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 | |
4323add6 | 60 | spinlock_t tipc_port_list_lock = SPIN_LOCK_UNLOCKED; |
b97bf3fd PL |
61 | static spinlock_t queue_lock = SPIN_LOCK_UNLOCKED; |
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 | ||
229 | p_ptr = kmalloc(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 | } | |
234 | memset(p_ptr, 0, sizeof(*p_ptr)); | |
4323add6 | 235 | ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock); |
b97bf3fd | 236 | if (!ref) { |
a10bd924 | 237 | warn("Port creation failed, reference table exhausted\n"); |
b97bf3fd PL |
238 | kfree(p_ptr); |
239 | return 0; | |
240 | } | |
241 | ||
4323add6 | 242 | tipc_port_lock(ref); |
b97bf3fd PL |
243 | p_ptr->publ.ref = ref; |
244 | msg = &p_ptr->publ.phdr; | |
245 | msg_init(msg, DATA_LOW, TIPC_NAMED_MSG, TIPC_OK, LONG_H_SIZE, 0); | |
246 | msg_set_orignode(msg, tipc_own_addr); | |
247 | msg_set_prevnode(msg, tipc_own_addr); | |
248 | msg_set_origport(msg, ref); | |
249 | msg_set_importance(msg,importance); | |
250 | p_ptr->last_in_seqno = 41; | |
251 | p_ptr->sent = 1; | |
252 | p_ptr->publ.usr_handle = usr_handle; | |
253 | INIT_LIST_HEAD(&p_ptr->wait_list); | |
254 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
1fc54d8f | 255 | p_ptr->congested_link = NULL; |
b97bf3fd PL |
256 | p_ptr->max_pkt = MAX_PKT_DEFAULT; |
257 | p_ptr->dispatcher = dispatcher; | |
258 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 259 | p_ptr->user_port = NULL; |
b97bf3fd | 260 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 261 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
262 | INIT_LIST_HEAD(&p_ptr->publications); |
263 | INIT_LIST_HEAD(&p_ptr->port_list); | |
264 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 PL |
265 | spin_unlock_bh(&tipc_port_list_lock); |
266 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
267 | return ref; |
268 | } | |
269 | ||
270 | int tipc_deleteport(u32 ref) | |
271 | { | |
272 | struct port *p_ptr; | |
1fc54d8f | 273 | struct sk_buff *buf = NULL; |
b97bf3fd | 274 | |
1fc54d8f | 275 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 276 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
277 | if (!p_ptr) |
278 | return -EINVAL; | |
279 | ||
4323add6 PL |
280 | tipc_ref_discard(ref); |
281 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
282 | |
283 | k_cancel_timer(&p_ptr->timer); | |
284 | if (p_ptr->publ.connected) { | |
285 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
4323add6 | 286 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
287 | } |
288 | if (p_ptr->user_port) { | |
4323add6 | 289 | tipc_reg_remove_port(p_ptr->user_port); |
b97bf3fd PL |
290 | kfree(p_ptr->user_port); |
291 | } | |
292 | ||
4323add6 | 293 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
294 | list_del(&p_ptr->port_list); |
295 | list_del(&p_ptr->wait_list); | |
4323add6 | 296 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
297 | k_term_timer(&p_ptr->timer); |
298 | kfree(p_ptr); | |
299 | dbg("Deleted port %u\n", ref); | |
4323add6 | 300 | tipc_net_route_msg(buf); |
b97bf3fd PL |
301 | return TIPC_OK; |
302 | } | |
303 | ||
304 | /** | |
305 | * tipc_get_port() - return port associated with 'ref' | |
306 | * | |
307 | * Note: Port is not locked. | |
308 | */ | |
309 | ||
310 | struct tipc_port *tipc_get_port(const u32 ref) | |
311 | { | |
4323add6 | 312 | return (struct tipc_port *)tipc_ref_deref(ref); |
b97bf3fd PL |
313 | } |
314 | ||
315 | /** | |
316 | * tipc_get_handle - return user handle associated to port 'ref' | |
317 | */ | |
318 | ||
319 | void *tipc_get_handle(const u32 ref) | |
320 | { | |
321 | struct port *p_ptr; | |
322 | void * handle; | |
323 | ||
4323add6 | 324 | p_ptr = tipc_port_lock(ref); |
b97bf3fd | 325 | if (!p_ptr) |
1fc54d8f | 326 | return NULL; |
b97bf3fd | 327 | handle = p_ptr->publ.usr_handle; |
4323add6 | 328 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
329 | return handle; |
330 | } | |
331 | ||
05790c64 | 332 | static int port_unreliable(struct port *p_ptr) |
b97bf3fd PL |
333 | { |
334 | return msg_src_droppable(&p_ptr->publ.phdr); | |
335 | } | |
336 | ||
337 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
338 | { | |
339 | struct port *p_ptr; | |
340 | ||
4323add6 | 341 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
342 | if (!p_ptr) |
343 | return -EINVAL; | |
344 | *isunreliable = port_unreliable(p_ptr); | |
345 | spin_unlock_bh(p_ptr->publ.lock); | |
346 | return TIPC_OK; | |
347 | } | |
348 | ||
349 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
350 | { | |
351 | struct port *p_ptr; | |
352 | ||
4323add6 | 353 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
354 | if (!p_ptr) |
355 | return -EINVAL; | |
356 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | |
4323add6 | 357 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
358 | return TIPC_OK; |
359 | } | |
360 | ||
05790c64 | 361 | static int port_unreturnable(struct port *p_ptr) |
b97bf3fd PL |
362 | { |
363 | return msg_dest_droppable(&p_ptr->publ.phdr); | |
364 | } | |
365 | ||
366 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
367 | { | |
368 | struct port *p_ptr; | |
369 | ||
4323add6 | 370 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
371 | if (!p_ptr) |
372 | return -EINVAL; | |
373 | *isunrejectable = port_unreturnable(p_ptr); | |
374 | spin_unlock_bh(p_ptr->publ.lock); | |
375 | return TIPC_OK; | |
376 | } | |
377 | ||
378 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
379 | { | |
380 | struct port *p_ptr; | |
381 | ||
4323add6 | 382 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
383 | if (!p_ptr) |
384 | return -EINVAL; | |
385 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | |
4323add6 | 386 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
387 | return TIPC_OK; |
388 | } | |
389 | ||
390 | /* | |
391 | * port_build_proto_msg(): build a port level protocol | |
392 | * or a connection abortion message. Called with | |
393 | * tipc_port lock on. | |
394 | */ | |
395 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
396 | u32 origport, u32 orignode, | |
397 | u32 usr, u32 type, u32 err, | |
398 | u32 seqno, u32 ack) | |
399 | { | |
400 | struct sk_buff *buf; | |
401 | struct tipc_msg *msg; | |
402 | ||
403 | buf = buf_acquire(LONG_H_SIZE); | |
404 | if (buf) { | |
405 | msg = buf_msg(buf); | |
406 | msg_init(msg, usr, type, err, LONG_H_SIZE, destnode); | |
407 | msg_set_destport(msg, destport); | |
408 | msg_set_origport(msg, origport); | |
409 | msg_set_destnode(msg, destnode); | |
410 | msg_set_orignode(msg, orignode); | |
411 | msg_set_transp_seqno(msg, seqno); | |
412 | msg_set_msgcnt(msg, ack); | |
413 | msg_dbg(msg, "PORT>SEND>:"); | |
414 | } | |
415 | return buf; | |
416 | } | |
417 | ||
418 | int tipc_set_msg_option(struct tipc_port *tp_ptr, const char *opt, const u32 sz) | |
419 | { | |
420 | msg_expand(&tp_ptr->phdr, msg_destnode(&tp_ptr->phdr)); | |
421 | msg_set_options(&tp_ptr->phdr, opt, sz); | |
422 | return TIPC_OK; | |
423 | } | |
424 | ||
425 | int tipc_reject_msg(struct sk_buff *buf, u32 err) | |
426 | { | |
427 | struct tipc_msg *msg = buf_msg(buf); | |
428 | struct sk_buff *rbuf; | |
429 | struct tipc_msg *rmsg; | |
430 | int hdr_sz; | |
431 | u32 imp = msg_importance(msg); | |
432 | u32 data_sz = msg_data_sz(msg); | |
433 | ||
434 | if (data_sz > MAX_REJECT_SIZE) | |
435 | data_sz = MAX_REJECT_SIZE; | |
436 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
437 | imp++; | |
438 | msg_dbg(msg, "port->rej: "); | |
439 | ||
440 | /* discard rejected message if it shouldn't be returned to sender */ | |
441 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
442 | buf_discard(buf); | |
443 | return data_sz; | |
444 | } | |
445 | ||
446 | /* construct rejected message */ | |
447 | if (msg_mcast(msg)) | |
448 | hdr_sz = MCAST_H_SIZE; | |
449 | else | |
450 | hdr_sz = LONG_H_SIZE; | |
451 | rbuf = buf_acquire(data_sz + hdr_sz); | |
452 | if (rbuf == NULL) { | |
453 | buf_discard(buf); | |
454 | return data_sz; | |
455 | } | |
456 | rmsg = buf_msg(rbuf); | |
457 | msg_init(rmsg, imp, msg_type(msg), err, hdr_sz, msg_orignode(msg)); | |
458 | msg_set_destport(rmsg, msg_origport(msg)); | |
459 | msg_set_prevnode(rmsg, tipc_own_addr); | |
460 | msg_set_origport(rmsg, msg_destport(msg)); | |
461 | if (msg_short(msg)) | |
462 | msg_set_orignode(rmsg, tipc_own_addr); | |
463 | else | |
464 | msg_set_orignode(rmsg, msg_destnode(msg)); | |
465 | msg_set_size(rmsg, data_sz + hdr_sz); | |
466 | msg_set_nametype(rmsg, msg_nametype(msg)); | |
467 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
468 | memcpy(rbuf->data + hdr_sz, msg_data(msg), data_sz); | |
469 | ||
470 | /* send self-abort message when rejecting on a connected port */ | |
471 | if (msg_connected(msg)) { | |
1fc54d8f | 472 | struct sk_buff *abuf = NULL; |
4323add6 | 473 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
474 | |
475 | if (p_ptr) { | |
476 | if (p_ptr->publ.connected) | |
477 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 478 | tipc_port_unlock(p_ptr); |
b97bf3fd | 479 | } |
4323add6 | 480 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
481 | } |
482 | ||
483 | /* send rejected message */ | |
484 | buf_discard(buf); | |
4323add6 | 485 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
486 | return data_sz; |
487 | } | |
488 | ||
4323add6 PL |
489 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
490 | struct iovec const *msg_sect, u32 num_sect, | |
491 | int err) | |
b97bf3fd PL |
492 | { |
493 | struct sk_buff *buf; | |
494 | int res; | |
495 | ||
496 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, | |
497 | !p_ptr->user_port, &buf); | |
498 | if (!buf) | |
499 | return res; | |
500 | ||
501 | return tipc_reject_msg(buf, err); | |
502 | } | |
503 | ||
504 | static void port_timeout(unsigned long ref) | |
505 | { | |
4323add6 | 506 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 507 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
508 | |
509 | if (!p_ptr || !p_ptr->publ.connected) | |
510 | return; | |
511 | ||
512 | /* Last probe answered ? */ | |
513 | if (p_ptr->probing_state == PROBING) { | |
514 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
515 | } else { | |
516 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
517 | port_peernode(p_ptr), | |
518 | p_ptr->publ.ref, | |
519 | tipc_own_addr, | |
520 | CONN_MANAGER, | |
521 | CONN_PROBE, | |
522 | TIPC_OK, | |
523 | port_out_seqno(p_ptr), | |
524 | 0); | |
525 | port_incr_out_seqno(p_ptr); | |
526 | p_ptr->probing_state = PROBING; | |
527 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
528 | } | |
4323add6 PL |
529 | tipc_port_unlock(p_ptr); |
530 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
531 | } |
532 | ||
533 | ||
534 | static void port_handle_node_down(unsigned long ref) | |
535 | { | |
4323add6 | 536 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 537 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
538 | |
539 | if (!p_ptr) | |
540 | return; | |
541 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
542 | tipc_port_unlock(p_ptr); |
543 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
544 | } |
545 | ||
546 | ||
547 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
548 | { | |
549 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
550 | ||
551 | if (!p_ptr->publ.connected) | |
1fc54d8f | 552 | return NULL; |
b97bf3fd PL |
553 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
554 | imp++; | |
555 | return port_build_proto_msg(p_ptr->publ.ref, | |
556 | tipc_own_addr, | |
557 | port_peerport(p_ptr), | |
558 | port_peernode(p_ptr), | |
559 | imp, | |
560 | TIPC_CONN_MSG, | |
561 | err, | |
562 | p_ptr->last_in_seqno + 1, | |
563 | 0); | |
564 | } | |
565 | ||
566 | ||
567 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
568 | { | |
569 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
570 | ||
571 | if (!p_ptr->publ.connected) | |
1fc54d8f | 572 | return NULL; |
b97bf3fd PL |
573 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
574 | imp++; | |
575 | return port_build_proto_msg(port_peerport(p_ptr), | |
576 | port_peernode(p_ptr), | |
577 | p_ptr->publ.ref, | |
578 | tipc_own_addr, | |
579 | imp, | |
580 | TIPC_CONN_MSG, | |
581 | err, | |
582 | port_out_seqno(p_ptr), | |
583 | 0); | |
584 | } | |
585 | ||
4323add6 | 586 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
587 | { |
588 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 589 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 590 | u32 err = TIPC_OK; |
1fc54d8f SR |
591 | struct sk_buff *r_buf = NULL; |
592 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd PL |
593 | |
594 | msg_dbg(msg, "PORT<RECV<:"); | |
595 | ||
596 | if (!p_ptr) { | |
597 | err = TIPC_ERR_NO_PORT; | |
598 | } else if (p_ptr->publ.connected) { | |
599 | if (port_peernode(p_ptr) != msg_orignode(msg)) | |
600 | err = TIPC_ERR_NO_PORT; | |
601 | if (port_peerport(p_ptr) != msg_origport(msg)) | |
602 | err = TIPC_ERR_NO_PORT; | |
603 | if (!err && msg_routed(msg)) { | |
604 | u32 seqno = msg_transp_seqno(msg); | |
605 | u32 myno = ++p_ptr->last_in_seqno; | |
606 | if (seqno != myno) { | |
607 | err = TIPC_ERR_NO_PORT; | |
608 | abort_buf = port_build_self_abort_msg(p_ptr, err); | |
609 | } | |
610 | } | |
611 | if (msg_type(msg) == CONN_ACK) { | |
4323add6 | 612 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
613 | p_ptr->publ.congested && |
614 | p_ptr->wakeup; | |
615 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 616 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
617 | goto exit; |
618 | p_ptr->publ.congested = 0; | |
619 | if (!wakeup) | |
620 | goto exit; | |
621 | p_ptr->wakeup(&p_ptr->publ); | |
622 | goto exit; | |
623 | } | |
624 | } else if (p_ptr->publ.published) { | |
625 | err = TIPC_ERR_NO_PORT; | |
626 | } | |
627 | if (err) { | |
628 | r_buf = port_build_proto_msg(msg_origport(msg), | |
629 | msg_orignode(msg), | |
630 | msg_destport(msg), | |
631 | tipc_own_addr, | |
632 | DATA_HIGH, | |
633 | TIPC_CONN_MSG, | |
634 | err, | |
635 | 0, | |
636 | 0); | |
637 | goto exit; | |
638 | } | |
639 | ||
640 | /* All is fine */ | |
641 | if (msg_type(msg) == CONN_PROBE) { | |
642 | r_buf = port_build_proto_msg(msg_origport(msg), | |
643 | msg_orignode(msg), | |
644 | msg_destport(msg), | |
645 | tipc_own_addr, | |
646 | CONN_MANAGER, | |
647 | CONN_PROBE_REPLY, | |
648 | TIPC_OK, | |
649 | port_out_seqno(p_ptr), | |
650 | 0); | |
651 | } | |
652 | p_ptr->probing_state = CONFIRMED; | |
653 | port_incr_out_seqno(p_ptr); | |
654 | exit: | |
655 | if (p_ptr) | |
4323add6 PL |
656 | tipc_port_unlock(p_ptr); |
657 | tipc_net_route_msg(r_buf); | |
658 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
659 | buf_discard(buf); |
660 | } | |
661 | ||
662 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
663 | { | |
664 | struct publication *publ; | |
665 | ||
666 | if (full_id) | |
667 | tipc_printf(buf, "<%u.%u.%u:%u>:", | |
668 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), | |
669 | tipc_node(tipc_own_addr), p_ptr->publ.ref); | |
670 | else | |
671 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
672 | ||
673 | if (p_ptr->publ.connected) { | |
674 | u32 dport = port_peerport(p_ptr); | |
675 | u32 destnode = port_peernode(p_ptr); | |
676 | ||
677 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
678 | tipc_zone(destnode), tipc_cluster(destnode), | |
679 | tipc_node(destnode), dport); | |
680 | if (p_ptr->publ.conn_type != 0) | |
681 | tipc_printf(buf, " via {%u,%u}", | |
682 | p_ptr->publ.conn_type, | |
683 | p_ptr->publ.conn_instance); | |
684 | } | |
685 | else if (p_ptr->publ.published) { | |
686 | tipc_printf(buf, " bound to"); | |
687 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
688 | if (publ->lower == publ->upper) | |
689 | tipc_printf(buf, " {%u,%u}", publ->type, | |
690 | publ->lower); | |
691 | else | |
692 | tipc_printf(buf, " {%u,%u,%u}", publ->type, | |
693 | publ->lower, publ->upper); | |
694 | } | |
695 | } | |
696 | tipc_printf(buf, "\n"); | |
697 | } | |
698 | ||
699 | #define MAX_PORT_QUERY 32768 | |
700 | ||
4323add6 | 701 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
702 | { |
703 | struct sk_buff *buf; | |
704 | struct tlv_desc *rep_tlv; | |
705 | struct print_buf pb; | |
706 | struct port *p_ptr; | |
707 | int str_len; | |
708 | ||
4323add6 | 709 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
710 | if (!buf) |
711 | return NULL; | |
712 | rep_tlv = (struct tlv_desc *)buf->data; | |
713 | ||
4323add6 PL |
714 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
715 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
716 | list_for_each_entry(p_ptr, &ports, port_list) { |
717 | spin_lock_bh(p_ptr->publ.lock); | |
718 | port_print(p_ptr, &pb, 0); | |
719 | spin_unlock_bh(p_ptr->publ.lock); | |
720 | } | |
4323add6 PL |
721 | spin_unlock_bh(&tipc_port_list_lock); |
722 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
723 | |
724 | skb_put(buf, TLV_SPACE(str_len)); | |
725 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
726 | ||
727 | return buf; | |
728 | } | |
729 | ||
730 | #if 0 | |
731 | ||
732 | #define MAX_PORT_STATS 2000 | |
733 | ||
734 | struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) | |
735 | { | |
736 | u32 ref; | |
737 | struct port *p_ptr; | |
738 | struct sk_buff *buf; | |
739 | struct tlv_desc *rep_tlv; | |
740 | struct print_buf pb; | |
741 | int str_len; | |
742 | ||
743 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) | |
744 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
745 | ||
746 | ref = *(u32 *)TLV_DATA(req_tlv_area); | |
747 | ref = ntohl(ref); | |
748 | ||
4323add6 | 749 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
750 | if (!p_ptr) |
751 | return cfg_reply_error_string("port not found"); | |
752 | ||
4323add6 | 753 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); |
b97bf3fd | 754 | if (!buf) { |
4323add6 | 755 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
756 | return NULL; |
757 | } | |
758 | rep_tlv = (struct tlv_desc *)buf->data; | |
759 | ||
4323add6 | 760 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); |
b97bf3fd PL |
761 | port_print(p_ptr, &pb, 1); |
762 | /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ | |
4323add6 PL |
763 | tipc_port_unlock(p_ptr); |
764 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
765 | |
766 | skb_put(buf, TLV_SPACE(str_len)); | |
767 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
768 | ||
769 | return buf; | |
770 | } | |
771 | ||
772 | #endif | |
773 | ||
4323add6 | 774 | void tipc_port_reinit(void) |
b97bf3fd PL |
775 | { |
776 | struct port *p_ptr; | |
777 | struct tipc_msg *msg; | |
778 | ||
4323add6 | 779 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
780 | list_for_each_entry(p_ptr, &ports, port_list) { |
781 | msg = &p_ptr->publ.phdr; | |
782 | if (msg_orignode(msg) == tipc_own_addr) | |
783 | break; | |
784 | msg_set_orignode(msg, tipc_own_addr); | |
785 | } | |
4323add6 | 786 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
787 | } |
788 | ||
789 | ||
790 | /* | |
791 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
792 | * to the tipc_port interface. | |
793 | */ | |
794 | ||
795 | static void port_dispatcher_sigh(void *dummy) | |
796 | { | |
797 | struct sk_buff *buf; | |
798 | ||
799 | spin_lock_bh(&queue_lock); | |
800 | buf = msg_queue_head; | |
1fc54d8f | 801 | msg_queue_head = NULL; |
b97bf3fd PL |
802 | spin_unlock_bh(&queue_lock); |
803 | ||
804 | while (buf) { | |
805 | struct port *p_ptr; | |
806 | struct user_port *up_ptr; | |
807 | struct tipc_portid orig; | |
808 | struct tipc_name_seq dseq; | |
809 | void *usr_handle; | |
810 | int connected; | |
811 | int published; | |
9688243b | 812 | u32 message_type; |
b97bf3fd PL |
813 | |
814 | struct sk_buff *next = buf->next; | |
815 | struct tipc_msg *msg = buf_msg(buf); | |
816 | u32 dref = msg_destport(msg); | |
817 | ||
9688243b AS |
818 | message_type = msg_type(msg); |
819 | if (message_type > TIPC_DIRECT_MSG) | |
820 | goto reject; /* Unsupported message type */ | |
821 | ||
4323add6 | 822 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
823 | if (!p_ptr) |
824 | goto reject; /* Port deleted while msg in queue */ | |
825 | ||
b97bf3fd PL |
826 | orig.ref = msg_origport(msg); |
827 | orig.node = msg_orignode(msg); | |
828 | up_ptr = p_ptr->user_port; | |
829 | usr_handle = up_ptr->usr_handle; | |
830 | connected = p_ptr->publ.connected; | |
831 | published = p_ptr->publ.published; | |
832 | ||
833 | if (unlikely(msg_errcode(msg))) | |
834 | goto err; | |
835 | ||
9688243b | 836 | switch (message_type) { |
b97bf3fd PL |
837 | |
838 | case TIPC_CONN_MSG:{ | |
839 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
840 | u32 peer_port = port_peerport(p_ptr); | |
841 | u32 peer_node = port_peernode(p_ptr); | |
842 | ||
843 | spin_unlock_bh(p_ptr->publ.lock); | |
844 | if (unlikely(!connected)) { | |
845 | if (unlikely(published)) | |
846 | goto reject; | |
847 | tipc_connect2port(dref,&orig); | |
848 | } | |
849 | if (unlikely(msg_origport(msg) != peer_port)) | |
850 | goto reject; | |
851 | if (unlikely(msg_orignode(msg) != peer_node)) | |
852 | goto reject; | |
853 | if (unlikely(!cb)) | |
854 | goto reject; | |
855 | if (unlikely(++p_ptr->publ.conn_unacked >= | |
856 | TIPC_FLOW_CONTROL_WIN)) | |
857 | tipc_acknowledge(dref, | |
858 | p_ptr->publ.conn_unacked); | |
859 | skb_pull(buf, msg_hdr_sz(msg)); | |
860 | cb(usr_handle, dref, &buf, msg_data(msg), | |
861 | msg_data_sz(msg)); | |
862 | break; | |
863 | } | |
864 | case TIPC_DIRECT_MSG:{ | |
865 | tipc_msg_event cb = up_ptr->msg_cb; | |
866 | ||
867 | spin_unlock_bh(p_ptr->publ.lock); | |
868 | if (unlikely(connected)) | |
869 | goto reject; | |
870 | if (unlikely(!cb)) | |
871 | goto reject; | |
872 | skb_pull(buf, msg_hdr_sz(msg)); | |
873 | cb(usr_handle, dref, &buf, msg_data(msg), | |
874 | msg_data_sz(msg), msg_importance(msg), | |
875 | &orig); | |
876 | break; | |
877 | } | |
9688243b | 878 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
879 | case TIPC_NAMED_MSG:{ |
880 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
881 | ||
882 | spin_unlock_bh(p_ptr->publ.lock); | |
883 | if (unlikely(connected)) | |
884 | goto reject; | |
885 | if (unlikely(!cb)) | |
886 | goto reject; | |
887 | if (unlikely(!published)) | |
888 | goto reject; | |
889 | dseq.type = msg_nametype(msg); | |
890 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
891 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
892 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd PL |
893 | skb_pull(buf, msg_hdr_sz(msg)); |
894 | cb(usr_handle, dref, &buf, msg_data(msg), | |
895 | msg_data_sz(msg), msg_importance(msg), | |
896 | &orig, &dseq); | |
897 | break; | |
898 | } | |
899 | } | |
900 | if (buf) | |
901 | buf_discard(buf); | |
902 | buf = next; | |
903 | continue; | |
904 | err: | |
9688243b | 905 | switch (message_type) { |
b97bf3fd PL |
906 | |
907 | case TIPC_CONN_MSG:{ | |
908 | tipc_conn_shutdown_event cb = | |
909 | up_ptr->conn_err_cb; | |
910 | u32 peer_port = port_peerport(p_ptr); | |
911 | u32 peer_node = port_peernode(p_ptr); | |
912 | ||
913 | spin_unlock_bh(p_ptr->publ.lock); | |
914 | if (!connected || !cb) | |
915 | break; | |
916 | if (msg_origport(msg) != peer_port) | |
917 | break; | |
918 | if (msg_orignode(msg) != peer_node) | |
919 | break; | |
920 | tipc_disconnect(dref); | |
921 | skb_pull(buf, msg_hdr_sz(msg)); | |
922 | cb(usr_handle, dref, &buf, msg_data(msg), | |
923 | msg_data_sz(msg), msg_errcode(msg)); | |
924 | break; | |
925 | } | |
926 | case TIPC_DIRECT_MSG:{ | |
927 | tipc_msg_err_event cb = up_ptr->err_cb; | |
928 | ||
929 | spin_unlock_bh(p_ptr->publ.lock); | |
930 | if (connected || !cb) | |
931 | break; | |
932 | skb_pull(buf, msg_hdr_sz(msg)); | |
933 | cb(usr_handle, dref, &buf, msg_data(msg), | |
934 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
935 | break; | |
936 | } | |
9688243b | 937 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
938 | case TIPC_NAMED_MSG:{ |
939 | tipc_named_msg_err_event cb = | |
940 | up_ptr->named_err_cb; | |
941 | ||
942 | spin_unlock_bh(p_ptr->publ.lock); | |
943 | if (connected || !cb) | |
944 | break; | |
945 | dseq.type = msg_nametype(msg); | |
946 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
947 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
948 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd PL |
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; | |
4323add6 | 979 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
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; | |
1fc54d8f SR |
994 | tipc_continue_event cb = NULL; |
995 | void *uh = NULL; | |
b97bf3fd | 996 | |
4323add6 | 997 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
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 | } | |
4323add6 | 1004 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1005 | } |
1006 | if (cb) | |
1007 | cb(uh, ref); | |
1008 | } | |
1009 | ||
1010 | ||
1011 | static void port_wakeup(struct tipc_port *p_ptr) | |
1012 | { | |
4323add6 | 1013 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
1014 | } |
1015 | ||
1016 | void tipc_acknowledge(u32 ref, u32 ack) | |
1017 | { | |
1018 | struct port *p_ptr; | |
1fc54d8f | 1019 | struct sk_buff *buf = NULL; |
b97bf3fd | 1020 | |
4323add6 | 1021 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
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 | } | |
4323add6 PL |
1036 | tipc_port_unlock(p_ptr); |
1037 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
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); | |
a10bd924 | 1062 | if (!up_ptr) { |
a75bf874 | 1063 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
1064 | return -ENOMEM; |
1065 | } | |
1fc54d8f | 1066 | ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, importance); |
4323add6 | 1067 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1068 | if (!p_ptr) { |
1069 | kfree(up_ptr); | |
1070 | return -ENOMEM; | |
1071 | } | |
1072 | ||
1073 | p_ptr->user_port = up_ptr; | |
1074 | up_ptr->user_ref = user_ref; | |
1075 | up_ptr->usr_handle = usr_handle; | |
1076 | up_ptr->ref = p_ptr->publ.ref; | |
1077 | up_ptr->err_cb = error_cb; | |
1078 | up_ptr->named_err_cb = named_error_cb; | |
1079 | up_ptr->conn_err_cb = conn_error_cb; | |
1080 | up_ptr->msg_cb = msg_cb; | |
1081 | up_ptr->named_msg_cb = named_msg_cb; | |
1082 | up_ptr->conn_msg_cb = conn_msg_cb; | |
1083 | up_ptr->continue_event_cb = continue_event_cb; | |
1084 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 1085 | tipc_reg_add_port(up_ptr); |
b97bf3fd PL |
1086 | *portref = p_ptr->publ.ref; |
1087 | dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref); | |
4323add6 | 1088 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1089 | return TIPC_OK; |
1090 | } | |
1091 | ||
1092 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) | |
1093 | { | |
1094 | id->ref = ref; | |
1095 | id->node = tipc_own_addr; | |
1096 | return TIPC_OK; | |
1097 | } | |
1098 | ||
1099 | int tipc_portimportance(u32 ref, unsigned int *importance) | |
1100 | { | |
1101 | struct port *p_ptr; | |
1102 | ||
4323add6 | 1103 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1104 | if (!p_ptr) |
1105 | return -EINVAL; | |
1106 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
1107 | spin_unlock_bh(p_ptr->publ.lock); | |
1108 | return TIPC_OK; | |
1109 | } | |
1110 | ||
1111 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
1112 | { | |
1113 | struct port *p_ptr; | |
1114 | ||
1115 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1116 | return -EINVAL; | |
1117 | ||
4323add6 | 1118 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1119 | if (!p_ptr) |
1120 | return -EINVAL; | |
1121 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
1122 | spin_unlock_bh(p_ptr->publ.lock); | |
1123 | return TIPC_OK; | |
1124 | } | |
1125 | ||
1126 | ||
1127 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1128 | { | |
1129 | struct port *p_ptr; | |
1130 | struct publication *publ; | |
1131 | u32 key; | |
1132 | int res = -EINVAL; | |
1133 | ||
4323add6 | 1134 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1135 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1136 | "lower = %u, upper = %u\n", | |
1137 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
1138 | if (!p_ptr) | |
1139 | return -EINVAL; | |
1140 | if (p_ptr->publ.connected) | |
1141 | goto exit; | |
1142 | if (seq->lower > seq->upper) | |
1143 | goto exit; | |
1144 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1145 | goto exit; | |
1146 | key = ref + p_ptr->pub_count + 1; | |
1147 | if (key == ref) { | |
1148 | res = -EADDRINUSE; | |
1149 | goto exit; | |
1150 | } | |
4323add6 PL |
1151 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1152 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1153 | if (publ) { |
1154 | list_add(&publ->pport_list, &p_ptr->publications); | |
1155 | p_ptr->pub_count++; | |
1156 | p_ptr->publ.published = 1; | |
1157 | res = TIPC_OK; | |
1158 | } | |
1159 | exit: | |
4323add6 | 1160 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1161 | return res; |
1162 | } | |
1163 | ||
1164 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1165 | { | |
1166 | struct port *p_ptr; | |
1167 | struct publication *publ; | |
1168 | struct publication *tpubl; | |
1169 | int res = -EINVAL; | |
1170 | ||
4323add6 | 1171 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1172 | if (!p_ptr) |
1173 | return -EINVAL; | |
b97bf3fd PL |
1174 | if (!seq) { |
1175 | list_for_each_entry_safe(publ, tpubl, | |
1176 | &p_ptr->publications, pport_list) { | |
4323add6 PL |
1177 | tipc_nametbl_withdraw(publ->type, publ->lower, |
1178 | publ->ref, publ->key); | |
b97bf3fd PL |
1179 | } |
1180 | res = TIPC_OK; | |
1181 | } else { | |
1182 | list_for_each_entry_safe(publ, tpubl, | |
1183 | &p_ptr->publications, pport_list) { | |
1184 | if (publ->scope != scope) | |
1185 | continue; | |
1186 | if (publ->type != seq->type) | |
1187 | continue; | |
1188 | if (publ->lower != seq->lower) | |
1189 | continue; | |
1190 | if (publ->upper != seq->upper) | |
1191 | break; | |
4323add6 PL |
1192 | tipc_nametbl_withdraw(publ->type, publ->lower, |
1193 | publ->ref, publ->key); | |
b97bf3fd PL |
1194 | res = TIPC_OK; |
1195 | break; | |
1196 | } | |
1197 | } | |
1198 | if (list_empty(&p_ptr->publications)) | |
1199 | p_ptr->publ.published = 0; | |
4323add6 | 1200 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1201 | return res; |
1202 | } | |
1203 | ||
1204 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1205 | { | |
1206 | struct port *p_ptr; | |
1207 | struct tipc_msg *msg; | |
1208 | int res = -EINVAL; | |
1209 | ||
4323add6 | 1210 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1211 | if (!p_ptr) |
1212 | return -EINVAL; | |
1213 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1214 | goto exit; | |
1215 | if (!peer->ref) | |
1216 | goto exit; | |
1217 | ||
1218 | msg = &p_ptr->publ.phdr; | |
1219 | msg_set_destnode(msg, peer->node); | |
1220 | msg_set_destport(msg, peer->ref); | |
1221 | msg_set_orignode(msg, tipc_own_addr); | |
1222 | msg_set_origport(msg, p_ptr->publ.ref); | |
1223 | msg_set_transp_seqno(msg, 42); | |
1224 | msg_set_type(msg, TIPC_CONN_MSG); | |
1225 | if (!may_route(peer->node)) | |
1226 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1227 | else | |
1228 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1229 | ||
1230 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1231 | p_ptr->probing_state = CONFIRMED; | |
1232 | p_ptr->publ.connected = 1; | |
1233 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1234 | ||
4323add6 | 1235 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1236 | (void *)(unsigned long)ref, |
b97bf3fd PL |
1237 | (net_ev_handler)port_handle_node_down); |
1238 | res = TIPC_OK; | |
1239 | exit: | |
4323add6 PL |
1240 | tipc_port_unlock(p_ptr); |
1241 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); | |
b97bf3fd PL |
1242 | return res; |
1243 | } | |
1244 | ||
1245 | /* | |
1246 | * tipc_disconnect(): Disconnect port form peer. | |
1247 | * This is a node local operation. | |
1248 | */ | |
1249 | ||
1250 | int tipc_disconnect(u32 ref) | |
1251 | { | |
1252 | struct port *p_ptr; | |
1253 | int res = -ENOTCONN; | |
1254 | ||
4323add6 | 1255 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1256 | if (!p_ptr) |
1257 | return -EINVAL; | |
1258 | if (p_ptr->publ.connected) { | |
1259 | p_ptr->publ.connected = 0; | |
1260 | /* let timer expire on it's own to avoid deadlock! */ | |
4323add6 | 1261 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
1262 | res = TIPC_OK; |
1263 | } | |
4323add6 | 1264 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1265 | return res; |
1266 | } | |
1267 | ||
1268 | /* | |
1269 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1270 | */ | |
1271 | int tipc_shutdown(u32 ref) | |
1272 | { | |
1273 | struct port *p_ptr; | |
1fc54d8f | 1274 | struct sk_buff *buf = NULL; |
b97bf3fd | 1275 | |
4323add6 | 1276 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1277 | if (!p_ptr) |
1278 | return -EINVAL; | |
1279 | ||
1280 | if (p_ptr->publ.connected) { | |
1281 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1282 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1283 | imp++; | |
1284 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1285 | port_peernode(p_ptr), | |
1286 | ref, | |
1287 | tipc_own_addr, | |
1288 | imp, | |
1289 | TIPC_CONN_MSG, | |
1290 | TIPC_CONN_SHUTDOWN, | |
1291 | port_out_seqno(p_ptr), | |
1292 | 0); | |
1293 | } | |
4323add6 PL |
1294 | tipc_port_unlock(p_ptr); |
1295 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1296 | return tipc_disconnect(ref); |
1297 | } | |
1298 | ||
1299 | int tipc_isconnected(u32 ref, int *isconnected) | |
1300 | { | |
1301 | struct port *p_ptr; | |
1302 | ||
4323add6 | 1303 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1304 | if (!p_ptr) |
1305 | return -EINVAL; | |
1306 | *isconnected = p_ptr->publ.connected; | |
4323add6 | 1307 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1308 | return TIPC_OK; |
1309 | } | |
1310 | ||
1311 | int tipc_peer(u32 ref, struct tipc_portid *peer) | |
1312 | { | |
1313 | struct port *p_ptr; | |
1314 | int res; | |
1315 | ||
4323add6 | 1316 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1317 | if (!p_ptr) |
1318 | return -EINVAL; | |
1319 | if (p_ptr->publ.connected) { | |
1320 | peer->ref = port_peerport(p_ptr); | |
1321 | peer->node = port_peernode(p_ptr); | |
1322 | res = TIPC_OK; | |
1323 | } else | |
1324 | res = -ENOTCONN; | |
4323add6 | 1325 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1326 | return res; |
1327 | } | |
1328 | ||
1329 | int tipc_ref_valid(u32 ref) | |
1330 | { | |
1331 | /* Works irrespective of type */ | |
4323add6 | 1332 | return !!tipc_ref_deref(ref); |
b97bf3fd PL |
1333 | } |
1334 | ||
1335 | ||
1336 | /* | |
4323add6 | 1337 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1338 | * message for this node. |
1339 | */ | |
1340 | ||
4323add6 | 1341 | int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
b97bf3fd PL |
1342 | struct iovec const *msg_sect) |
1343 | { | |
1344 | struct sk_buff *buf; | |
1345 | int res; | |
1346 | ||
1347 | res = msg_build(&sender->publ.phdr, msg_sect, num_sect, | |
1348 | MAX_MSG_SIZE, !sender->user_port, &buf); | |
1349 | if (likely(buf)) | |
4323add6 | 1350 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1351 | return res; |
1352 | } | |
1353 | ||
1354 | /** | |
1355 | * tipc_send - send message sections on connection | |
1356 | */ | |
1357 | ||
1358 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1359 | { | |
1360 | struct port *p_ptr; | |
1361 | u32 destnode; | |
1362 | int res; | |
1363 | ||
4323add6 | 1364 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1365 | if (!p_ptr || !p_ptr->publ.connected) |
1366 | return -EINVAL; | |
1367 | ||
1368 | p_ptr->publ.congested = 1; | |
4323add6 | 1369 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1370 | destnode = port_peernode(p_ptr); |
1371 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1372 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1373 | destnode); | |
b97bf3fd | 1374 | else |
4323add6 | 1375 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1376 | |
1377 | if (likely(res != -ELINKCONG)) { | |
1378 | port_incr_out_seqno(p_ptr); | |
1379 | p_ptr->publ.congested = 0; | |
1380 | p_ptr->sent++; | |
1381 | return res; | |
1382 | } | |
1383 | } | |
1384 | if (port_unreliable(p_ptr)) { | |
1385 | p_ptr->publ.congested = 0; | |
1386 | /* Just calculate msg length and return */ | |
1387 | return msg_calc_data_size(msg_sect, num_sect); | |
1388 | } | |
1389 | return -ELINKCONG; | |
1390 | } | |
1391 | ||
1392 | /** | |
1393 | * tipc_send_buf - send message buffer on connection | |
1394 | */ | |
1395 | ||
1396 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) | |
1397 | { | |
1398 | struct port *p_ptr; | |
1399 | struct tipc_msg *msg; | |
1400 | u32 destnode; | |
1401 | u32 hsz; | |
1402 | u32 sz; | |
1403 | u32 res; | |
1404 | ||
4323add6 | 1405 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1406 | if (!p_ptr || !p_ptr->publ.connected) |
1407 | return -EINVAL; | |
1408 | ||
1409 | msg = &p_ptr->publ.phdr; | |
1410 | hsz = msg_hdr_sz(msg); | |
1411 | sz = hsz + dsz; | |
1412 | msg_set_size(msg, sz); | |
1413 | if (skb_cow(buf, hsz)) | |
1414 | return -ENOMEM; | |
1415 | ||
1416 | skb_push(buf, hsz); | |
1417 | memcpy(buf->data, (unchar *)msg, hsz); | |
1418 | destnode = msg_destnode(msg); | |
1419 | p_ptr->publ.congested = 1; | |
4323add6 | 1420 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1421 | if (likely(destnode != tipc_own_addr)) |
1422 | res = tipc_send_buf_fast(buf, destnode); | |
1423 | else { | |
4323add6 | 1424 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1425 | res = sz; |
1426 | } | |
1427 | if (likely(res != -ELINKCONG)) { | |
1428 | port_incr_out_seqno(p_ptr); | |
1429 | p_ptr->sent++; | |
1430 | p_ptr->publ.congested = 0; | |
1431 | return res; | |
1432 | } | |
1433 | } | |
1434 | if (port_unreliable(p_ptr)) { | |
1435 | p_ptr->publ.congested = 0; | |
1436 | return dsz; | |
1437 | } | |
1438 | return -ELINKCONG; | |
1439 | } | |
1440 | ||
1441 | /** | |
1442 | * tipc_forward2name - forward message sections to port name | |
1443 | */ | |
1444 | ||
1445 | int tipc_forward2name(u32 ref, | |
1446 | struct tipc_name const *name, | |
1447 | u32 domain, | |
1448 | u32 num_sect, | |
1449 | struct iovec const *msg_sect, | |
1450 | struct tipc_portid const *orig, | |
1451 | unsigned int importance) | |
1452 | { | |
1453 | struct port *p_ptr; | |
1454 | struct tipc_msg *msg; | |
1455 | u32 destnode = domain; | |
1456 | u32 destport = 0; | |
1457 | int res; | |
1458 | ||
4323add6 | 1459 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1460 | if (!p_ptr || p_ptr->publ.connected) |
1461 | return -EINVAL; | |
1462 | ||
1463 | msg = &p_ptr->publ.phdr; | |
1464 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1465 | msg_set_orignode(msg, orig->node); | |
1466 | msg_set_origport(msg, orig->ref); | |
1467 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1468 | msg_set_nametype(msg, name->type); | |
1469 | msg_set_nameinst(msg, name->instance); | |
1470 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1471 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1472 | msg_set_importance(msg,importance); | |
4323add6 | 1473 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1474 | msg_set_destnode(msg, destnode); |
1475 | msg_set_destport(msg, destport); | |
1476 | ||
1477 | if (likely(destport || destnode)) { | |
1478 | p_ptr->sent++; | |
1479 | if (likely(destnode == tipc_own_addr)) | |
4323add6 PL |
1480 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1481 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, | |
1482 | destnode); | |
b97bf3fd PL |
1483 | if (likely(res != -ELINKCONG)) |
1484 | return res; | |
1485 | if (port_unreliable(p_ptr)) { | |
1486 | /* Just calculate msg length and return */ | |
1487 | return msg_calc_data_size(msg_sect, num_sect); | |
1488 | } | |
1489 | return -ELINKCONG; | |
1490 | } | |
4323add6 PL |
1491 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
1492 | TIPC_ERR_NO_NAME); | |
b97bf3fd PL |
1493 | } |
1494 | ||
1495 | /** | |
1496 | * tipc_send2name - send message sections to port name | |
1497 | */ | |
1498 | ||
1499 | int tipc_send2name(u32 ref, | |
1500 | struct tipc_name const *name, | |
1501 | unsigned int domain, | |
1502 | unsigned int num_sect, | |
1503 | struct iovec const *msg_sect) | |
1504 | { | |
1505 | struct tipc_portid orig; | |
1506 | ||
1507 | orig.ref = ref; | |
1508 | orig.node = tipc_own_addr; | |
1509 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | |
1510 | TIPC_PORT_IMPORTANCE); | |
1511 | } | |
1512 | ||
1513 | /** | |
1514 | * tipc_forward_buf2name - forward message buffer to port name | |
1515 | */ | |
1516 | ||
1517 | int tipc_forward_buf2name(u32 ref, | |
1518 | struct tipc_name const *name, | |
1519 | u32 domain, | |
1520 | struct sk_buff *buf, | |
1521 | unsigned int dsz, | |
1522 | struct tipc_portid const *orig, | |
1523 | unsigned int importance) | |
1524 | { | |
1525 | struct port *p_ptr; | |
1526 | struct tipc_msg *msg; | |
1527 | u32 destnode = domain; | |
1528 | u32 destport = 0; | |
1529 | int res; | |
1530 | ||
4323add6 | 1531 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1532 | if (!p_ptr || p_ptr->publ.connected) |
1533 | return -EINVAL; | |
1534 | ||
1535 | msg = &p_ptr->publ.phdr; | |
1536 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1537 | msg_set_importance(msg, importance); | |
1538 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1539 | msg_set_orignode(msg, orig->node); | |
1540 | msg_set_origport(msg, orig->ref); | |
1541 | msg_set_nametype(msg, name->type); | |
1542 | msg_set_nameinst(msg, name->instance); | |
1543 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1544 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1545 | msg_set_size(msg, LONG_H_SIZE + dsz); | |
4323add6 | 1546 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1547 | msg_set_destnode(msg, destnode); |
1548 | msg_set_destport(msg, destport); | |
1549 | msg_dbg(msg, "forw2name ==> "); | |
1550 | if (skb_cow(buf, LONG_H_SIZE)) | |
1551 | return -ENOMEM; | |
1552 | skb_push(buf, LONG_H_SIZE); | |
1553 | memcpy(buf->data, (unchar *)msg, LONG_H_SIZE); | |
1554 | msg_dbg(buf_msg(buf),"PREP:"); | |
1555 | if (likely(destport || destnode)) { | |
1556 | p_ptr->sent++; | |
1557 | if (destnode == tipc_own_addr) | |
4323add6 | 1558 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1559 | res = tipc_send_buf_fast(buf, destnode); |
1560 | if (likely(res != -ELINKCONG)) | |
1561 | return res; | |
1562 | if (port_unreliable(p_ptr)) | |
1563 | return dsz; | |
1564 | return -ELINKCONG; | |
1565 | } | |
1566 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); | |
1567 | } | |
1568 | ||
1569 | /** | |
1570 | * tipc_send_buf2name - send message buffer to port name | |
1571 | */ | |
1572 | ||
1573 | int tipc_send_buf2name(u32 ref, | |
1574 | struct tipc_name const *dest, | |
1575 | u32 domain, | |
1576 | struct sk_buff *buf, | |
1577 | unsigned int dsz) | |
1578 | { | |
1579 | struct tipc_portid orig; | |
1580 | ||
1581 | orig.ref = ref; | |
1582 | orig.node = tipc_own_addr; | |
1583 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, | |
1584 | TIPC_PORT_IMPORTANCE); | |
1585 | } | |
1586 | ||
1587 | /** | |
1588 | * tipc_forward2port - forward message sections to port identity | |
1589 | */ | |
1590 | ||
1591 | int tipc_forward2port(u32 ref, | |
1592 | struct tipc_portid const *dest, | |
1593 | unsigned int num_sect, | |
1594 | struct iovec const *msg_sect, | |
1595 | struct tipc_portid const *orig, | |
1596 | unsigned int importance) | |
1597 | { | |
1598 | struct port *p_ptr; | |
1599 | struct tipc_msg *msg; | |
1600 | int res; | |
1601 | ||
4323add6 | 1602 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1603 | if (!p_ptr || p_ptr->publ.connected) |
1604 | return -EINVAL; | |
1605 | ||
1606 | msg = &p_ptr->publ.phdr; | |
1607 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1608 | msg_set_orignode(msg, orig->node); | |
1609 | msg_set_origport(msg, orig->ref); | |
1610 | msg_set_destnode(msg, dest->node); | |
1611 | msg_set_destport(msg, dest->ref); | |
1612 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1613 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1614 | msg_set_importance(msg, importance); | |
1615 | p_ptr->sent++; | |
1616 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1617 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1618 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1619 | if (likely(res != -ELINKCONG)) |
1620 | return res; | |
1621 | if (port_unreliable(p_ptr)) { | |
1622 | /* Just calculate msg length and return */ | |
1623 | return msg_calc_data_size(msg_sect, num_sect); | |
1624 | } | |
1625 | return -ELINKCONG; | |
1626 | } | |
1627 | ||
1628 | /** | |
1629 | * tipc_send2port - send message sections to port identity | |
1630 | */ | |
1631 | ||
1632 | int tipc_send2port(u32 ref, | |
1633 | struct tipc_portid const *dest, | |
1634 | unsigned int num_sect, | |
1635 | struct iovec const *msg_sect) | |
1636 | { | |
1637 | struct tipc_portid orig; | |
1638 | ||
1639 | orig.ref = ref; | |
1640 | orig.node = tipc_own_addr; | |
1641 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, | |
1642 | TIPC_PORT_IMPORTANCE); | |
1643 | } | |
1644 | ||
1645 | /** | |
1646 | * tipc_forward_buf2port - forward message buffer to port identity | |
1647 | */ | |
1648 | int tipc_forward_buf2port(u32 ref, | |
1649 | struct tipc_portid const *dest, | |
1650 | struct sk_buff *buf, | |
1651 | unsigned int dsz, | |
1652 | struct tipc_portid const *orig, | |
1653 | unsigned int importance) | |
1654 | { | |
1655 | struct port *p_ptr; | |
1656 | struct tipc_msg *msg; | |
1657 | int res; | |
1658 | ||
4323add6 | 1659 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1660 | if (!p_ptr || p_ptr->publ.connected) |
1661 | return -EINVAL; | |
1662 | ||
1663 | msg = &p_ptr->publ.phdr; | |
1664 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1665 | msg_set_orignode(msg, orig->node); | |
1666 | msg_set_origport(msg, orig->ref); | |
1667 | msg_set_destnode(msg, dest->node); | |
1668 | msg_set_destport(msg, dest->ref); | |
1669 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1670 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1671 | msg_set_importance(msg, importance); | |
1672 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | |
1673 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1674 | return -ENOMEM; | |
1675 | ||
1676 | skb_push(buf, DIR_MSG_H_SIZE); | |
1677 | memcpy(buf->data, (unchar *)msg, DIR_MSG_H_SIZE); | |
1678 | msg_dbg(msg, "buf2port: "); | |
1679 | p_ptr->sent++; | |
1680 | if (dest->node == tipc_own_addr) | |
4323add6 | 1681 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1682 | res = tipc_send_buf_fast(buf, dest->node); |
1683 | if (likely(res != -ELINKCONG)) | |
1684 | return res; | |
1685 | if (port_unreliable(p_ptr)) | |
1686 | return dsz; | |
1687 | return -ELINKCONG; | |
1688 | } | |
1689 | ||
1690 | /** | |
1691 | * tipc_send_buf2port - send message buffer to port identity | |
1692 | */ | |
1693 | ||
1694 | int tipc_send_buf2port(u32 ref, | |
1695 | struct tipc_portid const *dest, | |
1696 | struct sk_buff *buf, | |
1697 | unsigned int dsz) | |
1698 | { | |
1699 | struct tipc_portid orig; | |
1700 | ||
1701 | orig.ref = ref; | |
1702 | orig.node = tipc_own_addr; | |
1703 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, | |
1704 | TIPC_PORT_IMPORTANCE); | |
1705 | } | |
1706 |