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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 | ||
171 | assert(buf); | |
172 | msg = buf_msg(buf); | |
173 | ||
174 | /* Create destination port list, if one wasn't supplied */ | |
175 | ||
176 | if (dp == NULL) { | |
4323add6 | 177 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
178 | msg_namelower(msg), |
179 | msg_nameupper(msg), | |
180 | TIPC_CLUSTER_SCOPE, | |
181 | &dports); | |
182 | item = dp = &dports; | |
183 | } | |
184 | ||
185 | /* Deliver a copy of message to each destination port */ | |
186 | ||
187 | if (dp->count != 0) { | |
188 | if (dp->count == 1) { | |
189 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
190 | tipc_port_recv_msg(buf); |
191 | tipc_port_list_free(dp); | |
b97bf3fd PL |
192 | return; |
193 | } | |
194 | for (; cnt < dp->count; cnt++) { | |
195 | int index = cnt % PLSIZE; | |
196 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
197 | ||
198 | if (b == NULL) { | |
199 | warn("Buffer allocation failure\n"); | |
200 | msg_dbg(msg, "LOST:"); | |
201 | goto exit; | |
202 | } | |
203 | if ((index == 0) && (cnt != 0)) { | |
204 | item = item->next; | |
205 | } | |
206 | msg_set_destport(buf_msg(b),item->ports[index]); | |
4323add6 | 207 | tipc_port_recv_msg(b); |
b97bf3fd PL |
208 | } |
209 | } | |
210 | exit: | |
211 | buf_discard(buf); | |
4323add6 | 212 | tipc_port_list_free(dp); |
b97bf3fd PL |
213 | } |
214 | ||
215 | /** | |
216 | * tipc_createport_raw - create a native TIPC port | |
217 | * | |
218 | * Returns local port reference | |
219 | */ | |
220 | ||
221 | u32 tipc_createport_raw(void *usr_handle, | |
222 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), | |
223 | void (*wakeup)(struct tipc_port *), | |
224 | const u32 importance) | |
225 | { | |
226 | struct port *p_ptr; | |
227 | struct tipc_msg *msg; | |
228 | u32 ref; | |
229 | ||
230 | p_ptr = kmalloc(sizeof(*p_ptr), GFP_ATOMIC); | |
231 | if (p_ptr == NULL) { | |
232 | warn("Memory squeeze; failed to create port\n"); | |
233 | return 0; | |
234 | } | |
235 | memset(p_ptr, 0, sizeof(*p_ptr)); | |
4323add6 | 236 | ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock); |
b97bf3fd PL |
237 | if (!ref) { |
238 | warn("Reference Table Exhausted\n"); | |
239 | kfree(p_ptr); | |
240 | return 0; | |
241 | } | |
242 | ||
4323add6 | 243 | tipc_port_lock(ref); |
b97bf3fd PL |
244 | p_ptr->publ.ref = ref; |
245 | msg = &p_ptr->publ.phdr; | |
246 | msg_init(msg, DATA_LOW, TIPC_NAMED_MSG, TIPC_OK, LONG_H_SIZE, 0); | |
247 | msg_set_orignode(msg, tipc_own_addr); | |
248 | msg_set_prevnode(msg, tipc_own_addr); | |
249 | msg_set_origport(msg, ref); | |
250 | msg_set_importance(msg,importance); | |
251 | p_ptr->last_in_seqno = 41; | |
252 | p_ptr->sent = 1; | |
253 | p_ptr->publ.usr_handle = usr_handle; | |
254 | INIT_LIST_HEAD(&p_ptr->wait_list); | |
255 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
1fc54d8f | 256 | p_ptr->congested_link = NULL; |
b97bf3fd PL |
257 | p_ptr->max_pkt = MAX_PKT_DEFAULT; |
258 | p_ptr->dispatcher = dispatcher; | |
259 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 260 | p_ptr->user_port = NULL; |
b97bf3fd | 261 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 262 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
263 | INIT_LIST_HEAD(&p_ptr->publications); |
264 | INIT_LIST_HEAD(&p_ptr->port_list); | |
265 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 PL |
266 | spin_unlock_bh(&tipc_port_list_lock); |
267 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
268 | return ref; |
269 | } | |
270 | ||
271 | int tipc_deleteport(u32 ref) | |
272 | { | |
273 | struct port *p_ptr; | |
1fc54d8f | 274 | struct sk_buff *buf = NULL; |
b97bf3fd | 275 | |
1fc54d8f | 276 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 277 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
278 | if (!p_ptr) |
279 | return -EINVAL; | |
280 | ||
4323add6 PL |
281 | tipc_ref_discard(ref); |
282 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
283 | |
284 | k_cancel_timer(&p_ptr->timer); | |
285 | if (p_ptr->publ.connected) { | |
286 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
4323add6 | 287 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
288 | } |
289 | if (p_ptr->user_port) { | |
4323add6 | 290 | tipc_reg_remove_port(p_ptr->user_port); |
b97bf3fd PL |
291 | kfree(p_ptr->user_port); |
292 | } | |
293 | ||
4323add6 | 294 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
295 | list_del(&p_ptr->port_list); |
296 | list_del(&p_ptr->wait_list); | |
4323add6 | 297 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
298 | k_term_timer(&p_ptr->timer); |
299 | kfree(p_ptr); | |
300 | dbg("Deleted port %u\n", ref); | |
4323add6 | 301 | tipc_net_route_msg(buf); |
b97bf3fd PL |
302 | return TIPC_OK; |
303 | } | |
304 | ||
305 | /** | |
306 | * tipc_get_port() - return port associated with 'ref' | |
307 | * | |
308 | * Note: Port is not locked. | |
309 | */ | |
310 | ||
311 | struct tipc_port *tipc_get_port(const u32 ref) | |
312 | { | |
4323add6 | 313 | return (struct tipc_port *)tipc_ref_deref(ref); |
b97bf3fd PL |
314 | } |
315 | ||
316 | /** | |
317 | * tipc_get_handle - return user handle associated to port 'ref' | |
318 | */ | |
319 | ||
320 | void *tipc_get_handle(const u32 ref) | |
321 | { | |
322 | struct port *p_ptr; | |
323 | void * handle; | |
324 | ||
4323add6 | 325 | p_ptr = tipc_port_lock(ref); |
b97bf3fd | 326 | if (!p_ptr) |
1fc54d8f | 327 | return NULL; |
b97bf3fd | 328 | handle = p_ptr->publ.usr_handle; |
4323add6 | 329 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
330 | return handle; |
331 | } | |
332 | ||
05790c64 | 333 | static int port_unreliable(struct port *p_ptr) |
b97bf3fd PL |
334 | { |
335 | return msg_src_droppable(&p_ptr->publ.phdr); | |
336 | } | |
337 | ||
338 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
339 | { | |
340 | struct port *p_ptr; | |
341 | ||
4323add6 | 342 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
343 | if (!p_ptr) |
344 | return -EINVAL; | |
345 | *isunreliable = port_unreliable(p_ptr); | |
346 | spin_unlock_bh(p_ptr->publ.lock); | |
347 | return TIPC_OK; | |
348 | } | |
349 | ||
350 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
351 | { | |
352 | struct port *p_ptr; | |
353 | ||
4323add6 | 354 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
355 | if (!p_ptr) |
356 | return -EINVAL; | |
357 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | |
4323add6 | 358 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
359 | return TIPC_OK; |
360 | } | |
361 | ||
05790c64 | 362 | static int port_unreturnable(struct port *p_ptr) |
b97bf3fd PL |
363 | { |
364 | return msg_dest_droppable(&p_ptr->publ.phdr); | |
365 | } | |
366 | ||
367 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
368 | { | |
369 | struct port *p_ptr; | |
370 | ||
4323add6 | 371 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
372 | if (!p_ptr) |
373 | return -EINVAL; | |
374 | *isunrejectable = port_unreturnable(p_ptr); | |
375 | spin_unlock_bh(p_ptr->publ.lock); | |
376 | return TIPC_OK; | |
377 | } | |
378 | ||
379 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
380 | { | |
381 | struct port *p_ptr; | |
382 | ||
4323add6 | 383 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
384 | if (!p_ptr) |
385 | return -EINVAL; | |
386 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | |
4323add6 | 387 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
388 | return TIPC_OK; |
389 | } | |
390 | ||
391 | /* | |
392 | * port_build_proto_msg(): build a port level protocol | |
393 | * or a connection abortion message. Called with | |
394 | * tipc_port lock on. | |
395 | */ | |
396 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
397 | u32 origport, u32 orignode, | |
398 | u32 usr, u32 type, u32 err, | |
399 | u32 seqno, u32 ack) | |
400 | { | |
401 | struct sk_buff *buf; | |
402 | struct tipc_msg *msg; | |
403 | ||
404 | buf = buf_acquire(LONG_H_SIZE); | |
405 | if (buf) { | |
406 | msg = buf_msg(buf); | |
407 | msg_init(msg, usr, type, err, LONG_H_SIZE, destnode); | |
408 | msg_set_destport(msg, destport); | |
409 | msg_set_origport(msg, origport); | |
410 | msg_set_destnode(msg, destnode); | |
411 | msg_set_orignode(msg, orignode); | |
412 | msg_set_transp_seqno(msg, seqno); | |
413 | msg_set_msgcnt(msg, ack); | |
414 | msg_dbg(msg, "PORT>SEND>:"); | |
415 | } | |
416 | return buf; | |
417 | } | |
418 | ||
419 | int tipc_set_msg_option(struct tipc_port *tp_ptr, const char *opt, const u32 sz) | |
420 | { | |
421 | msg_expand(&tp_ptr->phdr, msg_destnode(&tp_ptr->phdr)); | |
422 | msg_set_options(&tp_ptr->phdr, opt, sz); | |
423 | return TIPC_OK; | |
424 | } | |
425 | ||
426 | int tipc_reject_msg(struct sk_buff *buf, u32 err) | |
427 | { | |
428 | struct tipc_msg *msg = buf_msg(buf); | |
429 | struct sk_buff *rbuf; | |
430 | struct tipc_msg *rmsg; | |
431 | int hdr_sz; | |
432 | u32 imp = msg_importance(msg); | |
433 | u32 data_sz = msg_data_sz(msg); | |
434 | ||
435 | if (data_sz > MAX_REJECT_SIZE) | |
436 | data_sz = MAX_REJECT_SIZE; | |
437 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
438 | imp++; | |
439 | msg_dbg(msg, "port->rej: "); | |
440 | ||
441 | /* discard rejected message if it shouldn't be returned to sender */ | |
442 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
443 | buf_discard(buf); | |
444 | return data_sz; | |
445 | } | |
446 | ||
447 | /* construct rejected message */ | |
448 | if (msg_mcast(msg)) | |
449 | hdr_sz = MCAST_H_SIZE; | |
450 | else | |
451 | hdr_sz = LONG_H_SIZE; | |
452 | rbuf = buf_acquire(data_sz + hdr_sz); | |
453 | if (rbuf == NULL) { | |
454 | buf_discard(buf); | |
455 | return data_sz; | |
456 | } | |
457 | rmsg = buf_msg(rbuf); | |
458 | msg_init(rmsg, imp, msg_type(msg), err, hdr_sz, msg_orignode(msg)); | |
459 | msg_set_destport(rmsg, msg_origport(msg)); | |
460 | msg_set_prevnode(rmsg, tipc_own_addr); | |
461 | msg_set_origport(rmsg, msg_destport(msg)); | |
462 | if (msg_short(msg)) | |
463 | msg_set_orignode(rmsg, tipc_own_addr); | |
464 | else | |
465 | msg_set_orignode(rmsg, msg_destnode(msg)); | |
466 | msg_set_size(rmsg, data_sz + hdr_sz); | |
467 | msg_set_nametype(rmsg, msg_nametype(msg)); | |
468 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
469 | memcpy(rbuf->data + hdr_sz, msg_data(msg), data_sz); | |
470 | ||
471 | /* send self-abort message when rejecting on a connected port */ | |
472 | if (msg_connected(msg)) { | |
1fc54d8f | 473 | struct sk_buff *abuf = NULL; |
4323add6 | 474 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
475 | |
476 | if (p_ptr) { | |
477 | if (p_ptr->publ.connected) | |
478 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 479 | tipc_port_unlock(p_ptr); |
b97bf3fd | 480 | } |
4323add6 | 481 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
482 | } |
483 | ||
484 | /* send rejected message */ | |
485 | buf_discard(buf); | |
4323add6 | 486 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
487 | return data_sz; |
488 | } | |
489 | ||
4323add6 PL |
490 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
491 | struct iovec const *msg_sect, u32 num_sect, | |
492 | int err) | |
b97bf3fd PL |
493 | { |
494 | struct sk_buff *buf; | |
495 | int res; | |
496 | ||
497 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, | |
498 | !p_ptr->user_port, &buf); | |
499 | if (!buf) | |
500 | return res; | |
501 | ||
502 | return tipc_reject_msg(buf, err); | |
503 | } | |
504 | ||
505 | static void port_timeout(unsigned long ref) | |
506 | { | |
4323add6 | 507 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 508 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
509 | |
510 | if (!p_ptr || !p_ptr->publ.connected) | |
511 | return; | |
512 | ||
513 | /* Last probe answered ? */ | |
514 | if (p_ptr->probing_state == PROBING) { | |
515 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
516 | } else { | |
517 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
518 | port_peernode(p_ptr), | |
519 | p_ptr->publ.ref, | |
520 | tipc_own_addr, | |
521 | CONN_MANAGER, | |
522 | CONN_PROBE, | |
523 | TIPC_OK, | |
524 | port_out_seqno(p_ptr), | |
525 | 0); | |
526 | port_incr_out_seqno(p_ptr); | |
527 | p_ptr->probing_state = PROBING; | |
528 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
529 | } | |
4323add6 PL |
530 | tipc_port_unlock(p_ptr); |
531 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
532 | } |
533 | ||
534 | ||
535 | static void port_handle_node_down(unsigned long ref) | |
536 | { | |
4323add6 | 537 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 538 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
539 | |
540 | if (!p_ptr) | |
541 | return; | |
542 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
543 | tipc_port_unlock(p_ptr); |
544 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
545 | } |
546 | ||
547 | ||
548 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
549 | { | |
550 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
551 | ||
552 | if (!p_ptr->publ.connected) | |
1fc54d8f | 553 | return NULL; |
b97bf3fd PL |
554 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
555 | imp++; | |
556 | return port_build_proto_msg(p_ptr->publ.ref, | |
557 | tipc_own_addr, | |
558 | port_peerport(p_ptr), | |
559 | port_peernode(p_ptr), | |
560 | imp, | |
561 | TIPC_CONN_MSG, | |
562 | err, | |
563 | p_ptr->last_in_seqno + 1, | |
564 | 0); | |
565 | } | |
566 | ||
567 | ||
568 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
569 | { | |
570 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
571 | ||
572 | if (!p_ptr->publ.connected) | |
1fc54d8f | 573 | return NULL; |
b97bf3fd PL |
574 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
575 | imp++; | |
576 | return port_build_proto_msg(port_peerport(p_ptr), | |
577 | port_peernode(p_ptr), | |
578 | p_ptr->publ.ref, | |
579 | tipc_own_addr, | |
580 | imp, | |
581 | TIPC_CONN_MSG, | |
582 | err, | |
583 | port_out_seqno(p_ptr), | |
584 | 0); | |
585 | } | |
586 | ||
4323add6 | 587 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
588 | { |
589 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 590 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 591 | u32 err = TIPC_OK; |
1fc54d8f SR |
592 | struct sk_buff *r_buf = NULL; |
593 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd PL |
594 | |
595 | msg_dbg(msg, "PORT<RECV<:"); | |
596 | ||
597 | if (!p_ptr) { | |
598 | err = TIPC_ERR_NO_PORT; | |
599 | } else if (p_ptr->publ.connected) { | |
600 | if (port_peernode(p_ptr) != msg_orignode(msg)) | |
601 | err = TIPC_ERR_NO_PORT; | |
602 | if (port_peerport(p_ptr) != msg_origport(msg)) | |
603 | err = TIPC_ERR_NO_PORT; | |
604 | if (!err && msg_routed(msg)) { | |
605 | u32 seqno = msg_transp_seqno(msg); | |
606 | u32 myno = ++p_ptr->last_in_seqno; | |
607 | if (seqno != myno) { | |
608 | err = TIPC_ERR_NO_PORT; | |
609 | abort_buf = port_build_self_abort_msg(p_ptr, err); | |
610 | } | |
611 | } | |
612 | if (msg_type(msg) == CONN_ACK) { | |
4323add6 | 613 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
614 | p_ptr->publ.congested && |
615 | p_ptr->wakeup; | |
616 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 617 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
618 | goto exit; |
619 | p_ptr->publ.congested = 0; | |
620 | if (!wakeup) | |
621 | goto exit; | |
622 | p_ptr->wakeup(&p_ptr->publ); | |
623 | goto exit; | |
624 | } | |
625 | } else if (p_ptr->publ.published) { | |
626 | err = TIPC_ERR_NO_PORT; | |
627 | } | |
628 | if (err) { | |
629 | r_buf = port_build_proto_msg(msg_origport(msg), | |
630 | msg_orignode(msg), | |
631 | msg_destport(msg), | |
632 | tipc_own_addr, | |
633 | DATA_HIGH, | |
634 | TIPC_CONN_MSG, | |
635 | err, | |
636 | 0, | |
637 | 0); | |
638 | goto exit; | |
639 | } | |
640 | ||
641 | /* All is fine */ | |
642 | if (msg_type(msg) == CONN_PROBE) { | |
643 | r_buf = port_build_proto_msg(msg_origport(msg), | |
644 | msg_orignode(msg), | |
645 | msg_destport(msg), | |
646 | tipc_own_addr, | |
647 | CONN_MANAGER, | |
648 | CONN_PROBE_REPLY, | |
649 | TIPC_OK, | |
650 | port_out_seqno(p_ptr), | |
651 | 0); | |
652 | } | |
653 | p_ptr->probing_state = CONFIRMED; | |
654 | port_incr_out_seqno(p_ptr); | |
655 | exit: | |
656 | if (p_ptr) | |
4323add6 PL |
657 | tipc_port_unlock(p_ptr); |
658 | tipc_net_route_msg(r_buf); | |
659 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
660 | buf_discard(buf); |
661 | } | |
662 | ||
663 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
664 | { | |
665 | struct publication *publ; | |
666 | ||
667 | if (full_id) | |
668 | tipc_printf(buf, "<%u.%u.%u:%u>:", | |
669 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), | |
670 | tipc_node(tipc_own_addr), p_ptr->publ.ref); | |
671 | else | |
672 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
673 | ||
674 | if (p_ptr->publ.connected) { | |
675 | u32 dport = port_peerport(p_ptr); | |
676 | u32 destnode = port_peernode(p_ptr); | |
677 | ||
678 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
679 | tipc_zone(destnode), tipc_cluster(destnode), | |
680 | tipc_node(destnode), dport); | |
681 | if (p_ptr->publ.conn_type != 0) | |
682 | tipc_printf(buf, " via {%u,%u}", | |
683 | p_ptr->publ.conn_type, | |
684 | p_ptr->publ.conn_instance); | |
685 | } | |
686 | else if (p_ptr->publ.published) { | |
687 | tipc_printf(buf, " bound to"); | |
688 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
689 | if (publ->lower == publ->upper) | |
690 | tipc_printf(buf, " {%u,%u}", publ->type, | |
691 | publ->lower); | |
692 | else | |
693 | tipc_printf(buf, " {%u,%u,%u}", publ->type, | |
694 | publ->lower, publ->upper); | |
695 | } | |
696 | } | |
697 | tipc_printf(buf, "\n"); | |
698 | } | |
699 | ||
700 | #define MAX_PORT_QUERY 32768 | |
701 | ||
4323add6 | 702 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
703 | { |
704 | struct sk_buff *buf; | |
705 | struct tlv_desc *rep_tlv; | |
706 | struct print_buf pb; | |
707 | struct port *p_ptr; | |
708 | int str_len; | |
709 | ||
4323add6 | 710 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
711 | if (!buf) |
712 | return NULL; | |
713 | rep_tlv = (struct tlv_desc *)buf->data; | |
714 | ||
4323add6 PL |
715 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
716 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
717 | list_for_each_entry(p_ptr, &ports, port_list) { |
718 | spin_lock_bh(p_ptr->publ.lock); | |
719 | port_print(p_ptr, &pb, 0); | |
720 | spin_unlock_bh(p_ptr->publ.lock); | |
721 | } | |
4323add6 PL |
722 | spin_unlock_bh(&tipc_port_list_lock); |
723 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
724 | |
725 | skb_put(buf, TLV_SPACE(str_len)); | |
726 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
727 | ||
728 | return buf; | |
729 | } | |
730 | ||
731 | #if 0 | |
732 | ||
733 | #define MAX_PORT_STATS 2000 | |
734 | ||
735 | struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) | |
736 | { | |
737 | u32 ref; | |
738 | struct port *p_ptr; | |
739 | struct sk_buff *buf; | |
740 | struct tlv_desc *rep_tlv; | |
741 | struct print_buf pb; | |
742 | int str_len; | |
743 | ||
744 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) | |
745 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
746 | ||
747 | ref = *(u32 *)TLV_DATA(req_tlv_area); | |
748 | ref = ntohl(ref); | |
749 | ||
4323add6 | 750 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
751 | if (!p_ptr) |
752 | return cfg_reply_error_string("port not found"); | |
753 | ||
4323add6 | 754 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); |
b97bf3fd | 755 | if (!buf) { |
4323add6 | 756 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
757 | return NULL; |
758 | } | |
759 | rep_tlv = (struct tlv_desc *)buf->data; | |
760 | ||
4323add6 | 761 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); |
b97bf3fd PL |
762 | port_print(p_ptr, &pb, 1); |
763 | /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ | |
4323add6 PL |
764 | tipc_port_unlock(p_ptr); |
765 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
766 | |
767 | skb_put(buf, TLV_SPACE(str_len)); | |
768 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
769 | ||
770 | return buf; | |
771 | } | |
772 | ||
773 | #endif | |
774 | ||
4323add6 | 775 | void tipc_port_reinit(void) |
b97bf3fd PL |
776 | { |
777 | struct port *p_ptr; | |
778 | struct tipc_msg *msg; | |
779 | ||
4323add6 | 780 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
781 | list_for_each_entry(p_ptr, &ports, port_list) { |
782 | msg = &p_ptr->publ.phdr; | |
783 | if (msg_orignode(msg) == tipc_own_addr) | |
784 | break; | |
785 | msg_set_orignode(msg, tipc_own_addr); | |
786 | } | |
4323add6 | 787 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
788 | } |
789 | ||
790 | ||
791 | /* | |
792 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
793 | * to the tipc_port interface. | |
794 | */ | |
795 | ||
796 | static void port_dispatcher_sigh(void *dummy) | |
797 | { | |
798 | struct sk_buff *buf; | |
799 | ||
800 | spin_lock_bh(&queue_lock); | |
801 | buf = msg_queue_head; | |
1fc54d8f | 802 | msg_queue_head = NULL; |
b97bf3fd PL |
803 | spin_unlock_bh(&queue_lock); |
804 | ||
805 | while (buf) { | |
806 | struct port *p_ptr; | |
807 | struct user_port *up_ptr; | |
808 | struct tipc_portid orig; | |
809 | struct tipc_name_seq dseq; | |
810 | void *usr_handle; | |
811 | int connected; | |
812 | int published; | |
813 | ||
814 | struct sk_buff *next = buf->next; | |
815 | struct tipc_msg *msg = buf_msg(buf); | |
816 | u32 dref = msg_destport(msg); | |
817 | ||
4323add6 | 818 | p_ptr = tipc_port_lock(dref); |
b97bf3fd PL |
819 | if (!p_ptr) { |
820 | /* Port deleted while msg in queue */ | |
821 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
822 | buf = next; | |
823 | continue; | |
824 | } | |
825 | orig.ref = msg_origport(msg); | |
826 | orig.node = msg_orignode(msg); | |
827 | up_ptr = p_ptr->user_port; | |
828 | usr_handle = up_ptr->usr_handle; | |
829 | connected = p_ptr->publ.connected; | |
830 | published = p_ptr->publ.published; | |
831 | ||
832 | if (unlikely(msg_errcode(msg))) | |
833 | goto err; | |
834 | ||
835 | switch (msg_type(msg)) { | |
836 | ||
837 | case TIPC_CONN_MSG:{ | |
838 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
839 | u32 peer_port = port_peerport(p_ptr); | |
840 | u32 peer_node = port_peernode(p_ptr); | |
841 | ||
842 | spin_unlock_bh(p_ptr->publ.lock); | |
843 | if (unlikely(!connected)) { | |
844 | if (unlikely(published)) | |
845 | goto reject; | |
846 | tipc_connect2port(dref,&orig); | |
847 | } | |
848 | if (unlikely(msg_origport(msg) != peer_port)) | |
849 | goto reject; | |
850 | if (unlikely(msg_orignode(msg) != peer_node)) | |
851 | goto reject; | |
852 | if (unlikely(!cb)) | |
853 | goto reject; | |
854 | if (unlikely(++p_ptr->publ.conn_unacked >= | |
855 | TIPC_FLOW_CONTROL_WIN)) | |
856 | tipc_acknowledge(dref, | |
857 | p_ptr->publ.conn_unacked); | |
858 | skb_pull(buf, msg_hdr_sz(msg)); | |
859 | cb(usr_handle, dref, &buf, msg_data(msg), | |
860 | msg_data_sz(msg)); | |
861 | break; | |
862 | } | |
863 | case TIPC_DIRECT_MSG:{ | |
864 | tipc_msg_event cb = up_ptr->msg_cb; | |
865 | ||
866 | spin_unlock_bh(p_ptr->publ.lock); | |
867 | if (unlikely(connected)) | |
868 | goto reject; | |
869 | if (unlikely(!cb)) | |
870 | goto reject; | |
871 | skb_pull(buf, msg_hdr_sz(msg)); | |
872 | cb(usr_handle, dref, &buf, msg_data(msg), | |
873 | msg_data_sz(msg), msg_importance(msg), | |
874 | &orig); | |
875 | break; | |
876 | } | |
877 | case TIPC_NAMED_MSG:{ | |
878 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
879 | ||
880 | spin_unlock_bh(p_ptr->publ.lock); | |
881 | if (unlikely(connected)) | |
882 | goto reject; | |
883 | if (unlikely(!cb)) | |
884 | goto reject; | |
885 | if (unlikely(!published)) | |
886 | goto reject; | |
887 | dseq.type = msg_nametype(msg); | |
888 | dseq.lower = msg_nameinst(msg); | |
889 | dseq.upper = dseq.lower; | |
890 | skb_pull(buf, msg_hdr_sz(msg)); | |
891 | cb(usr_handle, dref, &buf, msg_data(msg), | |
892 | msg_data_sz(msg), msg_importance(msg), | |
893 | &orig, &dseq); | |
894 | break; | |
895 | } | |
896 | } | |
897 | if (buf) | |
898 | buf_discard(buf); | |
899 | buf = next; | |
900 | continue; | |
901 | err: | |
902 | switch (msg_type(msg)) { | |
903 | ||
904 | case TIPC_CONN_MSG:{ | |
905 | tipc_conn_shutdown_event cb = | |
906 | up_ptr->conn_err_cb; | |
907 | u32 peer_port = port_peerport(p_ptr); | |
908 | u32 peer_node = port_peernode(p_ptr); | |
909 | ||
910 | spin_unlock_bh(p_ptr->publ.lock); | |
911 | if (!connected || !cb) | |
912 | break; | |
913 | if (msg_origport(msg) != peer_port) | |
914 | break; | |
915 | if (msg_orignode(msg) != peer_node) | |
916 | break; | |
917 | tipc_disconnect(dref); | |
918 | skb_pull(buf, msg_hdr_sz(msg)); | |
919 | cb(usr_handle, dref, &buf, msg_data(msg), | |
920 | msg_data_sz(msg), msg_errcode(msg)); | |
921 | break; | |
922 | } | |
923 | case TIPC_DIRECT_MSG:{ | |
924 | tipc_msg_err_event cb = up_ptr->err_cb; | |
925 | ||
926 | spin_unlock_bh(p_ptr->publ.lock); | |
927 | if (connected || !cb) | |
928 | break; | |
929 | skb_pull(buf, msg_hdr_sz(msg)); | |
930 | cb(usr_handle, dref, &buf, msg_data(msg), | |
931 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
932 | break; | |
933 | } | |
934 | case TIPC_NAMED_MSG:{ | |
935 | tipc_named_msg_err_event cb = | |
936 | up_ptr->named_err_cb; | |
937 | ||
938 | spin_unlock_bh(p_ptr->publ.lock); | |
939 | if (connected || !cb) | |
940 | break; | |
941 | dseq.type = msg_nametype(msg); | |
942 | dseq.lower = msg_nameinst(msg); | |
943 | dseq.upper = dseq.lower; | |
944 | skb_pull(buf, msg_hdr_sz(msg)); | |
945 | cb(usr_handle, dref, &buf, msg_data(msg), | |
946 | msg_data_sz(msg), msg_errcode(msg), &dseq); | |
947 | break; | |
948 | } | |
949 | } | |
950 | if (buf) | |
951 | buf_discard(buf); | |
952 | buf = next; | |
953 | continue; | |
954 | reject: | |
955 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
956 | buf = next; | |
957 | } | |
958 | } | |
959 | ||
960 | /* | |
961 | * port_dispatcher(): Dispatcher for messages destinated | |
962 | * to the tipc_port interface. Called with port locked. | |
963 | */ | |
964 | ||
965 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
966 | { | |
967 | buf->next = NULL; | |
968 | spin_lock_bh(&queue_lock); | |
969 | if (msg_queue_head) { | |
970 | msg_queue_tail->next = buf; | |
971 | msg_queue_tail = buf; | |
972 | } else { | |
973 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 974 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
975 | } |
976 | spin_unlock_bh(&queue_lock); | |
977 | return TIPC_OK; | |
978 | } | |
979 | ||
980 | /* | |
981 | * Wake up port after congestion: Called with port locked, | |
982 | * | |
983 | */ | |
984 | ||
985 | static void port_wakeup_sh(unsigned long ref) | |
986 | { | |
987 | struct port *p_ptr; | |
988 | struct user_port *up_ptr; | |
1fc54d8f SR |
989 | tipc_continue_event cb = NULL; |
990 | void *uh = NULL; | |
b97bf3fd | 991 | |
4323add6 | 992 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
993 | if (p_ptr) { |
994 | up_ptr = p_ptr->user_port; | |
995 | if (up_ptr) { | |
996 | cb = up_ptr->continue_event_cb; | |
997 | uh = up_ptr->usr_handle; | |
998 | } | |
4323add6 | 999 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1000 | } |
1001 | if (cb) | |
1002 | cb(uh, ref); | |
1003 | } | |
1004 | ||
1005 | ||
1006 | static void port_wakeup(struct tipc_port *p_ptr) | |
1007 | { | |
4323add6 | 1008 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
1009 | } |
1010 | ||
1011 | void tipc_acknowledge(u32 ref, u32 ack) | |
1012 | { | |
1013 | struct port *p_ptr; | |
1fc54d8f | 1014 | struct sk_buff *buf = NULL; |
b97bf3fd | 1015 | |
4323add6 | 1016 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1017 | if (!p_ptr) |
1018 | return; | |
1019 | if (p_ptr->publ.connected) { | |
1020 | p_ptr->publ.conn_unacked -= ack; | |
1021 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1022 | port_peernode(p_ptr), | |
1023 | ref, | |
1024 | tipc_own_addr, | |
1025 | CONN_MANAGER, | |
1026 | CONN_ACK, | |
1027 | TIPC_OK, | |
1028 | port_out_seqno(p_ptr), | |
1029 | ack); | |
1030 | } | |
4323add6 PL |
1031 | tipc_port_unlock(p_ptr); |
1032 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1033 | } |
1034 | ||
1035 | /* | |
1036 | * tipc_createport(): user level call. Will add port to | |
1037 | * registry if non-zero user_ref. | |
1038 | */ | |
1039 | ||
1040 | int tipc_createport(u32 user_ref, | |
1041 | void *usr_handle, | |
1042 | unsigned int importance, | |
1043 | tipc_msg_err_event error_cb, | |
1044 | tipc_named_msg_err_event named_error_cb, | |
1045 | tipc_conn_shutdown_event conn_error_cb, | |
1046 | tipc_msg_event msg_cb, | |
1047 | tipc_named_msg_event named_msg_cb, | |
1048 | tipc_conn_msg_event conn_msg_cb, | |
1049 | tipc_continue_event continue_event_cb,/* May be zero */ | |
1050 | u32 *portref) | |
1051 | { | |
1052 | struct user_port *up_ptr; | |
1053 | struct port *p_ptr; | |
1054 | u32 ref; | |
1055 | ||
1056 | up_ptr = (struct user_port *)kmalloc(sizeof(*up_ptr), GFP_ATOMIC); | |
1057 | if (up_ptr == NULL) { | |
1058 | return -ENOMEM; | |
1059 | } | |
1fc54d8f | 1060 | ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, importance); |
4323add6 | 1061 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1062 | if (!p_ptr) { |
1063 | kfree(up_ptr); | |
1064 | return -ENOMEM; | |
1065 | } | |
1066 | ||
1067 | p_ptr->user_port = up_ptr; | |
1068 | up_ptr->user_ref = user_ref; | |
1069 | up_ptr->usr_handle = usr_handle; | |
1070 | up_ptr->ref = p_ptr->publ.ref; | |
1071 | up_ptr->err_cb = error_cb; | |
1072 | up_ptr->named_err_cb = named_error_cb; | |
1073 | up_ptr->conn_err_cb = conn_error_cb; | |
1074 | up_ptr->msg_cb = msg_cb; | |
1075 | up_ptr->named_msg_cb = named_msg_cb; | |
1076 | up_ptr->conn_msg_cb = conn_msg_cb; | |
1077 | up_ptr->continue_event_cb = continue_event_cb; | |
1078 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 1079 | tipc_reg_add_port(up_ptr); |
b97bf3fd PL |
1080 | *portref = p_ptr->publ.ref; |
1081 | dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref); | |
4323add6 | 1082 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1083 | return TIPC_OK; |
1084 | } | |
1085 | ||
1086 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) | |
1087 | { | |
1088 | id->ref = ref; | |
1089 | id->node = tipc_own_addr; | |
1090 | return TIPC_OK; | |
1091 | } | |
1092 | ||
1093 | int tipc_portimportance(u32 ref, unsigned int *importance) | |
1094 | { | |
1095 | struct port *p_ptr; | |
1096 | ||
4323add6 | 1097 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1098 | if (!p_ptr) |
1099 | return -EINVAL; | |
1100 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
1101 | spin_unlock_bh(p_ptr->publ.lock); | |
1102 | return TIPC_OK; | |
1103 | } | |
1104 | ||
1105 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
1106 | { | |
1107 | struct port *p_ptr; | |
1108 | ||
1109 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1110 | return -EINVAL; | |
1111 | ||
4323add6 | 1112 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1113 | if (!p_ptr) |
1114 | return -EINVAL; | |
1115 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
1116 | spin_unlock_bh(p_ptr->publ.lock); | |
1117 | return TIPC_OK; | |
1118 | } | |
1119 | ||
1120 | ||
1121 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1122 | { | |
1123 | struct port *p_ptr; | |
1124 | struct publication *publ; | |
1125 | u32 key; | |
1126 | int res = -EINVAL; | |
1127 | ||
4323add6 | 1128 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1129 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1130 | "lower = %u, upper = %u\n", | |
1131 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
1132 | if (!p_ptr) | |
1133 | return -EINVAL; | |
1134 | if (p_ptr->publ.connected) | |
1135 | goto exit; | |
1136 | if (seq->lower > seq->upper) | |
1137 | goto exit; | |
1138 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1139 | goto exit; | |
1140 | key = ref + p_ptr->pub_count + 1; | |
1141 | if (key == ref) { | |
1142 | res = -EADDRINUSE; | |
1143 | goto exit; | |
1144 | } | |
4323add6 PL |
1145 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1146 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1147 | if (publ) { |
1148 | list_add(&publ->pport_list, &p_ptr->publications); | |
1149 | p_ptr->pub_count++; | |
1150 | p_ptr->publ.published = 1; | |
1151 | res = TIPC_OK; | |
1152 | } | |
1153 | exit: | |
4323add6 | 1154 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1155 | return res; |
1156 | } | |
1157 | ||
1158 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1159 | { | |
1160 | struct port *p_ptr; | |
1161 | struct publication *publ; | |
1162 | struct publication *tpubl; | |
1163 | int res = -EINVAL; | |
1164 | ||
4323add6 | 1165 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1166 | if (!p_ptr) |
1167 | return -EINVAL; | |
1168 | if (!p_ptr->publ.published) | |
1169 | goto exit; | |
1170 | if (!seq) { | |
1171 | list_for_each_entry_safe(publ, tpubl, | |
1172 | &p_ptr->publications, pport_list) { | |
4323add6 PL |
1173 | tipc_nametbl_withdraw(publ->type, publ->lower, |
1174 | publ->ref, publ->key); | |
b97bf3fd PL |
1175 | } |
1176 | res = TIPC_OK; | |
1177 | } else { | |
1178 | list_for_each_entry_safe(publ, tpubl, | |
1179 | &p_ptr->publications, pport_list) { | |
1180 | if (publ->scope != scope) | |
1181 | continue; | |
1182 | if (publ->type != seq->type) | |
1183 | continue; | |
1184 | if (publ->lower != seq->lower) | |
1185 | continue; | |
1186 | if (publ->upper != seq->upper) | |
1187 | break; | |
4323add6 PL |
1188 | tipc_nametbl_withdraw(publ->type, publ->lower, |
1189 | publ->ref, publ->key); | |
b97bf3fd PL |
1190 | res = TIPC_OK; |
1191 | break; | |
1192 | } | |
1193 | } | |
1194 | if (list_empty(&p_ptr->publications)) | |
1195 | p_ptr->publ.published = 0; | |
1196 | exit: | |
4323add6 | 1197 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1198 | return res; |
1199 | } | |
1200 | ||
1201 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1202 | { | |
1203 | struct port *p_ptr; | |
1204 | struct tipc_msg *msg; | |
1205 | int res = -EINVAL; | |
1206 | ||
4323add6 | 1207 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1208 | if (!p_ptr) |
1209 | return -EINVAL; | |
1210 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1211 | goto exit; | |
1212 | if (!peer->ref) | |
1213 | goto exit; | |
1214 | ||
1215 | msg = &p_ptr->publ.phdr; | |
1216 | msg_set_destnode(msg, peer->node); | |
1217 | msg_set_destport(msg, peer->ref); | |
1218 | msg_set_orignode(msg, tipc_own_addr); | |
1219 | msg_set_origport(msg, p_ptr->publ.ref); | |
1220 | msg_set_transp_seqno(msg, 42); | |
1221 | msg_set_type(msg, TIPC_CONN_MSG); | |
1222 | if (!may_route(peer->node)) | |
1223 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1224 | else | |
1225 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1226 | ||
1227 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1228 | p_ptr->probing_state = CONFIRMED; | |
1229 | p_ptr->publ.connected = 1; | |
1230 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1231 | ||
4323add6 | 1232 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1233 | (void *)(unsigned long)ref, |
b97bf3fd PL |
1234 | (net_ev_handler)port_handle_node_down); |
1235 | res = TIPC_OK; | |
1236 | exit: | |
4323add6 PL |
1237 | tipc_port_unlock(p_ptr); |
1238 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); | |
b97bf3fd PL |
1239 | return res; |
1240 | } | |
1241 | ||
1242 | /* | |
1243 | * tipc_disconnect(): Disconnect port form peer. | |
1244 | * This is a node local operation. | |
1245 | */ | |
1246 | ||
1247 | int tipc_disconnect(u32 ref) | |
1248 | { | |
1249 | struct port *p_ptr; | |
1250 | int res = -ENOTCONN; | |
1251 | ||
4323add6 | 1252 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1253 | if (!p_ptr) |
1254 | return -EINVAL; | |
1255 | if (p_ptr->publ.connected) { | |
1256 | p_ptr->publ.connected = 0; | |
1257 | /* let timer expire on it's own to avoid deadlock! */ | |
4323add6 | 1258 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
1259 | res = TIPC_OK; |
1260 | } | |
4323add6 | 1261 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1262 | return res; |
1263 | } | |
1264 | ||
1265 | /* | |
1266 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1267 | */ | |
1268 | int tipc_shutdown(u32 ref) | |
1269 | { | |
1270 | struct port *p_ptr; | |
1fc54d8f | 1271 | struct sk_buff *buf = NULL; |
b97bf3fd | 1272 | |
4323add6 | 1273 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1274 | if (!p_ptr) |
1275 | return -EINVAL; | |
1276 | ||
1277 | if (p_ptr->publ.connected) { | |
1278 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1279 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1280 | imp++; | |
1281 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1282 | port_peernode(p_ptr), | |
1283 | ref, | |
1284 | tipc_own_addr, | |
1285 | imp, | |
1286 | TIPC_CONN_MSG, | |
1287 | TIPC_CONN_SHUTDOWN, | |
1288 | port_out_seqno(p_ptr), | |
1289 | 0); | |
1290 | } | |
4323add6 PL |
1291 | tipc_port_unlock(p_ptr); |
1292 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1293 | return tipc_disconnect(ref); |
1294 | } | |
1295 | ||
1296 | int tipc_isconnected(u32 ref, int *isconnected) | |
1297 | { | |
1298 | struct port *p_ptr; | |
1299 | ||
4323add6 | 1300 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1301 | if (!p_ptr) |
1302 | return -EINVAL; | |
1303 | *isconnected = p_ptr->publ.connected; | |
4323add6 | 1304 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1305 | return TIPC_OK; |
1306 | } | |
1307 | ||
1308 | int tipc_peer(u32 ref, struct tipc_portid *peer) | |
1309 | { | |
1310 | struct port *p_ptr; | |
1311 | int res; | |
1312 | ||
4323add6 | 1313 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1314 | if (!p_ptr) |
1315 | return -EINVAL; | |
1316 | if (p_ptr->publ.connected) { | |
1317 | peer->ref = port_peerport(p_ptr); | |
1318 | peer->node = port_peernode(p_ptr); | |
1319 | res = TIPC_OK; | |
1320 | } else | |
1321 | res = -ENOTCONN; | |
4323add6 | 1322 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1323 | return res; |
1324 | } | |
1325 | ||
1326 | int tipc_ref_valid(u32 ref) | |
1327 | { | |
1328 | /* Works irrespective of type */ | |
4323add6 | 1329 | return !!tipc_ref_deref(ref); |
b97bf3fd PL |
1330 | } |
1331 | ||
1332 | ||
1333 | /* | |
4323add6 | 1334 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1335 | * message for this node. |
1336 | */ | |
1337 | ||
4323add6 | 1338 | int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
b97bf3fd PL |
1339 | struct iovec const *msg_sect) |
1340 | { | |
1341 | struct sk_buff *buf; | |
1342 | int res; | |
1343 | ||
1344 | res = msg_build(&sender->publ.phdr, msg_sect, num_sect, | |
1345 | MAX_MSG_SIZE, !sender->user_port, &buf); | |
1346 | if (likely(buf)) | |
4323add6 | 1347 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1348 | return res; |
1349 | } | |
1350 | ||
1351 | /** | |
1352 | * tipc_send - send message sections on connection | |
1353 | */ | |
1354 | ||
1355 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1356 | { | |
1357 | struct port *p_ptr; | |
1358 | u32 destnode; | |
1359 | int res; | |
1360 | ||
4323add6 | 1361 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1362 | if (!p_ptr || !p_ptr->publ.connected) |
1363 | return -EINVAL; | |
1364 | ||
1365 | p_ptr->publ.congested = 1; | |
4323add6 | 1366 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1367 | destnode = port_peernode(p_ptr); |
1368 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1369 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1370 | destnode); | |
b97bf3fd | 1371 | else |
4323add6 | 1372 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1373 | |
1374 | if (likely(res != -ELINKCONG)) { | |
1375 | port_incr_out_seqno(p_ptr); | |
1376 | p_ptr->publ.congested = 0; | |
1377 | p_ptr->sent++; | |
1378 | return res; | |
1379 | } | |
1380 | } | |
1381 | if (port_unreliable(p_ptr)) { | |
1382 | p_ptr->publ.congested = 0; | |
1383 | /* Just calculate msg length and return */ | |
1384 | return msg_calc_data_size(msg_sect, num_sect); | |
1385 | } | |
1386 | return -ELINKCONG; | |
1387 | } | |
1388 | ||
1389 | /** | |
1390 | * tipc_send_buf - send message buffer on connection | |
1391 | */ | |
1392 | ||
1393 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) | |
1394 | { | |
1395 | struct port *p_ptr; | |
1396 | struct tipc_msg *msg; | |
1397 | u32 destnode; | |
1398 | u32 hsz; | |
1399 | u32 sz; | |
1400 | u32 res; | |
1401 | ||
4323add6 | 1402 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1403 | if (!p_ptr || !p_ptr->publ.connected) |
1404 | return -EINVAL; | |
1405 | ||
1406 | msg = &p_ptr->publ.phdr; | |
1407 | hsz = msg_hdr_sz(msg); | |
1408 | sz = hsz + dsz; | |
1409 | msg_set_size(msg, sz); | |
1410 | if (skb_cow(buf, hsz)) | |
1411 | return -ENOMEM; | |
1412 | ||
1413 | skb_push(buf, hsz); | |
1414 | memcpy(buf->data, (unchar *)msg, hsz); | |
1415 | destnode = msg_destnode(msg); | |
1416 | p_ptr->publ.congested = 1; | |
4323add6 | 1417 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1418 | if (likely(destnode != tipc_own_addr)) |
1419 | res = tipc_send_buf_fast(buf, destnode); | |
1420 | else { | |
4323add6 | 1421 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1422 | res = sz; |
1423 | } | |
1424 | if (likely(res != -ELINKCONG)) { | |
1425 | port_incr_out_seqno(p_ptr); | |
1426 | p_ptr->sent++; | |
1427 | p_ptr->publ.congested = 0; | |
1428 | return res; | |
1429 | } | |
1430 | } | |
1431 | if (port_unreliable(p_ptr)) { | |
1432 | p_ptr->publ.congested = 0; | |
1433 | return dsz; | |
1434 | } | |
1435 | return -ELINKCONG; | |
1436 | } | |
1437 | ||
1438 | /** | |
1439 | * tipc_forward2name - forward message sections to port name | |
1440 | */ | |
1441 | ||
1442 | int tipc_forward2name(u32 ref, | |
1443 | struct tipc_name const *name, | |
1444 | u32 domain, | |
1445 | u32 num_sect, | |
1446 | struct iovec const *msg_sect, | |
1447 | struct tipc_portid const *orig, | |
1448 | unsigned int importance) | |
1449 | { | |
1450 | struct port *p_ptr; | |
1451 | struct tipc_msg *msg; | |
1452 | u32 destnode = domain; | |
1453 | u32 destport = 0; | |
1454 | int res; | |
1455 | ||
4323add6 | 1456 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1457 | if (!p_ptr || p_ptr->publ.connected) |
1458 | return -EINVAL; | |
1459 | ||
1460 | msg = &p_ptr->publ.phdr; | |
1461 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1462 | msg_set_orignode(msg, orig->node); | |
1463 | msg_set_origport(msg, orig->ref); | |
1464 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1465 | msg_set_nametype(msg, name->type); | |
1466 | msg_set_nameinst(msg, name->instance); | |
1467 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1468 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1469 | msg_set_importance(msg,importance); | |
4323add6 | 1470 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1471 | msg_set_destnode(msg, destnode); |
1472 | msg_set_destport(msg, destport); | |
1473 | ||
1474 | if (likely(destport || destnode)) { | |
1475 | p_ptr->sent++; | |
1476 | if (likely(destnode == tipc_own_addr)) | |
4323add6 PL |
1477 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1478 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, | |
1479 | destnode); | |
b97bf3fd PL |
1480 | if (likely(res != -ELINKCONG)) |
1481 | return res; | |
1482 | if (port_unreliable(p_ptr)) { | |
1483 | /* Just calculate msg length and return */ | |
1484 | return msg_calc_data_size(msg_sect, num_sect); | |
1485 | } | |
1486 | return -ELINKCONG; | |
1487 | } | |
4323add6 PL |
1488 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
1489 | TIPC_ERR_NO_NAME); | |
b97bf3fd PL |
1490 | } |
1491 | ||
1492 | /** | |
1493 | * tipc_send2name - send message sections to port name | |
1494 | */ | |
1495 | ||
1496 | int tipc_send2name(u32 ref, | |
1497 | struct tipc_name const *name, | |
1498 | unsigned int domain, | |
1499 | unsigned int num_sect, | |
1500 | struct iovec const *msg_sect) | |
1501 | { | |
1502 | struct tipc_portid orig; | |
1503 | ||
1504 | orig.ref = ref; | |
1505 | orig.node = tipc_own_addr; | |
1506 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | |
1507 | TIPC_PORT_IMPORTANCE); | |
1508 | } | |
1509 | ||
1510 | /** | |
1511 | * tipc_forward_buf2name - forward message buffer to port name | |
1512 | */ | |
1513 | ||
1514 | int tipc_forward_buf2name(u32 ref, | |
1515 | struct tipc_name const *name, | |
1516 | u32 domain, | |
1517 | struct sk_buff *buf, | |
1518 | unsigned int dsz, | |
1519 | struct tipc_portid const *orig, | |
1520 | unsigned int importance) | |
1521 | { | |
1522 | struct port *p_ptr; | |
1523 | struct tipc_msg *msg; | |
1524 | u32 destnode = domain; | |
1525 | u32 destport = 0; | |
1526 | int res; | |
1527 | ||
4323add6 | 1528 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1529 | if (!p_ptr || p_ptr->publ.connected) |
1530 | return -EINVAL; | |
1531 | ||
1532 | msg = &p_ptr->publ.phdr; | |
1533 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1534 | msg_set_importance(msg, importance); | |
1535 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1536 | msg_set_orignode(msg, orig->node); | |
1537 | msg_set_origport(msg, orig->ref); | |
1538 | msg_set_nametype(msg, name->type); | |
1539 | msg_set_nameinst(msg, name->instance); | |
1540 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1541 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1542 | msg_set_size(msg, LONG_H_SIZE + dsz); | |
4323add6 | 1543 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1544 | msg_set_destnode(msg, destnode); |
1545 | msg_set_destport(msg, destport); | |
1546 | msg_dbg(msg, "forw2name ==> "); | |
1547 | if (skb_cow(buf, LONG_H_SIZE)) | |
1548 | return -ENOMEM; | |
1549 | skb_push(buf, LONG_H_SIZE); | |
1550 | memcpy(buf->data, (unchar *)msg, LONG_H_SIZE); | |
1551 | msg_dbg(buf_msg(buf),"PREP:"); | |
1552 | if (likely(destport || destnode)) { | |
1553 | p_ptr->sent++; | |
1554 | if (destnode == tipc_own_addr) | |
4323add6 | 1555 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1556 | res = tipc_send_buf_fast(buf, destnode); |
1557 | if (likely(res != -ELINKCONG)) | |
1558 | return res; | |
1559 | if (port_unreliable(p_ptr)) | |
1560 | return dsz; | |
1561 | return -ELINKCONG; | |
1562 | } | |
1563 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); | |
1564 | } | |
1565 | ||
1566 | /** | |
1567 | * tipc_send_buf2name - send message buffer to port name | |
1568 | */ | |
1569 | ||
1570 | int tipc_send_buf2name(u32 ref, | |
1571 | struct tipc_name const *dest, | |
1572 | u32 domain, | |
1573 | struct sk_buff *buf, | |
1574 | unsigned int dsz) | |
1575 | { | |
1576 | struct tipc_portid orig; | |
1577 | ||
1578 | orig.ref = ref; | |
1579 | orig.node = tipc_own_addr; | |
1580 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, | |
1581 | TIPC_PORT_IMPORTANCE); | |
1582 | } | |
1583 | ||
1584 | /** | |
1585 | * tipc_forward2port - forward message sections to port identity | |
1586 | */ | |
1587 | ||
1588 | int tipc_forward2port(u32 ref, | |
1589 | struct tipc_portid const *dest, | |
1590 | unsigned int num_sect, | |
1591 | struct iovec const *msg_sect, | |
1592 | struct tipc_portid const *orig, | |
1593 | unsigned int importance) | |
1594 | { | |
1595 | struct port *p_ptr; | |
1596 | struct tipc_msg *msg; | |
1597 | int res; | |
1598 | ||
4323add6 | 1599 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1600 | if (!p_ptr || p_ptr->publ.connected) |
1601 | return -EINVAL; | |
1602 | ||
1603 | msg = &p_ptr->publ.phdr; | |
1604 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1605 | msg_set_orignode(msg, orig->node); | |
1606 | msg_set_origport(msg, orig->ref); | |
1607 | msg_set_destnode(msg, dest->node); | |
1608 | msg_set_destport(msg, dest->ref); | |
1609 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1610 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1611 | msg_set_importance(msg, importance); | |
1612 | p_ptr->sent++; | |
1613 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1614 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1615 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1616 | if (likely(res != -ELINKCONG)) |
1617 | return res; | |
1618 | if (port_unreliable(p_ptr)) { | |
1619 | /* Just calculate msg length and return */ | |
1620 | return msg_calc_data_size(msg_sect, num_sect); | |
1621 | } | |
1622 | return -ELINKCONG; | |
1623 | } | |
1624 | ||
1625 | /** | |
1626 | * tipc_send2port - send message sections to port identity | |
1627 | */ | |
1628 | ||
1629 | int tipc_send2port(u32 ref, | |
1630 | struct tipc_portid const *dest, | |
1631 | unsigned int num_sect, | |
1632 | struct iovec const *msg_sect) | |
1633 | { | |
1634 | struct tipc_portid orig; | |
1635 | ||
1636 | orig.ref = ref; | |
1637 | orig.node = tipc_own_addr; | |
1638 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, | |
1639 | TIPC_PORT_IMPORTANCE); | |
1640 | } | |
1641 | ||
1642 | /** | |
1643 | * tipc_forward_buf2port - forward message buffer to port identity | |
1644 | */ | |
1645 | int tipc_forward_buf2port(u32 ref, | |
1646 | struct tipc_portid const *dest, | |
1647 | struct sk_buff *buf, | |
1648 | unsigned int dsz, | |
1649 | struct tipc_portid const *orig, | |
1650 | unsigned int importance) | |
1651 | { | |
1652 | struct port *p_ptr; | |
1653 | struct tipc_msg *msg; | |
1654 | int res; | |
1655 | ||
4323add6 | 1656 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1657 | if (!p_ptr || p_ptr->publ.connected) |
1658 | return -EINVAL; | |
1659 | ||
1660 | msg = &p_ptr->publ.phdr; | |
1661 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1662 | msg_set_orignode(msg, orig->node); | |
1663 | msg_set_origport(msg, orig->ref); | |
1664 | msg_set_destnode(msg, dest->node); | |
1665 | msg_set_destport(msg, dest->ref); | |
1666 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1667 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1668 | msg_set_importance(msg, importance); | |
1669 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | |
1670 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1671 | return -ENOMEM; | |
1672 | ||
1673 | skb_push(buf, DIR_MSG_H_SIZE); | |
1674 | memcpy(buf->data, (unchar *)msg, DIR_MSG_H_SIZE); | |
1675 | msg_dbg(msg, "buf2port: "); | |
1676 | p_ptr->sent++; | |
1677 | if (dest->node == tipc_own_addr) | |
4323add6 | 1678 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1679 | res = tipc_send_buf_fast(buf, dest->node); |
1680 | if (likely(res != -ELINKCONG)) | |
1681 | return res; | |
1682 | if (port_unreliable(p_ptr)) | |
1683 | return dsz; | |
1684 | return -ELINKCONG; | |
1685 | } | |
1686 | ||
1687 | /** | |
1688 | * tipc_send_buf2port - send message buffer to port identity | |
1689 | */ | |
1690 | ||
1691 | int tipc_send_buf2port(u32 ref, | |
1692 | struct tipc_portid const *dest, | |
1693 | struct sk_buff *buf, | |
1694 | unsigned int dsz) | |
1695 | { | |
1696 | struct tipc_portid orig; | |
1697 | ||
1698 | orig.ref = ref; | |
1699 | orig.node = tipc_own_addr; | |
1700 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, | |
1701 | TIPC_PORT_IMPORTANCE); | |
1702 | } | |
1703 |