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; | |
9bef5438 | 247 | msg_init(msg, importance, TIPC_NAMED_MSG, LONG_H_SIZE, 0); |
b97bf3fd | 248 | msg_set_origport(msg, ref); |
b97bf3fd PL |
249 | p_ptr->last_in_seqno = 41; |
250 | p_ptr->sent = 1; | |
b97bf3fd PL |
251 | INIT_LIST_HEAD(&p_ptr->wait_list); |
252 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
1fc54d8f | 253 | p_ptr->congested_link = NULL; |
b97bf3fd PL |
254 | p_ptr->dispatcher = dispatcher; |
255 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 256 | p_ptr->user_port = NULL; |
b97bf3fd | 257 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 258 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
259 | INIT_LIST_HEAD(&p_ptr->publications); |
260 | INIT_LIST_HEAD(&p_ptr->port_list); | |
261 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 | 262 | spin_unlock_bh(&tipc_port_list_lock); |
7ef43eba | 263 | *tp_ptr = &p_ptr->publ; |
b97bf3fd PL |
264 | return ref; |
265 | } | |
266 | ||
267 | int tipc_deleteport(u32 ref) | |
268 | { | |
269 | struct port *p_ptr; | |
1fc54d8f | 270 | struct sk_buff *buf = NULL; |
b97bf3fd | 271 | |
1fc54d8f | 272 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 273 | p_ptr = tipc_port_lock(ref); |
c4307285 | 274 | if (!p_ptr) |
b97bf3fd PL |
275 | return -EINVAL; |
276 | ||
4323add6 PL |
277 | tipc_ref_discard(ref); |
278 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
279 | |
280 | k_cancel_timer(&p_ptr->timer); | |
281 | if (p_ptr->publ.connected) { | |
282 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
4323add6 | 283 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
284 | } |
285 | if (p_ptr->user_port) { | |
4323add6 | 286 | tipc_reg_remove_port(p_ptr->user_port); |
b97bf3fd PL |
287 | kfree(p_ptr->user_port); |
288 | } | |
289 | ||
4323add6 | 290 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
291 | list_del(&p_ptr->port_list); |
292 | list_del(&p_ptr->wait_list); | |
4323add6 | 293 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
294 | k_term_timer(&p_ptr->timer); |
295 | kfree(p_ptr); | |
296 | dbg("Deleted port %u\n", ref); | |
4323add6 | 297 | tipc_net_route_msg(buf); |
b97bf3fd PL |
298 | return TIPC_OK; |
299 | } | |
300 | ||
301 | /** | |
302 | * tipc_get_port() - return port associated with 'ref' | |
c4307285 | 303 | * |
b97bf3fd PL |
304 | * Note: Port is not locked. |
305 | */ | |
306 | ||
307 | struct tipc_port *tipc_get_port(const u32 ref) | |
308 | { | |
4323add6 | 309 | return (struct tipc_port *)tipc_ref_deref(ref); |
b97bf3fd PL |
310 | } |
311 | ||
312 | /** | |
313 | * tipc_get_handle - return user handle associated to port 'ref' | |
314 | */ | |
315 | ||
316 | void *tipc_get_handle(const u32 ref) | |
317 | { | |
318 | struct port *p_ptr; | |
319 | void * handle; | |
320 | ||
4323add6 | 321 | p_ptr = tipc_port_lock(ref); |
b97bf3fd | 322 | if (!p_ptr) |
1fc54d8f | 323 | return NULL; |
b97bf3fd | 324 | handle = p_ptr->publ.usr_handle; |
4323add6 | 325 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
326 | return handle; |
327 | } | |
328 | ||
05790c64 | 329 | static int port_unreliable(struct port *p_ptr) |
b97bf3fd PL |
330 | { |
331 | return msg_src_droppable(&p_ptr->publ.phdr); | |
332 | } | |
333 | ||
334 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
335 | { | |
336 | struct port *p_ptr; | |
c4307285 | 337 | |
4323add6 | 338 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
339 | if (!p_ptr) |
340 | return -EINVAL; | |
341 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 342 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
343 | return TIPC_OK; |
344 | } | |
345 | ||
346 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
347 | { | |
348 | struct port *p_ptr; | |
c4307285 | 349 | |
4323add6 | 350 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
351 | if (!p_ptr) |
352 | return -EINVAL; | |
353 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | |
4323add6 | 354 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
355 | return TIPC_OK; |
356 | } | |
357 | ||
05790c64 | 358 | static int port_unreturnable(struct port *p_ptr) |
b97bf3fd PL |
359 | { |
360 | return msg_dest_droppable(&p_ptr->publ.phdr); | |
361 | } | |
362 | ||
363 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
364 | { | |
365 | struct port *p_ptr; | |
c4307285 | 366 | |
4323add6 | 367 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
368 | if (!p_ptr) |
369 | return -EINVAL; | |
370 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 371 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
372 | return TIPC_OK; |
373 | } | |
374 | ||
375 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
376 | { | |
377 | struct port *p_ptr; | |
c4307285 | 378 | |
4323add6 | 379 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
380 | if (!p_ptr) |
381 | return -EINVAL; | |
382 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | |
4323add6 | 383 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
384 | return TIPC_OK; |
385 | } | |
386 | ||
c4307285 YH |
387 | /* |
388 | * port_build_proto_msg(): build a port level protocol | |
389 | * or a connection abortion message. Called with | |
b97bf3fd PL |
390 | * tipc_port lock on. |
391 | */ | |
392 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
393 | u32 origport, u32 orignode, | |
c4307285 | 394 | u32 usr, u32 type, u32 err, |
b97bf3fd PL |
395 | u32 seqno, u32 ack) |
396 | { | |
397 | struct sk_buff *buf; | |
398 | struct tipc_msg *msg; | |
c4307285 | 399 | |
b97bf3fd PL |
400 | buf = buf_acquire(LONG_H_SIZE); |
401 | if (buf) { | |
402 | msg = buf_msg(buf); | |
75715217 AS |
403 | msg_init(msg, usr, type, LONG_H_SIZE, destnode); |
404 | msg_set_errcode(msg, err); | |
b97bf3fd PL |
405 | msg_set_destport(msg, destport); |
406 | msg_set_origport(msg, origport); | |
b97bf3fd PL |
407 | msg_set_orignode(msg, orignode); |
408 | msg_set_transp_seqno(msg, seqno); | |
409 | msg_set_msgcnt(msg, ack); | |
410 | msg_dbg(msg, "PORT>SEND>:"); | |
411 | } | |
412 | return buf; | |
413 | } | |
414 | ||
b97bf3fd PL |
415 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
416 | { | |
417 | struct tipc_msg *msg = buf_msg(buf); | |
418 | struct sk_buff *rbuf; | |
419 | struct tipc_msg *rmsg; | |
420 | int hdr_sz; | |
421 | u32 imp = msg_importance(msg); | |
422 | u32 data_sz = msg_data_sz(msg); | |
423 | ||
424 | if (data_sz > MAX_REJECT_SIZE) | |
425 | data_sz = MAX_REJECT_SIZE; | |
426 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
427 | imp++; | |
428 | msg_dbg(msg, "port->rej: "); | |
429 | ||
430 | /* discard rejected message if it shouldn't be returned to sender */ | |
431 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
432 | buf_discard(buf); | |
433 | return data_sz; | |
434 | } | |
435 | ||
436 | /* construct rejected message */ | |
437 | if (msg_mcast(msg)) | |
438 | hdr_sz = MCAST_H_SIZE; | |
439 | else | |
440 | hdr_sz = LONG_H_SIZE; | |
441 | rbuf = buf_acquire(data_sz + hdr_sz); | |
442 | if (rbuf == NULL) { | |
443 | buf_discard(buf); | |
444 | return data_sz; | |
445 | } | |
446 | rmsg = buf_msg(rbuf); | |
75715217 AS |
447 | msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg)); |
448 | msg_set_errcode(rmsg, err); | |
b97bf3fd | 449 | msg_set_destport(rmsg, msg_origport(msg)); |
b97bf3fd PL |
450 | msg_set_origport(rmsg, msg_destport(msg)); |
451 | if (msg_short(msg)) | |
452 | msg_set_orignode(rmsg, tipc_own_addr); | |
453 | else | |
454 | msg_set_orignode(rmsg, msg_destnode(msg)); | |
c4307285 | 455 | msg_set_size(rmsg, data_sz + hdr_sz); |
b97bf3fd PL |
456 | msg_set_nametype(rmsg, msg_nametype(msg)); |
457 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
27d7ff46 | 458 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
459 | |
460 | /* send self-abort message when rejecting on a connected port */ | |
461 | if (msg_connected(msg)) { | |
1fc54d8f | 462 | struct sk_buff *abuf = NULL; |
4323add6 | 463 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
464 | |
465 | if (p_ptr) { | |
466 | if (p_ptr->publ.connected) | |
467 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 468 | tipc_port_unlock(p_ptr); |
b97bf3fd | 469 | } |
4323add6 | 470 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
471 | } |
472 | ||
473 | /* send rejected message */ | |
474 | buf_discard(buf); | |
4323add6 | 475 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
476 | return data_sz; |
477 | } | |
478 | ||
4323add6 PL |
479 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
480 | struct iovec const *msg_sect, u32 num_sect, | |
481 | int err) | |
b97bf3fd PL |
482 | { |
483 | struct sk_buff *buf; | |
484 | int res; | |
485 | ||
c4307285 | 486 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
487 | !p_ptr->user_port, &buf); |
488 | if (!buf) | |
489 | return res; | |
490 | ||
491 | return tipc_reject_msg(buf, err); | |
492 | } | |
493 | ||
494 | static void port_timeout(unsigned long ref) | |
495 | { | |
4323add6 | 496 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 497 | struct sk_buff *buf = NULL; |
b97bf3fd | 498 | |
065fd177 AS |
499 | if (!p_ptr) |
500 | return; | |
501 | ||
502 | if (!p_ptr->publ.connected) { | |
503 | tipc_port_unlock(p_ptr); | |
b97bf3fd | 504 | return; |
065fd177 | 505 | } |
b97bf3fd PL |
506 | |
507 | /* Last probe answered ? */ | |
508 | if (p_ptr->probing_state == PROBING) { | |
509 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
510 | } else { | |
511 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
512 | port_peernode(p_ptr), | |
513 | p_ptr->publ.ref, | |
514 | tipc_own_addr, | |
515 | CONN_MANAGER, | |
516 | CONN_PROBE, | |
c4307285 | 517 | TIPC_OK, |
b97bf3fd PL |
518 | port_out_seqno(p_ptr), |
519 | 0); | |
520 | port_incr_out_seqno(p_ptr); | |
521 | p_ptr->probing_state = PROBING; | |
522 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
523 | } | |
4323add6 PL |
524 | tipc_port_unlock(p_ptr); |
525 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
526 | } |
527 | ||
528 | ||
529 | static void port_handle_node_down(unsigned long ref) | |
530 | { | |
4323add6 | 531 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 532 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
533 | |
534 | if (!p_ptr) | |
535 | return; | |
536 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
537 | tipc_port_unlock(p_ptr); |
538 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
539 | } |
540 | ||
541 | ||
542 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
543 | { | |
544 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
545 | ||
546 | if (!p_ptr->publ.connected) | |
1fc54d8f | 547 | return NULL; |
b97bf3fd PL |
548 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
549 | imp++; | |
550 | return port_build_proto_msg(p_ptr->publ.ref, | |
551 | tipc_own_addr, | |
552 | port_peerport(p_ptr), | |
553 | port_peernode(p_ptr), | |
554 | imp, | |
555 | TIPC_CONN_MSG, | |
c4307285 | 556 | err, |
b97bf3fd PL |
557 | p_ptr->last_in_seqno + 1, |
558 | 0); | |
559 | } | |
560 | ||
561 | ||
562 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
563 | { | |
564 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
565 | ||
566 | if (!p_ptr->publ.connected) | |
1fc54d8f | 567 | return NULL; |
b97bf3fd PL |
568 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
569 | imp++; | |
570 | return port_build_proto_msg(port_peerport(p_ptr), | |
571 | port_peernode(p_ptr), | |
572 | p_ptr->publ.ref, | |
573 | tipc_own_addr, | |
574 | imp, | |
575 | TIPC_CONN_MSG, | |
c4307285 | 576 | err, |
b97bf3fd PL |
577 | port_out_seqno(p_ptr), |
578 | 0); | |
579 | } | |
580 | ||
4323add6 | 581 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
582 | { |
583 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 584 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 585 | u32 err = TIPC_OK; |
1fc54d8f SR |
586 | struct sk_buff *r_buf = NULL; |
587 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd PL |
588 | |
589 | msg_dbg(msg, "PORT<RECV<:"); | |
590 | ||
591 | if (!p_ptr) { | |
592 | err = TIPC_ERR_NO_PORT; | |
593 | } else if (p_ptr->publ.connected) { | |
594 | if (port_peernode(p_ptr) != msg_orignode(msg)) | |
595 | err = TIPC_ERR_NO_PORT; | |
596 | if (port_peerport(p_ptr) != msg_origport(msg)) | |
597 | err = TIPC_ERR_NO_PORT; | |
598 | if (!err && msg_routed(msg)) { | |
599 | u32 seqno = msg_transp_seqno(msg); | |
600 | u32 myno = ++p_ptr->last_in_seqno; | |
601 | if (seqno != myno) { | |
602 | err = TIPC_ERR_NO_PORT; | |
603 | abort_buf = port_build_self_abort_msg(p_ptr, err); | |
604 | } | |
605 | } | |
606 | if (msg_type(msg) == CONN_ACK) { | |
c4307285 | 607 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
608 | p_ptr->publ.congested && |
609 | p_ptr->wakeup; | |
610 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 611 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
612 | goto exit; |
613 | p_ptr->publ.congested = 0; | |
614 | if (!wakeup) | |
615 | goto exit; | |
616 | p_ptr->wakeup(&p_ptr->publ); | |
617 | goto exit; | |
618 | } | |
619 | } else if (p_ptr->publ.published) { | |
620 | err = TIPC_ERR_NO_PORT; | |
621 | } | |
622 | if (err) { | |
623 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
624 | msg_orignode(msg), |
625 | msg_destport(msg), | |
b97bf3fd | 626 | tipc_own_addr, |
06d82c91 | 627 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
628 | TIPC_CONN_MSG, |
629 | err, | |
630 | 0, | |
631 | 0); | |
632 | goto exit; | |
633 | } | |
634 | ||
635 | /* All is fine */ | |
636 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
637 | r_buf = port_build_proto_msg(msg_origport(msg), |
638 | msg_orignode(msg), | |
639 | msg_destport(msg), | |
640 | tipc_own_addr, | |
b97bf3fd PL |
641 | CONN_MANAGER, |
642 | CONN_PROBE_REPLY, | |
643 | TIPC_OK, | |
644 | port_out_seqno(p_ptr), | |
645 | 0); | |
646 | } | |
647 | p_ptr->probing_state = CONFIRMED; | |
648 | port_incr_out_seqno(p_ptr); | |
649 | exit: | |
650 | if (p_ptr) | |
4323add6 PL |
651 | tipc_port_unlock(p_ptr); |
652 | tipc_net_route_msg(r_buf); | |
653 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
654 | buf_discard(buf); |
655 | } | |
656 | ||
657 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
658 | { | |
c4307285 | 659 | struct publication *publ; |
b97bf3fd PL |
660 | |
661 | if (full_id) | |
c4307285 | 662 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 663 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
c4307285 | 664 | tipc_node(tipc_own_addr), p_ptr->publ.ref); |
b97bf3fd PL |
665 | else |
666 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
667 | ||
c4307285 YH |
668 | if (p_ptr->publ.connected) { |
669 | u32 dport = port_peerport(p_ptr); | |
670 | u32 destnode = port_peernode(p_ptr); | |
671 | ||
672 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
673 | tipc_zone(destnode), tipc_cluster(destnode), | |
674 | tipc_node(destnode), dport); | |
675 | if (p_ptr->publ.conn_type != 0) | |
676 | tipc_printf(buf, " via {%u,%u}", | |
677 | p_ptr->publ.conn_type, | |
678 | p_ptr->publ.conn_instance); | |
679 | } | |
680 | else if (p_ptr->publ.published) { | |
681 | tipc_printf(buf, " bound to"); | |
682 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
683 | if (publ->lower == publ->upper) |
684 | tipc_printf(buf, " {%u,%u}", publ->type, | |
685 | publ->lower); | |
686 | else | |
c4307285 | 687 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 688 | publ->lower, publ->upper); |
c4307285 YH |
689 | } |
690 | } | |
691 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
692 | } |
693 | ||
694 | #define MAX_PORT_QUERY 32768 | |
695 | ||
4323add6 | 696 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
697 | { |
698 | struct sk_buff *buf; | |
699 | struct tlv_desc *rep_tlv; | |
700 | struct print_buf pb; | |
701 | struct port *p_ptr; | |
702 | int str_len; | |
703 | ||
4323add6 | 704 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
705 | if (!buf) |
706 | return NULL; | |
707 | rep_tlv = (struct tlv_desc *)buf->data; | |
708 | ||
4323add6 PL |
709 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
710 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
711 | list_for_each_entry(p_ptr, &ports, port_list) { |
712 | spin_lock_bh(p_ptr->publ.lock); | |
713 | port_print(p_ptr, &pb, 0); | |
714 | spin_unlock_bh(p_ptr->publ.lock); | |
715 | } | |
4323add6 PL |
716 | spin_unlock_bh(&tipc_port_list_lock); |
717 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
718 | |
719 | skb_put(buf, TLV_SPACE(str_len)); | |
720 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
721 | ||
722 | return buf; | |
723 | } | |
724 | ||
725 | #if 0 | |
726 | ||
727 | #define MAX_PORT_STATS 2000 | |
728 | ||
729 | struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) | |
730 | { | |
731 | u32 ref; | |
732 | struct port *p_ptr; | |
733 | struct sk_buff *buf; | |
734 | struct tlv_desc *rep_tlv; | |
735 | struct print_buf pb; | |
736 | int str_len; | |
737 | ||
738 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) | |
739 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
740 | ||
741 | ref = *(u32 *)TLV_DATA(req_tlv_area); | |
742 | ref = ntohl(ref); | |
743 | ||
4323add6 | 744 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
745 | if (!p_ptr) |
746 | return cfg_reply_error_string("port not found"); | |
747 | ||
4323add6 | 748 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); |
b97bf3fd | 749 | if (!buf) { |
4323add6 | 750 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
751 | return NULL; |
752 | } | |
753 | rep_tlv = (struct tlv_desc *)buf->data; | |
754 | ||
4323add6 | 755 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); |
b97bf3fd PL |
756 | port_print(p_ptr, &pb, 1); |
757 | /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ | |
4323add6 PL |
758 | tipc_port_unlock(p_ptr); |
759 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
760 | |
761 | skb_put(buf, TLV_SPACE(str_len)); | |
762 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
763 | ||
764 | return buf; | |
765 | } | |
766 | ||
767 | #endif | |
768 | ||
4323add6 | 769 | void tipc_port_reinit(void) |
b97bf3fd PL |
770 | { |
771 | struct port *p_ptr; | |
772 | struct tipc_msg *msg; | |
773 | ||
4323add6 | 774 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
775 | list_for_each_entry(p_ptr, &ports, port_list) { |
776 | msg = &p_ptr->publ.phdr; | |
777 | if (msg_orignode(msg) == tipc_own_addr) | |
778 | break; | |
6d4a6672 | 779 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
780 | msg_set_orignode(msg, tipc_own_addr); |
781 | } | |
4323add6 | 782 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
783 | } |
784 | ||
785 | ||
786 | /* | |
787 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
788 | * to the tipc_port interface. | |
789 | */ | |
790 | ||
791 | static void port_dispatcher_sigh(void *dummy) | |
792 | { | |
793 | struct sk_buff *buf; | |
794 | ||
795 | spin_lock_bh(&queue_lock); | |
796 | buf = msg_queue_head; | |
1fc54d8f | 797 | msg_queue_head = NULL; |
b97bf3fd PL |
798 | spin_unlock_bh(&queue_lock); |
799 | ||
800 | while (buf) { | |
801 | struct port *p_ptr; | |
802 | struct user_port *up_ptr; | |
803 | struct tipc_portid orig; | |
804 | struct tipc_name_seq dseq; | |
805 | void *usr_handle; | |
806 | int connected; | |
807 | int published; | |
9688243b | 808 | u32 message_type; |
b97bf3fd PL |
809 | |
810 | struct sk_buff *next = buf->next; | |
811 | struct tipc_msg *msg = buf_msg(buf); | |
812 | u32 dref = msg_destport(msg); | |
c4307285 | 813 | |
9688243b AS |
814 | message_type = msg_type(msg); |
815 | if (message_type > TIPC_DIRECT_MSG) | |
816 | goto reject; /* Unsupported message type */ | |
817 | ||
4323add6 | 818 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
819 | if (!p_ptr) |
820 | goto reject; /* Port deleted while msg in queue */ | |
821 | ||
b97bf3fd PL |
822 | orig.ref = msg_origport(msg); |
823 | orig.node = msg_orignode(msg); | |
824 | up_ptr = p_ptr->user_port; | |
825 | usr_handle = up_ptr->usr_handle; | |
826 | connected = p_ptr->publ.connected; | |
827 | published = p_ptr->publ.published; | |
828 | ||
829 | if (unlikely(msg_errcode(msg))) | |
830 | goto err; | |
831 | ||
9688243b | 832 | switch (message_type) { |
c4307285 | 833 | |
b97bf3fd PL |
834 | case TIPC_CONN_MSG:{ |
835 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
836 | u32 peer_port = port_peerport(p_ptr); | |
837 | u32 peer_node = port_peernode(p_ptr); | |
838 | ||
4cec72c8 | 839 | tipc_port_unlock(p_ptr); |
5307e469 AS |
840 | if (unlikely(!cb)) |
841 | goto reject; | |
b97bf3fd | 842 | if (unlikely(!connected)) { |
84b07c16 | 843 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 844 | goto reject; |
84b07c16 AS |
845 | } else if ((msg_origport(msg) != peer_port) || |
846 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 847 | goto reject; |
c4307285 | 848 | if (unlikely(++p_ptr->publ.conn_unacked >= |
b97bf3fd | 849 | TIPC_FLOW_CONTROL_WIN)) |
c4307285 | 850 | tipc_acknowledge(dref, |
b97bf3fd PL |
851 | p_ptr->publ.conn_unacked); |
852 | skb_pull(buf, msg_hdr_sz(msg)); | |
853 | cb(usr_handle, dref, &buf, msg_data(msg), | |
854 | msg_data_sz(msg)); | |
855 | break; | |
856 | } | |
857 | case TIPC_DIRECT_MSG:{ | |
858 | tipc_msg_event cb = up_ptr->msg_cb; | |
859 | ||
4cec72c8 | 860 | tipc_port_unlock(p_ptr); |
5307e469 | 861 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
862 | goto reject; |
863 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 864 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
865 | msg_data_sz(msg), msg_importance(msg), |
866 | &orig); | |
867 | break; | |
868 | } | |
9688243b | 869 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
870 | case TIPC_NAMED_MSG:{ |
871 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
872 | ||
4cec72c8 | 873 | tipc_port_unlock(p_ptr); |
5307e469 | 874 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
875 | goto reject; |
876 | dseq.type = msg_nametype(msg); | |
877 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
878 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
879 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 880 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 881 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
882 | msg_data_sz(msg), msg_importance(msg), |
883 | &orig, &dseq); | |
884 | break; | |
885 | } | |
886 | } | |
887 | if (buf) | |
888 | buf_discard(buf); | |
889 | buf = next; | |
890 | continue; | |
891 | err: | |
9688243b | 892 | switch (message_type) { |
c4307285 | 893 | |
b97bf3fd | 894 | case TIPC_CONN_MSG:{ |
c4307285 | 895 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
896 | up_ptr->conn_err_cb; |
897 | u32 peer_port = port_peerport(p_ptr); | |
898 | u32 peer_node = port_peernode(p_ptr); | |
899 | ||
4cec72c8 | 900 | tipc_port_unlock(p_ptr); |
5307e469 | 901 | if (!cb || !connected) |
b97bf3fd | 902 | break; |
5307e469 AS |
903 | if ((msg_origport(msg) != peer_port) || |
904 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
905 | break; |
906 | tipc_disconnect(dref); | |
907 | skb_pull(buf, msg_hdr_sz(msg)); | |
908 | cb(usr_handle, dref, &buf, msg_data(msg), | |
909 | msg_data_sz(msg), msg_errcode(msg)); | |
910 | break; | |
911 | } | |
912 | case TIPC_DIRECT_MSG:{ | |
913 | tipc_msg_err_event cb = up_ptr->err_cb; | |
914 | ||
4cec72c8 | 915 | tipc_port_unlock(p_ptr); |
5307e469 | 916 | if (!cb || connected) |
b97bf3fd PL |
917 | break; |
918 | skb_pull(buf, msg_hdr_sz(msg)); | |
919 | cb(usr_handle, dref, &buf, msg_data(msg), | |
920 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
921 | break; | |
922 | } | |
9688243b | 923 | case TIPC_MCAST_MSG: |
b97bf3fd | 924 | case TIPC_NAMED_MSG:{ |
c4307285 | 925 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
926 | up_ptr->named_err_cb; |
927 | ||
4cec72c8 | 928 | tipc_port_unlock(p_ptr); |
5307e469 | 929 | if (!cb || connected) |
b97bf3fd PL |
930 | break; |
931 | dseq.type = msg_nametype(msg); | |
932 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
933 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
934 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 935 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 936 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
937 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
938 | break; | |
939 | } | |
940 | } | |
941 | if (buf) | |
942 | buf_discard(buf); | |
943 | buf = next; | |
944 | continue; | |
945 | reject: | |
946 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
947 | buf = next; | |
948 | } | |
949 | } | |
950 | ||
951 | /* | |
952 | * port_dispatcher(): Dispatcher for messages destinated | |
953 | * to the tipc_port interface. Called with port locked. | |
954 | */ | |
955 | ||
956 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
957 | { | |
958 | buf->next = NULL; | |
959 | spin_lock_bh(&queue_lock); | |
960 | if (msg_queue_head) { | |
961 | msg_queue_tail->next = buf; | |
962 | msg_queue_tail = buf; | |
963 | } else { | |
964 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 965 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
966 | } |
967 | spin_unlock_bh(&queue_lock); | |
968 | return TIPC_OK; | |
969 | } | |
970 | ||
c4307285 | 971 | /* |
b97bf3fd | 972 | * Wake up port after congestion: Called with port locked, |
c4307285 | 973 | * |
b97bf3fd PL |
974 | */ |
975 | ||
976 | static void port_wakeup_sh(unsigned long ref) | |
977 | { | |
978 | struct port *p_ptr; | |
979 | struct user_port *up_ptr; | |
1fc54d8f SR |
980 | tipc_continue_event cb = NULL; |
981 | void *uh = NULL; | |
b97bf3fd | 982 | |
4323add6 | 983 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
984 | if (p_ptr) { |
985 | up_ptr = p_ptr->user_port; | |
986 | if (up_ptr) { | |
987 | cb = up_ptr->continue_event_cb; | |
988 | uh = up_ptr->usr_handle; | |
989 | } | |
4323add6 | 990 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
991 | } |
992 | if (cb) | |
993 | cb(uh, ref); | |
994 | } | |
995 | ||
996 | ||
997 | static void port_wakeup(struct tipc_port *p_ptr) | |
998 | { | |
4323add6 | 999 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
1000 | } |
1001 | ||
1002 | void tipc_acknowledge(u32 ref, u32 ack) | |
1003 | { | |
1004 | struct port *p_ptr; | |
1fc54d8f | 1005 | struct sk_buff *buf = NULL; |
b97bf3fd | 1006 | |
4323add6 | 1007 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1008 | if (!p_ptr) |
1009 | return; | |
1010 | if (p_ptr->publ.connected) { | |
1011 | p_ptr->publ.conn_unacked -= ack; | |
1012 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1013 | port_peernode(p_ptr), | |
1014 | ref, | |
1015 | tipc_own_addr, | |
1016 | CONN_MANAGER, | |
1017 | CONN_ACK, | |
c4307285 | 1018 | TIPC_OK, |
b97bf3fd PL |
1019 | port_out_seqno(p_ptr), |
1020 | ack); | |
1021 | } | |
4323add6 PL |
1022 | tipc_port_unlock(p_ptr); |
1023 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1024 | } |
1025 | ||
1026 | /* | |
1027 | * tipc_createport(): user level call. Will add port to | |
1028 | * registry if non-zero user_ref. | |
1029 | */ | |
1030 | ||
c4307285 YH |
1031 | int tipc_createport(u32 user_ref, |
1032 | void *usr_handle, | |
1033 | unsigned int importance, | |
1034 | tipc_msg_err_event error_cb, | |
1035 | tipc_named_msg_err_event named_error_cb, | |
1036 | tipc_conn_shutdown_event conn_error_cb, | |
1037 | tipc_msg_event msg_cb, | |
1038 | tipc_named_msg_event named_msg_cb, | |
1039 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
1040 | tipc_continue_event continue_event_cb,/* May be zero */ |
1041 | u32 *portref) | |
1042 | { | |
1043 | struct user_port *up_ptr; | |
c4307285 | 1044 | struct port *p_ptr; |
7ef43eba | 1045 | struct tipc_port *tp_ptr; |
b97bf3fd PL |
1046 | u32 ref; |
1047 | ||
0da974f4 | 1048 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 1049 | if (!up_ptr) { |
a75bf874 | 1050 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
1051 | return -ENOMEM; |
1052 | } | |
7ef43eba AS |
1053 | ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, |
1054 | importance, &tp_ptr); | |
1055 | if (ref == 0) { | |
b97bf3fd PL |
1056 | kfree(up_ptr); |
1057 | return -ENOMEM; | |
1058 | } | |
7ef43eba | 1059 | p_ptr = (struct port *)tp_ptr; |
b97bf3fd PL |
1060 | |
1061 | p_ptr->user_port = up_ptr; | |
1062 | up_ptr->user_ref = user_ref; | |
1063 | up_ptr->usr_handle = usr_handle; | |
1064 | up_ptr->ref = p_ptr->publ.ref; | |
1065 | up_ptr->err_cb = error_cb; | |
1066 | up_ptr->named_err_cb = named_error_cb; | |
1067 | up_ptr->conn_err_cb = conn_error_cb; | |
1068 | up_ptr->msg_cb = msg_cb; | |
1069 | up_ptr->named_msg_cb = named_msg_cb; | |
1070 | up_ptr->conn_msg_cb = conn_msg_cb; | |
1071 | up_ptr->continue_event_cb = continue_event_cb; | |
1072 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 1073 | tipc_reg_add_port(up_ptr); |
b97bf3fd | 1074 | *portref = p_ptr->publ.ref; |
c4307285 | 1075 | dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref); |
4323add6 | 1076 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1077 | return TIPC_OK; |
1078 | } | |
1079 | ||
1080 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) | |
1081 | { | |
1082 | id->ref = ref; | |
1083 | id->node = tipc_own_addr; | |
1084 | return TIPC_OK; | |
1085 | } | |
1086 | ||
1087 | int tipc_portimportance(u32 ref, unsigned int *importance) | |
1088 | { | |
1089 | struct port *p_ptr; | |
c4307285 | 1090 | |
4323add6 | 1091 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1092 | if (!p_ptr) |
1093 | return -EINVAL; | |
1094 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
4cec72c8 | 1095 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1096 | return TIPC_OK; |
1097 | } | |
1098 | ||
1099 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
1100 | { | |
1101 | struct port *p_ptr; | |
1102 | ||
1103 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1104 | return -EINVAL; | |
1105 | ||
4323add6 | 1106 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1107 | if (!p_ptr) |
1108 | return -EINVAL; | |
1109 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
4cec72c8 | 1110 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1111 | return TIPC_OK; |
1112 | } | |
1113 | ||
1114 | ||
1115 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1116 | { | |
1117 | struct port *p_ptr; | |
1118 | struct publication *publ; | |
1119 | u32 key; | |
1120 | int res = -EINVAL; | |
1121 | ||
4323add6 | 1122 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
1123 | if (!p_ptr) |
1124 | return -EINVAL; | |
1125 | ||
b97bf3fd PL |
1126 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1127 | "lower = %u, upper = %u\n", | |
1128 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
b97bf3fd PL |
1129 | if (p_ptr->publ.connected) |
1130 | goto exit; | |
1131 | if (seq->lower > seq->upper) | |
1132 | goto exit; | |
1133 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1134 | goto exit; | |
1135 | key = ref + p_ptr->pub_count + 1; | |
1136 | if (key == ref) { | |
1137 | res = -EADDRINUSE; | |
1138 | goto exit; | |
1139 | } | |
4323add6 PL |
1140 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1141 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1142 | if (publ) { |
1143 | list_add(&publ->pport_list, &p_ptr->publications); | |
1144 | p_ptr->pub_count++; | |
1145 | p_ptr->publ.published = 1; | |
1146 | res = TIPC_OK; | |
1147 | } | |
1148 | exit: | |
4323add6 | 1149 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1150 | return res; |
1151 | } | |
1152 | ||
1153 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1154 | { | |
1155 | struct port *p_ptr; | |
1156 | struct publication *publ; | |
1157 | struct publication *tpubl; | |
1158 | int res = -EINVAL; | |
c4307285 | 1159 | |
4323add6 | 1160 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1161 | if (!p_ptr) |
1162 | return -EINVAL; | |
b97bf3fd | 1163 | if (!seq) { |
c4307285 | 1164 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1165 | &p_ptr->publications, pport_list) { |
c4307285 | 1166 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1167 | publ->ref, publ->key); |
b97bf3fd PL |
1168 | } |
1169 | res = TIPC_OK; | |
1170 | } else { | |
c4307285 | 1171 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1172 | &p_ptr->publications, pport_list) { |
1173 | if (publ->scope != scope) | |
1174 | continue; | |
1175 | if (publ->type != seq->type) | |
1176 | continue; | |
1177 | if (publ->lower != seq->lower) | |
1178 | continue; | |
1179 | if (publ->upper != seq->upper) | |
1180 | break; | |
c4307285 | 1181 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1182 | publ->ref, publ->key); |
b97bf3fd PL |
1183 | res = TIPC_OK; |
1184 | break; | |
1185 | } | |
1186 | } | |
1187 | if (list_empty(&p_ptr->publications)) | |
1188 | p_ptr->publ.published = 0; | |
4323add6 | 1189 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1190 | return res; |
1191 | } | |
1192 | ||
1193 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1194 | { | |
1195 | struct port *p_ptr; | |
1196 | struct tipc_msg *msg; | |
1197 | int res = -EINVAL; | |
1198 | ||
4323add6 | 1199 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1200 | if (!p_ptr) |
1201 | return -EINVAL; | |
1202 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1203 | goto exit; | |
1204 | if (!peer->ref) | |
1205 | goto exit; | |
1206 | ||
1207 | msg = &p_ptr->publ.phdr; | |
1208 | msg_set_destnode(msg, peer->node); | |
1209 | msg_set_destport(msg, peer->ref); | |
1210 | msg_set_orignode(msg, tipc_own_addr); | |
1211 | msg_set_origport(msg, p_ptr->publ.ref); | |
1212 | msg_set_transp_seqno(msg, 42); | |
1213 | msg_set_type(msg, TIPC_CONN_MSG); | |
1214 | if (!may_route(peer->node)) | |
1215 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1216 | else | |
1217 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1218 | ||
1219 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1220 | p_ptr->probing_state = CONFIRMED; | |
1221 | p_ptr->publ.connected = 1; | |
1222 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1223 | ||
4323add6 | 1224 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1225 | (void *)(unsigned long)ref, |
b97bf3fd PL |
1226 | (net_ev_handler)port_handle_node_down); |
1227 | res = TIPC_OK; | |
1228 | exit: | |
4323add6 | 1229 | tipc_port_unlock(p_ptr); |
05646c91 | 1230 | p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1231 | return res; |
1232 | } | |
1233 | ||
0c3141e9 AS |
1234 | /** |
1235 | * tipc_disconnect_port - disconnect port from peer | |
1236 | * | |
1237 | * Port must be locked. | |
1238 | */ | |
1239 | ||
1240 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1241 | { | |
1242 | int res; | |
1243 | ||
1244 | if (tp_ptr->connected) { | |
1245 | tp_ptr->connected = 0; | |
1246 | /* let timer expire on it's own to avoid deadlock! */ | |
1247 | tipc_nodesub_unsubscribe( | |
1248 | &((struct port *)tp_ptr)->subscription); | |
1249 | res = TIPC_OK; | |
1250 | } else { | |
1251 | res = -ENOTCONN; | |
1252 | } | |
1253 | return res; | |
1254 | } | |
1255 | ||
b97bf3fd PL |
1256 | /* |
1257 | * tipc_disconnect(): Disconnect port form peer. | |
1258 | * This is a node local operation. | |
1259 | */ | |
1260 | ||
1261 | int tipc_disconnect(u32 ref) | |
1262 | { | |
1263 | struct port *p_ptr; | |
0c3141e9 | 1264 | int res; |
b97bf3fd | 1265 | |
4323add6 | 1266 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1267 | if (!p_ptr) |
1268 | return -EINVAL; | |
0c3141e9 | 1269 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1270 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1271 | return res; |
1272 | } | |
1273 | ||
1274 | /* | |
1275 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1276 | */ | |
1277 | int tipc_shutdown(u32 ref) | |
1278 | { | |
1279 | struct port *p_ptr; | |
1fc54d8f | 1280 | struct sk_buff *buf = NULL; |
b97bf3fd | 1281 | |
4323add6 | 1282 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1283 | if (!p_ptr) |
1284 | return -EINVAL; | |
1285 | ||
1286 | if (p_ptr->publ.connected) { | |
1287 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1288 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1289 | imp++; | |
1290 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1291 | port_peernode(p_ptr), | |
1292 | ref, | |
1293 | tipc_own_addr, | |
1294 | imp, | |
1295 | TIPC_CONN_MSG, | |
c4307285 | 1296 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1297 | port_out_seqno(p_ptr), |
1298 | 0); | |
1299 | } | |
4323add6 PL |
1300 | tipc_port_unlock(p_ptr); |
1301 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1302 | return tipc_disconnect(ref); |
1303 | } | |
1304 | ||
1305 | int tipc_isconnected(u32 ref, int *isconnected) | |
1306 | { | |
1307 | struct port *p_ptr; | |
c4307285 | 1308 | |
4323add6 | 1309 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1310 | if (!p_ptr) |
1311 | return -EINVAL; | |
1312 | *isconnected = p_ptr->publ.connected; | |
4323add6 | 1313 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1314 | return TIPC_OK; |
1315 | } | |
1316 | ||
1317 | int tipc_peer(u32 ref, struct tipc_portid *peer) | |
1318 | { | |
1319 | struct port *p_ptr; | |
1320 | int res; | |
c4307285 | 1321 | |
4323add6 | 1322 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1323 | if (!p_ptr) |
1324 | return -EINVAL; | |
1325 | if (p_ptr->publ.connected) { | |
1326 | peer->ref = port_peerport(p_ptr); | |
1327 | peer->node = port_peernode(p_ptr); | |
1328 | res = TIPC_OK; | |
1329 | } else | |
1330 | res = -ENOTCONN; | |
4323add6 | 1331 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1332 | return res; |
1333 | } | |
1334 | ||
1335 | int tipc_ref_valid(u32 ref) | |
1336 | { | |
1337 | /* Works irrespective of type */ | |
4323add6 | 1338 | return !!tipc_ref_deref(ref); |
b97bf3fd PL |
1339 | } |
1340 | ||
1341 | ||
1342 | /* | |
4323add6 | 1343 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1344 | * message for this node. |
1345 | */ | |
1346 | ||
4323add6 | 1347 | int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
b97bf3fd PL |
1348 | struct iovec const *msg_sect) |
1349 | { | |
1350 | struct sk_buff *buf; | |
1351 | int res; | |
c4307285 | 1352 | |
b97bf3fd PL |
1353 | res = msg_build(&sender->publ.phdr, msg_sect, num_sect, |
1354 | MAX_MSG_SIZE, !sender->user_port, &buf); | |
1355 | if (likely(buf)) | |
4323add6 | 1356 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1357 | return res; |
1358 | } | |
1359 | ||
1360 | /** | |
1361 | * tipc_send - send message sections on connection | |
1362 | */ | |
1363 | ||
1364 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1365 | { | |
1366 | struct port *p_ptr; | |
1367 | u32 destnode; | |
1368 | int res; | |
1369 | ||
4323add6 | 1370 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1371 | if (!p_ptr || !p_ptr->publ.connected) |
1372 | return -EINVAL; | |
1373 | ||
1374 | p_ptr->publ.congested = 1; | |
4323add6 | 1375 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1376 | destnode = port_peernode(p_ptr); |
1377 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1378 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1379 | destnode); | |
b97bf3fd | 1380 | else |
4323add6 | 1381 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1382 | |
1383 | if (likely(res != -ELINKCONG)) { | |
1384 | port_incr_out_seqno(p_ptr); | |
1385 | p_ptr->publ.congested = 0; | |
1386 | p_ptr->sent++; | |
1387 | return res; | |
1388 | } | |
1389 | } | |
1390 | if (port_unreliable(p_ptr)) { | |
1391 | p_ptr->publ.congested = 0; | |
1392 | /* Just calculate msg length and return */ | |
1393 | return msg_calc_data_size(msg_sect, num_sect); | |
1394 | } | |
1395 | return -ELINKCONG; | |
1396 | } | |
1397 | ||
c4307285 | 1398 | /** |
b97bf3fd PL |
1399 | * tipc_send_buf - send message buffer on connection |
1400 | */ | |
1401 | ||
1402 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) | |
1403 | { | |
1404 | struct port *p_ptr; | |
1405 | struct tipc_msg *msg; | |
1406 | u32 destnode; | |
1407 | u32 hsz; | |
1408 | u32 sz; | |
1409 | u32 res; | |
c4307285 | 1410 | |
4323add6 | 1411 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1412 | if (!p_ptr || !p_ptr->publ.connected) |
1413 | return -EINVAL; | |
1414 | ||
1415 | msg = &p_ptr->publ.phdr; | |
1416 | hsz = msg_hdr_sz(msg); | |
1417 | sz = hsz + dsz; | |
1418 | msg_set_size(msg, sz); | |
1419 | if (skb_cow(buf, hsz)) | |
1420 | return -ENOMEM; | |
1421 | ||
1422 | skb_push(buf, hsz); | |
27d7ff46 | 1423 | skb_copy_to_linear_data(buf, msg, hsz); |
b97bf3fd PL |
1424 | destnode = msg_destnode(msg); |
1425 | p_ptr->publ.congested = 1; | |
4323add6 | 1426 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1427 | if (likely(destnode != tipc_own_addr)) |
1428 | res = tipc_send_buf_fast(buf, destnode); | |
1429 | else { | |
4323add6 | 1430 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1431 | res = sz; |
1432 | } | |
1433 | if (likely(res != -ELINKCONG)) { | |
1434 | port_incr_out_seqno(p_ptr); | |
1435 | p_ptr->sent++; | |
1436 | p_ptr->publ.congested = 0; | |
1437 | return res; | |
1438 | } | |
1439 | } | |
1440 | if (port_unreliable(p_ptr)) { | |
1441 | p_ptr->publ.congested = 0; | |
1442 | return dsz; | |
1443 | } | |
1444 | return -ELINKCONG; | |
1445 | } | |
1446 | ||
1447 | /** | |
1448 | * tipc_forward2name - forward message sections to port name | |
1449 | */ | |
1450 | ||
c4307285 YH |
1451 | int tipc_forward2name(u32 ref, |
1452 | struct tipc_name const *name, | |
b97bf3fd | 1453 | u32 domain, |
c4307285 | 1454 | u32 num_sect, |
b97bf3fd | 1455 | struct iovec const *msg_sect, |
c4307285 | 1456 | struct tipc_portid const *orig, |
b97bf3fd PL |
1457 | unsigned int importance) |
1458 | { | |
1459 | struct port *p_ptr; | |
1460 | struct tipc_msg *msg; | |
1461 | u32 destnode = domain; | |
1462 | u32 destport = 0; | |
1463 | int res; | |
1464 | ||
4323add6 | 1465 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1466 | if (!p_ptr || p_ptr->publ.connected) |
1467 | return -EINVAL; | |
1468 | ||
1469 | msg = &p_ptr->publ.phdr; | |
1470 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1471 | msg_set_orignode(msg, orig->node); | |
1472 | msg_set_origport(msg, orig->ref); | |
1473 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1474 | msg_set_nametype(msg, name->type); | |
1475 | msg_set_nameinst(msg, name->instance); | |
1476 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1477 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1478 | msg_set_importance(msg,importance); | |
4323add6 | 1479 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1480 | msg_set_destnode(msg, destnode); |
1481 | msg_set_destport(msg, destport); | |
1482 | ||
1483 | if (likely(destport || destnode)) { | |
1484 | p_ptr->sent++; | |
1485 | if (likely(destnode == tipc_own_addr)) | |
4323add6 | 1486 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
c4307285 | 1487 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
4323add6 | 1488 | destnode); |
b97bf3fd PL |
1489 | if (likely(res != -ELINKCONG)) |
1490 | return res; | |
1491 | if (port_unreliable(p_ptr)) { | |
1492 | /* Just calculate msg length and return */ | |
1493 | return msg_calc_data_size(msg_sect, num_sect); | |
1494 | } | |
1495 | return -ELINKCONG; | |
1496 | } | |
c4307285 | 1497 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1498 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1499 | } |
1500 | ||
1501 | /** | |
1502 | * tipc_send2name - send message sections to port name | |
1503 | */ | |
1504 | ||
c4307285 | 1505 | int tipc_send2name(u32 ref, |
b97bf3fd | 1506 | struct tipc_name const *name, |
c4307285 YH |
1507 | unsigned int domain, |
1508 | unsigned int num_sect, | |
b97bf3fd PL |
1509 | struct iovec const *msg_sect) |
1510 | { | |
1511 | struct tipc_portid orig; | |
1512 | ||
1513 | orig.ref = ref; | |
1514 | orig.node = tipc_own_addr; | |
1515 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | |
1516 | TIPC_PORT_IMPORTANCE); | |
1517 | } | |
1518 | ||
c4307285 | 1519 | /** |
b97bf3fd PL |
1520 | * tipc_forward_buf2name - forward message buffer to port name |
1521 | */ | |
1522 | ||
1523 | int tipc_forward_buf2name(u32 ref, | |
1524 | struct tipc_name const *name, | |
1525 | u32 domain, | |
1526 | struct sk_buff *buf, | |
1527 | unsigned int dsz, | |
1528 | struct tipc_portid const *orig, | |
1529 | unsigned int importance) | |
1530 | { | |
1531 | struct port *p_ptr; | |
1532 | struct tipc_msg *msg; | |
1533 | u32 destnode = domain; | |
1534 | u32 destport = 0; | |
1535 | int res; | |
1536 | ||
4323add6 | 1537 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1538 | if (!p_ptr || p_ptr->publ.connected) |
1539 | return -EINVAL; | |
1540 | ||
1541 | msg = &p_ptr->publ.phdr; | |
1542 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1543 | msg_set_importance(msg, importance); | |
1544 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1545 | msg_set_orignode(msg, orig->node); | |
1546 | msg_set_origport(msg, orig->ref); | |
1547 | msg_set_nametype(msg, name->type); | |
1548 | msg_set_nameinst(msg, name->instance); | |
1549 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1550 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1551 | msg_set_size(msg, LONG_H_SIZE + dsz); | |
4323add6 | 1552 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1553 | msg_set_destnode(msg, destnode); |
1554 | msg_set_destport(msg, destport); | |
1555 | msg_dbg(msg, "forw2name ==> "); | |
1556 | if (skb_cow(buf, LONG_H_SIZE)) | |
1557 | return -ENOMEM; | |
1558 | skb_push(buf, LONG_H_SIZE); | |
27d7ff46 | 1559 | skb_copy_to_linear_data(buf, msg, LONG_H_SIZE); |
b97bf3fd PL |
1560 | msg_dbg(buf_msg(buf),"PREP:"); |
1561 | if (likely(destport || destnode)) { | |
1562 | p_ptr->sent++; | |
1563 | if (destnode == tipc_own_addr) | |
4323add6 | 1564 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1565 | res = tipc_send_buf_fast(buf, destnode); |
1566 | if (likely(res != -ELINKCONG)) | |
1567 | return res; | |
1568 | if (port_unreliable(p_ptr)) | |
1569 | return dsz; | |
1570 | return -ELINKCONG; | |
1571 | } | |
1572 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); | |
1573 | } | |
1574 | ||
c4307285 | 1575 | /** |
b97bf3fd PL |
1576 | * tipc_send_buf2name - send message buffer to port name |
1577 | */ | |
1578 | ||
c4307285 YH |
1579 | int tipc_send_buf2name(u32 ref, |
1580 | struct tipc_name const *dest, | |
b97bf3fd | 1581 | u32 domain, |
c4307285 | 1582 | struct sk_buff *buf, |
b97bf3fd PL |
1583 | unsigned int dsz) |
1584 | { | |
1585 | struct tipc_portid orig; | |
1586 | ||
1587 | orig.ref = ref; | |
1588 | orig.node = tipc_own_addr; | |
1589 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, | |
1590 | TIPC_PORT_IMPORTANCE); | |
1591 | } | |
1592 | ||
c4307285 | 1593 | /** |
b97bf3fd PL |
1594 | * tipc_forward2port - forward message sections to port identity |
1595 | */ | |
1596 | ||
1597 | int tipc_forward2port(u32 ref, | |
1598 | struct tipc_portid const *dest, | |
c4307285 | 1599 | unsigned int num_sect, |
b97bf3fd | 1600 | struct iovec const *msg_sect, |
c4307285 | 1601 | struct tipc_portid const *orig, |
b97bf3fd PL |
1602 | unsigned int importance) |
1603 | { | |
1604 | struct port *p_ptr; | |
1605 | struct tipc_msg *msg; | |
1606 | int res; | |
1607 | ||
4323add6 | 1608 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1609 | if (!p_ptr || p_ptr->publ.connected) |
1610 | return -EINVAL; | |
1611 | ||
1612 | msg = &p_ptr->publ.phdr; | |
1613 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1614 | msg_set_orignode(msg, orig->node); | |
1615 | msg_set_origport(msg, orig->ref); | |
1616 | msg_set_destnode(msg, dest->node); | |
1617 | msg_set_destport(msg, dest->ref); | |
1618 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1619 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1620 | msg_set_importance(msg, importance); | |
1621 | p_ptr->sent++; | |
1622 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1623 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1624 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1625 | if (likely(res != -ELINKCONG)) |
1626 | return res; | |
1627 | if (port_unreliable(p_ptr)) { | |
1628 | /* Just calculate msg length and return */ | |
1629 | return msg_calc_data_size(msg_sect, num_sect); | |
1630 | } | |
1631 | return -ELINKCONG; | |
1632 | } | |
1633 | ||
c4307285 YH |
1634 | /** |
1635 | * tipc_send2port - send message sections to port identity | |
b97bf3fd PL |
1636 | */ |
1637 | ||
c4307285 | 1638 | int tipc_send2port(u32 ref, |
b97bf3fd | 1639 | struct tipc_portid const *dest, |
c4307285 | 1640 | unsigned int num_sect, |
b97bf3fd PL |
1641 | struct iovec const *msg_sect) |
1642 | { | |
1643 | struct tipc_portid orig; | |
1644 | ||
1645 | orig.ref = ref; | |
1646 | orig.node = tipc_own_addr; | |
c4307285 | 1647 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, |
b97bf3fd PL |
1648 | TIPC_PORT_IMPORTANCE); |
1649 | } | |
1650 | ||
c4307285 | 1651 | /** |
b97bf3fd PL |
1652 | * tipc_forward_buf2port - forward message buffer to port identity |
1653 | */ | |
1654 | int tipc_forward_buf2port(u32 ref, | |
1655 | struct tipc_portid const *dest, | |
1656 | struct sk_buff *buf, | |
1657 | unsigned int dsz, | |
1658 | struct tipc_portid const *orig, | |
1659 | unsigned int importance) | |
1660 | { | |
1661 | struct port *p_ptr; | |
1662 | struct tipc_msg *msg; | |
1663 | int res; | |
1664 | ||
4323add6 | 1665 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1666 | if (!p_ptr || p_ptr->publ.connected) |
1667 | return -EINVAL; | |
1668 | ||
1669 | msg = &p_ptr->publ.phdr; | |
1670 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1671 | msg_set_orignode(msg, orig->node); | |
1672 | msg_set_origport(msg, orig->ref); | |
1673 | msg_set_destnode(msg, dest->node); | |
1674 | msg_set_destport(msg, dest->ref); | |
1675 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1676 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1677 | msg_set_importance(msg, importance); | |
1678 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | |
1679 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1680 | return -ENOMEM; | |
1681 | ||
1682 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1683 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
b97bf3fd PL |
1684 | msg_dbg(msg, "buf2port: "); |
1685 | p_ptr->sent++; | |
1686 | if (dest->node == tipc_own_addr) | |
4323add6 | 1687 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1688 | res = tipc_send_buf_fast(buf, dest->node); |
1689 | if (likely(res != -ELINKCONG)) | |
1690 | return res; | |
1691 | if (port_unreliable(p_ptr)) | |
1692 | return dsz; | |
1693 | return -ELINKCONG; | |
1694 | } | |
1695 | ||
c4307285 | 1696 | /** |
b97bf3fd PL |
1697 | * tipc_send_buf2port - send message buffer to port identity |
1698 | */ | |
1699 | ||
c4307285 | 1700 | int tipc_send_buf2port(u32 ref, |
b97bf3fd | 1701 | struct tipc_portid const *dest, |
c4307285 | 1702 | struct sk_buff *buf, |
b97bf3fd PL |
1703 | unsigned int dsz) |
1704 | { | |
1705 | struct tipc_portid orig; | |
1706 | ||
1707 | orig.ref = ref; | |
1708 | orig.node = tipc_own_addr; | |
c4307285 | 1709 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, |
b97bf3fd PL |
1710 | TIPC_PORT_IMPORTANCE); |
1711 | } | |
1712 |