Commit | Line | Data |
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b97bf3fd PL |
1 | /* |
2 | * net/tipc/port.c: TIPC port code | |
c4307285 | 3 | * |
05646c91 AS |
4 | * Copyright (c) 1992-2007, Ericsson AB |
5 | * Copyright (c) 2004-2007, Wind River Systems | |
b97bf3fd PL |
6 | * All rights reserved. |
7 | * | |
9ea1fd3c | 8 | * Redistribution and use in source and binary forms, with or without |
b97bf3fd PL |
9 | * modification, are permitted provided that the following conditions are met: |
10 | * | |
9ea1fd3c PL |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * 3. Neither the names of the copyright holders nor the names of its | |
17 | * contributors may be used to endorse or promote products derived from | |
18 | * this software without specific prior written permission. | |
b97bf3fd | 19 | * |
9ea1fd3c PL |
20 | * Alternatively, this software may be distributed under the terms of the |
21 | * GNU General Public License ("GPL") version 2 as published by the Free | |
22 | * Software Foundation. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
28 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
b97bf3fd PL |
34 | * POSSIBILITY OF SUCH DAMAGE. |
35 | */ | |
36 | ||
37 | #include "core.h" | |
38 | #include "config.h" | |
39 | #include "dbg.h" | |
40 | #include "port.h" | |
41 | #include "addr.h" | |
42 | #include "link.h" | |
43 | #include "node.h" | |
b97bf3fd PL |
44 | #include "name_table.h" |
45 | #include "user_reg.h" | |
46 | #include "msg.h" | |
47 | #include "bcast.h" | |
48 | ||
49 | /* Connection management: */ | |
50 | #define PROBING_INTERVAL 3600000 /* [ms] => 1 h */ | |
51 | #define CONFIRMED 0 | |
52 | #define PROBING 1 | |
53 | ||
54 | #define MAX_REJECT_SIZE 1024 | |
55 | ||
1fc54d8f SR |
56 | static struct sk_buff *msg_queue_head = NULL; |
57 | static struct sk_buff *msg_queue_tail = NULL; | |
b97bf3fd | 58 | |
34af946a IM |
59 | DEFINE_SPINLOCK(tipc_port_list_lock); |
60 | static DEFINE_SPINLOCK(queue_lock); | |
b97bf3fd | 61 | |
4323add6 | 62 | static LIST_HEAD(ports); |
b97bf3fd PL |
63 | static void port_handle_node_down(unsigned long ref); |
64 | static struct sk_buff* port_build_self_abort_msg(struct port *,u32 err); | |
65 | static struct sk_buff* port_build_peer_abort_msg(struct port *,u32 err); | |
66 | static void port_timeout(unsigned long ref); | |
67 | ||
68 | ||
05790c64 | 69 | static u32 port_peernode(struct port *p_ptr) |
b97bf3fd PL |
70 | { |
71 | return msg_destnode(&p_ptr->publ.phdr); | |
72 | } | |
73 | ||
05790c64 | 74 | static u32 port_peerport(struct port *p_ptr) |
b97bf3fd PL |
75 | { |
76 | return msg_destport(&p_ptr->publ.phdr); | |
77 | } | |
78 | ||
05790c64 | 79 | static u32 port_out_seqno(struct port *p_ptr) |
b97bf3fd PL |
80 | { |
81 | return msg_transp_seqno(&p_ptr->publ.phdr); | |
82 | } | |
83 | ||
05790c64 | 84 | static void port_incr_out_seqno(struct port *p_ptr) |
b97bf3fd PL |
85 | { |
86 | struct tipc_msg *m = &p_ptr->publ.phdr; | |
87 | ||
88 | if (likely(!msg_routed(m))) | |
89 | return; | |
90 | msg_set_transp_seqno(m, (msg_transp_seqno(m) + 1)); | |
91 | } | |
92 | ||
93 | /** | |
94 | * tipc_multicast - send a multicast message to local and remote destinations | |
95 | */ | |
96 | ||
97 | int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, u32 domain, | |
98 | u32 num_sect, struct iovec const *msg_sect) | |
99 | { | |
100 | struct tipc_msg *hdr; | |
101 | struct sk_buff *buf; | |
102 | struct sk_buff *ibuf = NULL; | |
103 | struct port_list dports = {0, NULL, }; | |
4323add6 | 104 | struct port *oport = tipc_port_deref(ref); |
b97bf3fd PL |
105 | int ext_targets; |
106 | int res; | |
107 | ||
108 | if (unlikely(!oport)) | |
109 | return -EINVAL; | |
110 | ||
111 | /* Create multicast message */ | |
112 | ||
113 | hdr = &oport->publ.phdr; | |
114 | msg_set_type(hdr, TIPC_MCAST_MSG); | |
115 | msg_set_nametype(hdr, seq->type); | |
116 | msg_set_namelower(hdr, seq->lower); | |
117 | msg_set_nameupper(hdr, seq->upper); | |
118 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | |
119 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, | |
120 | !oport->user_port, &buf); | |
121 | if (unlikely(!buf)) | |
122 | return res; | |
123 | ||
124 | /* Figure out where to send multicast message */ | |
125 | ||
4323add6 PL |
126 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
127 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
128 | |
129 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
130 | |
131 | if (ext_targets) { | |
132 | if (dports.count != 0) { | |
133 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
134 | if (ibuf == NULL) { | |
4323add6 | 135 | tipc_port_list_free(&dports); |
b97bf3fd PL |
136 | buf_discard(buf); |
137 | return -ENOMEM; | |
138 | } | |
139 | } | |
4323add6 | 140 | res = tipc_bclink_send_msg(buf); |
b97bf3fd PL |
141 | if ((res < 0) && (dports.count != 0)) { |
142 | buf_discard(ibuf); | |
143 | } | |
144 | } else { | |
145 | ibuf = buf; | |
146 | } | |
147 | ||
148 | if (res >= 0) { | |
149 | if (ibuf) | |
4323add6 | 150 | tipc_port_recv_mcast(ibuf, &dports); |
b97bf3fd | 151 | } else { |
4323add6 | 152 | tipc_port_list_free(&dports); |
b97bf3fd PL |
153 | } |
154 | return res; | |
155 | } | |
156 | ||
157 | /** | |
4323add6 | 158 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
c4307285 | 159 | * |
b97bf3fd PL |
160 | * If there is no port list, perform a lookup to create one |
161 | */ | |
162 | ||
4323add6 | 163 | void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp) |
b97bf3fd PL |
164 | { |
165 | struct tipc_msg* msg; | |
166 | struct port_list dports = {0, NULL, }; | |
167 | struct port_list *item = dp; | |
168 | int cnt = 0; | |
169 | ||
b97bf3fd PL |
170 | msg = buf_msg(buf); |
171 | ||
172 | /* Create destination port list, if one wasn't supplied */ | |
173 | ||
174 | if (dp == NULL) { | |
4323add6 | 175 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
176 | msg_namelower(msg), |
177 | msg_nameupper(msg), | |
178 | TIPC_CLUSTER_SCOPE, | |
179 | &dports); | |
180 | item = dp = &dports; | |
181 | } | |
182 | ||
183 | /* Deliver a copy of message to each destination port */ | |
184 | ||
185 | if (dp->count != 0) { | |
186 | if (dp->count == 1) { | |
187 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
188 | tipc_port_recv_msg(buf); |
189 | tipc_port_list_free(dp); | |
b97bf3fd PL |
190 | return; |
191 | } | |
192 | for (; cnt < dp->count; cnt++) { | |
193 | int index = cnt % PLSIZE; | |
194 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
195 | ||
196 | if (b == NULL) { | |
a10bd924 | 197 | warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
198 | msg_dbg(msg, "LOST:"); |
199 | goto exit; | |
200 | } | |
201 | if ((index == 0) && (cnt != 0)) { | |
202 | item = item->next; | |
203 | } | |
204 | msg_set_destport(buf_msg(b),item->ports[index]); | |
4323add6 | 205 | tipc_port_recv_msg(b); |
b97bf3fd PL |
206 | } |
207 | } | |
208 | exit: | |
209 | buf_discard(buf); | |
4323add6 | 210 | tipc_port_list_free(dp); |
b97bf3fd PL |
211 | } |
212 | ||
213 | /** | |
7ef43eba | 214 | * tipc_createport_raw - create a generic TIPC port |
c4307285 | 215 | * |
7ef43eba AS |
216 | * Returns port reference, or 0 if unable to create it |
217 | * | |
218 | * Note: The newly created port is returned in the locked state. | |
b97bf3fd PL |
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 *), | |
7ef43eba AS |
224 | const u32 importance, |
225 | struct tipc_port **tp_ptr) | |
b97bf3fd PL |
226 | { |
227 | struct port *p_ptr; | |
228 | struct tipc_msg *msg; | |
229 | u32 ref; | |
230 | ||
0da974f4 | 231 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 AS |
232 | if (!p_ptr) { |
233 | warn("Port creation failed, no memory\n"); | |
b97bf3fd PL |
234 | return 0; |
235 | } | |
4323add6 | 236 | ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock); |
b97bf3fd | 237 | if (!ref) { |
a10bd924 | 238 | warn("Port creation failed, reference table exhausted\n"); |
b97bf3fd PL |
239 | kfree(p_ptr); |
240 | return 0; | |
241 | } | |
242 | ||
05646c91 AS |
243 | p_ptr->publ.usr_handle = usr_handle; |
244 | p_ptr->publ.max_pkt = MAX_PKT_DEFAULT; | |
b97bf3fd PL |
245 | p_ptr->publ.ref = ref; |
246 | msg = &p_ptr->publ.phdr; | |
06d82c91 AS |
247 | msg_init(msg, TIPC_LOW_IMPORTANCE, TIPC_NAMED_MSG, TIPC_OK, LONG_H_SIZE, |
248 | 0); | |
b97bf3fd PL |
249 | msg_set_orignode(msg, tipc_own_addr); |
250 | msg_set_prevnode(msg, tipc_own_addr); | |
251 | msg_set_origport(msg, ref); | |
252 | msg_set_importance(msg,importance); | |
253 | p_ptr->last_in_seqno = 41; | |
254 | p_ptr->sent = 1; | |
b97bf3fd PL |
255 | INIT_LIST_HEAD(&p_ptr->wait_list); |
256 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
1fc54d8f | 257 | p_ptr->congested_link = NULL; |
b97bf3fd PL |
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 | 266 | spin_unlock_bh(&tipc_port_list_lock); |
7ef43eba | 267 | *tp_ptr = &p_ptr->publ; |
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); |
c4307285 | 278 | if (!p_ptr) |
b97bf3fd PL |
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' | |
c4307285 | 307 | * |
b97bf3fd PL |
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; | |
c4307285 | 341 | |
4323add6 | 342 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
343 | if (!p_ptr) |
344 | return -EINVAL; | |
345 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 346 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
347 | return TIPC_OK; |
348 | } | |
349 | ||
350 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
351 | { | |
352 | struct port *p_ptr; | |
c4307285 | 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; | |
c4307285 | 370 | |
4323add6 | 371 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
372 | if (!p_ptr) |
373 | return -EINVAL; | |
374 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 375 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
376 | return TIPC_OK; |
377 | } | |
378 | ||
379 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
380 | { | |
381 | struct port *p_ptr; | |
c4307285 | 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 | ||
c4307285 YH |
391 | /* |
392 | * port_build_proto_msg(): build a port level protocol | |
393 | * or a connection abortion message. Called with | |
b97bf3fd PL |
394 | * tipc_port lock on. |
395 | */ | |
396 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
397 | u32 origport, u32 orignode, | |
c4307285 | 398 | u32 usr, u32 type, u32 err, |
b97bf3fd PL |
399 | u32 seqno, u32 ack) |
400 | { | |
401 | struct sk_buff *buf; | |
402 | struct tipc_msg *msg; | |
c4307285 | 403 | |
b97bf3fd PL |
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 | ||
b97bf3fd PL |
419 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
420 | { | |
421 | struct tipc_msg *msg = buf_msg(buf); | |
422 | struct sk_buff *rbuf; | |
423 | struct tipc_msg *rmsg; | |
424 | int hdr_sz; | |
425 | u32 imp = msg_importance(msg); | |
426 | u32 data_sz = msg_data_sz(msg); | |
427 | ||
428 | if (data_sz > MAX_REJECT_SIZE) | |
429 | data_sz = MAX_REJECT_SIZE; | |
430 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
431 | imp++; | |
432 | msg_dbg(msg, "port->rej: "); | |
433 | ||
434 | /* discard rejected message if it shouldn't be returned to sender */ | |
435 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
436 | buf_discard(buf); | |
437 | return data_sz; | |
438 | } | |
439 | ||
440 | /* construct rejected message */ | |
441 | if (msg_mcast(msg)) | |
442 | hdr_sz = MCAST_H_SIZE; | |
443 | else | |
444 | hdr_sz = LONG_H_SIZE; | |
445 | rbuf = buf_acquire(data_sz + hdr_sz); | |
446 | if (rbuf == NULL) { | |
447 | buf_discard(buf); | |
448 | return data_sz; | |
449 | } | |
450 | rmsg = buf_msg(rbuf); | |
451 | msg_init(rmsg, imp, msg_type(msg), err, hdr_sz, msg_orignode(msg)); | |
452 | msg_set_destport(rmsg, msg_origport(msg)); | |
453 | msg_set_prevnode(rmsg, tipc_own_addr); | |
454 | msg_set_origport(rmsg, msg_destport(msg)); | |
455 | if (msg_short(msg)) | |
456 | msg_set_orignode(rmsg, tipc_own_addr); | |
457 | else | |
458 | msg_set_orignode(rmsg, msg_destnode(msg)); | |
c4307285 | 459 | msg_set_size(rmsg, data_sz + hdr_sz); |
b97bf3fd PL |
460 | msg_set_nametype(rmsg, msg_nametype(msg)); |
461 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
27d7ff46 | 462 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
463 | |
464 | /* send self-abort message when rejecting on a connected port */ | |
465 | if (msg_connected(msg)) { | |
1fc54d8f | 466 | struct sk_buff *abuf = NULL; |
4323add6 | 467 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
468 | |
469 | if (p_ptr) { | |
470 | if (p_ptr->publ.connected) | |
471 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 472 | tipc_port_unlock(p_ptr); |
b97bf3fd | 473 | } |
4323add6 | 474 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
475 | } |
476 | ||
477 | /* send rejected message */ | |
478 | buf_discard(buf); | |
4323add6 | 479 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
480 | return data_sz; |
481 | } | |
482 | ||
4323add6 PL |
483 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
484 | struct iovec const *msg_sect, u32 num_sect, | |
485 | int err) | |
b97bf3fd PL |
486 | { |
487 | struct sk_buff *buf; | |
488 | int res; | |
489 | ||
c4307285 | 490 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
491 | !p_ptr->user_port, &buf); |
492 | if (!buf) | |
493 | return res; | |
494 | ||
495 | return tipc_reject_msg(buf, err); | |
496 | } | |
497 | ||
498 | static void port_timeout(unsigned long ref) | |
499 | { | |
4323add6 | 500 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 501 | struct sk_buff *buf = NULL; |
b97bf3fd | 502 | |
065fd177 AS |
503 | if (!p_ptr) |
504 | return; | |
505 | ||
506 | if (!p_ptr->publ.connected) { | |
507 | tipc_port_unlock(p_ptr); | |
b97bf3fd | 508 | return; |
065fd177 | 509 | } |
b97bf3fd PL |
510 | |
511 | /* Last probe answered ? */ | |
512 | if (p_ptr->probing_state == PROBING) { | |
513 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
514 | } else { | |
515 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
516 | port_peernode(p_ptr), | |
517 | p_ptr->publ.ref, | |
518 | tipc_own_addr, | |
519 | CONN_MANAGER, | |
520 | CONN_PROBE, | |
c4307285 | 521 | TIPC_OK, |
b97bf3fd PL |
522 | port_out_seqno(p_ptr), |
523 | 0); | |
524 | port_incr_out_seqno(p_ptr); | |
525 | p_ptr->probing_state = PROBING; | |
526 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
527 | } | |
4323add6 PL |
528 | tipc_port_unlock(p_ptr); |
529 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
530 | } |
531 | ||
532 | ||
533 | static void port_handle_node_down(unsigned long ref) | |
534 | { | |
4323add6 | 535 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 536 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
537 | |
538 | if (!p_ptr) | |
539 | return; | |
540 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
541 | tipc_port_unlock(p_ptr); |
542 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
543 | } |
544 | ||
545 | ||
546 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
547 | { | |
548 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
549 | ||
550 | if (!p_ptr->publ.connected) | |
1fc54d8f | 551 | return NULL; |
b97bf3fd PL |
552 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
553 | imp++; | |
554 | return port_build_proto_msg(p_ptr->publ.ref, | |
555 | tipc_own_addr, | |
556 | port_peerport(p_ptr), | |
557 | port_peernode(p_ptr), | |
558 | imp, | |
559 | TIPC_CONN_MSG, | |
c4307285 | 560 | err, |
b97bf3fd PL |
561 | p_ptr->last_in_seqno + 1, |
562 | 0); | |
563 | } | |
564 | ||
565 | ||
566 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
567 | { | |
568 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
569 | ||
570 | if (!p_ptr->publ.connected) | |
1fc54d8f | 571 | return NULL; |
b97bf3fd PL |
572 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
573 | imp++; | |
574 | return port_build_proto_msg(port_peerport(p_ptr), | |
575 | port_peernode(p_ptr), | |
576 | p_ptr->publ.ref, | |
577 | tipc_own_addr, | |
578 | imp, | |
579 | TIPC_CONN_MSG, | |
c4307285 | 580 | err, |
b97bf3fd PL |
581 | port_out_seqno(p_ptr), |
582 | 0); | |
583 | } | |
584 | ||
4323add6 | 585 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
586 | { |
587 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 588 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 589 | u32 err = TIPC_OK; |
1fc54d8f SR |
590 | struct sk_buff *r_buf = NULL; |
591 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd PL |
592 | |
593 | msg_dbg(msg, "PORT<RECV<:"); | |
594 | ||
595 | if (!p_ptr) { | |
596 | err = TIPC_ERR_NO_PORT; | |
597 | } else if (p_ptr->publ.connected) { | |
598 | if (port_peernode(p_ptr) != msg_orignode(msg)) | |
599 | err = TIPC_ERR_NO_PORT; | |
600 | if (port_peerport(p_ptr) != msg_origport(msg)) | |
601 | err = TIPC_ERR_NO_PORT; | |
602 | if (!err && msg_routed(msg)) { | |
603 | u32 seqno = msg_transp_seqno(msg); | |
604 | u32 myno = ++p_ptr->last_in_seqno; | |
605 | if (seqno != myno) { | |
606 | err = TIPC_ERR_NO_PORT; | |
607 | abort_buf = port_build_self_abort_msg(p_ptr, err); | |
608 | } | |
609 | } | |
610 | if (msg_type(msg) == CONN_ACK) { | |
c4307285 | 611 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
612 | p_ptr->publ.congested && |
613 | p_ptr->wakeup; | |
614 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 615 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
616 | goto exit; |
617 | p_ptr->publ.congested = 0; | |
618 | if (!wakeup) | |
619 | goto exit; | |
620 | p_ptr->wakeup(&p_ptr->publ); | |
621 | goto exit; | |
622 | } | |
623 | } else if (p_ptr->publ.published) { | |
624 | err = TIPC_ERR_NO_PORT; | |
625 | } | |
626 | if (err) { | |
627 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
628 | msg_orignode(msg), |
629 | msg_destport(msg), | |
b97bf3fd | 630 | tipc_own_addr, |
06d82c91 | 631 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
632 | TIPC_CONN_MSG, |
633 | err, | |
634 | 0, | |
635 | 0); | |
636 | goto exit; | |
637 | } | |
638 | ||
639 | /* All is fine */ | |
640 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
641 | r_buf = port_build_proto_msg(msg_origport(msg), |
642 | msg_orignode(msg), | |
643 | msg_destport(msg), | |
644 | tipc_own_addr, | |
b97bf3fd PL |
645 | CONN_MANAGER, |
646 | CONN_PROBE_REPLY, | |
647 | TIPC_OK, | |
648 | port_out_seqno(p_ptr), | |
649 | 0); | |
650 | } | |
651 | p_ptr->probing_state = CONFIRMED; | |
652 | port_incr_out_seqno(p_ptr); | |
653 | exit: | |
654 | if (p_ptr) | |
4323add6 PL |
655 | tipc_port_unlock(p_ptr); |
656 | tipc_net_route_msg(r_buf); | |
657 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
658 | buf_discard(buf); |
659 | } | |
660 | ||
661 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
662 | { | |
c4307285 | 663 | struct publication *publ; |
b97bf3fd PL |
664 | |
665 | if (full_id) | |
c4307285 | 666 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 667 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
c4307285 | 668 | tipc_node(tipc_own_addr), p_ptr->publ.ref); |
b97bf3fd PL |
669 | else |
670 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
671 | ||
c4307285 YH |
672 | if (p_ptr->publ.connected) { |
673 | u32 dport = port_peerport(p_ptr); | |
674 | u32 destnode = port_peernode(p_ptr); | |
675 | ||
676 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
677 | tipc_zone(destnode), tipc_cluster(destnode), | |
678 | tipc_node(destnode), dport); | |
679 | if (p_ptr->publ.conn_type != 0) | |
680 | tipc_printf(buf, " via {%u,%u}", | |
681 | p_ptr->publ.conn_type, | |
682 | p_ptr->publ.conn_instance); | |
683 | } | |
684 | else if (p_ptr->publ.published) { | |
685 | tipc_printf(buf, " bound to"); | |
686 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
687 | if (publ->lower == publ->upper) |
688 | tipc_printf(buf, " {%u,%u}", publ->type, | |
689 | publ->lower); | |
690 | else | |
c4307285 | 691 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 692 | publ->lower, publ->upper); |
c4307285 YH |
693 | } |
694 | } | |
695 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
696 | } |
697 | ||
698 | #define MAX_PORT_QUERY 32768 | |
699 | ||
4323add6 | 700 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
701 | { |
702 | struct sk_buff *buf; | |
703 | struct tlv_desc *rep_tlv; | |
704 | struct print_buf pb; | |
705 | struct port *p_ptr; | |
706 | int str_len; | |
707 | ||
4323add6 | 708 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
709 | if (!buf) |
710 | return NULL; | |
711 | rep_tlv = (struct tlv_desc *)buf->data; | |
712 | ||
4323add6 PL |
713 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
714 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
715 | list_for_each_entry(p_ptr, &ports, port_list) { |
716 | spin_lock_bh(p_ptr->publ.lock); | |
717 | port_print(p_ptr, &pb, 0); | |
718 | spin_unlock_bh(p_ptr->publ.lock); | |
719 | } | |
4323add6 PL |
720 | spin_unlock_bh(&tipc_port_list_lock); |
721 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
722 | |
723 | skb_put(buf, TLV_SPACE(str_len)); | |
724 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
725 | ||
726 | return buf; | |
727 | } | |
728 | ||
729 | #if 0 | |
730 | ||
731 | #define MAX_PORT_STATS 2000 | |
732 | ||
733 | struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) | |
734 | { | |
735 | u32 ref; | |
736 | struct port *p_ptr; | |
737 | struct sk_buff *buf; | |
738 | struct tlv_desc *rep_tlv; | |
739 | struct print_buf pb; | |
740 | int str_len; | |
741 | ||
742 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) | |
743 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
744 | ||
745 | ref = *(u32 *)TLV_DATA(req_tlv_area); | |
746 | ref = ntohl(ref); | |
747 | ||
4323add6 | 748 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
749 | if (!p_ptr) |
750 | return cfg_reply_error_string("port not found"); | |
751 | ||
4323add6 | 752 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); |
b97bf3fd | 753 | if (!buf) { |
4323add6 | 754 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
755 | return NULL; |
756 | } | |
757 | rep_tlv = (struct tlv_desc *)buf->data; | |
758 | ||
4323add6 | 759 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); |
b97bf3fd PL |
760 | port_print(p_ptr, &pb, 1); |
761 | /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ | |
4323add6 PL |
762 | tipc_port_unlock(p_ptr); |
763 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
764 | |
765 | skb_put(buf, TLV_SPACE(str_len)); | |
766 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
767 | ||
768 | return buf; | |
769 | } | |
770 | ||
771 | #endif | |
772 | ||
4323add6 | 773 | void tipc_port_reinit(void) |
b97bf3fd PL |
774 | { |
775 | struct port *p_ptr; | |
776 | struct tipc_msg *msg; | |
777 | ||
4323add6 | 778 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
779 | list_for_each_entry(p_ptr, &ports, port_list) { |
780 | msg = &p_ptr->publ.phdr; | |
781 | if (msg_orignode(msg) == tipc_own_addr) | |
782 | break; | |
6d4a6672 | 783 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
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); | |
c4307285 | 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) { |
c4307285 | 837 | |
b97bf3fd PL |
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 | ||
4cec72c8 | 843 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
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; | |
c4307285 | 855 | if (unlikely(++p_ptr->publ.conn_unacked >= |
b97bf3fd | 856 | TIPC_FLOW_CONTROL_WIN)) |
c4307285 | 857 | tipc_acknowledge(dref, |
b97bf3fd PL |
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 | ||
4cec72c8 | 867 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
868 | if (unlikely(connected)) |
869 | goto reject; | |
870 | if (unlikely(!cb)) | |
871 | goto reject; | |
872 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 873 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
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 | ||
4cec72c8 | 882 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
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 | 893 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 894 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
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) { |
c4307285 | 906 | |
b97bf3fd | 907 | case TIPC_CONN_MSG:{ |
c4307285 | 908 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
909 | up_ptr->conn_err_cb; |
910 | u32 peer_port = port_peerport(p_ptr); | |
911 | u32 peer_node = port_peernode(p_ptr); | |
912 | ||
4cec72c8 | 913 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
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 | ||
4cec72c8 | 929 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
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 | 938 | case TIPC_NAMED_MSG:{ |
c4307285 | 939 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
940 | up_ptr->named_err_cb; |
941 | ||
4cec72c8 | 942 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
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 | 949 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 950 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
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 | ||
c4307285 | 985 | /* |
b97bf3fd | 986 | * Wake up port after congestion: Called with port locked, |
c4307285 | 987 | * |
b97bf3fd PL |
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, | |
c4307285 | 1032 | TIPC_OK, |
b97bf3fd PL |
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 | ||
c4307285 YH |
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, | |
b97bf3fd PL |
1054 | tipc_continue_event continue_event_cb,/* May be zero */ |
1055 | u32 *portref) | |
1056 | { | |
1057 | struct user_port *up_ptr; | |
c4307285 | 1058 | struct port *p_ptr; |
7ef43eba | 1059 | struct tipc_port *tp_ptr; |
b97bf3fd PL |
1060 | u32 ref; |
1061 | ||
0da974f4 | 1062 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 1063 | if (!up_ptr) { |
a75bf874 | 1064 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
1065 | return -ENOMEM; |
1066 | } | |
7ef43eba AS |
1067 | ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, |
1068 | importance, &tp_ptr); | |
1069 | if (ref == 0) { | |
b97bf3fd PL |
1070 | kfree(up_ptr); |
1071 | return -ENOMEM; | |
1072 | } | |
7ef43eba | 1073 | p_ptr = (struct port *)tp_ptr; |
b97bf3fd PL |
1074 | |
1075 | p_ptr->user_port = up_ptr; | |
1076 | up_ptr->user_ref = user_ref; | |
1077 | up_ptr->usr_handle = usr_handle; | |
1078 | up_ptr->ref = p_ptr->publ.ref; | |
1079 | up_ptr->err_cb = error_cb; | |
1080 | up_ptr->named_err_cb = named_error_cb; | |
1081 | up_ptr->conn_err_cb = conn_error_cb; | |
1082 | up_ptr->msg_cb = msg_cb; | |
1083 | up_ptr->named_msg_cb = named_msg_cb; | |
1084 | up_ptr->conn_msg_cb = conn_msg_cb; | |
1085 | up_ptr->continue_event_cb = continue_event_cb; | |
1086 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 1087 | tipc_reg_add_port(up_ptr); |
b97bf3fd | 1088 | *portref = p_ptr->publ.ref; |
c4307285 | 1089 | dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref); |
4323add6 | 1090 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1091 | return TIPC_OK; |
1092 | } | |
1093 | ||
1094 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) | |
1095 | { | |
1096 | id->ref = ref; | |
1097 | id->node = tipc_own_addr; | |
1098 | return TIPC_OK; | |
1099 | } | |
1100 | ||
1101 | int tipc_portimportance(u32 ref, unsigned int *importance) | |
1102 | { | |
1103 | struct port *p_ptr; | |
c4307285 | 1104 | |
4323add6 | 1105 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1106 | if (!p_ptr) |
1107 | return -EINVAL; | |
1108 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
4cec72c8 | 1109 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1110 | return TIPC_OK; |
1111 | } | |
1112 | ||
1113 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
1114 | { | |
1115 | struct port *p_ptr; | |
1116 | ||
1117 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1118 | return -EINVAL; | |
1119 | ||
4323add6 | 1120 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1121 | if (!p_ptr) |
1122 | return -EINVAL; | |
1123 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
4cec72c8 | 1124 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1125 | return TIPC_OK; |
1126 | } | |
1127 | ||
1128 | ||
1129 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1130 | { | |
1131 | struct port *p_ptr; | |
1132 | struct publication *publ; | |
1133 | u32 key; | |
1134 | int res = -EINVAL; | |
1135 | ||
4323add6 | 1136 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
1137 | if (!p_ptr) |
1138 | return -EINVAL; | |
1139 | ||
b97bf3fd PL |
1140 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1141 | "lower = %u, upper = %u\n", | |
1142 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
b97bf3fd PL |
1143 | if (p_ptr->publ.connected) |
1144 | goto exit; | |
1145 | if (seq->lower > seq->upper) | |
1146 | goto exit; | |
1147 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1148 | goto exit; | |
1149 | key = ref + p_ptr->pub_count + 1; | |
1150 | if (key == ref) { | |
1151 | res = -EADDRINUSE; | |
1152 | goto exit; | |
1153 | } | |
4323add6 PL |
1154 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1155 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1156 | if (publ) { |
1157 | list_add(&publ->pport_list, &p_ptr->publications); | |
1158 | p_ptr->pub_count++; | |
1159 | p_ptr->publ.published = 1; | |
1160 | res = TIPC_OK; | |
1161 | } | |
1162 | exit: | |
4323add6 | 1163 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1164 | return res; |
1165 | } | |
1166 | ||
1167 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1168 | { | |
1169 | struct port *p_ptr; | |
1170 | struct publication *publ; | |
1171 | struct publication *tpubl; | |
1172 | int res = -EINVAL; | |
c4307285 | 1173 | |
4323add6 | 1174 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1175 | if (!p_ptr) |
1176 | return -EINVAL; | |
b97bf3fd | 1177 | if (!seq) { |
c4307285 | 1178 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1179 | &p_ptr->publications, pport_list) { |
c4307285 | 1180 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1181 | publ->ref, publ->key); |
b97bf3fd PL |
1182 | } |
1183 | res = TIPC_OK; | |
1184 | } else { | |
c4307285 | 1185 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1186 | &p_ptr->publications, pport_list) { |
1187 | if (publ->scope != scope) | |
1188 | continue; | |
1189 | if (publ->type != seq->type) | |
1190 | continue; | |
1191 | if (publ->lower != seq->lower) | |
1192 | continue; | |
1193 | if (publ->upper != seq->upper) | |
1194 | break; | |
c4307285 | 1195 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1196 | publ->ref, publ->key); |
b97bf3fd PL |
1197 | res = TIPC_OK; |
1198 | break; | |
1199 | } | |
1200 | } | |
1201 | if (list_empty(&p_ptr->publications)) | |
1202 | p_ptr->publ.published = 0; | |
4323add6 | 1203 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1204 | return res; |
1205 | } | |
1206 | ||
1207 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1208 | { | |
1209 | struct port *p_ptr; | |
1210 | struct tipc_msg *msg; | |
1211 | int res = -EINVAL; | |
1212 | ||
4323add6 | 1213 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1214 | if (!p_ptr) |
1215 | return -EINVAL; | |
1216 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1217 | goto exit; | |
1218 | if (!peer->ref) | |
1219 | goto exit; | |
1220 | ||
1221 | msg = &p_ptr->publ.phdr; | |
1222 | msg_set_destnode(msg, peer->node); | |
1223 | msg_set_destport(msg, peer->ref); | |
1224 | msg_set_orignode(msg, tipc_own_addr); | |
1225 | msg_set_origport(msg, p_ptr->publ.ref); | |
1226 | msg_set_transp_seqno(msg, 42); | |
1227 | msg_set_type(msg, TIPC_CONN_MSG); | |
1228 | if (!may_route(peer->node)) | |
1229 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1230 | else | |
1231 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1232 | ||
1233 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1234 | p_ptr->probing_state = CONFIRMED; | |
1235 | p_ptr->publ.connected = 1; | |
1236 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1237 | ||
4323add6 | 1238 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1239 | (void *)(unsigned long)ref, |
b97bf3fd PL |
1240 | (net_ev_handler)port_handle_node_down); |
1241 | res = TIPC_OK; | |
1242 | exit: | |
4323add6 | 1243 | tipc_port_unlock(p_ptr); |
05646c91 | 1244 | p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1245 | return res; |
1246 | } | |
1247 | ||
0c3141e9 AS |
1248 | /** |
1249 | * tipc_disconnect_port - disconnect port from peer | |
1250 | * | |
1251 | * Port must be locked. | |
1252 | */ | |
1253 | ||
1254 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1255 | { | |
1256 | int res; | |
1257 | ||
1258 | if (tp_ptr->connected) { | |
1259 | tp_ptr->connected = 0; | |
1260 | /* let timer expire on it's own to avoid deadlock! */ | |
1261 | tipc_nodesub_unsubscribe( | |
1262 | &((struct port *)tp_ptr)->subscription); | |
1263 | res = TIPC_OK; | |
1264 | } else { | |
1265 | res = -ENOTCONN; | |
1266 | } | |
1267 | return res; | |
1268 | } | |
1269 | ||
b97bf3fd PL |
1270 | /* |
1271 | * tipc_disconnect(): Disconnect port form peer. | |
1272 | * This is a node local operation. | |
1273 | */ | |
1274 | ||
1275 | int tipc_disconnect(u32 ref) | |
1276 | { | |
1277 | struct port *p_ptr; | |
0c3141e9 | 1278 | int res; |
b97bf3fd | 1279 | |
4323add6 | 1280 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1281 | if (!p_ptr) |
1282 | return -EINVAL; | |
0c3141e9 | 1283 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1284 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1285 | return res; |
1286 | } | |
1287 | ||
1288 | /* | |
1289 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1290 | */ | |
1291 | int tipc_shutdown(u32 ref) | |
1292 | { | |
1293 | struct port *p_ptr; | |
1fc54d8f | 1294 | struct sk_buff *buf = NULL; |
b97bf3fd | 1295 | |
4323add6 | 1296 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1297 | if (!p_ptr) |
1298 | return -EINVAL; | |
1299 | ||
1300 | if (p_ptr->publ.connected) { | |
1301 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1302 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1303 | imp++; | |
1304 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1305 | port_peernode(p_ptr), | |
1306 | ref, | |
1307 | tipc_own_addr, | |
1308 | imp, | |
1309 | TIPC_CONN_MSG, | |
c4307285 | 1310 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1311 | port_out_seqno(p_ptr), |
1312 | 0); | |
1313 | } | |
4323add6 PL |
1314 | tipc_port_unlock(p_ptr); |
1315 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1316 | return tipc_disconnect(ref); |
1317 | } | |
1318 | ||
1319 | int tipc_isconnected(u32 ref, int *isconnected) | |
1320 | { | |
1321 | struct port *p_ptr; | |
c4307285 | 1322 | |
4323add6 | 1323 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1324 | if (!p_ptr) |
1325 | return -EINVAL; | |
1326 | *isconnected = p_ptr->publ.connected; | |
4323add6 | 1327 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1328 | return TIPC_OK; |
1329 | } | |
1330 | ||
1331 | int tipc_peer(u32 ref, struct tipc_portid *peer) | |
1332 | { | |
1333 | struct port *p_ptr; | |
1334 | int res; | |
c4307285 | 1335 | |
4323add6 | 1336 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1337 | if (!p_ptr) |
1338 | return -EINVAL; | |
1339 | if (p_ptr->publ.connected) { | |
1340 | peer->ref = port_peerport(p_ptr); | |
1341 | peer->node = port_peernode(p_ptr); | |
1342 | res = TIPC_OK; | |
1343 | } else | |
1344 | res = -ENOTCONN; | |
4323add6 | 1345 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1346 | return res; |
1347 | } | |
1348 | ||
1349 | int tipc_ref_valid(u32 ref) | |
1350 | { | |
1351 | /* Works irrespective of type */ | |
4323add6 | 1352 | return !!tipc_ref_deref(ref); |
b97bf3fd PL |
1353 | } |
1354 | ||
1355 | ||
1356 | /* | |
4323add6 | 1357 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1358 | * message for this node. |
1359 | */ | |
1360 | ||
4323add6 | 1361 | int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
b97bf3fd PL |
1362 | struct iovec const *msg_sect) |
1363 | { | |
1364 | struct sk_buff *buf; | |
1365 | int res; | |
c4307285 | 1366 | |
b97bf3fd PL |
1367 | res = msg_build(&sender->publ.phdr, msg_sect, num_sect, |
1368 | MAX_MSG_SIZE, !sender->user_port, &buf); | |
1369 | if (likely(buf)) | |
4323add6 | 1370 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1371 | return res; |
1372 | } | |
1373 | ||
1374 | /** | |
1375 | * tipc_send - send message sections on connection | |
1376 | */ | |
1377 | ||
1378 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1379 | { | |
1380 | struct port *p_ptr; | |
1381 | u32 destnode; | |
1382 | int res; | |
1383 | ||
4323add6 | 1384 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1385 | if (!p_ptr || !p_ptr->publ.connected) |
1386 | return -EINVAL; | |
1387 | ||
1388 | p_ptr->publ.congested = 1; | |
4323add6 | 1389 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1390 | destnode = port_peernode(p_ptr); |
1391 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1392 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1393 | destnode); | |
b97bf3fd | 1394 | else |
4323add6 | 1395 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1396 | |
1397 | if (likely(res != -ELINKCONG)) { | |
1398 | port_incr_out_seqno(p_ptr); | |
1399 | p_ptr->publ.congested = 0; | |
1400 | p_ptr->sent++; | |
1401 | return res; | |
1402 | } | |
1403 | } | |
1404 | if (port_unreliable(p_ptr)) { | |
1405 | p_ptr->publ.congested = 0; | |
1406 | /* Just calculate msg length and return */ | |
1407 | return msg_calc_data_size(msg_sect, num_sect); | |
1408 | } | |
1409 | return -ELINKCONG; | |
1410 | } | |
1411 | ||
c4307285 | 1412 | /** |
b97bf3fd PL |
1413 | * tipc_send_buf - send message buffer on connection |
1414 | */ | |
1415 | ||
1416 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) | |
1417 | { | |
1418 | struct port *p_ptr; | |
1419 | struct tipc_msg *msg; | |
1420 | u32 destnode; | |
1421 | u32 hsz; | |
1422 | u32 sz; | |
1423 | u32 res; | |
c4307285 | 1424 | |
4323add6 | 1425 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1426 | if (!p_ptr || !p_ptr->publ.connected) |
1427 | return -EINVAL; | |
1428 | ||
1429 | msg = &p_ptr->publ.phdr; | |
1430 | hsz = msg_hdr_sz(msg); | |
1431 | sz = hsz + dsz; | |
1432 | msg_set_size(msg, sz); | |
1433 | if (skb_cow(buf, hsz)) | |
1434 | return -ENOMEM; | |
1435 | ||
1436 | skb_push(buf, hsz); | |
27d7ff46 | 1437 | skb_copy_to_linear_data(buf, msg, hsz); |
b97bf3fd PL |
1438 | destnode = msg_destnode(msg); |
1439 | p_ptr->publ.congested = 1; | |
4323add6 | 1440 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1441 | if (likely(destnode != tipc_own_addr)) |
1442 | res = tipc_send_buf_fast(buf, destnode); | |
1443 | else { | |
4323add6 | 1444 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1445 | res = sz; |
1446 | } | |
1447 | if (likely(res != -ELINKCONG)) { | |
1448 | port_incr_out_seqno(p_ptr); | |
1449 | p_ptr->sent++; | |
1450 | p_ptr->publ.congested = 0; | |
1451 | return res; | |
1452 | } | |
1453 | } | |
1454 | if (port_unreliable(p_ptr)) { | |
1455 | p_ptr->publ.congested = 0; | |
1456 | return dsz; | |
1457 | } | |
1458 | return -ELINKCONG; | |
1459 | } | |
1460 | ||
1461 | /** | |
1462 | * tipc_forward2name - forward message sections to port name | |
1463 | */ | |
1464 | ||
c4307285 YH |
1465 | int tipc_forward2name(u32 ref, |
1466 | struct tipc_name const *name, | |
b97bf3fd | 1467 | u32 domain, |
c4307285 | 1468 | u32 num_sect, |
b97bf3fd | 1469 | struct iovec const *msg_sect, |
c4307285 | 1470 | struct tipc_portid const *orig, |
b97bf3fd PL |
1471 | unsigned int importance) |
1472 | { | |
1473 | struct port *p_ptr; | |
1474 | struct tipc_msg *msg; | |
1475 | u32 destnode = domain; | |
1476 | u32 destport = 0; | |
1477 | int res; | |
1478 | ||
4323add6 | 1479 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1480 | if (!p_ptr || p_ptr->publ.connected) |
1481 | return -EINVAL; | |
1482 | ||
1483 | msg = &p_ptr->publ.phdr; | |
1484 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1485 | msg_set_orignode(msg, orig->node); | |
1486 | msg_set_origport(msg, orig->ref); | |
1487 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1488 | msg_set_nametype(msg, name->type); | |
1489 | msg_set_nameinst(msg, name->instance); | |
1490 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1491 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1492 | msg_set_importance(msg,importance); | |
4323add6 | 1493 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1494 | msg_set_destnode(msg, destnode); |
1495 | msg_set_destport(msg, destport); | |
1496 | ||
1497 | if (likely(destport || destnode)) { | |
1498 | p_ptr->sent++; | |
1499 | if (likely(destnode == tipc_own_addr)) | |
4323add6 | 1500 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
c4307285 | 1501 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
4323add6 | 1502 | destnode); |
b97bf3fd PL |
1503 | if (likely(res != -ELINKCONG)) |
1504 | return res; | |
1505 | if (port_unreliable(p_ptr)) { | |
1506 | /* Just calculate msg length and return */ | |
1507 | return msg_calc_data_size(msg_sect, num_sect); | |
1508 | } | |
1509 | return -ELINKCONG; | |
1510 | } | |
c4307285 | 1511 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1512 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1513 | } |
1514 | ||
1515 | /** | |
1516 | * tipc_send2name - send message sections to port name | |
1517 | */ | |
1518 | ||
c4307285 | 1519 | int tipc_send2name(u32 ref, |
b97bf3fd | 1520 | struct tipc_name const *name, |
c4307285 YH |
1521 | unsigned int domain, |
1522 | unsigned int num_sect, | |
b97bf3fd PL |
1523 | struct iovec const *msg_sect) |
1524 | { | |
1525 | struct tipc_portid orig; | |
1526 | ||
1527 | orig.ref = ref; | |
1528 | orig.node = tipc_own_addr; | |
1529 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | |
1530 | TIPC_PORT_IMPORTANCE); | |
1531 | } | |
1532 | ||
c4307285 | 1533 | /** |
b97bf3fd PL |
1534 | * tipc_forward_buf2name - forward message buffer to port name |
1535 | */ | |
1536 | ||
1537 | int tipc_forward_buf2name(u32 ref, | |
1538 | struct tipc_name const *name, | |
1539 | u32 domain, | |
1540 | struct sk_buff *buf, | |
1541 | unsigned int dsz, | |
1542 | struct tipc_portid const *orig, | |
1543 | unsigned int importance) | |
1544 | { | |
1545 | struct port *p_ptr; | |
1546 | struct tipc_msg *msg; | |
1547 | u32 destnode = domain; | |
1548 | u32 destport = 0; | |
1549 | int res; | |
1550 | ||
4323add6 | 1551 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1552 | if (!p_ptr || p_ptr->publ.connected) |
1553 | return -EINVAL; | |
1554 | ||
1555 | msg = &p_ptr->publ.phdr; | |
1556 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1557 | msg_set_importance(msg, importance); | |
1558 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1559 | msg_set_orignode(msg, orig->node); | |
1560 | msg_set_origport(msg, orig->ref); | |
1561 | msg_set_nametype(msg, name->type); | |
1562 | msg_set_nameinst(msg, name->instance); | |
1563 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1564 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1565 | msg_set_size(msg, LONG_H_SIZE + dsz); | |
4323add6 | 1566 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1567 | msg_set_destnode(msg, destnode); |
1568 | msg_set_destport(msg, destport); | |
1569 | msg_dbg(msg, "forw2name ==> "); | |
1570 | if (skb_cow(buf, LONG_H_SIZE)) | |
1571 | return -ENOMEM; | |
1572 | skb_push(buf, LONG_H_SIZE); | |
27d7ff46 | 1573 | skb_copy_to_linear_data(buf, msg, LONG_H_SIZE); |
b97bf3fd PL |
1574 | msg_dbg(buf_msg(buf),"PREP:"); |
1575 | if (likely(destport || destnode)) { | |
1576 | p_ptr->sent++; | |
1577 | if (destnode == tipc_own_addr) | |
4323add6 | 1578 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1579 | res = tipc_send_buf_fast(buf, destnode); |
1580 | if (likely(res != -ELINKCONG)) | |
1581 | return res; | |
1582 | if (port_unreliable(p_ptr)) | |
1583 | return dsz; | |
1584 | return -ELINKCONG; | |
1585 | } | |
1586 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); | |
1587 | } | |
1588 | ||
c4307285 | 1589 | /** |
b97bf3fd PL |
1590 | * tipc_send_buf2name - send message buffer to port name |
1591 | */ | |
1592 | ||
c4307285 YH |
1593 | int tipc_send_buf2name(u32 ref, |
1594 | struct tipc_name const *dest, | |
b97bf3fd | 1595 | u32 domain, |
c4307285 | 1596 | struct sk_buff *buf, |
b97bf3fd PL |
1597 | unsigned int dsz) |
1598 | { | |
1599 | struct tipc_portid orig; | |
1600 | ||
1601 | orig.ref = ref; | |
1602 | orig.node = tipc_own_addr; | |
1603 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, | |
1604 | TIPC_PORT_IMPORTANCE); | |
1605 | } | |
1606 | ||
c4307285 | 1607 | /** |
b97bf3fd PL |
1608 | * tipc_forward2port - forward message sections to port identity |
1609 | */ | |
1610 | ||
1611 | int tipc_forward2port(u32 ref, | |
1612 | struct tipc_portid const *dest, | |
c4307285 | 1613 | unsigned int num_sect, |
b97bf3fd | 1614 | struct iovec const *msg_sect, |
c4307285 | 1615 | struct tipc_portid const *orig, |
b97bf3fd PL |
1616 | unsigned int importance) |
1617 | { | |
1618 | struct port *p_ptr; | |
1619 | struct tipc_msg *msg; | |
1620 | int res; | |
1621 | ||
4323add6 | 1622 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1623 | if (!p_ptr || p_ptr->publ.connected) |
1624 | return -EINVAL; | |
1625 | ||
1626 | msg = &p_ptr->publ.phdr; | |
1627 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1628 | msg_set_orignode(msg, orig->node); | |
1629 | msg_set_origport(msg, orig->ref); | |
1630 | msg_set_destnode(msg, dest->node); | |
1631 | msg_set_destport(msg, dest->ref); | |
1632 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1633 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1634 | msg_set_importance(msg, importance); | |
1635 | p_ptr->sent++; | |
1636 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1637 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1638 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1639 | if (likely(res != -ELINKCONG)) |
1640 | return res; | |
1641 | if (port_unreliable(p_ptr)) { | |
1642 | /* Just calculate msg length and return */ | |
1643 | return msg_calc_data_size(msg_sect, num_sect); | |
1644 | } | |
1645 | return -ELINKCONG; | |
1646 | } | |
1647 | ||
c4307285 YH |
1648 | /** |
1649 | * tipc_send2port - send message sections to port identity | |
b97bf3fd PL |
1650 | */ |
1651 | ||
c4307285 | 1652 | int tipc_send2port(u32 ref, |
b97bf3fd | 1653 | struct tipc_portid const *dest, |
c4307285 | 1654 | unsigned int num_sect, |
b97bf3fd PL |
1655 | struct iovec const *msg_sect) |
1656 | { | |
1657 | struct tipc_portid orig; | |
1658 | ||
1659 | orig.ref = ref; | |
1660 | orig.node = tipc_own_addr; | |
c4307285 | 1661 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, |
b97bf3fd PL |
1662 | TIPC_PORT_IMPORTANCE); |
1663 | } | |
1664 | ||
c4307285 | 1665 | /** |
b97bf3fd PL |
1666 | * tipc_forward_buf2port - forward message buffer to port identity |
1667 | */ | |
1668 | int tipc_forward_buf2port(u32 ref, | |
1669 | struct tipc_portid const *dest, | |
1670 | struct sk_buff *buf, | |
1671 | unsigned int dsz, | |
1672 | struct tipc_portid const *orig, | |
1673 | unsigned int importance) | |
1674 | { | |
1675 | struct port *p_ptr; | |
1676 | struct tipc_msg *msg; | |
1677 | int res; | |
1678 | ||
4323add6 | 1679 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1680 | if (!p_ptr || p_ptr->publ.connected) |
1681 | return -EINVAL; | |
1682 | ||
1683 | msg = &p_ptr->publ.phdr; | |
1684 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1685 | msg_set_orignode(msg, orig->node); | |
1686 | msg_set_origport(msg, orig->ref); | |
1687 | msg_set_destnode(msg, dest->node); | |
1688 | msg_set_destport(msg, dest->ref); | |
1689 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1690 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1691 | msg_set_importance(msg, importance); | |
1692 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | |
1693 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1694 | return -ENOMEM; | |
1695 | ||
1696 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1697 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
b97bf3fd PL |
1698 | msg_dbg(msg, "buf2port: "); |
1699 | p_ptr->sent++; | |
1700 | if (dest->node == tipc_own_addr) | |
4323add6 | 1701 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1702 | res = tipc_send_buf_fast(buf, dest->node); |
1703 | if (likely(res != -ELINKCONG)) | |
1704 | return res; | |
1705 | if (port_unreliable(p_ptr)) | |
1706 | return dsz; | |
1707 | return -ELINKCONG; | |
1708 | } | |
1709 | ||
c4307285 | 1710 | /** |
b97bf3fd PL |
1711 | * tipc_send_buf2port - send message buffer to port identity |
1712 | */ | |
1713 | ||
c4307285 | 1714 | int tipc_send_buf2port(u32 ref, |
b97bf3fd | 1715 | struct tipc_portid const *dest, |
c4307285 | 1716 | struct sk_buff *buf, |
b97bf3fd PL |
1717 | unsigned int dsz) |
1718 | { | |
1719 | struct tipc_portid orig; | |
1720 | ||
1721 | orig.ref = ref; | |
1722 | orig.node = tipc_own_addr; | |
c4307285 | 1723 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, |
b97bf3fd PL |
1724 | TIPC_PORT_IMPORTANCE); |
1725 | } | |
1726 |