 | DATA_HIGH, | ||
639 | TIPC_CONN_MSG, | ||
640 | err, | ||
641 | 0, | ||
642 | 0); | ||
643 | goto exit; | ||
644 | } | ||
645 | |||
646 | /* All is fine */ | ||
647 | if (msg_type(msg) == CONN_PROBE) { | ||
648 | r_buf = port_build_proto_msg(msg_origport(msg), | ||
649 | msg_orignode(msg), | ||
650 | msg_destport(msg), | ||
651 | tipc_own_addr, | ||
652 | CONN_MANAGER, | ||
653 | CONN_PROBE_REPLY, | ||
654 | TIPC_OK, | ||
655 | port_out_seqno(p_ptr), | ||
656 | 0); | ||
657 | } | ||
658 | p_ptr->probing_state = CONFIRMED; | ||
659 | port_incr_out_seqno(p_ptr); | ||
660 | exit: | ||
661 | if (p_ptr) | ||
662 | port_unlock(p_ptr); | ||
663 | net_route_msg(r_buf); | ||
664 | net_route_msg(abort_buf); | ||
665 | buf_discard(buf); | ||
666 | } | ||
667 | |||
668 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | ||
669 | { | ||
670 | struct publication *publ; | ||
671 | |||
672 | if (full_id) | ||
673 | tipc_printf(buf, "<%u.%u.%u:%u>:", | ||
674 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), | ||
675 | tipc_node(tipc_own_addr), p_ptr->publ.ref); | ||
676 | else | ||
677 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | ||
678 | |||
679 | if (p_ptr->publ.connected) { | ||
680 | u32 dport = port_peerport(p_ptr); | ||
681 | u32 destnode = port_peernode(p_ptr); | ||
682 | |||
683 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | ||
684 | tipc_zone(destnode), tipc_cluster(destnode), | ||
685 | tipc_node(destnode), dport); | ||
686 | if (p_ptr->publ.conn_type != 0) | ||
687 | tipc_printf(buf, " via {%u,%u}", | ||
688 | p_ptr->publ.conn_type, | ||
689 | p_ptr->publ.conn_instance); | ||
690 | } | ||
691 | else if (p_ptr->publ.published) { | ||
692 | tipc_printf(buf, " bound to"); | ||
693 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | ||
694 | if (publ->lower == publ->upper) | ||
695 | tipc_printf(buf, " {%u,%u}", publ->type, | ||
696 | publ->lower); | ||
697 | else | ||
698 | tipc_printf(buf, " {%u,%u,%u}", publ->type, | ||
699 | publ->lower, publ->upper); | ||
700 | } | ||
701 | } | ||
702 | tipc_printf(buf, "\n"); | ||
703 | } | ||
704 | |||
705 | #define MAX_PORT_QUERY 32768 | ||
706 | |||
707 | struct sk_buff *port_get_ports(void) | ||
708 | { | ||
709 | struct sk_buff *buf; | ||
710 | struct tlv_desc *rep_tlv; | ||
711 | struct print_buf pb; | ||
712 | struct port *p_ptr; | ||
713 | int str_len; | ||
714 | |||
715 | buf = cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); | ||
716 | if (!buf) | ||
717 | return NULL; | ||
718 | rep_tlv = (struct tlv_desc *)buf->data; | ||
719 | |||
720 | printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); | ||
721 | spin_lock_bh(&port_list_lock); | ||
722 | list_for_each_entry(p_ptr, &ports, port_list) { | ||
723 | spin_lock_bh(p_ptr->publ.lock); | ||
724 | port_print(p_ptr, &pb, 0); | ||
725 | spin_unlock_bh(p_ptr->publ.lock); | ||
726 | } | ||
727 | spin_unlock_bh(&port_list_lock); | ||
728 | str_len = printbuf_validate(&pb); | ||
729 | |||
730 | skb_put(buf, TLV_SPACE(str_len)); | ||
731 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | ||
732 | |||
733 | return buf; | ||
734 | } | ||
735 | |||
736 | #if 0 | ||
737 | |||
738 | #define MAX_PORT_STATS 2000 | ||
739 | |||
740 | struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) | ||
741 | { | ||
742 | u32 ref; | ||
743 | struct port *p_ptr; | ||
744 | struct sk_buff *buf; | ||
745 | struct tlv_desc *rep_tlv; | ||
746 | struct print_buf pb; | ||
747 | int str_len; | ||
748 | |||
749 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) | ||
750 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | ||
751 | |||
752 | ref = *(u32 *)TLV_DATA(req_tlv_area); | ||
753 | ref = ntohl(ref); | ||
754 | |||
755 | p_ptr = port_lock(ref); | ||
756 | if (!p_ptr) | ||
757 | return cfg_reply_error_string("port not found"); | ||
758 | |||
759 | buf = cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); | ||
760 | if (!buf) { | ||
761 | port_unlock(p_ptr); | ||
762 | return NULL; | ||
763 | } | ||
764 | rep_tlv = (struct tlv_desc *)buf->data; | ||
765 | |||
766 | printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); | ||
767 | port_print(p_ptr, &pb, 1); | ||
768 | /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ | ||
769 | port_unlock(p_ptr); | ||
770 | str_len = printbuf_validate(&pb); | ||
771 | |||
772 | skb_put(buf, TLV_SPACE(str_len)); | ||
773 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | ||
774 | |||
775 | return buf; | ||
776 | } | ||
777 | |||
778 | #endif | ||
779 | |||
780 | void port_reinit(void) | ||
781 | { | ||
782 | struct port *p_ptr; | ||
783 | struct tipc_msg *msg; | ||
784 | |||
785 | spin_lock_bh(&port_list_lock); | ||
786 | list_for_each_entry(p_ptr, &ports, port_list) { | ||
787 | msg = &p_ptr->publ.phdr; | ||
788 | if (msg_orignode(msg) == tipc_own_addr) | ||
789 | break; | ||
790 | msg_set_orignode(msg, tipc_own_addr); | ||
791 | } | ||
792 | spin_unlock_bh(&port_list_lock); | ||
793 | } | ||
794 | |||
795 | |||
796 | /* | ||
797 | * port_dispatcher_sigh(): Signal handler for messages destinated | ||
798 | * to the tipc_port interface. | ||
799 | */ | ||
800 | |||
801 | static void port_dispatcher_sigh(void *dummy) | ||
802 | { | ||
803 | struct sk_buff *buf; | ||
804 | |||
805 | spin_lock_bh(&queue_lock); | ||
806 | buf = msg_queue_head; | ||
807 | msg_queue_head = 0; | ||
808 | spin_unlock_bh(&queue_lock); | ||
809 | |||
810 | while (buf) { | ||
811 | struct port *p_ptr; | ||
812 | struct user_port *up_ptr; | ||
813 | struct tipc_portid orig; | ||
814 | struct tipc_name_seq dseq; | ||
815 | void *usr_handle; | ||
816 | int connected; | ||
817 | int published; | ||
818 | |||
819 | struct sk_buff *next = buf->next; | ||
820 | struct tipc_msg *msg = buf_msg(buf); | ||
821 | u32 dref = msg_destport(msg); | ||
822 | |||
823 | p_ptr = port_lock(dref); | ||
824 | if (!p_ptr) { | ||
825 | /* Port deleted while msg in queue */ | ||
826 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | ||
827 | buf = next; | ||
828 | continue; | ||
829 | } | ||
830 | orig.ref = msg_origport(msg); | ||
831 | orig.node = msg_orignode(msg); | ||
832 | up_ptr = p_ptr->user_port; | ||
833 | usr_handle = up_ptr->usr_handle; | ||
834 | connected = p_ptr->publ.connected; | ||
835 | published = p_ptr->publ.published; | ||
836 | |||
837 | if (unlikely(msg_errcode(msg))) | ||
838 | goto err; | ||
839 | |||
840 | switch (msg_type(msg)) { | ||
841 | |||
842 | case TIPC_CONN_MSG:{ | ||
843 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | ||
844 | u32 peer_port = port_peerport(p_ptr); | ||
845 | u32 peer_node = port_peernode(p_ptr); | ||
846 | |||
847 | spin_unlock_bh(p_ptr->publ.lock); | ||
848 | if (unlikely(!connected)) { | ||
849 | if (unlikely(published)) | ||
850 | goto reject; | ||
851 | tipc_connect2port(dref,&orig); | ||
852 | } | ||
853 | if (unlikely(msg_origport(msg) != peer_port)) | ||
854 | goto reject; | ||
855 | if (unlikely(msg_orignode(msg) != peer_node)) | ||
856 | goto reject; | ||
857 | if (unlikely(!cb)) | ||
858 | goto reject; | ||
859 | if (unlikely(++p_ptr->publ.conn_unacked >= | ||
860 | TIPC_FLOW_CONTROL_WIN)) | ||
861 | tipc_acknowledge(dref, | ||
862 | p_ptr->publ.conn_unacked); | ||
863 | skb_pull(buf, msg_hdr_sz(msg)); | ||
864 | cb(usr_handle, dref, &buf, msg_data(msg), | ||
865 | msg_data_sz(msg)); | ||
866 | break; | ||
867 | } | ||
868 | case TIPC_DIRECT_MSG:{ | ||
869 | tipc_msg_event cb = up_ptr->msg_cb; | ||
870 | |||
871 | spin_unlock_bh(p_ptr->publ.lock); | ||
872 | if (unlikely(connected)) | ||
873 | goto reject; | ||
874 | if (unlikely(!cb)) | ||
875 | goto reject; | ||
876 | skb_pull(buf, msg_hdr_sz(msg)); | ||
877 | cb(usr_handle, dref, &buf, msg_data(msg), | ||
878 | msg_data_sz(msg), msg_importance(msg), | ||
879 | &orig); | ||
880 | break; | ||
881 | } | ||
882 | case TIPC_NAMED_MSG:{ | ||
883 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | ||
884 | |||
885 | spin_unlock_bh(p_ptr->publ.lock); | ||
886 | if (unlikely(connected)) | ||
887 | goto reject; | ||
888 | if (unlikely(!cb)) | ||
889 | goto reject; | ||
890 | if (unlikely(!published)) | ||
891 | goto reject; | ||
892 | dseq.type = msg_nametype(msg); | ||
893 | dseq.lower = msg_nameinst(msg); | ||
894 | dseq.upper = dseq.lower; | ||
895 | skb_pull(buf, msg_hdr_sz(msg)); | ||
896 | cb(usr_handle, dref, &buf, msg_data(msg), | ||
897 | msg_data_sz(msg), msg_importance(msg), | ||
898 | &orig, &dseq); | ||
899 | break; | ||
900 | } | ||
901 | } | ||
902 | if (buf) | ||
903 | buf_discard(buf); | ||
904 | buf = next; | ||
905 | continue; | ||
906 | err: | ||
907 | switch (msg_type(msg)) { | ||
908 | |||
909 | case TIPC_CONN_MSG:{ | ||
910 | tipc_conn_shutdown_event cb = | ||
911 | up_ptr->conn_err_cb; | ||
912 | u32 peer_port = port_peerport(p_ptr); | ||
913 | u32 peer_node = port_peernode(p_ptr); | ||
914 | |||
915 | spin_unlock_bh(p_ptr->publ.lock); | ||
916 | if (!connected || !cb) | ||
917 | break; | ||
918 | if (msg_origport(msg) != peer_port) | ||
919 | break; | ||
920 | if (msg_orignode(msg) != peer_node) | ||
921 | break; | ||
922 | tipc_disconnect(dref); | ||
923 | skb_pull(buf, msg_hdr_sz(msg)); | ||
924 | cb(usr_handle, dref, &buf, msg_data(msg), | ||
925 | msg_data_sz(msg), msg_errcode(msg)); | ||
926 | break; | ||
927 | } | ||
928 | case TIPC_DIRECT_MSG:{ | ||
929 | tipc_msg_err_event cb = up_ptr->err_cb; | ||
930 | |||
931 | spin_unlock_bh(p_ptr->publ.lock); | ||
932 | if (connected || !cb) | ||
933 | break; | ||
934 | skb_pull(buf, msg_hdr_sz(msg)); | ||
935 | cb(usr_handle, dref, &buf, msg_data(msg), | ||
936 | msg_data_sz(msg), msg_errcode(msg), &orig); | ||
937 | break; | ||
938 | } | ||
939 | case TIPC_NAMED_MSG:{ | ||
940 | tipc_named_msg_err_event cb = | ||
941 | up_ptr->named_err_cb; | ||
942 | |||
943 | spin_unlock_bh(p_ptr->publ.lock); | ||
944 | if (connected || !cb) | ||
945 | break; | ||
946 | dseq.type = msg_nametype(msg); | ||
947 | dseq.lower = msg_nameinst(msg); | ||
948 | dseq.upper = dseq.lower; | ||
949 | skb_pull(buf, msg_hdr_sz(msg)); | ||
950 | cb(usr_handle, dref, &buf, msg_data(msg), | ||
951 | msg_data_sz(msg), msg_errcode(msg), &dseq); | ||
952 | break; | ||
953 | } | ||
954 | } | ||
955 | if (buf) | ||
956 | buf_discard(buf); | ||
957 | buf = next; | ||
958 | continue; | ||
959 | reject: | ||
960 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | ||
961 | buf = next; | ||
962 | } | ||
963 | } | ||
964 | |||
965 | /* | ||
966 | * port_dispatcher(): Dispatcher for messages destinated | ||
967 | * to the tipc_port interface. Called with port locked. | ||
968 | */ | ||
969 | |||
970 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | ||
971 | { | ||
972 | buf->next = NULL; | ||
973 | spin_lock_bh(&queue_lock); | ||
974 | if (msg_queue_head) { | ||
975 | msg_queue_tail->next = buf; | ||
976 | msg_queue_tail = buf; | ||
977 | } else { | ||
978 | msg_queue_tail = msg_queue_head = buf; | ||
979 | k_signal((Handler)port_dispatcher_sigh, 0); | ||
980 | } | ||
981 | spin_unlock_bh(&queue_lock); | ||
982 | return TIPC_OK; | ||
983 | } | ||
984 | |||
985 | /* | ||
986 | * Wake up port after congestion: Called with port locked, | ||
987 | * | ||
988 | */ | ||
989 | |||
990 | static void port_wakeup_sh(unsigned long ref) | ||
991 | { | ||
992 | struct port *p_ptr; | ||
993 | struct user_port *up_ptr; | ||
994 | tipc_continue_event cb = 0; | ||
995 | void *uh = 0; | ||
996 | |||
997 | p_ptr = port_lock(ref); | ||
998 | if (p_ptr) { | ||
999 | up_ptr = p_ptr->user_port; | ||
1000 | if (up_ptr) { | ||
1001 | cb = up_ptr->continue_event_cb; | ||
1002 | uh = up_ptr->usr_handle; | ||
1003 | } | ||
1004 | port_unlock(p_ptr); | ||
1005 | } | ||
1006 | if (cb) | ||
1007 | cb(uh, ref); | ||
1008 | } | ||
1009 | |||
1010 | |||
1011 | static void port_wakeup(struct tipc_port *p_ptr) | ||
1012 | { | ||
1013 | k_signal((Handler)port_wakeup_sh, p_ptr->ref); | ||
1014 | } | ||
1015 | |||
1016 | void tipc_acknowledge(u32 ref, u32 ack) | ||
1017 | { | ||
1018 | struct port *p_ptr; | ||
1019 | struct sk_buff *buf = 0; | ||
1020 | |||
1021 | p_ptr = port_lock(ref); | ||
1022 | if (!p_ptr) | ||
1023 | return; | ||
1024 | if (p_ptr->publ.connected) { | ||
1025 | p_ptr->publ.conn_unacked -= ack; | ||
1026 | buf = port_build_proto_msg(port_peerport(p_ptr), | ||
1027 | port_peernode(p_ptr), | ||
1028 | ref, | ||
1029 | tipc_own_addr, | ||
1030 | CONN_MANAGER, | ||
1031 | CONN_ACK, | ||
1032 | TIPC_OK, | ||
1033 | port_out_seqno(p_ptr), | ||
1034 | ack); | ||
1035 | } | ||
1036 | port_unlock(p_ptr); | ||
1037 | net_route_msg(buf); | ||
1038 | } | ||
1039 | |||
1040 | /* | ||
1041 | * tipc_createport(): user level call. Will add port to | ||
1042 | * registry if non-zero user_ref. | ||
1043 | */ | ||
1044 | |||
1045 | int tipc_createport(u32 user_ref, | ||
1046 | void *usr_handle, | ||
1047 | unsigned int importance, | ||
1048 | tipc_msg_err_event error_cb, | ||
1049 | tipc_named_msg_err_event named_error_cb, | ||
1050 | tipc_conn_shutdown_event conn_error_cb, | ||
1051 | tipc_msg_event msg_cb, | ||
1052 | tipc_named_msg_event named_msg_cb, | ||
1053 | tipc_conn_msg_event conn_msg_cb, | ||
1054 | tipc_continue_event continue_event_cb,/* May be zero */ | ||
1055 | u32 *portref) | ||
1056 | { | ||
1057 | struct user_port *up_ptr; | ||
1058 | struct port *p_ptr; | ||
1059 | u32 ref; | ||
1060 | |||
1061 | up_ptr = (struct user_port *)kmalloc(sizeof(*up_ptr), GFP_ATOMIC); | ||
1062 | if (up_ptr == NULL) { | ||
1063 | return -ENOMEM; | ||
1064 | } | ||
1065 | ref = tipc_createport_raw(0, port_dispatcher, port_wakeup, importance); | ||
1066 | p_ptr = port_lock(ref); | ||
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); | ||
1084 | reg_add_port(up_ptr); | ||
1085 | *portref = p_ptr->publ.ref; | ||
1086 | dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref); | ||
1087 | port_unlock(p_ptr); | ||
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 | |||
1102 | p_ptr = port_lock(ref); | ||
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 | |||
1117 | p_ptr = port_lock(ref); | ||
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 | |||
1133 | p_ptr = port_lock(ref); | ||
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 | } | ||
1150 | publ = nametbl_publish(seq->type, seq->lower, seq->upper, | ||
1151 | scope, p_ptr->publ.ref, key); | ||
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: | ||
1159 | port_unlock(p_ptr); | ||
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 | |||
1170 | p_ptr = port_lock(ref); | ||
1171 | if (!p_ptr) | ||
1172 | return -EINVAL; | ||
1173 | if (!p_ptr->publ.published) | ||
1174 | goto exit; | ||
1175 | if (!seq) { | ||
1176 | list_for_each_entry_safe(publ, tpubl, | ||
1177 | &p_ptr->publications, pport_list) { | ||
1178 | nametbl_withdraw(publ->type, publ->lower, | ||
1179 | publ->ref, publ->key); | ||
1180 | } | ||
1181 | res = TIPC_OK; | ||
1182 | } else { | ||
1183 | list_for_each_entry_safe(publ, tpubl, | ||
1184 | &p_ptr->publications, pport_list) { | ||
1185 | if (publ->scope != scope) | ||
1186 | continue; | ||
1187 | if (publ->type != seq->type) | ||
1188 | continue; | ||
1189 | if (publ->lower != seq->lower) | ||
1190 | continue; | ||
1191 | if (publ->upper != seq->upper) | ||
1192 | break; | ||
1193 | nametbl_withdraw(publ->type, publ->lower, | ||
1194 | publ->ref, publ->key); | ||
1195 | res = TIPC_OK; | ||
1196 | break; | ||
1197 | } | ||
1198 | } | ||
1199 | if (list_empty(&p_ptr->publications)) | ||
1200 | p_ptr->publ.published = 0; | ||
1201 | exit: | ||
1202 | port_unlock(p_ptr); | ||
1203 | return res; | ||
1204 | } | ||
1205 | |||
1206 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | ||
1207 | { | ||
1208 | struct port *p_ptr; | ||
1209 | struct tipc_msg *msg; | ||
1210 | int res = -EINVAL; | ||
1211 | |||
1212 | p_ptr = port_lock(ref); | ||
1213 | if (!p_ptr) | ||
1214 | return -EINVAL; | ||
1215 | if (p_ptr->publ.published || p_ptr->publ.connected) | ||
1216 | goto exit; | ||
1217 | if (!peer->ref) | ||
1218 | goto exit; | ||
1219 | |||
1220 | msg = &p_ptr->publ.phdr; | ||
1221 | msg_set_destnode(msg, peer->node); | ||
1222 | msg_set_destport(msg, peer->ref); | ||
1223 | msg_set_orignode(msg, tipc_own_addr); | ||
1224 | msg_set_origport(msg, p_ptr->publ.ref); | ||
1225 | msg_set_transp_seqno(msg, 42); | ||
1226 | msg_set_type(msg, TIPC_CONN_MSG); | ||
1227 | if (!may_route(peer->node)) | ||
1228 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | ||
1229 | else | ||
1230 | msg_set_hdr_sz(msg, LONG_H_SIZE); | ||
1231 | |||
1232 | p_ptr->probing_interval = PROBING_INTERVAL; | ||
1233 | p_ptr->probing_state = CONFIRMED; | ||
1234 | p_ptr->publ.connected = 1; | ||
1235 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | ||
1236 | |||
1237 | nodesub_subscribe(&p_ptr->subscription,peer->node, | ||
1238 | (void *)(unsigned long)ref, | ||
1239 | (net_ev_handler)port_handle_node_down); | ||
1240 | res = TIPC_OK; | ||
1241 | exit: | ||
1242 | port_unlock(p_ptr); | ||
1243 | p_ptr->max_pkt = link_get_max_pkt(peer->node, ref); | ||
1244 | return res; | ||
1245 | } | ||
1246 | |||
1247 | /* | ||
1248 | * tipc_disconnect(): Disconnect port form peer. | ||
1249 | * This is a node local operation. | ||
1250 | */ | ||
1251 | |||
1252 | int tipc_disconnect(u32 ref) | ||
1253 | { | ||
1254 | struct port *p_ptr; | ||
1255 | int res = -ENOTCONN; | ||
1256 | |||
1257 | p_ptr = port_lock(ref); | ||
1258 | if (!p_ptr) | ||
1259 | return -EINVAL; | ||
1260 | if (p_ptr->publ.connected) { | ||
1261 | p_ptr->publ.connected = 0; | ||
1262 | /* let timer expire on it's own to avoid deadlock! */ | ||
1263 | nodesub_unsubscribe(&p_ptr->subscription); | ||
1264 | res = TIPC_OK; | ||
1265 | } | ||
1266 | port_unlock(p_ptr); | ||
1267 | return res; | ||
1268 | } | ||
1269 | |||
1270 | /* | ||
1271 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | ||
1272 | */ | ||
1273 | int tipc_shutdown(u32 ref) | ||
1274 | { | ||
1275 | struct port *p_ptr; | ||
1276 | struct sk_buff *buf = 0; | ||
1277 | |||
1278 | p_ptr = port_lock(ref); | ||
1279 | if (!p_ptr) | ||
1280 | return -EINVAL; | ||
1281 | |||
1282 | if (p_ptr->publ.connected) { | ||
1283 | u32 imp = msg_importance(&p_ptr->publ.phdr); | ||
1284 | if (imp < TIPC_CRITICAL_IMPORTANCE) | ||
1285 | imp++; | ||
1286 | buf = port_build_proto_msg(port_peerport(p_ptr), | ||
1287 | port_peernode(p_ptr), | ||
1288 | ref, | ||
1289 | tipc_own_addr, | ||
1290 | imp, | ||
1291 | TIPC_CONN_MSG, | ||
1292 | TIPC_CONN_SHUTDOWN, | ||
1293 | port_out_seqno(p_ptr), | ||
1294 | 0); | ||
1295 | } | ||
1296 | port_unlock(p_ptr); | ||
1297 | net_route_msg(buf); | ||
1298 | return tipc_disconnect(ref); | ||
1299 | } | ||
1300 | |||
1301 | int tipc_isconnected(u32 ref, int *isconnected) | ||
1302 | { | ||
1303 | struct port *p_ptr; | ||
1304 | |||
1305 | p_ptr = port_lock(ref); | ||
1306 | if (!p_ptr) | ||
1307 | return -EINVAL; | ||
1308 | *isconnected = p_ptr->publ.connected; | ||
1309 | port_unlock(p_ptr); | ||
1310 | return TIPC_OK; | ||
1311 | } | ||
1312 | |||
1313 | int tipc_peer(u32 ref, struct tipc_portid *peer) | ||
1314 | { | ||
1315 | struct port *p_ptr; | ||
1316 | int res; | ||
1317 | |||
1318 | p_ptr = port_lock(ref); | ||
1319 | if (!p_ptr) | ||
1320 | return -EINVAL; | ||
1321 | if (p_ptr->publ.connected) { | ||
1322 | peer->ref = port_peerport(p_ptr); | ||
1323 | peer->node = port_peernode(p_ptr); | ||
1324 | res = TIPC_OK; | ||
1325 | } else | ||
1326 | res = -ENOTCONN; | ||
1327 | port_unlock(p_ptr); | ||
1328 | return res; | ||
1329 | } | ||
1330 | |||
1331 | int tipc_ref_valid(u32 ref) | ||
1332 | { | ||
1333 | /* Works irrespective of type */ | ||
1334 | return !!ref_deref(ref); | ||
1335 | } | ||
1336 | |||
1337 | |||
1338 | /* | ||
1339 | * port_recv_sections(): Concatenate and deliver sectioned | ||
1340 | * message for this node. | ||
1341 | */ | ||
1342 | |||
1343 | int port_recv_sections(struct port *sender, unsigned int num_sect, | ||
1344 | struct iovec const *msg_sect) | ||
1345 | { | ||
1346 | struct sk_buff *buf; | ||
1347 | int res; | ||
1348 | |||
1349 | res = msg_build(&sender->publ.phdr, msg_sect, num_sect, | ||
1350 | MAX_MSG_SIZE, !sender->user_port, &buf); | ||
1351 | if (likely(buf)) | ||
1352 | port_recv_msg(buf); | ||
1353 | return res; | ||
1354 | } | ||
1355 | |||
1356 | /** | ||
1357 | * tipc_send - send message sections on connection | ||
1358 | */ | ||
1359 | |||
1360 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | ||
1361 | { | ||
1362 | struct port *p_ptr; | ||
1363 | u32 destnode; | ||
1364 | int res; | ||
1365 | |||
1366 | p_ptr = port_deref(ref); | ||
1367 | if (!p_ptr || !p_ptr->publ.connected) | ||
1368 | return -EINVAL; | ||
1369 | |||
1370 | p_ptr->publ.congested = 1; | ||
1371 | if (!port_congested(p_ptr)) { | ||
1372 | destnode = port_peernode(p_ptr); | ||
1373 | if (likely(destnode != tipc_own_addr)) | ||
1374 | res = link_send_sections_fast(p_ptr, msg_sect, num_sect, | ||
1375 | destnode); | ||
1376 | else | ||
1377 | res = port_recv_sections(p_ptr, num_sect, msg_sect); | ||
1378 | |||
1379 | if (likely(res != -ELINKCONG)) { | ||
1380 | port_incr_out_seqno(p_ptr); | ||
1381 | p_ptr->publ.congested = 0; | ||
1382 | p_ptr->sent++; | ||
1383 | return res; | ||
1384 | } | ||
1385 | } | ||
1386 | if (port_unreliable(p_ptr)) { | ||
1387 | p_ptr->publ.congested = 0; | ||
1388 | /* Just calculate msg length and return */ | ||
1389 | return msg_calc_data_size(msg_sect, num_sect); | ||
1390 | } | ||
1391 | return -ELINKCONG; | ||
1392 | } | ||
1393 | |||
1394 | /** | ||
1395 | * tipc_send_buf - send message buffer on connection | ||
1396 | */ | ||
1397 | |||
1398 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) | ||
1399 | { | ||
1400 | struct port *p_ptr; | ||
1401 | struct tipc_msg *msg; | ||
1402 | u32 destnode; | ||
1403 | u32 hsz; | ||
1404 | u32 sz; | ||
1405 | u32 res; | ||
1406 | |||
1407 | p_ptr = port_deref(ref); | ||
1408 | if (!p_ptr || !p_ptr->publ.connected) | ||
1409 | return -EINVAL; | ||
1410 | |||
1411 | msg = &p_ptr->publ.phdr; | ||
1412 | hsz = msg_hdr_sz(msg); | ||
1413 | sz = hsz + dsz; | ||
1414 | msg_set_size(msg, sz); | ||
1415 | if (skb_cow(buf, hsz)) | ||
1416 | return -ENOMEM; | ||
1417 | |||
1418 | skb_push(buf, hsz); | ||
1419 | memcpy(buf->data, (unchar *)msg, hsz); | ||
1420 | destnode = msg_destnode(msg); | ||
1421 | p_ptr->publ.congested = 1; | ||
1422 | if (!port_congested(p_ptr)) { | ||
1423 | if (likely(destnode != tipc_own_addr)) | ||
1424 | res = tipc_send_buf_fast(buf, destnode); | ||
1425 | else { | ||
1426 | port_recv_msg(buf); | ||
1427 | res = sz; | ||
1428 | } | ||
1429 | if (likely(res != -ELINKCONG)) { | ||
1430 | port_incr_out_seqno(p_ptr); | ||
1431 | p_ptr->sent++; | ||
1432 | p_ptr->publ.congested = 0; | ||
1433 | return res; | ||
1434 | } | ||
1435 | } | ||
1436 | if (port_unreliable(p_ptr)) { | ||
1437 | p_ptr->publ.congested = 0; | ||
1438 | return dsz; | ||
1439 | } | ||
1440 | return -ELINKCONG; | ||
1441 | } | ||
1442 | |||
1443 | /** | ||
1444 | * tipc_forward2name - forward message sections to port name | ||
1445 | */ | ||
1446 | |||
1447 | int tipc_forward2name(u32 ref, | ||
1448 | struct tipc_name const *name, | ||
1449 | u32 domain, | ||
1450 | u32 num_sect, | ||
1451 | struct iovec const *msg_sect, | ||
1452 | struct tipc_portid const *orig, | ||
1453 | unsigned int importance) | ||
1454 | { | ||
1455 | struct port *p_ptr; | ||
1456 | struct tipc_msg *msg; | ||
1457 | u32 destnode = domain; | ||
1458 | u32 destport = 0; | ||
1459 | int res; | ||
1460 | |||
1461 | p_ptr = port_deref(ref); | ||
1462 | if (!p_ptr || p_ptr->publ.connected) | ||
1463 | return -EINVAL; | ||
1464 | |||
1465 | msg = &p_ptr->publ.phdr; | ||
1466 | msg_set_type(msg, TIPC_NAMED_MSG); | ||
1467 | msg_set_orignode(msg, orig->node); | ||
1468 | msg_set_origport(msg, orig->ref); | ||
1469 | msg_set_hdr_sz(msg, LONG_H_SIZE); | ||
1470 | msg_set_nametype(msg, name->type); | ||
1471 | msg_set_nameinst(msg, name->instance); | ||
1472 | msg_set_lookup_scope(msg, addr_scope(domain)); | ||
1473 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | ||
1474 | msg_set_importance(msg,importance); | ||
1475 | destport = nametbl_translate(name->type, name->instance, &destnode); | ||
1476 | msg_set_destnode(msg, destnode); | ||
1477 | msg_set_destport(msg, destport); | ||
1478 | |||
1479 | if (likely(destport || destnode)) { | ||
1480 | p_ptr->sent++; | ||
1481 | if (likely(destnode == tipc_own_addr)) | ||
1482 | return port_recv_sections(p_ptr, num_sect, msg_sect); | ||
1483 | res = link_send_sections_fast(p_ptr, msg_sect, num_sect, | ||
1484 | destnode); | ||
1485 | if (likely(res != -ELINKCONG)) | ||
1486 | return res; | ||
1487 | if (port_unreliable(p_ptr)) { | ||
1488 | /* Just calculate msg length and return */ | ||
1489 | return msg_calc_data_size(msg_sect, num_sect); | ||
1490 | } | ||
1491 | return -ELINKCONG; | ||
1492 | } | ||
1493 | return port_reject_sections(p_ptr, msg, msg_sect, num_sect, | ||
1494 | TIPC_ERR_NO_NAME); | ||
1495 | } | ||
1496 | |||
1497 | /** | ||
1498 | * tipc_send2name - send message sections to port name | ||
1499 | */ | ||
1500 | |||
1501 | int tipc_send2name(u32 ref, | ||
1502 | struct tipc_name const *name, | ||
1503 | unsigned int domain, | ||
1504 | unsigned int num_sect, | ||
1505 | struct iovec const *msg_sect) | ||
1506 | { | ||
1507 | struct tipc_portid orig; | ||
1508 | |||
1509 | orig.ref = ref; | ||
1510 | orig.node = tipc_own_addr; | ||
1511 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | ||
1512 | TIPC_PORT_IMPORTANCE); | ||
1513 | } | ||
1514 | |||
1515 | /** | ||
1516 | * tipc_forward_buf2name - forward message buffer to port name | ||
1517 | */ | ||
1518 | |||
1519 | int tipc_forward_buf2name(u32 ref, | ||
1520 | struct tipc_name const *name, | ||
1521 | u32 domain, | ||
1522 | struct sk_buff *buf, | ||
1523 | unsigned int dsz, | ||
1524 | struct tipc_portid const *orig, | ||
1525 | unsigned int importance) | ||
1526 | { | ||
1527 | struct port *p_ptr; | ||
1528 | struct tipc_msg *msg; | ||
1529 | u32 destnode = domain; | ||
1530 | u32 destport = 0; | ||
1531 | int res; | ||
1532 | |||
1533 | p_ptr = (struct port *)ref_deref(ref); | ||
1534 | if (!p_ptr || p_ptr->publ.connected) | ||
1535 | return -EINVAL; | ||
1536 | |||
1537 | msg = &p_ptr->publ.phdr; | ||
1538 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | ||
1539 | msg_set_importance(msg, importance); | ||
1540 | msg_set_type(msg, TIPC_NAMED_MSG); | ||
1541 | msg_set_orignode(msg, orig->node); | ||
1542 | msg_set_origport(msg, orig->ref); | ||
1543 | msg_set_nametype(msg, name->type); | ||
1544 | msg_set_nameinst(msg, name->instance); | ||
1545 | msg_set_lookup_scope(msg, addr_scope(domain)); | ||
1546 | msg_set_hdr_sz(msg, LONG_H_SIZE); | ||
1547 | msg_set_size(msg, LONG_H_SIZE + dsz); | ||
1548 | destport = nametbl_translate(name->type, name->instance, &destnode); | ||
1549 | msg_set_destnode(msg, destnode); | ||
1550 | msg_set_destport(msg, destport); | ||
1551 | msg_dbg(msg, "forw2name ==> "); | ||
1552 | if (skb_cow(buf, LONG_H_SIZE)) | ||
1553 | return -ENOMEM; | ||
1554 | skb_push(buf, LONG_H_SIZE); | ||
1555 | memcpy(buf->data, (unchar *)msg, LONG_H_SIZE); | ||
1556 | msg_dbg(buf_msg(buf),"PREP:"); | ||
1557 | if (likely(destport || destnode)) { | ||
1558 | p_ptr->sent++; | ||
1559 | if (destnode == tipc_own_addr) | ||
1560 | return port_recv_msg(buf); | ||
1561 | res = tipc_send_buf_fast(buf, destnode); | ||
1562 | if (likely(res != -ELINKCONG)) | ||
1563 | return res; | ||
1564 | if (port_unreliable(p_ptr)) | ||
1565 | return dsz; | ||
1566 | return -ELINKCONG; | ||
1567 | } | ||
1568 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); | ||
1569 | } | ||
1570 | |||
1571 | /** | ||
1572 | * tipc_send_buf2name - send message buffer to port name | ||
1573 | */ | ||
1574 | |||
1575 | int tipc_send_buf2name(u32 ref, | ||
1576 | struct tipc_name const *dest, | ||
1577 | u32 domain, | ||
1578 | struct sk_buff *buf, | ||
1579 | unsigned int dsz) | ||
1580 | { | ||
1581 | struct tipc_portid orig; | ||
1582 | |||
1583 | orig.ref = ref; | ||
1584 | orig.node = tipc_own_addr; | ||
1585 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, | ||
1586 | TIPC_PORT_IMPORTANCE); | ||
1587 | } | ||
1588 | |||
1589 | /** | ||
1590 | * tipc_forward2port - forward message sections to port identity | ||
1591 | */ | ||
1592 | |||
1593 | int tipc_forward2port(u32 ref, | ||
1594 | struct tipc_portid const *dest, | ||
1595 | unsigned int num_sect, | ||
1596 | struct iovec const *msg_sect, | ||
1597 | struct tipc_portid const *orig, | ||
1598 | unsigned int importance) | ||
1599 | { | ||
1600 | struct port *p_ptr; | ||
1601 | struct tipc_msg *msg; | ||
1602 | int res; | ||
1603 | |||
1604 | p_ptr = port_deref(ref); | ||
1605 | if (!p_ptr || p_ptr->publ.connected) | ||
1606 | return -EINVAL; | ||
1607 | |||
1608 | msg = &p_ptr->publ.phdr; | ||
1609 | msg_set_type(msg, TIPC_DIRECT_MSG); | ||
1610 | msg_set_orignode(msg, orig->node); | ||
1611 | msg_set_origport(msg, orig->ref); | ||
1612 | msg_set_destnode(msg, dest->node); | ||
1613 | msg_set_destport(msg, dest->ref); | ||
1614 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | ||
1615 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | ||
1616 | msg_set_importance(msg, importance); | ||
1617 | p_ptr->sent++; | ||
1618 | if (dest->node == tipc_own_addr) | ||
1619 | return port_recv_sections(p_ptr, num_sect, msg_sect); | ||
1620 | res = link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | ||
1621 | if (likely(res != -ELINKCONG)) | ||
1622 | return res; | ||
1623 | if (port_unreliable(p_ptr)) { | ||
1624 | /* Just calculate msg length and return */ | ||
1625 | return msg_calc_data_size(msg_sect, num_sect); | ||
1626 | } | ||
1627 | return -ELINKCONG; | ||
1628 | } | ||
1629 | |||
1630 | /** | ||
1631 | * tipc_send2port - send message sections to port identity | ||
1632 | */ | ||
1633 | |||
1634 | int tipc_send2port(u32 ref, | ||
1635 | struct tipc_portid const *dest, | ||
1636 | unsigned int num_sect, | ||
1637 | struct iovec const *msg_sect) | ||
1638 | { | ||
1639 | struct tipc_portid orig; | ||
1640 | |||
1641 | orig.ref = ref; | ||
1642 | orig.node = tipc_own_addr; | ||
1643 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, | ||
1644 | TIPC_PORT_IMPORTANCE); | ||
1645 | } | ||
1646 | |||
1647 | /** | ||
1648 | * tipc_forward_buf2port - forward message buffer to port identity | ||
1649 | */ | ||
1650 | int tipc_forward_buf2port(u32 ref, | ||
1651 | struct tipc_portid const *dest, | ||
1652 | struct sk_buff *buf, | ||
1653 | unsigned int dsz, | ||
1654 | struct tipc_portid const *orig, | ||
1655 | unsigned int importance) | ||
1656 | { | ||
1657 | struct port *p_ptr; | ||
1658 | struct tipc_msg *msg; | ||
1659 | int res; | ||
1660 | |||
1661 | p_ptr = (struct port *)ref_deref(ref); | ||
1662 | if (!p_ptr || p_ptr->publ.connected) | ||
1663 | return -EINVAL; | ||
1664 | |||
1665 | msg = &p_ptr->publ.phdr; | ||
1666 | msg_set_type(msg, TIPC_DIRECT_MSG); | ||
1667 | msg_set_orignode(msg, orig->node); | ||
1668 | msg_set_origport(msg, orig->ref); | ||
1669 | msg_set_destnode(msg, dest->node); | ||
1670 | msg_set_destport(msg, dest->ref); | ||
1671 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | ||
1672 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | ||
1673 | msg_set_importance(msg, importance); | ||
1674 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | ||
1675 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | ||
1676 | return -ENOMEM; | ||
1677 | |||
1678 | skb_push(buf, DIR_MSG_H_SIZE); | ||
1679 | memcpy(buf->data, (unchar *)msg, DIR_MSG_H_SIZE); | ||
1680 | msg_dbg(msg, "buf2port: "); | ||
1681 | p_ptr->sent++; | ||
1682 | if (dest->node == tipc_own_addr) | ||
1683 | return port_recv_msg(buf); | ||
1684 | res = tipc_send_buf_fast(buf, dest->node); | ||
1685 | if (likely(res != -ELINKCONG)) | ||
1686 | return res; | ||
1687 | if (port_unreliable(p_ptr)) | ||
1688 | return dsz; | ||
1689 | return -ELINKCONG; | ||
1690 | } | ||
1691 | |||
1692 | /** | ||
1693 | * tipc_send_buf2port - send message buffer to port identity | ||
1694 | */ | ||
1695 | |||
1696 | int tipc_send_buf2port(u32 ref, | ||
1697 | struct tipc_portid const *dest, | ||
1698 | struct sk_buff *buf, | ||
1699 | unsigned int dsz) | ||
1700 | { | ||
1701 | struct tipc_portid orig; | ||
1702 | |||
1703 | orig.ref = ref; | ||
1704 | orig.node = tipc_own_addr; | ||
1705 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, | ||
1706 | TIPC_PORT_IMPORTANCE); | ||
1707 | } | ||
1708 | |||