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 | 450 | msg_set_origport(rmsg, msg_destport(msg)); |
99c14593 | 451 | if (msg_short(msg)) { |
b97bf3fd | 452 | msg_set_orignode(rmsg, tipc_own_addr); |
99c14593 AS |
453 | /* leave name type & instance as zeroes */ |
454 | } else { | |
b97bf3fd | 455 | msg_set_orignode(rmsg, msg_destnode(msg)); |
99c14593 AS |
456 | msg_set_nametype(rmsg, msg_nametype(msg)); |
457 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
458 | } | |
c4307285 | 459 | msg_set_size(rmsg, data_sz + hdr_sz); |
27d7ff46 | 460 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
461 | |
462 | /* send self-abort message when rejecting on a connected port */ | |
463 | if (msg_connected(msg)) { | |
1fc54d8f | 464 | struct sk_buff *abuf = NULL; |
4323add6 | 465 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
466 | |
467 | if (p_ptr) { | |
468 | if (p_ptr->publ.connected) | |
469 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 470 | tipc_port_unlock(p_ptr); |
b97bf3fd | 471 | } |
4323add6 | 472 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
473 | } |
474 | ||
475 | /* send rejected message */ | |
476 | buf_discard(buf); | |
4323add6 | 477 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
478 | return data_sz; |
479 | } | |
480 | ||
4323add6 PL |
481 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
482 | struct iovec const *msg_sect, u32 num_sect, | |
483 | int err) | |
b97bf3fd PL |
484 | { |
485 | struct sk_buff *buf; | |
486 | int res; | |
487 | ||
c4307285 | 488 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
489 | !p_ptr->user_port, &buf); |
490 | if (!buf) | |
491 | return res; | |
492 | ||
493 | return tipc_reject_msg(buf, err); | |
494 | } | |
495 | ||
496 | static void port_timeout(unsigned long ref) | |
497 | { | |
4323add6 | 498 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 499 | struct sk_buff *buf = NULL; |
b97bf3fd | 500 | |
065fd177 AS |
501 | if (!p_ptr) |
502 | return; | |
503 | ||
504 | if (!p_ptr->publ.connected) { | |
505 | tipc_port_unlock(p_ptr); | |
b97bf3fd | 506 | return; |
065fd177 | 507 | } |
b97bf3fd PL |
508 | |
509 | /* Last probe answered ? */ | |
510 | if (p_ptr->probing_state == PROBING) { | |
511 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
512 | } else { | |
513 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
514 | port_peernode(p_ptr), | |
515 | p_ptr->publ.ref, | |
516 | tipc_own_addr, | |
517 | CONN_MANAGER, | |
518 | CONN_PROBE, | |
c4307285 | 519 | TIPC_OK, |
b97bf3fd PL |
520 | port_out_seqno(p_ptr), |
521 | 0); | |
522 | port_incr_out_seqno(p_ptr); | |
523 | p_ptr->probing_state = PROBING; | |
524 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
525 | } | |
4323add6 PL |
526 | tipc_port_unlock(p_ptr); |
527 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
528 | } |
529 | ||
530 | ||
531 | static void port_handle_node_down(unsigned long ref) | |
532 | { | |
4323add6 | 533 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 534 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
535 | |
536 | if (!p_ptr) | |
537 | return; | |
538 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
539 | tipc_port_unlock(p_ptr); |
540 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
541 | } |
542 | ||
543 | ||
544 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
545 | { | |
546 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
547 | ||
548 | if (!p_ptr->publ.connected) | |
1fc54d8f | 549 | return NULL; |
b97bf3fd PL |
550 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
551 | imp++; | |
552 | return port_build_proto_msg(p_ptr->publ.ref, | |
553 | tipc_own_addr, | |
554 | port_peerport(p_ptr), | |
555 | port_peernode(p_ptr), | |
556 | imp, | |
557 | TIPC_CONN_MSG, | |
c4307285 | 558 | err, |
b97bf3fd PL |
559 | p_ptr->last_in_seqno + 1, |
560 | 0); | |
561 | } | |
562 | ||
563 | ||
564 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
565 | { | |
566 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
567 | ||
568 | if (!p_ptr->publ.connected) | |
1fc54d8f | 569 | return NULL; |
b97bf3fd PL |
570 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
571 | imp++; | |
572 | return port_build_proto_msg(port_peerport(p_ptr), | |
573 | port_peernode(p_ptr), | |
574 | p_ptr->publ.ref, | |
575 | tipc_own_addr, | |
576 | imp, | |
577 | TIPC_CONN_MSG, | |
c4307285 | 578 | err, |
b97bf3fd PL |
579 | port_out_seqno(p_ptr), |
580 | 0); | |
581 | } | |
582 | ||
4323add6 | 583 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
584 | { |
585 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 586 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 587 | u32 err = TIPC_OK; |
1fc54d8f SR |
588 | struct sk_buff *r_buf = NULL; |
589 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd PL |
590 | |
591 | msg_dbg(msg, "PORT<RECV<:"); | |
592 | ||
593 | if (!p_ptr) { | |
594 | err = TIPC_ERR_NO_PORT; | |
595 | } else if (p_ptr->publ.connected) { | |
596 | if (port_peernode(p_ptr) != msg_orignode(msg)) | |
597 | err = TIPC_ERR_NO_PORT; | |
598 | if (port_peerport(p_ptr) != msg_origport(msg)) | |
599 | err = TIPC_ERR_NO_PORT; | |
600 | if (!err && msg_routed(msg)) { | |
601 | u32 seqno = msg_transp_seqno(msg); | |
602 | u32 myno = ++p_ptr->last_in_seqno; | |
603 | if (seqno != myno) { | |
604 | err = TIPC_ERR_NO_PORT; | |
605 | abort_buf = port_build_self_abort_msg(p_ptr, err); | |
606 | } | |
607 | } | |
608 | if (msg_type(msg) == CONN_ACK) { | |
c4307285 | 609 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
610 | p_ptr->publ.congested && |
611 | p_ptr->wakeup; | |
612 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 613 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
614 | goto exit; |
615 | p_ptr->publ.congested = 0; | |
616 | if (!wakeup) | |
617 | goto exit; | |
618 | p_ptr->wakeup(&p_ptr->publ); | |
619 | goto exit; | |
620 | } | |
621 | } else if (p_ptr->publ.published) { | |
622 | err = TIPC_ERR_NO_PORT; | |
623 | } | |
624 | if (err) { | |
625 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
626 | msg_orignode(msg), |
627 | msg_destport(msg), | |
b97bf3fd | 628 | tipc_own_addr, |
06d82c91 | 629 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
630 | TIPC_CONN_MSG, |
631 | err, | |
632 | 0, | |
633 | 0); | |
634 | goto exit; | |
635 | } | |
636 | ||
637 | /* All is fine */ | |
638 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
639 | r_buf = port_build_proto_msg(msg_origport(msg), |
640 | msg_orignode(msg), | |
641 | msg_destport(msg), | |
642 | tipc_own_addr, | |
b97bf3fd PL |
643 | CONN_MANAGER, |
644 | CONN_PROBE_REPLY, | |
645 | TIPC_OK, | |
646 | port_out_seqno(p_ptr), | |
647 | 0); | |
648 | } | |
649 | p_ptr->probing_state = CONFIRMED; | |
650 | port_incr_out_seqno(p_ptr); | |
651 | exit: | |
652 | if (p_ptr) | |
4323add6 PL |
653 | tipc_port_unlock(p_ptr); |
654 | tipc_net_route_msg(r_buf); | |
655 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
656 | buf_discard(buf); |
657 | } | |
658 | ||
659 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
660 | { | |
c4307285 | 661 | struct publication *publ; |
b97bf3fd PL |
662 | |
663 | if (full_id) | |
c4307285 | 664 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 665 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
c4307285 | 666 | tipc_node(tipc_own_addr), p_ptr->publ.ref); |
b97bf3fd PL |
667 | else |
668 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
669 | ||
c4307285 YH |
670 | if (p_ptr->publ.connected) { |
671 | u32 dport = port_peerport(p_ptr); | |
672 | u32 destnode = port_peernode(p_ptr); | |
673 | ||
674 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
675 | tipc_zone(destnode), tipc_cluster(destnode), | |
676 | tipc_node(destnode), dport); | |
677 | if (p_ptr->publ.conn_type != 0) | |
678 | tipc_printf(buf, " via {%u,%u}", | |
679 | p_ptr->publ.conn_type, | |
680 | p_ptr->publ.conn_instance); | |
681 | } | |
682 | else if (p_ptr->publ.published) { | |
683 | tipc_printf(buf, " bound to"); | |
684 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
685 | if (publ->lower == publ->upper) |
686 | tipc_printf(buf, " {%u,%u}", publ->type, | |
687 | publ->lower); | |
688 | else | |
c4307285 | 689 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 690 | publ->lower, publ->upper); |
c4307285 YH |
691 | } |
692 | } | |
693 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
694 | } |
695 | ||
696 | #define MAX_PORT_QUERY 32768 | |
697 | ||
4323add6 | 698 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
699 | { |
700 | struct sk_buff *buf; | |
701 | struct tlv_desc *rep_tlv; | |
702 | struct print_buf pb; | |
703 | struct port *p_ptr; | |
704 | int str_len; | |
705 | ||
4323add6 | 706 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
707 | if (!buf) |
708 | return NULL; | |
709 | rep_tlv = (struct tlv_desc *)buf->data; | |
710 | ||
4323add6 PL |
711 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
712 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
713 | list_for_each_entry(p_ptr, &ports, port_list) { |
714 | spin_lock_bh(p_ptr->publ.lock); | |
715 | port_print(p_ptr, &pb, 0); | |
716 | spin_unlock_bh(p_ptr->publ.lock); | |
717 | } | |
4323add6 PL |
718 | spin_unlock_bh(&tipc_port_list_lock); |
719 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
720 | |
721 | skb_put(buf, TLV_SPACE(str_len)); | |
722 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
723 | ||
724 | return buf; | |
725 | } | |
726 | ||
727 | #if 0 | |
728 | ||
729 | #define MAX_PORT_STATS 2000 | |
730 | ||
731 | struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) | |
732 | { | |
733 | u32 ref; | |
734 | struct port *p_ptr; | |
735 | struct sk_buff *buf; | |
736 | struct tlv_desc *rep_tlv; | |
737 | struct print_buf pb; | |
738 | int str_len; | |
739 | ||
740 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) | |
741 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
742 | ||
743 | ref = *(u32 *)TLV_DATA(req_tlv_area); | |
744 | ref = ntohl(ref); | |
745 | ||
4323add6 | 746 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
747 | if (!p_ptr) |
748 | return cfg_reply_error_string("port not found"); | |
749 | ||
4323add6 | 750 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); |
b97bf3fd | 751 | if (!buf) { |
4323add6 | 752 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
753 | return NULL; |
754 | } | |
755 | rep_tlv = (struct tlv_desc *)buf->data; | |
756 | ||
4323add6 | 757 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); |
b97bf3fd PL |
758 | port_print(p_ptr, &pb, 1); |
759 | /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ | |
4323add6 PL |
760 | tipc_port_unlock(p_ptr); |
761 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
762 | |
763 | skb_put(buf, TLV_SPACE(str_len)); | |
764 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
765 | ||
766 | return buf; | |
767 | } | |
768 | ||
769 | #endif | |
770 | ||
4323add6 | 771 | void tipc_port_reinit(void) |
b97bf3fd PL |
772 | { |
773 | struct port *p_ptr; | |
774 | struct tipc_msg *msg; | |
775 | ||
4323add6 | 776 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
777 | list_for_each_entry(p_ptr, &ports, port_list) { |
778 | msg = &p_ptr->publ.phdr; | |
779 | if (msg_orignode(msg) == tipc_own_addr) | |
780 | break; | |
6d4a6672 | 781 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
782 | msg_set_orignode(msg, tipc_own_addr); |
783 | } | |
4323add6 | 784 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
785 | } |
786 | ||
787 | ||
788 | /* | |
789 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
790 | * to the tipc_port interface. | |
791 | */ | |
792 | ||
793 | static void port_dispatcher_sigh(void *dummy) | |
794 | { | |
795 | struct sk_buff *buf; | |
796 | ||
797 | spin_lock_bh(&queue_lock); | |
798 | buf = msg_queue_head; | |
1fc54d8f | 799 | msg_queue_head = NULL; |
b97bf3fd PL |
800 | spin_unlock_bh(&queue_lock); |
801 | ||
802 | while (buf) { | |
803 | struct port *p_ptr; | |
804 | struct user_port *up_ptr; | |
805 | struct tipc_portid orig; | |
806 | struct tipc_name_seq dseq; | |
807 | void *usr_handle; | |
808 | int connected; | |
809 | int published; | |
9688243b | 810 | u32 message_type; |
b97bf3fd PL |
811 | |
812 | struct sk_buff *next = buf->next; | |
813 | struct tipc_msg *msg = buf_msg(buf); | |
814 | u32 dref = msg_destport(msg); | |
c4307285 | 815 | |
9688243b AS |
816 | message_type = msg_type(msg); |
817 | if (message_type > TIPC_DIRECT_MSG) | |
818 | goto reject; /* Unsupported message type */ | |
819 | ||
4323add6 | 820 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
821 | if (!p_ptr) |
822 | goto reject; /* Port deleted while msg in queue */ | |
823 | ||
b97bf3fd PL |
824 | orig.ref = msg_origport(msg); |
825 | orig.node = msg_orignode(msg); | |
826 | up_ptr = p_ptr->user_port; | |
827 | usr_handle = up_ptr->usr_handle; | |
828 | connected = p_ptr->publ.connected; | |
829 | published = p_ptr->publ.published; | |
830 | ||
831 | if (unlikely(msg_errcode(msg))) | |
832 | goto err; | |
833 | ||
9688243b | 834 | switch (message_type) { |
c4307285 | 835 | |
b97bf3fd PL |
836 | case TIPC_CONN_MSG:{ |
837 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
838 | u32 peer_port = port_peerport(p_ptr); | |
839 | u32 peer_node = port_peernode(p_ptr); | |
840 | ||
4cec72c8 | 841 | tipc_port_unlock(p_ptr); |
5307e469 AS |
842 | if (unlikely(!cb)) |
843 | goto reject; | |
b97bf3fd | 844 | if (unlikely(!connected)) { |
84b07c16 | 845 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 846 | goto reject; |
84b07c16 AS |
847 | } else if ((msg_origport(msg) != peer_port) || |
848 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 849 | goto reject; |
c4307285 | 850 | if (unlikely(++p_ptr->publ.conn_unacked >= |
b97bf3fd | 851 | TIPC_FLOW_CONTROL_WIN)) |
c4307285 | 852 | tipc_acknowledge(dref, |
b97bf3fd PL |
853 | p_ptr->publ.conn_unacked); |
854 | skb_pull(buf, msg_hdr_sz(msg)); | |
855 | cb(usr_handle, dref, &buf, msg_data(msg), | |
856 | msg_data_sz(msg)); | |
857 | break; | |
858 | } | |
859 | case TIPC_DIRECT_MSG:{ | |
860 | tipc_msg_event cb = up_ptr->msg_cb; | |
861 | ||
4cec72c8 | 862 | tipc_port_unlock(p_ptr); |
5307e469 | 863 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
864 | goto reject; |
865 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 866 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
867 | msg_data_sz(msg), msg_importance(msg), |
868 | &orig); | |
869 | break; | |
870 | } | |
9688243b | 871 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
872 | case TIPC_NAMED_MSG:{ |
873 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
874 | ||
4cec72c8 | 875 | tipc_port_unlock(p_ptr); |
5307e469 | 876 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
877 | goto reject; |
878 | dseq.type = msg_nametype(msg); | |
879 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
880 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
881 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 882 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 883 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
884 | msg_data_sz(msg), msg_importance(msg), |
885 | &orig, &dseq); | |
886 | break; | |
887 | } | |
888 | } | |
889 | if (buf) | |
890 | buf_discard(buf); | |
891 | buf = next; | |
892 | continue; | |
893 | err: | |
9688243b | 894 | switch (message_type) { |
c4307285 | 895 | |
b97bf3fd | 896 | case TIPC_CONN_MSG:{ |
c4307285 | 897 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
898 | up_ptr->conn_err_cb; |
899 | u32 peer_port = port_peerport(p_ptr); | |
900 | u32 peer_node = port_peernode(p_ptr); | |
901 | ||
4cec72c8 | 902 | tipc_port_unlock(p_ptr); |
5307e469 | 903 | if (!cb || !connected) |
b97bf3fd | 904 | break; |
5307e469 AS |
905 | if ((msg_origport(msg) != peer_port) || |
906 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
907 | break; |
908 | tipc_disconnect(dref); | |
909 | skb_pull(buf, msg_hdr_sz(msg)); | |
910 | cb(usr_handle, dref, &buf, msg_data(msg), | |
911 | msg_data_sz(msg), msg_errcode(msg)); | |
912 | break; | |
913 | } | |
914 | case TIPC_DIRECT_MSG:{ | |
915 | tipc_msg_err_event cb = up_ptr->err_cb; | |
916 | ||
4cec72c8 | 917 | tipc_port_unlock(p_ptr); |
5307e469 | 918 | if (!cb || connected) |
b97bf3fd PL |
919 | break; |
920 | skb_pull(buf, msg_hdr_sz(msg)); | |
921 | cb(usr_handle, dref, &buf, msg_data(msg), | |
922 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
923 | break; | |
924 | } | |
9688243b | 925 | case TIPC_MCAST_MSG: |
b97bf3fd | 926 | case TIPC_NAMED_MSG:{ |
c4307285 | 927 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
928 | up_ptr->named_err_cb; |
929 | ||
4cec72c8 | 930 | tipc_port_unlock(p_ptr); |
5307e469 | 931 | if (!cb || connected) |
b97bf3fd PL |
932 | break; |
933 | dseq.type = msg_nametype(msg); | |
934 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
935 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
936 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 937 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 938 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
939 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
940 | break; | |
941 | } | |
942 | } | |
943 | if (buf) | |
944 | buf_discard(buf); | |
945 | buf = next; | |
946 | continue; | |
947 | reject: | |
948 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
949 | buf = next; | |
950 | } | |
951 | } | |
952 | ||
953 | /* | |
954 | * port_dispatcher(): Dispatcher for messages destinated | |
955 | * to the tipc_port interface. Called with port locked. | |
956 | */ | |
957 | ||
958 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
959 | { | |
960 | buf->next = NULL; | |
961 | spin_lock_bh(&queue_lock); | |
962 | if (msg_queue_head) { | |
963 | msg_queue_tail->next = buf; | |
964 | msg_queue_tail = buf; | |
965 | } else { | |
966 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 967 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
968 | } |
969 | spin_unlock_bh(&queue_lock); | |
970 | return TIPC_OK; | |
971 | } | |
972 | ||
c4307285 | 973 | /* |
b97bf3fd | 974 | * Wake up port after congestion: Called with port locked, |
c4307285 | 975 | * |
b97bf3fd PL |
976 | */ |
977 | ||
978 | static void port_wakeup_sh(unsigned long ref) | |
979 | { | |
980 | struct port *p_ptr; | |
981 | struct user_port *up_ptr; | |
1fc54d8f SR |
982 | tipc_continue_event cb = NULL; |
983 | void *uh = NULL; | |
b97bf3fd | 984 | |
4323add6 | 985 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
986 | if (p_ptr) { |
987 | up_ptr = p_ptr->user_port; | |
988 | if (up_ptr) { | |
989 | cb = up_ptr->continue_event_cb; | |
990 | uh = up_ptr->usr_handle; | |
991 | } | |
4323add6 | 992 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
993 | } |
994 | if (cb) | |
995 | cb(uh, ref); | |
996 | } | |
997 | ||
998 | ||
999 | static void port_wakeup(struct tipc_port *p_ptr) | |
1000 | { | |
4323add6 | 1001 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
1002 | } |
1003 | ||
1004 | void tipc_acknowledge(u32 ref, u32 ack) | |
1005 | { | |
1006 | struct port *p_ptr; | |
1fc54d8f | 1007 | struct sk_buff *buf = NULL; |
b97bf3fd | 1008 | |
4323add6 | 1009 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1010 | if (!p_ptr) |
1011 | return; | |
1012 | if (p_ptr->publ.connected) { | |
1013 | p_ptr->publ.conn_unacked -= ack; | |
1014 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1015 | port_peernode(p_ptr), | |
1016 | ref, | |
1017 | tipc_own_addr, | |
1018 | CONN_MANAGER, | |
1019 | CONN_ACK, | |
c4307285 | 1020 | TIPC_OK, |
b97bf3fd PL |
1021 | port_out_seqno(p_ptr), |
1022 | ack); | |
1023 | } | |
4323add6 PL |
1024 | tipc_port_unlock(p_ptr); |
1025 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1026 | } |
1027 | ||
1028 | /* | |
1029 | * tipc_createport(): user level call. Will add port to | |
1030 | * registry if non-zero user_ref. | |
1031 | */ | |
1032 | ||
c4307285 YH |
1033 | int tipc_createport(u32 user_ref, |
1034 | void *usr_handle, | |
1035 | unsigned int importance, | |
1036 | tipc_msg_err_event error_cb, | |
1037 | tipc_named_msg_err_event named_error_cb, | |
1038 | tipc_conn_shutdown_event conn_error_cb, | |
1039 | tipc_msg_event msg_cb, | |
1040 | tipc_named_msg_event named_msg_cb, | |
1041 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
1042 | tipc_continue_event continue_event_cb,/* May be zero */ |
1043 | u32 *portref) | |
1044 | { | |
1045 | struct user_port *up_ptr; | |
c4307285 | 1046 | struct port *p_ptr; |
7ef43eba | 1047 | struct tipc_port *tp_ptr; |
b97bf3fd PL |
1048 | u32 ref; |
1049 | ||
0da974f4 | 1050 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 1051 | if (!up_ptr) { |
a75bf874 | 1052 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
1053 | return -ENOMEM; |
1054 | } | |
7ef43eba AS |
1055 | ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, |
1056 | importance, &tp_ptr); | |
1057 | if (ref == 0) { | |
b97bf3fd PL |
1058 | kfree(up_ptr); |
1059 | return -ENOMEM; | |
1060 | } | |
7ef43eba | 1061 | p_ptr = (struct port *)tp_ptr; |
b97bf3fd PL |
1062 | |
1063 | p_ptr->user_port = up_ptr; | |
1064 | up_ptr->user_ref = user_ref; | |
1065 | up_ptr->usr_handle = usr_handle; | |
1066 | up_ptr->ref = p_ptr->publ.ref; | |
1067 | up_ptr->err_cb = error_cb; | |
1068 | up_ptr->named_err_cb = named_error_cb; | |
1069 | up_ptr->conn_err_cb = conn_error_cb; | |
1070 | up_ptr->msg_cb = msg_cb; | |
1071 | up_ptr->named_msg_cb = named_msg_cb; | |
1072 | up_ptr->conn_msg_cb = conn_msg_cb; | |
1073 | up_ptr->continue_event_cb = continue_event_cb; | |
1074 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 1075 | tipc_reg_add_port(up_ptr); |
b97bf3fd | 1076 | *portref = p_ptr->publ.ref; |
c4307285 | 1077 | dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref); |
4323add6 | 1078 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1079 | return TIPC_OK; |
1080 | } | |
1081 | ||
1082 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) | |
1083 | { | |
1084 | id->ref = ref; | |
1085 | id->node = tipc_own_addr; | |
1086 | return TIPC_OK; | |
1087 | } | |
1088 | ||
1089 | int tipc_portimportance(u32 ref, unsigned int *importance) | |
1090 | { | |
1091 | struct port *p_ptr; | |
c4307285 | 1092 | |
4323add6 | 1093 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1094 | if (!p_ptr) |
1095 | return -EINVAL; | |
1096 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
4cec72c8 | 1097 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1098 | return TIPC_OK; |
1099 | } | |
1100 | ||
1101 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
1102 | { | |
1103 | struct port *p_ptr; | |
1104 | ||
1105 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1106 | return -EINVAL; | |
1107 | ||
4323add6 | 1108 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1109 | if (!p_ptr) |
1110 | return -EINVAL; | |
1111 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
4cec72c8 | 1112 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1113 | return TIPC_OK; |
1114 | } | |
1115 | ||
1116 | ||
1117 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1118 | { | |
1119 | struct port *p_ptr; | |
1120 | struct publication *publ; | |
1121 | u32 key; | |
1122 | int res = -EINVAL; | |
1123 | ||
4323add6 | 1124 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
1125 | if (!p_ptr) |
1126 | return -EINVAL; | |
1127 | ||
b97bf3fd PL |
1128 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1129 | "lower = %u, upper = %u\n", | |
1130 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
b97bf3fd PL |
1131 | if (p_ptr->publ.connected) |
1132 | goto exit; | |
1133 | if (seq->lower > seq->upper) | |
1134 | goto exit; | |
1135 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1136 | goto exit; | |
1137 | key = ref + p_ptr->pub_count + 1; | |
1138 | if (key == ref) { | |
1139 | res = -EADDRINUSE; | |
1140 | goto exit; | |
1141 | } | |
4323add6 PL |
1142 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1143 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1144 | if (publ) { |
1145 | list_add(&publ->pport_list, &p_ptr->publications); | |
1146 | p_ptr->pub_count++; | |
1147 | p_ptr->publ.published = 1; | |
1148 | res = TIPC_OK; | |
1149 | } | |
1150 | exit: | |
4323add6 | 1151 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1152 | return res; |
1153 | } | |
1154 | ||
1155 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1156 | { | |
1157 | struct port *p_ptr; | |
1158 | struct publication *publ; | |
1159 | struct publication *tpubl; | |
1160 | int res = -EINVAL; | |
c4307285 | 1161 | |
4323add6 | 1162 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1163 | if (!p_ptr) |
1164 | return -EINVAL; | |
b97bf3fd | 1165 | if (!seq) { |
c4307285 | 1166 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1167 | &p_ptr->publications, pport_list) { |
c4307285 | 1168 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1169 | publ->ref, publ->key); |
b97bf3fd PL |
1170 | } |
1171 | res = TIPC_OK; | |
1172 | } else { | |
c4307285 | 1173 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1174 | &p_ptr->publications, pport_list) { |
1175 | if (publ->scope != scope) | |
1176 | continue; | |
1177 | if (publ->type != seq->type) | |
1178 | continue; | |
1179 | if (publ->lower != seq->lower) | |
1180 | continue; | |
1181 | if (publ->upper != seq->upper) | |
1182 | break; | |
c4307285 | 1183 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1184 | publ->ref, publ->key); |
b97bf3fd PL |
1185 | res = TIPC_OK; |
1186 | break; | |
1187 | } | |
1188 | } | |
1189 | if (list_empty(&p_ptr->publications)) | |
1190 | p_ptr->publ.published = 0; | |
4323add6 | 1191 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1192 | return res; |
1193 | } | |
1194 | ||
1195 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1196 | { | |
1197 | struct port *p_ptr; | |
1198 | struct tipc_msg *msg; | |
1199 | int res = -EINVAL; | |
1200 | ||
4323add6 | 1201 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1202 | if (!p_ptr) |
1203 | return -EINVAL; | |
1204 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1205 | goto exit; | |
1206 | if (!peer->ref) | |
1207 | goto exit; | |
1208 | ||
1209 | msg = &p_ptr->publ.phdr; | |
1210 | msg_set_destnode(msg, peer->node); | |
1211 | msg_set_destport(msg, peer->ref); | |
1212 | msg_set_orignode(msg, tipc_own_addr); | |
1213 | msg_set_origport(msg, p_ptr->publ.ref); | |
1214 | msg_set_transp_seqno(msg, 42); | |
1215 | msg_set_type(msg, TIPC_CONN_MSG); | |
1216 | if (!may_route(peer->node)) | |
1217 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1218 | else | |
1219 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1220 | ||
1221 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1222 | p_ptr->probing_state = CONFIRMED; | |
1223 | p_ptr->publ.connected = 1; | |
1224 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1225 | ||
4323add6 | 1226 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1227 | (void *)(unsigned long)ref, |
b97bf3fd PL |
1228 | (net_ev_handler)port_handle_node_down); |
1229 | res = TIPC_OK; | |
1230 | exit: | |
4323add6 | 1231 | tipc_port_unlock(p_ptr); |
05646c91 | 1232 | p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1233 | return res; |
1234 | } | |
1235 | ||
0c3141e9 AS |
1236 | /** |
1237 | * tipc_disconnect_port - disconnect port from peer | |
1238 | * | |
1239 | * Port must be locked. | |
1240 | */ | |
1241 | ||
1242 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1243 | { | |
1244 | int res; | |
1245 | ||
1246 | if (tp_ptr->connected) { | |
1247 | tp_ptr->connected = 0; | |
1248 | /* let timer expire on it's own to avoid deadlock! */ | |
1249 | tipc_nodesub_unsubscribe( | |
1250 | &((struct port *)tp_ptr)->subscription); | |
1251 | res = TIPC_OK; | |
1252 | } else { | |
1253 | res = -ENOTCONN; | |
1254 | } | |
1255 | return res; | |
1256 | } | |
1257 | ||
b97bf3fd PL |
1258 | /* |
1259 | * tipc_disconnect(): Disconnect port form peer. | |
1260 | * This is a node local operation. | |
1261 | */ | |
1262 | ||
1263 | int tipc_disconnect(u32 ref) | |
1264 | { | |
1265 | struct port *p_ptr; | |
0c3141e9 | 1266 | int res; |
b97bf3fd | 1267 | |
4323add6 | 1268 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1269 | if (!p_ptr) |
1270 | return -EINVAL; | |
0c3141e9 | 1271 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1272 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1273 | return res; |
1274 | } | |
1275 | ||
1276 | /* | |
1277 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1278 | */ | |
1279 | int tipc_shutdown(u32 ref) | |
1280 | { | |
1281 | struct port *p_ptr; | |
1fc54d8f | 1282 | struct sk_buff *buf = NULL; |
b97bf3fd | 1283 | |
4323add6 | 1284 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1285 | if (!p_ptr) |
1286 | return -EINVAL; | |
1287 | ||
1288 | if (p_ptr->publ.connected) { | |
1289 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1290 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1291 | imp++; | |
1292 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1293 | port_peernode(p_ptr), | |
1294 | ref, | |
1295 | tipc_own_addr, | |
1296 | imp, | |
1297 | TIPC_CONN_MSG, | |
c4307285 | 1298 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1299 | port_out_seqno(p_ptr), |
1300 | 0); | |
1301 | } | |
4323add6 PL |
1302 | tipc_port_unlock(p_ptr); |
1303 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1304 | return tipc_disconnect(ref); |
1305 | } | |
1306 | ||
1307 | int tipc_isconnected(u32 ref, int *isconnected) | |
1308 | { | |
1309 | struct port *p_ptr; | |
c4307285 | 1310 | |
4323add6 | 1311 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1312 | if (!p_ptr) |
1313 | return -EINVAL; | |
1314 | *isconnected = p_ptr->publ.connected; | |
4323add6 | 1315 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1316 | return TIPC_OK; |
1317 | } | |
1318 | ||
1319 | int tipc_peer(u32 ref, struct tipc_portid *peer) | |
1320 | { | |
1321 | struct port *p_ptr; | |
1322 | int res; | |
c4307285 | 1323 | |
4323add6 | 1324 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1325 | if (!p_ptr) |
1326 | return -EINVAL; | |
1327 | if (p_ptr->publ.connected) { | |
1328 | peer->ref = port_peerport(p_ptr); | |
1329 | peer->node = port_peernode(p_ptr); | |
1330 | res = TIPC_OK; | |
1331 | } else | |
1332 | res = -ENOTCONN; | |
4323add6 | 1333 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1334 | return res; |
1335 | } | |
1336 | ||
1337 | int tipc_ref_valid(u32 ref) | |
1338 | { | |
1339 | /* Works irrespective of type */ | |
4323add6 | 1340 | return !!tipc_ref_deref(ref); |
b97bf3fd PL |
1341 | } |
1342 | ||
1343 | ||
1344 | /* | |
4323add6 | 1345 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1346 | * message for this node. |
1347 | */ | |
1348 | ||
4323add6 | 1349 | int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
b97bf3fd PL |
1350 | struct iovec const *msg_sect) |
1351 | { | |
1352 | struct sk_buff *buf; | |
1353 | int res; | |
c4307285 | 1354 | |
b97bf3fd PL |
1355 | res = msg_build(&sender->publ.phdr, msg_sect, num_sect, |
1356 | MAX_MSG_SIZE, !sender->user_port, &buf); | |
1357 | if (likely(buf)) | |
4323add6 | 1358 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1359 | return res; |
1360 | } | |
1361 | ||
1362 | /** | |
1363 | * tipc_send - send message sections on connection | |
1364 | */ | |
1365 | ||
1366 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1367 | { | |
1368 | struct port *p_ptr; | |
1369 | u32 destnode; | |
1370 | int res; | |
1371 | ||
4323add6 | 1372 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1373 | if (!p_ptr || !p_ptr->publ.connected) |
1374 | return -EINVAL; | |
1375 | ||
1376 | p_ptr->publ.congested = 1; | |
4323add6 | 1377 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1378 | destnode = port_peernode(p_ptr); |
1379 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1380 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1381 | destnode); | |
b97bf3fd | 1382 | else |
4323add6 | 1383 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1384 | |
1385 | if (likely(res != -ELINKCONG)) { | |
1386 | port_incr_out_seqno(p_ptr); | |
1387 | p_ptr->publ.congested = 0; | |
1388 | p_ptr->sent++; | |
1389 | return res; | |
1390 | } | |
1391 | } | |
1392 | if (port_unreliable(p_ptr)) { | |
1393 | p_ptr->publ.congested = 0; | |
1394 | /* Just calculate msg length and return */ | |
1395 | return msg_calc_data_size(msg_sect, num_sect); | |
1396 | } | |
1397 | return -ELINKCONG; | |
1398 | } | |
1399 | ||
c4307285 | 1400 | /** |
b97bf3fd PL |
1401 | * tipc_send_buf - send message buffer on connection |
1402 | */ | |
1403 | ||
1404 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) | |
1405 | { | |
1406 | struct port *p_ptr; | |
1407 | struct tipc_msg *msg; | |
1408 | u32 destnode; | |
1409 | u32 hsz; | |
1410 | u32 sz; | |
1411 | u32 res; | |
c4307285 | 1412 | |
4323add6 | 1413 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1414 | if (!p_ptr || !p_ptr->publ.connected) |
1415 | return -EINVAL; | |
1416 | ||
1417 | msg = &p_ptr->publ.phdr; | |
1418 | hsz = msg_hdr_sz(msg); | |
1419 | sz = hsz + dsz; | |
1420 | msg_set_size(msg, sz); | |
1421 | if (skb_cow(buf, hsz)) | |
1422 | return -ENOMEM; | |
1423 | ||
1424 | skb_push(buf, hsz); | |
27d7ff46 | 1425 | skb_copy_to_linear_data(buf, msg, hsz); |
b97bf3fd PL |
1426 | destnode = msg_destnode(msg); |
1427 | p_ptr->publ.congested = 1; | |
4323add6 | 1428 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1429 | if (likely(destnode != tipc_own_addr)) |
1430 | res = tipc_send_buf_fast(buf, destnode); | |
1431 | else { | |
4323add6 | 1432 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1433 | res = sz; |
1434 | } | |
1435 | if (likely(res != -ELINKCONG)) { | |
1436 | port_incr_out_seqno(p_ptr); | |
1437 | p_ptr->sent++; | |
1438 | p_ptr->publ.congested = 0; | |
1439 | return res; | |
1440 | } | |
1441 | } | |
1442 | if (port_unreliable(p_ptr)) { | |
1443 | p_ptr->publ.congested = 0; | |
1444 | return dsz; | |
1445 | } | |
1446 | return -ELINKCONG; | |
1447 | } | |
1448 | ||
1449 | /** | |
1450 | * tipc_forward2name - forward message sections to port name | |
1451 | */ | |
1452 | ||
c4307285 YH |
1453 | int tipc_forward2name(u32 ref, |
1454 | struct tipc_name const *name, | |
b97bf3fd | 1455 | u32 domain, |
c4307285 | 1456 | u32 num_sect, |
b97bf3fd | 1457 | struct iovec const *msg_sect, |
c4307285 | 1458 | struct tipc_portid const *orig, |
b97bf3fd PL |
1459 | unsigned int importance) |
1460 | { | |
1461 | struct port *p_ptr; | |
1462 | struct tipc_msg *msg; | |
1463 | u32 destnode = domain; | |
1464 | u32 destport = 0; | |
1465 | int res; | |
1466 | ||
4323add6 | 1467 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1468 | if (!p_ptr || p_ptr->publ.connected) |
1469 | return -EINVAL; | |
1470 | ||
1471 | msg = &p_ptr->publ.phdr; | |
1472 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1473 | msg_set_orignode(msg, orig->node); | |
1474 | msg_set_origport(msg, orig->ref); | |
1475 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1476 | msg_set_nametype(msg, name->type); | |
1477 | msg_set_nameinst(msg, name->instance); | |
1478 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1479 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1480 | msg_set_importance(msg,importance); | |
4323add6 | 1481 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1482 | msg_set_destnode(msg, destnode); |
1483 | msg_set_destport(msg, destport); | |
1484 | ||
1485 | if (likely(destport || destnode)) { | |
1486 | p_ptr->sent++; | |
1487 | if (likely(destnode == tipc_own_addr)) | |
4323add6 | 1488 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
c4307285 | 1489 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
4323add6 | 1490 | destnode); |
b97bf3fd PL |
1491 | if (likely(res != -ELINKCONG)) |
1492 | return res; | |
1493 | if (port_unreliable(p_ptr)) { | |
1494 | /* Just calculate msg length and return */ | |
1495 | return msg_calc_data_size(msg_sect, num_sect); | |
1496 | } | |
1497 | return -ELINKCONG; | |
1498 | } | |
c4307285 | 1499 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1500 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1501 | } |
1502 | ||
1503 | /** | |
1504 | * tipc_send2name - send message sections to port name | |
1505 | */ | |
1506 | ||
c4307285 | 1507 | int tipc_send2name(u32 ref, |
b97bf3fd | 1508 | struct tipc_name const *name, |
c4307285 YH |
1509 | unsigned int domain, |
1510 | unsigned int num_sect, | |
b97bf3fd PL |
1511 | struct iovec const *msg_sect) |
1512 | { | |
1513 | struct tipc_portid orig; | |
1514 | ||
1515 | orig.ref = ref; | |
1516 | orig.node = tipc_own_addr; | |
1517 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | |
1518 | TIPC_PORT_IMPORTANCE); | |
1519 | } | |
1520 | ||
c4307285 | 1521 | /** |
b97bf3fd PL |
1522 | * tipc_forward_buf2name - forward message buffer to port name |
1523 | */ | |
1524 | ||
1525 | int tipc_forward_buf2name(u32 ref, | |
1526 | struct tipc_name const *name, | |
1527 | u32 domain, | |
1528 | struct sk_buff *buf, | |
1529 | unsigned int dsz, | |
1530 | struct tipc_portid const *orig, | |
1531 | unsigned int importance) | |
1532 | { | |
1533 | struct port *p_ptr; | |
1534 | struct tipc_msg *msg; | |
1535 | u32 destnode = domain; | |
1536 | u32 destport = 0; | |
1537 | int res; | |
1538 | ||
4323add6 | 1539 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1540 | if (!p_ptr || p_ptr->publ.connected) |
1541 | return -EINVAL; | |
1542 | ||
1543 | msg = &p_ptr->publ.phdr; | |
1544 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1545 | msg_set_importance(msg, importance); | |
1546 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1547 | msg_set_orignode(msg, orig->node); | |
1548 | msg_set_origport(msg, orig->ref); | |
1549 | msg_set_nametype(msg, name->type); | |
1550 | msg_set_nameinst(msg, name->instance); | |
1551 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1552 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1553 | msg_set_size(msg, LONG_H_SIZE + dsz); | |
4323add6 | 1554 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1555 | msg_set_destnode(msg, destnode); |
1556 | msg_set_destport(msg, destport); | |
1557 | msg_dbg(msg, "forw2name ==> "); | |
1558 | if (skb_cow(buf, LONG_H_SIZE)) | |
1559 | return -ENOMEM; | |
1560 | skb_push(buf, LONG_H_SIZE); | |
27d7ff46 | 1561 | skb_copy_to_linear_data(buf, msg, LONG_H_SIZE); |
b97bf3fd PL |
1562 | msg_dbg(buf_msg(buf),"PREP:"); |
1563 | if (likely(destport || destnode)) { | |
1564 | p_ptr->sent++; | |
1565 | if (destnode == tipc_own_addr) | |
4323add6 | 1566 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1567 | res = tipc_send_buf_fast(buf, destnode); |
1568 | if (likely(res != -ELINKCONG)) | |
1569 | return res; | |
1570 | if (port_unreliable(p_ptr)) | |
1571 | return dsz; | |
1572 | return -ELINKCONG; | |
1573 | } | |
1574 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); | |
1575 | } | |
1576 | ||
c4307285 | 1577 | /** |
b97bf3fd PL |
1578 | * tipc_send_buf2name - send message buffer to port name |
1579 | */ | |
1580 | ||
c4307285 YH |
1581 | int tipc_send_buf2name(u32 ref, |
1582 | struct tipc_name const *dest, | |
b97bf3fd | 1583 | u32 domain, |
c4307285 | 1584 | struct sk_buff *buf, |
b97bf3fd PL |
1585 | unsigned int dsz) |
1586 | { | |
1587 | struct tipc_portid orig; | |
1588 | ||
1589 | orig.ref = ref; | |
1590 | orig.node = tipc_own_addr; | |
1591 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, | |
1592 | TIPC_PORT_IMPORTANCE); | |
1593 | } | |
1594 | ||
c4307285 | 1595 | /** |
b97bf3fd PL |
1596 | * tipc_forward2port - forward message sections to port identity |
1597 | */ | |
1598 | ||
1599 | int tipc_forward2port(u32 ref, | |
1600 | struct tipc_portid const *dest, | |
c4307285 | 1601 | unsigned int num_sect, |
b97bf3fd | 1602 | struct iovec const *msg_sect, |
c4307285 | 1603 | struct tipc_portid const *orig, |
b97bf3fd PL |
1604 | unsigned int importance) |
1605 | { | |
1606 | struct port *p_ptr; | |
1607 | struct tipc_msg *msg; | |
1608 | int res; | |
1609 | ||
4323add6 | 1610 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1611 | if (!p_ptr || p_ptr->publ.connected) |
1612 | return -EINVAL; | |
1613 | ||
1614 | msg = &p_ptr->publ.phdr; | |
1615 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1616 | msg_set_orignode(msg, orig->node); | |
1617 | msg_set_origport(msg, orig->ref); | |
1618 | msg_set_destnode(msg, dest->node); | |
1619 | msg_set_destport(msg, dest->ref); | |
1620 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1621 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1622 | msg_set_importance(msg, importance); | |
1623 | p_ptr->sent++; | |
1624 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1625 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1626 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1627 | if (likely(res != -ELINKCONG)) |
1628 | return res; | |
1629 | if (port_unreliable(p_ptr)) { | |
1630 | /* Just calculate msg length and return */ | |
1631 | return msg_calc_data_size(msg_sect, num_sect); | |
1632 | } | |
1633 | return -ELINKCONG; | |
1634 | } | |
1635 | ||
c4307285 YH |
1636 | /** |
1637 | * tipc_send2port - send message sections to port identity | |
b97bf3fd PL |
1638 | */ |
1639 | ||
c4307285 | 1640 | int tipc_send2port(u32 ref, |
b97bf3fd | 1641 | struct tipc_portid const *dest, |
c4307285 | 1642 | unsigned int num_sect, |
b97bf3fd PL |
1643 | struct iovec const *msg_sect) |
1644 | { | |
1645 | struct tipc_portid orig; | |
1646 | ||
1647 | orig.ref = ref; | |
1648 | orig.node = tipc_own_addr; | |
c4307285 | 1649 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, |
b97bf3fd PL |
1650 | TIPC_PORT_IMPORTANCE); |
1651 | } | |
1652 | ||
c4307285 | 1653 | /** |
b97bf3fd PL |
1654 | * tipc_forward_buf2port - forward message buffer to port identity |
1655 | */ | |
1656 | int tipc_forward_buf2port(u32 ref, | |
1657 | struct tipc_portid const *dest, | |
1658 | struct sk_buff *buf, | |
1659 | unsigned int dsz, | |
1660 | struct tipc_portid const *orig, | |
1661 | unsigned int importance) | |
1662 | { | |
1663 | struct port *p_ptr; | |
1664 | struct tipc_msg *msg; | |
1665 | int res; | |
1666 | ||
4323add6 | 1667 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1668 | if (!p_ptr || p_ptr->publ.connected) |
1669 | return -EINVAL; | |
1670 | ||
1671 | msg = &p_ptr->publ.phdr; | |
1672 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1673 | msg_set_orignode(msg, orig->node); | |
1674 | msg_set_origport(msg, orig->ref); | |
1675 | msg_set_destnode(msg, dest->node); | |
1676 | msg_set_destport(msg, dest->ref); | |
1677 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1678 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1679 | msg_set_importance(msg, importance); | |
1680 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | |
1681 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1682 | return -ENOMEM; | |
1683 | ||
1684 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1685 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
b97bf3fd PL |
1686 | msg_dbg(msg, "buf2port: "); |
1687 | p_ptr->sent++; | |
1688 | if (dest->node == tipc_own_addr) | |
4323add6 | 1689 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1690 | res = tipc_send_buf_fast(buf, dest->node); |
1691 | if (likely(res != -ELINKCONG)) | |
1692 | return res; | |
1693 | if (port_unreliable(p_ptr)) | |
1694 | return dsz; | |
1695 | return -ELINKCONG; | |
1696 | } | |
1697 | ||
c4307285 | 1698 | /** |
b97bf3fd PL |
1699 | * tipc_send_buf2port - send message buffer to port identity |
1700 | */ | |
1701 | ||
c4307285 | 1702 | int tipc_send_buf2port(u32 ref, |
b97bf3fd | 1703 | struct tipc_portid const *dest, |
c4307285 | 1704 | struct sk_buff *buf, |
b97bf3fd PL |
1705 | unsigned int dsz) |
1706 | { | |
1707 | struct tipc_portid orig; | |
1708 | ||
1709 | orig.ref = ref; | |
1710 | orig.node = tipc_own_addr; | |
c4307285 | 1711 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, |
b97bf3fd PL |
1712 | TIPC_PORT_IMPORTANCE); |
1713 | } | |
1714 |