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); |
5307e469 AS |
844 | if (unlikely(!cb)) |
845 | goto reject; | |
b97bf3fd | 846 | if (unlikely(!connected)) { |
84b07c16 | 847 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 848 | goto reject; |
84b07c16 AS |
849 | } else if ((msg_origport(msg) != peer_port) || |
850 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 851 | goto reject; |
c4307285 | 852 | if (unlikely(++p_ptr->publ.conn_unacked >= |
b97bf3fd | 853 | TIPC_FLOW_CONTROL_WIN)) |
c4307285 | 854 | tipc_acknowledge(dref, |
b97bf3fd PL |
855 | p_ptr->publ.conn_unacked); |
856 | skb_pull(buf, msg_hdr_sz(msg)); | |
857 | cb(usr_handle, dref, &buf, msg_data(msg), | |
858 | msg_data_sz(msg)); | |
859 | break; | |
860 | } | |
861 | case TIPC_DIRECT_MSG:{ | |
862 | tipc_msg_event cb = up_ptr->msg_cb; | |
863 | ||
4cec72c8 | 864 | tipc_port_unlock(p_ptr); |
5307e469 | 865 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
866 | goto reject; |
867 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 868 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
869 | msg_data_sz(msg), msg_importance(msg), |
870 | &orig); | |
871 | break; | |
872 | } | |
9688243b | 873 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
874 | case TIPC_NAMED_MSG:{ |
875 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
876 | ||
4cec72c8 | 877 | tipc_port_unlock(p_ptr); |
5307e469 | 878 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
879 | goto reject; |
880 | dseq.type = msg_nametype(msg); | |
881 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
882 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
883 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 884 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 885 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
886 | msg_data_sz(msg), msg_importance(msg), |
887 | &orig, &dseq); | |
888 | break; | |
889 | } | |
890 | } | |
891 | if (buf) | |
892 | buf_discard(buf); | |
893 | buf = next; | |
894 | continue; | |
895 | err: | |
9688243b | 896 | switch (message_type) { |
c4307285 | 897 | |
b97bf3fd | 898 | case TIPC_CONN_MSG:{ |
c4307285 | 899 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
900 | up_ptr->conn_err_cb; |
901 | u32 peer_port = port_peerport(p_ptr); | |
902 | u32 peer_node = port_peernode(p_ptr); | |
903 | ||
4cec72c8 | 904 | tipc_port_unlock(p_ptr); |
5307e469 | 905 | if (!cb || !connected) |
b97bf3fd | 906 | break; |
5307e469 AS |
907 | if ((msg_origport(msg) != peer_port) || |
908 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
909 | break; |
910 | tipc_disconnect(dref); | |
911 | skb_pull(buf, msg_hdr_sz(msg)); | |
912 | cb(usr_handle, dref, &buf, msg_data(msg), | |
913 | msg_data_sz(msg), msg_errcode(msg)); | |
914 | break; | |
915 | } | |
916 | case TIPC_DIRECT_MSG:{ | |
917 | tipc_msg_err_event cb = up_ptr->err_cb; | |
918 | ||
4cec72c8 | 919 | tipc_port_unlock(p_ptr); |
5307e469 | 920 | if (!cb || connected) |
b97bf3fd PL |
921 | break; |
922 | skb_pull(buf, msg_hdr_sz(msg)); | |
923 | cb(usr_handle, dref, &buf, msg_data(msg), | |
924 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
925 | break; | |
926 | } | |
9688243b | 927 | case TIPC_MCAST_MSG: |
b97bf3fd | 928 | case TIPC_NAMED_MSG:{ |
c4307285 | 929 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
930 | up_ptr->named_err_cb; |
931 | ||
4cec72c8 | 932 | tipc_port_unlock(p_ptr); |
5307e469 | 933 | if (!cb || connected) |
b97bf3fd PL |
934 | break; |
935 | dseq.type = msg_nametype(msg); | |
936 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
937 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
938 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 939 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 940 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
941 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
942 | break; | |
943 | } | |
944 | } | |
945 | if (buf) | |
946 | buf_discard(buf); | |
947 | buf = next; | |
948 | continue; | |
949 | reject: | |
950 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
951 | buf = next; | |
952 | } | |
953 | } | |
954 | ||
955 | /* | |
956 | * port_dispatcher(): Dispatcher for messages destinated | |
957 | * to the tipc_port interface. Called with port locked. | |
958 | */ | |
959 | ||
960 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
961 | { | |
962 | buf->next = NULL; | |
963 | spin_lock_bh(&queue_lock); | |
964 | if (msg_queue_head) { | |
965 | msg_queue_tail->next = buf; | |
966 | msg_queue_tail = buf; | |
967 | } else { | |
968 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 969 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
970 | } |
971 | spin_unlock_bh(&queue_lock); | |
972 | return TIPC_OK; | |
973 | } | |
974 | ||
c4307285 | 975 | /* |
b97bf3fd | 976 | * Wake up port after congestion: Called with port locked, |
c4307285 | 977 | * |
b97bf3fd PL |
978 | */ |
979 | ||
980 | static void port_wakeup_sh(unsigned long ref) | |
981 | { | |
982 | struct port *p_ptr; | |
983 | struct user_port *up_ptr; | |
1fc54d8f SR |
984 | tipc_continue_event cb = NULL; |
985 | void *uh = NULL; | |
b97bf3fd | 986 | |
4323add6 | 987 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
988 | if (p_ptr) { |
989 | up_ptr = p_ptr->user_port; | |
990 | if (up_ptr) { | |
991 | cb = up_ptr->continue_event_cb; | |
992 | uh = up_ptr->usr_handle; | |
993 | } | |
4323add6 | 994 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
995 | } |
996 | if (cb) | |
997 | cb(uh, ref); | |
998 | } | |
999 | ||
1000 | ||
1001 | static void port_wakeup(struct tipc_port *p_ptr) | |
1002 | { | |
4323add6 | 1003 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
1004 | } |
1005 | ||
1006 | void tipc_acknowledge(u32 ref, u32 ack) | |
1007 | { | |
1008 | struct port *p_ptr; | |
1fc54d8f | 1009 | struct sk_buff *buf = NULL; |
b97bf3fd | 1010 | |
4323add6 | 1011 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1012 | if (!p_ptr) |
1013 | return; | |
1014 | if (p_ptr->publ.connected) { | |
1015 | p_ptr->publ.conn_unacked -= ack; | |
1016 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1017 | port_peernode(p_ptr), | |
1018 | ref, | |
1019 | tipc_own_addr, | |
1020 | CONN_MANAGER, | |
1021 | CONN_ACK, | |
c4307285 | 1022 | TIPC_OK, |
b97bf3fd PL |
1023 | port_out_seqno(p_ptr), |
1024 | ack); | |
1025 | } | |
4323add6 PL |
1026 | tipc_port_unlock(p_ptr); |
1027 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1028 | } |
1029 | ||
1030 | /* | |
1031 | * tipc_createport(): user level call. Will add port to | |
1032 | * registry if non-zero user_ref. | |
1033 | */ | |
1034 | ||
c4307285 YH |
1035 | int tipc_createport(u32 user_ref, |
1036 | void *usr_handle, | |
1037 | unsigned int importance, | |
1038 | tipc_msg_err_event error_cb, | |
1039 | tipc_named_msg_err_event named_error_cb, | |
1040 | tipc_conn_shutdown_event conn_error_cb, | |
1041 | tipc_msg_event msg_cb, | |
1042 | tipc_named_msg_event named_msg_cb, | |
1043 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
1044 | tipc_continue_event continue_event_cb,/* May be zero */ |
1045 | u32 *portref) | |
1046 | { | |
1047 | struct user_port *up_ptr; | |
c4307285 | 1048 | struct port *p_ptr; |
7ef43eba | 1049 | struct tipc_port *tp_ptr; |
b97bf3fd PL |
1050 | u32 ref; |
1051 | ||
0da974f4 | 1052 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 1053 | if (!up_ptr) { |
a75bf874 | 1054 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
1055 | return -ENOMEM; |
1056 | } | |
7ef43eba AS |
1057 | ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, |
1058 | importance, &tp_ptr); | |
1059 | if (ref == 0) { | |
b97bf3fd PL |
1060 | kfree(up_ptr); |
1061 | return -ENOMEM; | |
1062 | } | |
7ef43eba | 1063 | p_ptr = (struct port *)tp_ptr; |
b97bf3fd PL |
1064 | |
1065 | p_ptr->user_port = up_ptr; | |
1066 | up_ptr->user_ref = user_ref; | |
1067 | up_ptr->usr_handle = usr_handle; | |
1068 | up_ptr->ref = p_ptr->publ.ref; | |
1069 | up_ptr->err_cb = error_cb; | |
1070 | up_ptr->named_err_cb = named_error_cb; | |
1071 | up_ptr->conn_err_cb = conn_error_cb; | |
1072 | up_ptr->msg_cb = msg_cb; | |
1073 | up_ptr->named_msg_cb = named_msg_cb; | |
1074 | up_ptr->conn_msg_cb = conn_msg_cb; | |
1075 | up_ptr->continue_event_cb = continue_event_cb; | |
1076 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 1077 | tipc_reg_add_port(up_ptr); |
b97bf3fd | 1078 | *portref = p_ptr->publ.ref; |
c4307285 | 1079 | dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref); |
4323add6 | 1080 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1081 | return TIPC_OK; |
1082 | } | |
1083 | ||
1084 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) | |
1085 | { | |
1086 | id->ref = ref; | |
1087 | id->node = tipc_own_addr; | |
1088 | return TIPC_OK; | |
1089 | } | |
1090 | ||
1091 | int tipc_portimportance(u32 ref, unsigned int *importance) | |
1092 | { | |
1093 | struct port *p_ptr; | |
c4307285 | 1094 | |
4323add6 | 1095 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1096 | if (!p_ptr) |
1097 | return -EINVAL; | |
1098 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
4cec72c8 | 1099 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1100 | return TIPC_OK; |
1101 | } | |
1102 | ||
1103 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
1104 | { | |
1105 | struct port *p_ptr; | |
1106 | ||
1107 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1108 | return -EINVAL; | |
1109 | ||
4323add6 | 1110 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1111 | if (!p_ptr) |
1112 | return -EINVAL; | |
1113 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
4cec72c8 | 1114 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1115 | return TIPC_OK; |
1116 | } | |
1117 | ||
1118 | ||
1119 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1120 | { | |
1121 | struct port *p_ptr; | |
1122 | struct publication *publ; | |
1123 | u32 key; | |
1124 | int res = -EINVAL; | |
1125 | ||
4323add6 | 1126 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
1127 | if (!p_ptr) |
1128 | return -EINVAL; | |
1129 | ||
b97bf3fd PL |
1130 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1131 | "lower = %u, upper = %u\n", | |
1132 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
b97bf3fd PL |
1133 | if (p_ptr->publ.connected) |
1134 | goto exit; | |
1135 | if (seq->lower > seq->upper) | |
1136 | goto exit; | |
1137 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1138 | goto exit; | |
1139 | key = ref + p_ptr->pub_count + 1; | |
1140 | if (key == ref) { | |
1141 | res = -EADDRINUSE; | |
1142 | goto exit; | |
1143 | } | |
4323add6 PL |
1144 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1145 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1146 | if (publ) { |
1147 | list_add(&publ->pport_list, &p_ptr->publications); | |
1148 | p_ptr->pub_count++; | |
1149 | p_ptr->publ.published = 1; | |
1150 | res = TIPC_OK; | |
1151 | } | |
1152 | exit: | |
4323add6 | 1153 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1154 | return res; |
1155 | } | |
1156 | ||
1157 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1158 | { | |
1159 | struct port *p_ptr; | |
1160 | struct publication *publ; | |
1161 | struct publication *tpubl; | |
1162 | int res = -EINVAL; | |
c4307285 | 1163 | |
4323add6 | 1164 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1165 | if (!p_ptr) |
1166 | return -EINVAL; | |
b97bf3fd | 1167 | if (!seq) { |
c4307285 | 1168 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1169 | &p_ptr->publications, pport_list) { |
c4307285 | 1170 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1171 | publ->ref, publ->key); |
b97bf3fd PL |
1172 | } |
1173 | res = TIPC_OK; | |
1174 | } else { | |
c4307285 | 1175 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1176 | &p_ptr->publications, pport_list) { |
1177 | if (publ->scope != scope) | |
1178 | continue; | |
1179 | if (publ->type != seq->type) | |
1180 | continue; | |
1181 | if (publ->lower != seq->lower) | |
1182 | continue; | |
1183 | if (publ->upper != seq->upper) | |
1184 | break; | |
c4307285 | 1185 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1186 | publ->ref, publ->key); |
b97bf3fd PL |
1187 | res = TIPC_OK; |
1188 | break; | |
1189 | } | |
1190 | } | |
1191 | if (list_empty(&p_ptr->publications)) | |
1192 | p_ptr->publ.published = 0; | |
4323add6 | 1193 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1194 | return res; |
1195 | } | |
1196 | ||
1197 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1198 | { | |
1199 | struct port *p_ptr; | |
1200 | struct tipc_msg *msg; | |
1201 | int res = -EINVAL; | |
1202 | ||
4323add6 | 1203 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1204 | if (!p_ptr) |
1205 | return -EINVAL; | |
1206 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1207 | goto exit; | |
1208 | if (!peer->ref) | |
1209 | goto exit; | |
1210 | ||
1211 | msg = &p_ptr->publ.phdr; | |
1212 | msg_set_destnode(msg, peer->node); | |
1213 | msg_set_destport(msg, peer->ref); | |
1214 | msg_set_orignode(msg, tipc_own_addr); | |
1215 | msg_set_origport(msg, p_ptr->publ.ref); | |
1216 | msg_set_transp_seqno(msg, 42); | |
1217 | msg_set_type(msg, TIPC_CONN_MSG); | |
1218 | if (!may_route(peer->node)) | |
1219 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1220 | else | |
1221 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1222 | ||
1223 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1224 | p_ptr->probing_state = CONFIRMED; | |
1225 | p_ptr->publ.connected = 1; | |
1226 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1227 | ||
4323add6 | 1228 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1229 | (void *)(unsigned long)ref, |
b97bf3fd PL |
1230 | (net_ev_handler)port_handle_node_down); |
1231 | res = TIPC_OK; | |
1232 | exit: | |
4323add6 | 1233 | tipc_port_unlock(p_ptr); |
05646c91 | 1234 | p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1235 | return res; |
1236 | } | |
1237 | ||
0c3141e9 AS |
1238 | /** |
1239 | * tipc_disconnect_port - disconnect port from peer | |
1240 | * | |
1241 | * Port must be locked. | |
1242 | */ | |
1243 | ||
1244 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1245 | { | |
1246 | int res; | |
1247 | ||
1248 | if (tp_ptr->connected) { | |
1249 | tp_ptr->connected = 0; | |
1250 | /* let timer expire on it's own to avoid deadlock! */ | |
1251 | tipc_nodesub_unsubscribe( | |
1252 | &((struct port *)tp_ptr)->subscription); | |
1253 | res = TIPC_OK; | |
1254 | } else { | |
1255 | res = -ENOTCONN; | |
1256 | } | |
1257 | return res; | |
1258 | } | |
1259 | ||
b97bf3fd PL |
1260 | /* |
1261 | * tipc_disconnect(): Disconnect port form peer. | |
1262 | * This is a node local operation. | |
1263 | */ | |
1264 | ||
1265 | int tipc_disconnect(u32 ref) | |
1266 | { | |
1267 | struct port *p_ptr; | |
0c3141e9 | 1268 | int res; |
b97bf3fd | 1269 | |
4323add6 | 1270 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1271 | if (!p_ptr) |
1272 | return -EINVAL; | |
0c3141e9 | 1273 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1274 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1275 | return res; |
1276 | } | |
1277 | ||
1278 | /* | |
1279 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1280 | */ | |
1281 | int tipc_shutdown(u32 ref) | |
1282 | { | |
1283 | struct port *p_ptr; | |
1fc54d8f | 1284 | struct sk_buff *buf = NULL; |
b97bf3fd | 1285 | |
4323add6 | 1286 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1287 | if (!p_ptr) |
1288 | return -EINVAL; | |
1289 | ||
1290 | if (p_ptr->publ.connected) { | |
1291 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1292 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1293 | imp++; | |
1294 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1295 | port_peernode(p_ptr), | |
1296 | ref, | |
1297 | tipc_own_addr, | |
1298 | imp, | |
1299 | TIPC_CONN_MSG, | |
c4307285 | 1300 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1301 | port_out_seqno(p_ptr), |
1302 | 0); | |
1303 | } | |
4323add6 PL |
1304 | tipc_port_unlock(p_ptr); |
1305 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1306 | return tipc_disconnect(ref); |
1307 | } | |
1308 | ||
1309 | int tipc_isconnected(u32 ref, int *isconnected) | |
1310 | { | |
1311 | struct port *p_ptr; | |
c4307285 | 1312 | |
4323add6 | 1313 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1314 | if (!p_ptr) |
1315 | return -EINVAL; | |
1316 | *isconnected = p_ptr->publ.connected; | |
4323add6 | 1317 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1318 | return TIPC_OK; |
1319 | } | |
1320 | ||
1321 | int tipc_peer(u32 ref, struct tipc_portid *peer) | |
1322 | { | |
1323 | struct port *p_ptr; | |
1324 | int res; | |
c4307285 | 1325 | |
4323add6 | 1326 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1327 | if (!p_ptr) |
1328 | return -EINVAL; | |
1329 | if (p_ptr->publ.connected) { | |
1330 | peer->ref = port_peerport(p_ptr); | |
1331 | peer->node = port_peernode(p_ptr); | |
1332 | res = TIPC_OK; | |
1333 | } else | |
1334 | res = -ENOTCONN; | |
4323add6 | 1335 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1336 | return res; |
1337 | } | |
1338 | ||
1339 | int tipc_ref_valid(u32 ref) | |
1340 | { | |
1341 | /* Works irrespective of type */ | |
4323add6 | 1342 | return !!tipc_ref_deref(ref); |
b97bf3fd PL |
1343 | } |
1344 | ||
1345 | ||
1346 | /* | |
4323add6 | 1347 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1348 | * message for this node. |
1349 | */ | |
1350 | ||
4323add6 | 1351 | int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
b97bf3fd PL |
1352 | struct iovec const *msg_sect) |
1353 | { | |
1354 | struct sk_buff *buf; | |
1355 | int res; | |
c4307285 | 1356 | |
b97bf3fd PL |
1357 | res = msg_build(&sender->publ.phdr, msg_sect, num_sect, |
1358 | MAX_MSG_SIZE, !sender->user_port, &buf); | |
1359 | if (likely(buf)) | |
4323add6 | 1360 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1361 | return res; |
1362 | } | |
1363 | ||
1364 | /** | |
1365 | * tipc_send - send message sections on connection | |
1366 | */ | |
1367 | ||
1368 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1369 | { | |
1370 | struct port *p_ptr; | |
1371 | u32 destnode; | |
1372 | int res; | |
1373 | ||
4323add6 | 1374 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1375 | if (!p_ptr || !p_ptr->publ.connected) |
1376 | return -EINVAL; | |
1377 | ||
1378 | p_ptr->publ.congested = 1; | |
4323add6 | 1379 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1380 | destnode = port_peernode(p_ptr); |
1381 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1382 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1383 | destnode); | |
b97bf3fd | 1384 | else |
4323add6 | 1385 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1386 | |
1387 | if (likely(res != -ELINKCONG)) { | |
1388 | port_incr_out_seqno(p_ptr); | |
1389 | p_ptr->publ.congested = 0; | |
1390 | p_ptr->sent++; | |
1391 | return res; | |
1392 | } | |
1393 | } | |
1394 | if (port_unreliable(p_ptr)) { | |
1395 | p_ptr->publ.congested = 0; | |
1396 | /* Just calculate msg length and return */ | |
1397 | return msg_calc_data_size(msg_sect, num_sect); | |
1398 | } | |
1399 | return -ELINKCONG; | |
1400 | } | |
1401 | ||
c4307285 | 1402 | /** |
b97bf3fd PL |
1403 | * tipc_send_buf - send message buffer on connection |
1404 | */ | |
1405 | ||
1406 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) | |
1407 | { | |
1408 | struct port *p_ptr; | |
1409 | struct tipc_msg *msg; | |
1410 | u32 destnode; | |
1411 | u32 hsz; | |
1412 | u32 sz; | |
1413 | u32 res; | |
c4307285 | 1414 | |
4323add6 | 1415 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1416 | if (!p_ptr || !p_ptr->publ.connected) |
1417 | return -EINVAL; | |
1418 | ||
1419 | msg = &p_ptr->publ.phdr; | |
1420 | hsz = msg_hdr_sz(msg); | |
1421 | sz = hsz + dsz; | |
1422 | msg_set_size(msg, sz); | |
1423 | if (skb_cow(buf, hsz)) | |
1424 | return -ENOMEM; | |
1425 | ||
1426 | skb_push(buf, hsz); | |
27d7ff46 | 1427 | skb_copy_to_linear_data(buf, msg, hsz); |
b97bf3fd PL |
1428 | destnode = msg_destnode(msg); |
1429 | p_ptr->publ.congested = 1; | |
4323add6 | 1430 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1431 | if (likely(destnode != tipc_own_addr)) |
1432 | res = tipc_send_buf_fast(buf, destnode); | |
1433 | else { | |
4323add6 | 1434 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1435 | res = sz; |
1436 | } | |
1437 | if (likely(res != -ELINKCONG)) { | |
1438 | port_incr_out_seqno(p_ptr); | |
1439 | p_ptr->sent++; | |
1440 | p_ptr->publ.congested = 0; | |
1441 | return res; | |
1442 | } | |
1443 | } | |
1444 | if (port_unreliable(p_ptr)) { | |
1445 | p_ptr->publ.congested = 0; | |
1446 | return dsz; | |
1447 | } | |
1448 | return -ELINKCONG; | |
1449 | } | |
1450 | ||
1451 | /** | |
1452 | * tipc_forward2name - forward message sections to port name | |
1453 | */ | |
1454 | ||
c4307285 YH |
1455 | int tipc_forward2name(u32 ref, |
1456 | struct tipc_name const *name, | |
b97bf3fd | 1457 | u32 domain, |
c4307285 | 1458 | u32 num_sect, |
b97bf3fd | 1459 | struct iovec const *msg_sect, |
c4307285 | 1460 | struct tipc_portid const *orig, |
b97bf3fd PL |
1461 | unsigned int importance) |
1462 | { | |
1463 | struct port *p_ptr; | |
1464 | struct tipc_msg *msg; | |
1465 | u32 destnode = domain; | |
1466 | u32 destport = 0; | |
1467 | int res; | |
1468 | ||
4323add6 | 1469 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1470 | if (!p_ptr || p_ptr->publ.connected) |
1471 | return -EINVAL; | |
1472 | ||
1473 | msg = &p_ptr->publ.phdr; | |
1474 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1475 | msg_set_orignode(msg, orig->node); | |
1476 | msg_set_origport(msg, orig->ref); | |
1477 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1478 | msg_set_nametype(msg, name->type); | |
1479 | msg_set_nameinst(msg, name->instance); | |
1480 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1481 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1482 | msg_set_importance(msg,importance); | |
4323add6 | 1483 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1484 | msg_set_destnode(msg, destnode); |
1485 | msg_set_destport(msg, destport); | |
1486 | ||
1487 | if (likely(destport || destnode)) { | |
1488 | p_ptr->sent++; | |
1489 | if (likely(destnode == tipc_own_addr)) | |
4323add6 | 1490 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
c4307285 | 1491 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
4323add6 | 1492 | destnode); |
b97bf3fd PL |
1493 | if (likely(res != -ELINKCONG)) |
1494 | return res; | |
1495 | if (port_unreliable(p_ptr)) { | |
1496 | /* Just calculate msg length and return */ | |
1497 | return msg_calc_data_size(msg_sect, num_sect); | |
1498 | } | |
1499 | return -ELINKCONG; | |
1500 | } | |
c4307285 | 1501 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1502 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1503 | } |
1504 | ||
1505 | /** | |
1506 | * tipc_send2name - send message sections to port name | |
1507 | */ | |
1508 | ||
c4307285 | 1509 | int tipc_send2name(u32 ref, |
b97bf3fd | 1510 | struct tipc_name const *name, |
c4307285 YH |
1511 | unsigned int domain, |
1512 | unsigned int num_sect, | |
b97bf3fd PL |
1513 | struct iovec const *msg_sect) |
1514 | { | |
1515 | struct tipc_portid orig; | |
1516 | ||
1517 | orig.ref = ref; | |
1518 | orig.node = tipc_own_addr; | |
1519 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | |
1520 | TIPC_PORT_IMPORTANCE); | |
1521 | } | |
1522 | ||
c4307285 | 1523 | /** |
b97bf3fd PL |
1524 | * tipc_forward_buf2name - forward message buffer to port name |
1525 | */ | |
1526 | ||
1527 | int tipc_forward_buf2name(u32 ref, | |
1528 | struct tipc_name const *name, | |
1529 | u32 domain, | |
1530 | struct sk_buff *buf, | |
1531 | unsigned int dsz, | |
1532 | struct tipc_portid const *orig, | |
1533 | unsigned int importance) | |
1534 | { | |
1535 | struct port *p_ptr; | |
1536 | struct tipc_msg *msg; | |
1537 | u32 destnode = domain; | |
1538 | u32 destport = 0; | |
1539 | int res; | |
1540 | ||
4323add6 | 1541 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1542 | if (!p_ptr || p_ptr->publ.connected) |
1543 | return -EINVAL; | |
1544 | ||
1545 | msg = &p_ptr->publ.phdr; | |
1546 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1547 | msg_set_importance(msg, importance); | |
1548 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1549 | msg_set_orignode(msg, orig->node); | |
1550 | msg_set_origport(msg, orig->ref); | |
1551 | msg_set_nametype(msg, name->type); | |
1552 | msg_set_nameinst(msg, name->instance); | |
1553 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1554 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1555 | msg_set_size(msg, LONG_H_SIZE + dsz); | |
4323add6 | 1556 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1557 | msg_set_destnode(msg, destnode); |
1558 | msg_set_destport(msg, destport); | |
1559 | msg_dbg(msg, "forw2name ==> "); | |
1560 | if (skb_cow(buf, LONG_H_SIZE)) | |
1561 | return -ENOMEM; | |
1562 | skb_push(buf, LONG_H_SIZE); | |
27d7ff46 | 1563 | skb_copy_to_linear_data(buf, msg, LONG_H_SIZE); |
b97bf3fd PL |
1564 | msg_dbg(buf_msg(buf),"PREP:"); |
1565 | if (likely(destport || destnode)) { | |
1566 | p_ptr->sent++; | |
1567 | if (destnode == tipc_own_addr) | |
4323add6 | 1568 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1569 | res = tipc_send_buf_fast(buf, destnode); |
1570 | if (likely(res != -ELINKCONG)) | |
1571 | return res; | |
1572 | if (port_unreliable(p_ptr)) | |
1573 | return dsz; | |
1574 | return -ELINKCONG; | |
1575 | } | |
1576 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); | |
1577 | } | |
1578 | ||
c4307285 | 1579 | /** |
b97bf3fd PL |
1580 | * tipc_send_buf2name - send message buffer to port name |
1581 | */ | |
1582 | ||
c4307285 YH |
1583 | int tipc_send_buf2name(u32 ref, |
1584 | struct tipc_name const *dest, | |
b97bf3fd | 1585 | u32 domain, |
c4307285 | 1586 | struct sk_buff *buf, |
b97bf3fd PL |
1587 | unsigned int dsz) |
1588 | { | |
1589 | struct tipc_portid orig; | |
1590 | ||
1591 | orig.ref = ref; | |
1592 | orig.node = tipc_own_addr; | |
1593 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, | |
1594 | TIPC_PORT_IMPORTANCE); | |
1595 | } | |
1596 | ||
c4307285 | 1597 | /** |
b97bf3fd PL |
1598 | * tipc_forward2port - forward message sections to port identity |
1599 | */ | |
1600 | ||
1601 | int tipc_forward2port(u32 ref, | |
1602 | struct tipc_portid const *dest, | |
c4307285 | 1603 | unsigned int num_sect, |
b97bf3fd | 1604 | struct iovec const *msg_sect, |
c4307285 | 1605 | struct tipc_portid const *orig, |
b97bf3fd PL |
1606 | unsigned int importance) |
1607 | { | |
1608 | struct port *p_ptr; | |
1609 | struct tipc_msg *msg; | |
1610 | int res; | |
1611 | ||
4323add6 | 1612 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1613 | if (!p_ptr || p_ptr->publ.connected) |
1614 | return -EINVAL; | |
1615 | ||
1616 | msg = &p_ptr->publ.phdr; | |
1617 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1618 | msg_set_orignode(msg, orig->node); | |
1619 | msg_set_origport(msg, orig->ref); | |
1620 | msg_set_destnode(msg, dest->node); | |
1621 | msg_set_destport(msg, dest->ref); | |
1622 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1623 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1624 | msg_set_importance(msg, importance); | |
1625 | p_ptr->sent++; | |
1626 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1627 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1628 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1629 | if (likely(res != -ELINKCONG)) |
1630 | return res; | |
1631 | if (port_unreliable(p_ptr)) { | |
1632 | /* Just calculate msg length and return */ | |
1633 | return msg_calc_data_size(msg_sect, num_sect); | |
1634 | } | |
1635 | return -ELINKCONG; | |
1636 | } | |
1637 | ||
c4307285 YH |
1638 | /** |
1639 | * tipc_send2port - send message sections to port identity | |
b97bf3fd PL |
1640 | */ |
1641 | ||
c4307285 | 1642 | int tipc_send2port(u32 ref, |
b97bf3fd | 1643 | struct tipc_portid const *dest, |
c4307285 | 1644 | unsigned int num_sect, |
b97bf3fd PL |
1645 | struct iovec const *msg_sect) |
1646 | { | |
1647 | struct tipc_portid orig; | |
1648 | ||
1649 | orig.ref = ref; | |
1650 | orig.node = tipc_own_addr; | |
c4307285 | 1651 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, |
b97bf3fd PL |
1652 | TIPC_PORT_IMPORTANCE); |
1653 | } | |
1654 | ||
c4307285 | 1655 | /** |
b97bf3fd PL |
1656 | * tipc_forward_buf2port - forward message buffer to port identity |
1657 | */ | |
1658 | int tipc_forward_buf2port(u32 ref, | |
1659 | struct tipc_portid const *dest, | |
1660 | struct sk_buff *buf, | |
1661 | unsigned int dsz, | |
1662 | struct tipc_portid const *orig, | |
1663 | unsigned int importance) | |
1664 | { | |
1665 | struct port *p_ptr; | |
1666 | struct tipc_msg *msg; | |
1667 | int res; | |
1668 | ||
4323add6 | 1669 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1670 | if (!p_ptr || p_ptr->publ.connected) |
1671 | return -EINVAL; | |
1672 | ||
1673 | msg = &p_ptr->publ.phdr; | |
1674 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1675 | msg_set_orignode(msg, orig->node); | |
1676 | msg_set_origport(msg, orig->ref); | |
1677 | msg_set_destnode(msg, dest->node); | |
1678 | msg_set_destport(msg, dest->ref); | |
1679 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1680 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1681 | msg_set_importance(msg, importance); | |
1682 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | |
1683 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1684 | return -ENOMEM; | |
1685 | ||
1686 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1687 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
b97bf3fd PL |
1688 | msg_dbg(msg, "buf2port: "); |
1689 | p_ptr->sent++; | |
1690 | if (dest->node == tipc_own_addr) | |
4323add6 | 1691 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1692 | res = tipc_send_buf_fast(buf, dest->node); |
1693 | if (likely(res != -ELINKCONG)) | |
1694 | return res; | |
1695 | if (port_unreliable(p_ptr)) | |
1696 | return dsz; | |
1697 | return -ELINKCONG; | |
1698 | } | |
1699 | ||
c4307285 | 1700 | /** |
b97bf3fd PL |
1701 | * tipc_send_buf2port - send message buffer to port identity |
1702 | */ | |
1703 | ||
c4307285 | 1704 | int tipc_send_buf2port(u32 ref, |
b97bf3fd | 1705 | struct tipc_portid const *dest, |
c4307285 | 1706 | struct sk_buff *buf, |
b97bf3fd PL |
1707 | unsigned int dsz) |
1708 | { | |
1709 | struct tipc_portid orig; | |
1710 | ||
1711 | orig.ref = ref; | |
1712 | orig.node = tipc_own_addr; | |
c4307285 | 1713 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, |
b97bf3fd PL |
1714 | TIPC_PORT_IMPORTANCE); |
1715 | } | |
1716 |