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; | |
75715217 | 247 | msg_init(msg, TIPC_LOW_IMPORTANCE, TIPC_NAMED_MSG, LONG_H_SIZE, 0); |
b97bf3fd PL |
248 | msg_set_orignode(msg, tipc_own_addr); |
249 | msg_set_prevnode(msg, tipc_own_addr); | |
250 | msg_set_origport(msg, ref); | |
251 | msg_set_importance(msg,importance); | |
252 | p_ptr->last_in_seqno = 41; | |
253 | p_ptr->sent = 1; | |
b97bf3fd PL |
254 | INIT_LIST_HEAD(&p_ptr->wait_list); |
255 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
1fc54d8f | 256 | p_ptr->congested_link = NULL; |
b97bf3fd PL |
257 | p_ptr->dispatcher = dispatcher; |
258 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 259 | p_ptr->user_port = NULL; |
b97bf3fd | 260 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 261 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
262 | INIT_LIST_HEAD(&p_ptr->publications); |
263 | INIT_LIST_HEAD(&p_ptr->port_list); | |
264 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 | 265 | spin_unlock_bh(&tipc_port_list_lock); |
7ef43eba | 266 | *tp_ptr = &p_ptr->publ; |
b97bf3fd PL |
267 | return ref; |
268 | } | |
269 | ||
270 | int tipc_deleteport(u32 ref) | |
271 | { | |
272 | struct port *p_ptr; | |
1fc54d8f | 273 | struct sk_buff *buf = NULL; |
b97bf3fd | 274 | |
1fc54d8f | 275 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 276 | p_ptr = tipc_port_lock(ref); |
c4307285 | 277 | if (!p_ptr) |
b97bf3fd PL |
278 | return -EINVAL; |
279 | ||
4323add6 PL |
280 | tipc_ref_discard(ref); |
281 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
282 | |
283 | k_cancel_timer(&p_ptr->timer); | |
284 | if (p_ptr->publ.connected) { | |
285 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
4323add6 | 286 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
287 | } |
288 | if (p_ptr->user_port) { | |
4323add6 | 289 | tipc_reg_remove_port(p_ptr->user_port); |
b97bf3fd PL |
290 | kfree(p_ptr->user_port); |
291 | } | |
292 | ||
4323add6 | 293 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
294 | list_del(&p_ptr->port_list); |
295 | list_del(&p_ptr->wait_list); | |
4323add6 | 296 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
297 | k_term_timer(&p_ptr->timer); |
298 | kfree(p_ptr); | |
299 | dbg("Deleted port %u\n", ref); | |
4323add6 | 300 | tipc_net_route_msg(buf); |
b97bf3fd PL |
301 | return TIPC_OK; |
302 | } | |
303 | ||
304 | /** | |
305 | * tipc_get_port() - return port associated with 'ref' | |
c4307285 | 306 | * |
b97bf3fd PL |
307 | * Note: Port is not locked. |
308 | */ | |
309 | ||
310 | struct tipc_port *tipc_get_port(const u32 ref) | |
311 | { | |
4323add6 | 312 | return (struct tipc_port *)tipc_ref_deref(ref); |
b97bf3fd PL |
313 | } |
314 | ||
315 | /** | |
316 | * tipc_get_handle - return user handle associated to port 'ref' | |
317 | */ | |
318 | ||
319 | void *tipc_get_handle(const u32 ref) | |
320 | { | |
321 | struct port *p_ptr; | |
322 | void * handle; | |
323 | ||
4323add6 | 324 | p_ptr = tipc_port_lock(ref); |
b97bf3fd | 325 | if (!p_ptr) |
1fc54d8f | 326 | return NULL; |
b97bf3fd | 327 | handle = p_ptr->publ.usr_handle; |
4323add6 | 328 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
329 | return handle; |
330 | } | |
331 | ||
05790c64 | 332 | static int port_unreliable(struct port *p_ptr) |
b97bf3fd PL |
333 | { |
334 | return msg_src_droppable(&p_ptr->publ.phdr); | |
335 | } | |
336 | ||
337 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
338 | { | |
339 | struct port *p_ptr; | |
c4307285 | 340 | |
4323add6 | 341 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
342 | if (!p_ptr) |
343 | return -EINVAL; | |
344 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 345 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
346 | return TIPC_OK; |
347 | } | |
348 | ||
349 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
350 | { | |
351 | struct port *p_ptr; | |
c4307285 | 352 | |
4323add6 | 353 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
354 | if (!p_ptr) |
355 | return -EINVAL; | |
356 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | |
4323add6 | 357 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
358 | return TIPC_OK; |
359 | } | |
360 | ||
05790c64 | 361 | static int port_unreturnable(struct port *p_ptr) |
b97bf3fd PL |
362 | { |
363 | return msg_dest_droppable(&p_ptr->publ.phdr); | |
364 | } | |
365 | ||
366 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
367 | { | |
368 | struct port *p_ptr; | |
c4307285 | 369 | |
4323add6 | 370 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
371 | if (!p_ptr) |
372 | return -EINVAL; | |
373 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 374 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
375 | return TIPC_OK; |
376 | } | |
377 | ||
378 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
379 | { | |
380 | struct port *p_ptr; | |
c4307285 | 381 | |
4323add6 | 382 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
383 | if (!p_ptr) |
384 | return -EINVAL; | |
385 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | |
4323add6 | 386 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
387 | return TIPC_OK; |
388 | } | |
389 | ||
c4307285 YH |
390 | /* |
391 | * port_build_proto_msg(): build a port level protocol | |
392 | * or a connection abortion message. Called with | |
b97bf3fd PL |
393 | * tipc_port lock on. |
394 | */ | |
395 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
396 | u32 origport, u32 orignode, | |
c4307285 | 397 | u32 usr, u32 type, u32 err, |
b97bf3fd PL |
398 | u32 seqno, u32 ack) |
399 | { | |
400 | struct sk_buff *buf; | |
401 | struct tipc_msg *msg; | |
c4307285 | 402 | |
b97bf3fd PL |
403 | buf = buf_acquire(LONG_H_SIZE); |
404 | if (buf) { | |
405 | msg = buf_msg(buf); | |
75715217 AS |
406 | msg_init(msg, usr, type, LONG_H_SIZE, destnode); |
407 | msg_set_errcode(msg, err); | |
b97bf3fd PL |
408 | msg_set_destport(msg, destport); |
409 | msg_set_origport(msg, origport); | |
410 | msg_set_destnode(msg, destnode); | |
411 | msg_set_orignode(msg, orignode); | |
412 | msg_set_transp_seqno(msg, seqno); | |
413 | msg_set_msgcnt(msg, ack); | |
414 | msg_dbg(msg, "PORT>SEND>:"); | |
415 | } | |
416 | return buf; | |
417 | } | |
418 | ||
b97bf3fd PL |
419 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
420 | { | |
421 | struct tipc_msg *msg = buf_msg(buf); | |
422 | struct sk_buff *rbuf; | |
423 | struct tipc_msg *rmsg; | |
424 | int hdr_sz; | |
425 | u32 imp = msg_importance(msg); | |
426 | u32 data_sz = msg_data_sz(msg); | |
427 | ||
428 | if (data_sz > MAX_REJECT_SIZE) | |
429 | data_sz = MAX_REJECT_SIZE; | |
430 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
431 | imp++; | |
432 | msg_dbg(msg, "port->rej: "); | |
433 | ||
434 | /* discard rejected message if it shouldn't be returned to sender */ | |
435 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
436 | buf_discard(buf); | |
437 | return data_sz; | |
438 | } | |
439 | ||
440 | /* construct rejected message */ | |
441 | if (msg_mcast(msg)) | |
442 | hdr_sz = MCAST_H_SIZE; | |
443 | else | |
444 | hdr_sz = LONG_H_SIZE; | |
445 | rbuf = buf_acquire(data_sz + hdr_sz); | |
446 | if (rbuf == NULL) { | |
447 | buf_discard(buf); | |
448 | return data_sz; | |
449 | } | |
450 | rmsg = buf_msg(rbuf); | |
75715217 AS |
451 | msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg)); |
452 | msg_set_errcode(rmsg, err); | |
b97bf3fd PL |
453 | msg_set_destport(rmsg, msg_origport(msg)); |
454 | msg_set_prevnode(rmsg, tipc_own_addr); | |
455 | msg_set_origport(rmsg, msg_destport(msg)); | |
456 | if (msg_short(msg)) | |
457 | msg_set_orignode(rmsg, tipc_own_addr); | |
458 | else | |
459 | msg_set_orignode(rmsg, msg_destnode(msg)); | |
c4307285 | 460 | msg_set_size(rmsg, data_sz + hdr_sz); |
b97bf3fd PL |
461 | msg_set_nametype(rmsg, msg_nametype(msg)); |
462 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
27d7ff46 | 463 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
464 | |
465 | /* send self-abort message when rejecting on a connected port */ | |
466 | if (msg_connected(msg)) { | |
1fc54d8f | 467 | struct sk_buff *abuf = NULL; |
4323add6 | 468 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
469 | |
470 | if (p_ptr) { | |
471 | if (p_ptr->publ.connected) | |
472 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 473 | tipc_port_unlock(p_ptr); |
b97bf3fd | 474 | } |
4323add6 | 475 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
476 | } |
477 | ||
478 | /* send rejected message */ | |
479 | buf_discard(buf); | |
4323add6 | 480 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
481 | return data_sz; |
482 | } | |
483 | ||
4323add6 PL |
484 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
485 | struct iovec const *msg_sect, u32 num_sect, | |
486 | int err) | |
b97bf3fd PL |
487 | { |
488 | struct sk_buff *buf; | |
489 | int res; | |
490 | ||
c4307285 | 491 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
492 | !p_ptr->user_port, &buf); |
493 | if (!buf) | |
494 | return res; | |
495 | ||
496 | return tipc_reject_msg(buf, err); | |
497 | } | |
498 | ||
499 | static void port_timeout(unsigned long ref) | |
500 | { | |
4323add6 | 501 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 502 | struct sk_buff *buf = NULL; |
b97bf3fd | 503 | |
065fd177 AS |
504 | if (!p_ptr) |
505 | return; | |
506 | ||
507 | if (!p_ptr->publ.connected) { | |
508 | tipc_port_unlock(p_ptr); | |
b97bf3fd | 509 | return; |
065fd177 | 510 | } |
b97bf3fd PL |
511 | |
512 | /* Last probe answered ? */ | |
513 | if (p_ptr->probing_state == PROBING) { | |
514 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
515 | } else { | |
516 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
517 | port_peernode(p_ptr), | |
518 | p_ptr->publ.ref, | |
519 | tipc_own_addr, | |
520 | CONN_MANAGER, | |
521 | CONN_PROBE, | |
c4307285 | 522 | TIPC_OK, |
b97bf3fd PL |
523 | port_out_seqno(p_ptr), |
524 | 0); | |
525 | port_incr_out_seqno(p_ptr); | |
526 | p_ptr->probing_state = PROBING; | |
527 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
528 | } | |
4323add6 PL |
529 | tipc_port_unlock(p_ptr); |
530 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
531 | } |
532 | ||
533 | ||
534 | static void port_handle_node_down(unsigned long ref) | |
535 | { | |
4323add6 | 536 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 537 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
538 | |
539 | if (!p_ptr) | |
540 | return; | |
541 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
542 | tipc_port_unlock(p_ptr); |
543 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
544 | } |
545 | ||
546 | ||
547 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
548 | { | |
549 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
550 | ||
551 | if (!p_ptr->publ.connected) | |
1fc54d8f | 552 | return NULL; |
b97bf3fd PL |
553 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
554 | imp++; | |
555 | return port_build_proto_msg(p_ptr->publ.ref, | |
556 | tipc_own_addr, | |
557 | port_peerport(p_ptr), | |
558 | port_peernode(p_ptr), | |
559 | imp, | |
560 | TIPC_CONN_MSG, | |
c4307285 | 561 | err, |
b97bf3fd PL |
562 | p_ptr->last_in_seqno + 1, |
563 | 0); | |
564 | } | |
565 | ||
566 | ||
567 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
568 | { | |
569 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
570 | ||
571 | if (!p_ptr->publ.connected) | |
1fc54d8f | 572 | return NULL; |
b97bf3fd PL |
573 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
574 | imp++; | |
575 | return port_build_proto_msg(port_peerport(p_ptr), | |
576 | port_peernode(p_ptr), | |
577 | p_ptr->publ.ref, | |
578 | tipc_own_addr, | |
579 | imp, | |
580 | TIPC_CONN_MSG, | |
c4307285 | 581 | err, |
b97bf3fd PL |
582 | port_out_seqno(p_ptr), |
583 | 0); | |
584 | } | |
585 | ||
4323add6 | 586 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
587 | { |
588 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 589 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 590 | u32 err = TIPC_OK; |
1fc54d8f SR |
591 | struct sk_buff *r_buf = NULL; |
592 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd PL |
593 | |
594 | msg_dbg(msg, "PORT<RECV<:"); | |
595 | ||
596 | if (!p_ptr) { | |
597 | err = TIPC_ERR_NO_PORT; | |
598 | } else if (p_ptr->publ.connected) { | |
599 | if (port_peernode(p_ptr) != msg_orignode(msg)) | |
600 | err = TIPC_ERR_NO_PORT; | |
601 | if (port_peerport(p_ptr) != msg_origport(msg)) | |
602 | err = TIPC_ERR_NO_PORT; | |
603 | if (!err && msg_routed(msg)) { | |
604 | u32 seqno = msg_transp_seqno(msg); | |
605 | u32 myno = ++p_ptr->last_in_seqno; | |
606 | if (seqno != myno) { | |
607 | err = TIPC_ERR_NO_PORT; | |
608 | abort_buf = port_build_self_abort_msg(p_ptr, err); | |
609 | } | |
610 | } | |
611 | if (msg_type(msg) == CONN_ACK) { | |
c4307285 | 612 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
613 | p_ptr->publ.congested && |
614 | p_ptr->wakeup; | |
615 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 616 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
617 | goto exit; |
618 | p_ptr->publ.congested = 0; | |
619 | if (!wakeup) | |
620 | goto exit; | |
621 | p_ptr->wakeup(&p_ptr->publ); | |
622 | goto exit; | |
623 | } | |
624 | } else if (p_ptr->publ.published) { | |
625 | err = TIPC_ERR_NO_PORT; | |
626 | } | |
627 | if (err) { | |
628 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
629 | msg_orignode(msg), |
630 | msg_destport(msg), | |
b97bf3fd | 631 | tipc_own_addr, |
06d82c91 | 632 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
633 | TIPC_CONN_MSG, |
634 | err, | |
635 | 0, | |
636 | 0); | |
637 | goto exit; | |
638 | } | |
639 | ||
640 | /* All is fine */ | |
641 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
642 | r_buf = port_build_proto_msg(msg_origport(msg), |
643 | msg_orignode(msg), | |
644 | msg_destport(msg), | |
645 | tipc_own_addr, | |
b97bf3fd PL |
646 | CONN_MANAGER, |
647 | CONN_PROBE_REPLY, | |
648 | TIPC_OK, | |
649 | port_out_seqno(p_ptr), | |
650 | 0); | |
651 | } | |
652 | p_ptr->probing_state = CONFIRMED; | |
653 | port_incr_out_seqno(p_ptr); | |
654 | exit: | |
655 | if (p_ptr) | |
4323add6 PL |
656 | tipc_port_unlock(p_ptr); |
657 | tipc_net_route_msg(r_buf); | |
658 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
659 | buf_discard(buf); |
660 | } | |
661 | ||
662 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
663 | { | |
c4307285 | 664 | struct publication *publ; |
b97bf3fd PL |
665 | |
666 | if (full_id) | |
c4307285 | 667 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 668 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
c4307285 | 669 | tipc_node(tipc_own_addr), p_ptr->publ.ref); |
b97bf3fd PL |
670 | else |
671 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
672 | ||
c4307285 YH |
673 | if (p_ptr->publ.connected) { |
674 | u32 dport = port_peerport(p_ptr); | |
675 | u32 destnode = port_peernode(p_ptr); | |
676 | ||
677 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
678 | tipc_zone(destnode), tipc_cluster(destnode), | |
679 | tipc_node(destnode), dport); | |
680 | if (p_ptr->publ.conn_type != 0) | |
681 | tipc_printf(buf, " via {%u,%u}", | |
682 | p_ptr->publ.conn_type, | |
683 | p_ptr->publ.conn_instance); | |
684 | } | |
685 | else if (p_ptr->publ.published) { | |
686 | tipc_printf(buf, " bound to"); | |
687 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
688 | if (publ->lower == publ->upper) |
689 | tipc_printf(buf, " {%u,%u}", publ->type, | |
690 | publ->lower); | |
691 | else | |
c4307285 | 692 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 693 | publ->lower, publ->upper); |
c4307285 YH |
694 | } |
695 | } | |
696 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
697 | } |
698 | ||
699 | #define MAX_PORT_QUERY 32768 | |
700 | ||
4323add6 | 701 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
702 | { |
703 | struct sk_buff *buf; | |
704 | struct tlv_desc *rep_tlv; | |
705 | struct print_buf pb; | |
706 | struct port *p_ptr; | |
707 | int str_len; | |
708 | ||
4323add6 | 709 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
710 | if (!buf) |
711 | return NULL; | |
712 | rep_tlv = (struct tlv_desc *)buf->data; | |
713 | ||
4323add6 PL |
714 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
715 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
716 | list_for_each_entry(p_ptr, &ports, port_list) { |
717 | spin_lock_bh(p_ptr->publ.lock); | |
718 | port_print(p_ptr, &pb, 0); | |
719 | spin_unlock_bh(p_ptr->publ.lock); | |
720 | } | |
4323add6 PL |
721 | spin_unlock_bh(&tipc_port_list_lock); |
722 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
723 | |
724 | skb_put(buf, TLV_SPACE(str_len)); | |
725 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
726 | ||
727 | return buf; | |
728 | } | |
729 | ||
730 | #if 0 | |
731 | ||
732 | #define MAX_PORT_STATS 2000 | |
733 | ||
734 | struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) | |
735 | { | |
736 | u32 ref; | |
737 | struct port *p_ptr; | |
738 | struct sk_buff *buf; | |
739 | struct tlv_desc *rep_tlv; | |
740 | struct print_buf pb; | |
741 | int str_len; | |
742 | ||
743 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) | |
744 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
745 | ||
746 | ref = *(u32 *)TLV_DATA(req_tlv_area); | |
747 | ref = ntohl(ref); | |
748 | ||
4323add6 | 749 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
750 | if (!p_ptr) |
751 | return cfg_reply_error_string("port not found"); | |
752 | ||
4323add6 | 753 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); |
b97bf3fd | 754 | if (!buf) { |
4323add6 | 755 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
756 | return NULL; |
757 | } | |
758 | rep_tlv = (struct tlv_desc *)buf->data; | |
759 | ||
4323add6 | 760 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); |
b97bf3fd PL |
761 | port_print(p_ptr, &pb, 1); |
762 | /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ | |
4323add6 PL |
763 | tipc_port_unlock(p_ptr); |
764 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
765 | |
766 | skb_put(buf, TLV_SPACE(str_len)); | |
767 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
768 | ||
769 | return buf; | |
770 | } | |
771 | ||
772 | #endif | |
773 | ||
4323add6 | 774 | void tipc_port_reinit(void) |
b97bf3fd PL |
775 | { |
776 | struct port *p_ptr; | |
777 | struct tipc_msg *msg; | |
778 | ||
4323add6 | 779 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
780 | list_for_each_entry(p_ptr, &ports, port_list) { |
781 | msg = &p_ptr->publ.phdr; | |
782 | if (msg_orignode(msg) == tipc_own_addr) | |
783 | break; | |
6d4a6672 | 784 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
785 | msg_set_orignode(msg, tipc_own_addr); |
786 | } | |
4323add6 | 787 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
788 | } |
789 | ||
790 | ||
791 | /* | |
792 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
793 | * to the tipc_port interface. | |
794 | */ | |
795 | ||
796 | static void port_dispatcher_sigh(void *dummy) | |
797 | { | |
798 | struct sk_buff *buf; | |
799 | ||
800 | spin_lock_bh(&queue_lock); | |
801 | buf = msg_queue_head; | |
1fc54d8f | 802 | msg_queue_head = NULL; |
b97bf3fd PL |
803 | spin_unlock_bh(&queue_lock); |
804 | ||
805 | while (buf) { | |
806 | struct port *p_ptr; | |
807 | struct user_port *up_ptr; | |
808 | struct tipc_portid orig; | |
809 | struct tipc_name_seq dseq; | |
810 | void *usr_handle; | |
811 | int connected; | |
812 | int published; | |
9688243b | 813 | u32 message_type; |
b97bf3fd PL |
814 | |
815 | struct sk_buff *next = buf->next; | |
816 | struct tipc_msg *msg = buf_msg(buf); | |
817 | u32 dref = msg_destport(msg); | |
c4307285 | 818 | |
9688243b AS |
819 | message_type = msg_type(msg); |
820 | if (message_type > TIPC_DIRECT_MSG) | |
821 | goto reject; /* Unsupported message type */ | |
822 | ||
4323add6 | 823 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
824 | if (!p_ptr) |
825 | goto reject; /* Port deleted while msg in queue */ | |
826 | ||
b97bf3fd PL |
827 | orig.ref = msg_origport(msg); |
828 | orig.node = msg_orignode(msg); | |
829 | up_ptr = p_ptr->user_port; | |
830 | usr_handle = up_ptr->usr_handle; | |
831 | connected = p_ptr->publ.connected; | |
832 | published = p_ptr->publ.published; | |
833 | ||
834 | if (unlikely(msg_errcode(msg))) | |
835 | goto err; | |
836 | ||
9688243b | 837 | switch (message_type) { |
c4307285 | 838 | |
b97bf3fd PL |
839 | case TIPC_CONN_MSG:{ |
840 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
841 | u32 peer_port = port_peerport(p_ptr); | |
842 | u32 peer_node = port_peernode(p_ptr); | |
843 | ||
4cec72c8 | 844 | tipc_port_unlock(p_ptr); |
5307e469 AS |
845 | if (unlikely(!cb)) |
846 | goto reject; | |
b97bf3fd | 847 | if (unlikely(!connected)) { |
84b07c16 | 848 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 849 | goto reject; |
84b07c16 AS |
850 | } else if ((msg_origport(msg) != peer_port) || |
851 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 852 | goto reject; |
c4307285 | 853 | if (unlikely(++p_ptr->publ.conn_unacked >= |
b97bf3fd | 854 | TIPC_FLOW_CONTROL_WIN)) |
c4307285 | 855 | tipc_acknowledge(dref, |
b97bf3fd PL |
856 | p_ptr->publ.conn_unacked); |
857 | skb_pull(buf, msg_hdr_sz(msg)); | |
858 | cb(usr_handle, dref, &buf, msg_data(msg), | |
859 | msg_data_sz(msg)); | |
860 | break; | |
861 | } | |
862 | case TIPC_DIRECT_MSG:{ | |
863 | tipc_msg_event cb = up_ptr->msg_cb; | |
864 | ||
4cec72c8 | 865 | tipc_port_unlock(p_ptr); |
5307e469 | 866 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
867 | goto reject; |
868 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 869 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
870 | msg_data_sz(msg), msg_importance(msg), |
871 | &orig); | |
872 | break; | |
873 | } | |
9688243b | 874 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
875 | case TIPC_NAMED_MSG:{ |
876 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
877 | ||
4cec72c8 | 878 | tipc_port_unlock(p_ptr); |
5307e469 | 879 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
880 | goto reject; |
881 | dseq.type = msg_nametype(msg); | |
882 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
883 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
884 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 885 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 886 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
887 | msg_data_sz(msg), msg_importance(msg), |
888 | &orig, &dseq); | |
889 | break; | |
890 | } | |
891 | } | |
892 | if (buf) | |
893 | buf_discard(buf); | |
894 | buf = next; | |
895 | continue; | |
896 | err: | |
9688243b | 897 | switch (message_type) { |
c4307285 | 898 | |
b97bf3fd | 899 | case TIPC_CONN_MSG:{ |
c4307285 | 900 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
901 | up_ptr->conn_err_cb; |
902 | u32 peer_port = port_peerport(p_ptr); | |
903 | u32 peer_node = port_peernode(p_ptr); | |
904 | ||
4cec72c8 | 905 | tipc_port_unlock(p_ptr); |
5307e469 | 906 | if (!cb || !connected) |
b97bf3fd | 907 | break; |
5307e469 AS |
908 | if ((msg_origport(msg) != peer_port) || |
909 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
910 | break; |
911 | tipc_disconnect(dref); | |
912 | skb_pull(buf, msg_hdr_sz(msg)); | |
913 | cb(usr_handle, dref, &buf, msg_data(msg), | |
914 | msg_data_sz(msg), msg_errcode(msg)); | |
915 | break; | |
916 | } | |
917 | case TIPC_DIRECT_MSG:{ | |
918 | tipc_msg_err_event cb = up_ptr->err_cb; | |
919 | ||
4cec72c8 | 920 | tipc_port_unlock(p_ptr); |
5307e469 | 921 | if (!cb || connected) |
b97bf3fd PL |
922 | break; |
923 | skb_pull(buf, msg_hdr_sz(msg)); | |
924 | cb(usr_handle, dref, &buf, msg_data(msg), | |
925 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
926 | break; | |
927 | } | |
9688243b | 928 | case TIPC_MCAST_MSG: |
b97bf3fd | 929 | case TIPC_NAMED_MSG:{ |
c4307285 | 930 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
931 | up_ptr->named_err_cb; |
932 | ||
4cec72c8 | 933 | tipc_port_unlock(p_ptr); |
5307e469 | 934 | if (!cb || connected) |
b97bf3fd PL |
935 | break; |
936 | dseq.type = msg_nametype(msg); | |
937 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
938 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
939 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 940 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 941 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
942 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
943 | break; | |
944 | } | |
945 | } | |
946 | if (buf) | |
947 | buf_discard(buf); | |
948 | buf = next; | |
949 | continue; | |
950 | reject: | |
951 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
952 | buf = next; | |
953 | } | |
954 | } | |
955 | ||
956 | /* | |
957 | * port_dispatcher(): Dispatcher for messages destinated | |
958 | * to the tipc_port interface. Called with port locked. | |
959 | */ | |
960 | ||
961 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
962 | { | |
963 | buf->next = NULL; | |
964 | spin_lock_bh(&queue_lock); | |
965 | if (msg_queue_head) { | |
966 | msg_queue_tail->next = buf; | |
967 | msg_queue_tail = buf; | |
968 | } else { | |
969 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 970 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
971 | } |
972 | spin_unlock_bh(&queue_lock); | |
973 | return TIPC_OK; | |
974 | } | |
975 | ||
c4307285 | 976 | /* |
b97bf3fd | 977 | * Wake up port after congestion: Called with port locked, |
c4307285 | 978 | * |
b97bf3fd PL |
979 | */ |
980 | ||
981 | static void port_wakeup_sh(unsigned long ref) | |
982 | { | |
983 | struct port *p_ptr; | |
984 | struct user_port *up_ptr; | |
1fc54d8f SR |
985 | tipc_continue_event cb = NULL; |
986 | void *uh = NULL; | |
b97bf3fd | 987 | |
4323add6 | 988 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
989 | if (p_ptr) { |
990 | up_ptr = p_ptr->user_port; | |
991 | if (up_ptr) { | |
992 | cb = up_ptr->continue_event_cb; | |
993 | uh = up_ptr->usr_handle; | |
994 | } | |
4323add6 | 995 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
996 | } |
997 | if (cb) | |
998 | cb(uh, ref); | |
999 | } | |
1000 | ||
1001 | ||
1002 | static void port_wakeup(struct tipc_port *p_ptr) | |
1003 | { | |
4323add6 | 1004 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
1005 | } |
1006 | ||
1007 | void tipc_acknowledge(u32 ref, u32 ack) | |
1008 | { | |
1009 | struct port *p_ptr; | |
1fc54d8f | 1010 | struct sk_buff *buf = NULL; |
b97bf3fd | 1011 | |
4323add6 | 1012 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1013 | if (!p_ptr) |
1014 | return; | |
1015 | if (p_ptr->publ.connected) { | |
1016 | p_ptr->publ.conn_unacked -= ack; | |
1017 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1018 | port_peernode(p_ptr), | |
1019 | ref, | |
1020 | tipc_own_addr, | |
1021 | CONN_MANAGER, | |
1022 | CONN_ACK, | |
c4307285 | 1023 | TIPC_OK, |
b97bf3fd PL |
1024 | port_out_seqno(p_ptr), |
1025 | ack); | |
1026 | } | |
4323add6 PL |
1027 | tipc_port_unlock(p_ptr); |
1028 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1029 | } |
1030 | ||
1031 | /* | |
1032 | * tipc_createport(): user level call. Will add port to | |
1033 | * registry if non-zero user_ref. | |
1034 | */ | |
1035 | ||
c4307285 YH |
1036 | int tipc_createport(u32 user_ref, |
1037 | void *usr_handle, | |
1038 | unsigned int importance, | |
1039 | tipc_msg_err_event error_cb, | |
1040 | tipc_named_msg_err_event named_error_cb, | |
1041 | tipc_conn_shutdown_event conn_error_cb, | |
1042 | tipc_msg_event msg_cb, | |
1043 | tipc_named_msg_event named_msg_cb, | |
1044 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
1045 | tipc_continue_event continue_event_cb,/* May be zero */ |
1046 | u32 *portref) | |
1047 | { | |
1048 | struct user_port *up_ptr; | |
c4307285 | 1049 | struct port *p_ptr; |
7ef43eba | 1050 | struct tipc_port *tp_ptr; |
b97bf3fd PL |
1051 | u32 ref; |
1052 | ||
0da974f4 | 1053 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 1054 | if (!up_ptr) { |
a75bf874 | 1055 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
1056 | return -ENOMEM; |
1057 | } | |
7ef43eba AS |
1058 | ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, |
1059 | importance, &tp_ptr); | |
1060 | if (ref == 0) { | |
b97bf3fd PL |
1061 | kfree(up_ptr); |
1062 | return -ENOMEM; | |
1063 | } | |
7ef43eba | 1064 | p_ptr = (struct port *)tp_ptr; |
b97bf3fd PL |
1065 | |
1066 | p_ptr->user_port = up_ptr; | |
1067 | up_ptr->user_ref = user_ref; | |
1068 | up_ptr->usr_handle = usr_handle; | |
1069 | up_ptr->ref = p_ptr->publ.ref; | |
1070 | up_ptr->err_cb = error_cb; | |
1071 | up_ptr->named_err_cb = named_error_cb; | |
1072 | up_ptr->conn_err_cb = conn_error_cb; | |
1073 | up_ptr->msg_cb = msg_cb; | |
1074 | up_ptr->named_msg_cb = named_msg_cb; | |
1075 | up_ptr->conn_msg_cb = conn_msg_cb; | |
1076 | up_ptr->continue_event_cb = continue_event_cb; | |
1077 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 1078 | tipc_reg_add_port(up_ptr); |
b97bf3fd | 1079 | *portref = p_ptr->publ.ref; |
c4307285 | 1080 | dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref); |
4323add6 | 1081 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1082 | return TIPC_OK; |
1083 | } | |
1084 | ||
1085 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) | |
1086 | { | |
1087 | id->ref = ref; | |
1088 | id->node = tipc_own_addr; | |
1089 | return TIPC_OK; | |
1090 | } | |
1091 | ||
1092 | int tipc_portimportance(u32 ref, unsigned int *importance) | |
1093 | { | |
1094 | struct port *p_ptr; | |
c4307285 | 1095 | |
4323add6 | 1096 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1097 | if (!p_ptr) |
1098 | return -EINVAL; | |
1099 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
4cec72c8 | 1100 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1101 | return TIPC_OK; |
1102 | } | |
1103 | ||
1104 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
1105 | { | |
1106 | struct port *p_ptr; | |
1107 | ||
1108 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1109 | return -EINVAL; | |
1110 | ||
4323add6 | 1111 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1112 | if (!p_ptr) |
1113 | return -EINVAL; | |
1114 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
4cec72c8 | 1115 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1116 | return TIPC_OK; |
1117 | } | |
1118 | ||
1119 | ||
1120 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1121 | { | |
1122 | struct port *p_ptr; | |
1123 | struct publication *publ; | |
1124 | u32 key; | |
1125 | int res = -EINVAL; | |
1126 | ||
4323add6 | 1127 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
1128 | if (!p_ptr) |
1129 | return -EINVAL; | |
1130 | ||
b97bf3fd PL |
1131 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1132 | "lower = %u, upper = %u\n", | |
1133 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
b97bf3fd PL |
1134 | if (p_ptr->publ.connected) |
1135 | goto exit; | |
1136 | if (seq->lower > seq->upper) | |
1137 | goto exit; | |
1138 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1139 | goto exit; | |
1140 | key = ref + p_ptr->pub_count + 1; | |
1141 | if (key == ref) { | |
1142 | res = -EADDRINUSE; | |
1143 | goto exit; | |
1144 | } | |
4323add6 PL |
1145 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1146 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1147 | if (publ) { |
1148 | list_add(&publ->pport_list, &p_ptr->publications); | |
1149 | p_ptr->pub_count++; | |
1150 | p_ptr->publ.published = 1; | |
1151 | res = TIPC_OK; | |
1152 | } | |
1153 | exit: | |
4323add6 | 1154 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1155 | return res; |
1156 | } | |
1157 | ||
1158 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1159 | { | |
1160 | struct port *p_ptr; | |
1161 | struct publication *publ; | |
1162 | struct publication *tpubl; | |
1163 | int res = -EINVAL; | |
c4307285 | 1164 | |
4323add6 | 1165 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1166 | if (!p_ptr) |
1167 | return -EINVAL; | |
b97bf3fd | 1168 | if (!seq) { |
c4307285 | 1169 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1170 | &p_ptr->publications, pport_list) { |
c4307285 | 1171 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1172 | publ->ref, publ->key); |
b97bf3fd PL |
1173 | } |
1174 | res = TIPC_OK; | |
1175 | } else { | |
c4307285 | 1176 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1177 | &p_ptr->publications, pport_list) { |
1178 | if (publ->scope != scope) | |
1179 | continue; | |
1180 | if (publ->type != seq->type) | |
1181 | continue; | |
1182 | if (publ->lower != seq->lower) | |
1183 | continue; | |
1184 | if (publ->upper != seq->upper) | |
1185 | break; | |
c4307285 | 1186 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1187 | publ->ref, publ->key); |
b97bf3fd PL |
1188 | res = TIPC_OK; |
1189 | break; | |
1190 | } | |
1191 | } | |
1192 | if (list_empty(&p_ptr->publications)) | |
1193 | p_ptr->publ.published = 0; | |
4323add6 | 1194 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1195 | return res; |
1196 | } | |
1197 | ||
1198 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1199 | { | |
1200 | struct port *p_ptr; | |
1201 | struct tipc_msg *msg; | |
1202 | int res = -EINVAL; | |
1203 | ||
4323add6 | 1204 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1205 | if (!p_ptr) |
1206 | return -EINVAL; | |
1207 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1208 | goto exit; | |
1209 | if (!peer->ref) | |
1210 | goto exit; | |
1211 | ||
1212 | msg = &p_ptr->publ.phdr; | |
1213 | msg_set_destnode(msg, peer->node); | |
1214 | msg_set_destport(msg, peer->ref); | |
1215 | msg_set_orignode(msg, tipc_own_addr); | |
1216 | msg_set_origport(msg, p_ptr->publ.ref); | |
1217 | msg_set_transp_seqno(msg, 42); | |
1218 | msg_set_type(msg, TIPC_CONN_MSG); | |
1219 | if (!may_route(peer->node)) | |
1220 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1221 | else | |
1222 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1223 | ||
1224 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1225 | p_ptr->probing_state = CONFIRMED; | |
1226 | p_ptr->publ.connected = 1; | |
1227 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1228 | ||
4323add6 | 1229 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1230 | (void *)(unsigned long)ref, |
b97bf3fd PL |
1231 | (net_ev_handler)port_handle_node_down); |
1232 | res = TIPC_OK; | |
1233 | exit: | |
4323add6 | 1234 | tipc_port_unlock(p_ptr); |
05646c91 | 1235 | p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1236 | return res; |
1237 | } | |
1238 | ||
0c3141e9 AS |
1239 | /** |
1240 | * tipc_disconnect_port - disconnect port from peer | |
1241 | * | |
1242 | * Port must be locked. | |
1243 | */ | |
1244 | ||
1245 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1246 | { | |
1247 | int res; | |
1248 | ||
1249 | if (tp_ptr->connected) { | |
1250 | tp_ptr->connected = 0; | |
1251 | /* let timer expire on it's own to avoid deadlock! */ | |
1252 | tipc_nodesub_unsubscribe( | |
1253 | &((struct port *)tp_ptr)->subscription); | |
1254 | res = TIPC_OK; | |
1255 | } else { | |
1256 | res = -ENOTCONN; | |
1257 | } | |
1258 | return res; | |
1259 | } | |
1260 | ||
b97bf3fd PL |
1261 | /* |
1262 | * tipc_disconnect(): Disconnect port form peer. | |
1263 | * This is a node local operation. | |
1264 | */ | |
1265 | ||
1266 | int tipc_disconnect(u32 ref) | |
1267 | { | |
1268 | struct port *p_ptr; | |
0c3141e9 | 1269 | int res; |
b97bf3fd | 1270 | |
4323add6 | 1271 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1272 | if (!p_ptr) |
1273 | return -EINVAL; | |
0c3141e9 | 1274 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1275 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1276 | return res; |
1277 | } | |
1278 | ||
1279 | /* | |
1280 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1281 | */ | |
1282 | int tipc_shutdown(u32 ref) | |
1283 | { | |
1284 | struct port *p_ptr; | |
1fc54d8f | 1285 | struct sk_buff *buf = NULL; |
b97bf3fd | 1286 | |
4323add6 | 1287 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1288 | if (!p_ptr) |
1289 | return -EINVAL; | |
1290 | ||
1291 | if (p_ptr->publ.connected) { | |
1292 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1293 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1294 | imp++; | |
1295 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1296 | port_peernode(p_ptr), | |
1297 | ref, | |
1298 | tipc_own_addr, | |
1299 | imp, | |
1300 | TIPC_CONN_MSG, | |
c4307285 | 1301 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1302 | port_out_seqno(p_ptr), |
1303 | 0); | |
1304 | } | |
4323add6 PL |
1305 | tipc_port_unlock(p_ptr); |
1306 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1307 | return tipc_disconnect(ref); |
1308 | } | |
1309 | ||
1310 | int tipc_isconnected(u32 ref, int *isconnected) | |
1311 | { | |
1312 | struct port *p_ptr; | |
c4307285 | 1313 | |
4323add6 | 1314 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1315 | if (!p_ptr) |
1316 | return -EINVAL; | |
1317 | *isconnected = p_ptr->publ.connected; | |
4323add6 | 1318 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1319 | return TIPC_OK; |
1320 | } | |
1321 | ||
1322 | int tipc_peer(u32 ref, struct tipc_portid *peer) | |
1323 | { | |
1324 | struct port *p_ptr; | |
1325 | int res; | |
c4307285 | 1326 | |
4323add6 | 1327 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1328 | if (!p_ptr) |
1329 | return -EINVAL; | |
1330 | if (p_ptr->publ.connected) { | |
1331 | peer->ref = port_peerport(p_ptr); | |
1332 | peer->node = port_peernode(p_ptr); | |
1333 | res = TIPC_OK; | |
1334 | } else | |
1335 | res = -ENOTCONN; | |
4323add6 | 1336 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1337 | return res; |
1338 | } | |
1339 | ||
1340 | int tipc_ref_valid(u32 ref) | |
1341 | { | |
1342 | /* Works irrespective of type */ | |
4323add6 | 1343 | return !!tipc_ref_deref(ref); |
b97bf3fd PL |
1344 | } |
1345 | ||
1346 | ||
1347 | /* | |
4323add6 | 1348 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1349 | * message for this node. |
1350 | */ | |
1351 | ||
4323add6 | 1352 | int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
b97bf3fd PL |
1353 | struct iovec const *msg_sect) |
1354 | { | |
1355 | struct sk_buff *buf; | |
1356 | int res; | |
c4307285 | 1357 | |
b97bf3fd PL |
1358 | res = msg_build(&sender->publ.phdr, msg_sect, num_sect, |
1359 | MAX_MSG_SIZE, !sender->user_port, &buf); | |
1360 | if (likely(buf)) | |
4323add6 | 1361 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1362 | return res; |
1363 | } | |
1364 | ||
1365 | /** | |
1366 | * tipc_send - send message sections on connection | |
1367 | */ | |
1368 | ||
1369 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1370 | { | |
1371 | struct port *p_ptr; | |
1372 | u32 destnode; | |
1373 | int res; | |
1374 | ||
4323add6 | 1375 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1376 | if (!p_ptr || !p_ptr->publ.connected) |
1377 | return -EINVAL; | |
1378 | ||
1379 | p_ptr->publ.congested = 1; | |
4323add6 | 1380 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1381 | destnode = port_peernode(p_ptr); |
1382 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1383 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1384 | destnode); | |
b97bf3fd | 1385 | else |
4323add6 | 1386 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1387 | |
1388 | if (likely(res != -ELINKCONG)) { | |
1389 | port_incr_out_seqno(p_ptr); | |
1390 | p_ptr->publ.congested = 0; | |
1391 | p_ptr->sent++; | |
1392 | return res; | |
1393 | } | |
1394 | } | |
1395 | if (port_unreliable(p_ptr)) { | |
1396 | p_ptr->publ.congested = 0; | |
1397 | /* Just calculate msg length and return */ | |
1398 | return msg_calc_data_size(msg_sect, num_sect); | |
1399 | } | |
1400 | return -ELINKCONG; | |
1401 | } | |
1402 | ||
c4307285 | 1403 | /** |
b97bf3fd PL |
1404 | * tipc_send_buf - send message buffer on connection |
1405 | */ | |
1406 | ||
1407 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) | |
1408 | { | |
1409 | struct port *p_ptr; | |
1410 | struct tipc_msg *msg; | |
1411 | u32 destnode; | |
1412 | u32 hsz; | |
1413 | u32 sz; | |
1414 | u32 res; | |
c4307285 | 1415 | |
4323add6 | 1416 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1417 | if (!p_ptr || !p_ptr->publ.connected) |
1418 | return -EINVAL; | |
1419 | ||
1420 | msg = &p_ptr->publ.phdr; | |
1421 | hsz = msg_hdr_sz(msg); | |
1422 | sz = hsz + dsz; | |
1423 | msg_set_size(msg, sz); | |
1424 | if (skb_cow(buf, hsz)) | |
1425 | return -ENOMEM; | |
1426 | ||
1427 | skb_push(buf, hsz); | |
27d7ff46 | 1428 | skb_copy_to_linear_data(buf, msg, hsz); |
b97bf3fd PL |
1429 | destnode = msg_destnode(msg); |
1430 | p_ptr->publ.congested = 1; | |
4323add6 | 1431 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1432 | if (likely(destnode != tipc_own_addr)) |
1433 | res = tipc_send_buf_fast(buf, destnode); | |
1434 | else { | |
4323add6 | 1435 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1436 | res = sz; |
1437 | } | |
1438 | if (likely(res != -ELINKCONG)) { | |
1439 | port_incr_out_seqno(p_ptr); | |
1440 | p_ptr->sent++; | |
1441 | p_ptr->publ.congested = 0; | |
1442 | return res; | |
1443 | } | |
1444 | } | |
1445 | if (port_unreliable(p_ptr)) { | |
1446 | p_ptr->publ.congested = 0; | |
1447 | return dsz; | |
1448 | } | |
1449 | return -ELINKCONG; | |
1450 | } | |
1451 | ||
1452 | /** | |
1453 | * tipc_forward2name - forward message sections to port name | |
1454 | */ | |
1455 | ||
c4307285 YH |
1456 | int tipc_forward2name(u32 ref, |
1457 | struct tipc_name const *name, | |
b97bf3fd | 1458 | u32 domain, |
c4307285 | 1459 | u32 num_sect, |
b97bf3fd | 1460 | struct iovec const *msg_sect, |
c4307285 | 1461 | struct tipc_portid const *orig, |
b97bf3fd PL |
1462 | unsigned int importance) |
1463 | { | |
1464 | struct port *p_ptr; | |
1465 | struct tipc_msg *msg; | |
1466 | u32 destnode = domain; | |
1467 | u32 destport = 0; | |
1468 | int res; | |
1469 | ||
4323add6 | 1470 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1471 | if (!p_ptr || p_ptr->publ.connected) |
1472 | return -EINVAL; | |
1473 | ||
1474 | msg = &p_ptr->publ.phdr; | |
1475 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1476 | msg_set_orignode(msg, orig->node); | |
1477 | msg_set_origport(msg, orig->ref); | |
1478 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1479 | msg_set_nametype(msg, name->type); | |
1480 | msg_set_nameinst(msg, name->instance); | |
1481 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1482 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1483 | msg_set_importance(msg,importance); | |
4323add6 | 1484 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1485 | msg_set_destnode(msg, destnode); |
1486 | msg_set_destport(msg, destport); | |
1487 | ||
1488 | if (likely(destport || destnode)) { | |
1489 | p_ptr->sent++; | |
1490 | if (likely(destnode == tipc_own_addr)) | |
4323add6 | 1491 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
c4307285 | 1492 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
4323add6 | 1493 | destnode); |
b97bf3fd PL |
1494 | if (likely(res != -ELINKCONG)) |
1495 | return res; | |
1496 | if (port_unreliable(p_ptr)) { | |
1497 | /* Just calculate msg length and return */ | |
1498 | return msg_calc_data_size(msg_sect, num_sect); | |
1499 | } | |
1500 | return -ELINKCONG; | |
1501 | } | |
c4307285 | 1502 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1503 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1504 | } |
1505 | ||
1506 | /** | |
1507 | * tipc_send2name - send message sections to port name | |
1508 | */ | |
1509 | ||
c4307285 | 1510 | int tipc_send2name(u32 ref, |
b97bf3fd | 1511 | struct tipc_name const *name, |
c4307285 YH |
1512 | unsigned int domain, |
1513 | unsigned int num_sect, | |
b97bf3fd PL |
1514 | struct iovec const *msg_sect) |
1515 | { | |
1516 | struct tipc_portid orig; | |
1517 | ||
1518 | orig.ref = ref; | |
1519 | orig.node = tipc_own_addr; | |
1520 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | |
1521 | TIPC_PORT_IMPORTANCE); | |
1522 | } | |
1523 | ||
c4307285 | 1524 | /** |
b97bf3fd PL |
1525 | * tipc_forward_buf2name - forward message buffer to port name |
1526 | */ | |
1527 | ||
1528 | int tipc_forward_buf2name(u32 ref, | |
1529 | struct tipc_name const *name, | |
1530 | u32 domain, | |
1531 | struct sk_buff *buf, | |
1532 | unsigned int dsz, | |
1533 | struct tipc_portid const *orig, | |
1534 | unsigned int importance) | |
1535 | { | |
1536 | struct port *p_ptr; | |
1537 | struct tipc_msg *msg; | |
1538 | u32 destnode = domain; | |
1539 | u32 destport = 0; | |
1540 | int res; | |
1541 | ||
4323add6 | 1542 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1543 | if (!p_ptr || p_ptr->publ.connected) |
1544 | return -EINVAL; | |
1545 | ||
1546 | msg = &p_ptr->publ.phdr; | |
1547 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1548 | msg_set_importance(msg, importance); | |
1549 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1550 | msg_set_orignode(msg, orig->node); | |
1551 | msg_set_origport(msg, orig->ref); | |
1552 | msg_set_nametype(msg, name->type); | |
1553 | msg_set_nameinst(msg, name->instance); | |
1554 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1555 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1556 | msg_set_size(msg, LONG_H_SIZE + dsz); | |
4323add6 | 1557 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1558 | msg_set_destnode(msg, destnode); |
1559 | msg_set_destport(msg, destport); | |
1560 | msg_dbg(msg, "forw2name ==> "); | |
1561 | if (skb_cow(buf, LONG_H_SIZE)) | |
1562 | return -ENOMEM; | |
1563 | skb_push(buf, LONG_H_SIZE); | |
27d7ff46 | 1564 | skb_copy_to_linear_data(buf, msg, LONG_H_SIZE); |
b97bf3fd PL |
1565 | msg_dbg(buf_msg(buf),"PREP:"); |
1566 | if (likely(destport || destnode)) { | |
1567 | p_ptr->sent++; | |
1568 | if (destnode == tipc_own_addr) | |
4323add6 | 1569 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1570 | res = tipc_send_buf_fast(buf, destnode); |
1571 | if (likely(res != -ELINKCONG)) | |
1572 | return res; | |
1573 | if (port_unreliable(p_ptr)) | |
1574 | return dsz; | |
1575 | return -ELINKCONG; | |
1576 | } | |
1577 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); | |
1578 | } | |
1579 | ||
c4307285 | 1580 | /** |
b97bf3fd PL |
1581 | * tipc_send_buf2name - send message buffer to port name |
1582 | */ | |
1583 | ||
c4307285 YH |
1584 | int tipc_send_buf2name(u32 ref, |
1585 | struct tipc_name const *dest, | |
b97bf3fd | 1586 | u32 domain, |
c4307285 | 1587 | struct sk_buff *buf, |
b97bf3fd PL |
1588 | unsigned int dsz) |
1589 | { | |
1590 | struct tipc_portid orig; | |
1591 | ||
1592 | orig.ref = ref; | |
1593 | orig.node = tipc_own_addr; | |
1594 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, | |
1595 | TIPC_PORT_IMPORTANCE); | |
1596 | } | |
1597 | ||
c4307285 | 1598 | /** |
b97bf3fd PL |
1599 | * tipc_forward2port - forward message sections to port identity |
1600 | */ | |
1601 | ||
1602 | int tipc_forward2port(u32 ref, | |
1603 | struct tipc_portid const *dest, | |
c4307285 | 1604 | unsigned int num_sect, |
b97bf3fd | 1605 | struct iovec const *msg_sect, |
c4307285 | 1606 | struct tipc_portid const *orig, |
b97bf3fd PL |
1607 | unsigned int importance) |
1608 | { | |
1609 | struct port *p_ptr; | |
1610 | struct tipc_msg *msg; | |
1611 | int res; | |
1612 | ||
4323add6 | 1613 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1614 | if (!p_ptr || p_ptr->publ.connected) |
1615 | return -EINVAL; | |
1616 | ||
1617 | msg = &p_ptr->publ.phdr; | |
1618 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1619 | msg_set_orignode(msg, orig->node); | |
1620 | msg_set_origport(msg, orig->ref); | |
1621 | msg_set_destnode(msg, dest->node); | |
1622 | msg_set_destport(msg, dest->ref); | |
1623 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1624 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1625 | msg_set_importance(msg, importance); | |
1626 | p_ptr->sent++; | |
1627 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1628 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1629 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1630 | if (likely(res != -ELINKCONG)) |
1631 | return res; | |
1632 | if (port_unreliable(p_ptr)) { | |
1633 | /* Just calculate msg length and return */ | |
1634 | return msg_calc_data_size(msg_sect, num_sect); | |
1635 | } | |
1636 | return -ELINKCONG; | |
1637 | } | |
1638 | ||
c4307285 YH |
1639 | /** |
1640 | * tipc_send2port - send message sections to port identity | |
b97bf3fd PL |
1641 | */ |
1642 | ||
c4307285 | 1643 | int tipc_send2port(u32 ref, |
b97bf3fd | 1644 | struct tipc_portid const *dest, |
c4307285 | 1645 | unsigned int num_sect, |
b97bf3fd PL |
1646 | struct iovec const *msg_sect) |
1647 | { | |
1648 | struct tipc_portid orig; | |
1649 | ||
1650 | orig.ref = ref; | |
1651 | orig.node = tipc_own_addr; | |
c4307285 | 1652 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, |
b97bf3fd PL |
1653 | TIPC_PORT_IMPORTANCE); |
1654 | } | |
1655 | ||
c4307285 | 1656 | /** |
b97bf3fd PL |
1657 | * tipc_forward_buf2port - forward message buffer to port identity |
1658 | */ | |
1659 | int tipc_forward_buf2port(u32 ref, | |
1660 | struct tipc_portid const *dest, | |
1661 | struct sk_buff *buf, | |
1662 | unsigned int dsz, | |
1663 | struct tipc_portid const *orig, | |
1664 | unsigned int importance) | |
1665 | { | |
1666 | struct port *p_ptr; | |
1667 | struct tipc_msg *msg; | |
1668 | int res; | |
1669 | ||
4323add6 | 1670 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1671 | if (!p_ptr || p_ptr->publ.connected) |
1672 | return -EINVAL; | |
1673 | ||
1674 | msg = &p_ptr->publ.phdr; | |
1675 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1676 | msg_set_orignode(msg, orig->node); | |
1677 | msg_set_origport(msg, orig->ref); | |
1678 | msg_set_destnode(msg, dest->node); | |
1679 | msg_set_destport(msg, dest->ref); | |
1680 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1681 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1682 | msg_set_importance(msg, importance); | |
1683 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | |
1684 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1685 | return -ENOMEM; | |
1686 | ||
1687 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1688 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
b97bf3fd PL |
1689 | msg_dbg(msg, "buf2port: "); |
1690 | p_ptr->sent++; | |
1691 | if (dest->node == tipc_own_addr) | |
4323add6 | 1692 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1693 | res = tipc_send_buf_fast(buf, dest->node); |
1694 | if (likely(res != -ELINKCONG)) | |
1695 | return res; | |
1696 | if (port_unreliable(p_ptr)) | |
1697 | return dsz; | |
1698 | return -ELINKCONG; | |
1699 | } | |
1700 | ||
c4307285 | 1701 | /** |
b97bf3fd PL |
1702 | * tipc_send_buf2port - send message buffer to port identity |
1703 | */ | |
1704 | ||
c4307285 | 1705 | int tipc_send_buf2port(u32 ref, |
b97bf3fd | 1706 | struct tipc_portid const *dest, |
c4307285 | 1707 | struct sk_buff *buf, |
b97bf3fd PL |
1708 | unsigned int dsz) |
1709 | { | |
1710 | struct tipc_portid orig; | |
1711 | ||
1712 | orig.ref = ref; | |
1713 | orig.node = tipc_own_addr; | |
c4307285 | 1714 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, |
b97bf3fd PL |
1715 | TIPC_PORT_IMPORTANCE); |
1716 | } | |
1717 |