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 | /** | |
214 | * tipc_createport_raw - create a native TIPC port | |
c4307285 | 215 | * |
b97bf3fd PL |
216 | * Returns local port reference |
217 | */ | |
218 | ||
219 | u32 tipc_createport_raw(void *usr_handle, | |
220 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), | |
221 | void (*wakeup)(struct tipc_port *), | |
222 | const u32 importance) | |
223 | { | |
224 | struct port *p_ptr; | |
225 | struct tipc_msg *msg; | |
226 | u32 ref; | |
227 | ||
0da974f4 | 228 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 AS |
229 | if (!p_ptr) { |
230 | warn("Port creation failed, no memory\n"); | |
b97bf3fd PL |
231 | return 0; |
232 | } | |
4323add6 | 233 | ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock); |
b97bf3fd | 234 | if (!ref) { |
a10bd924 | 235 | warn("Port creation failed, reference table exhausted\n"); |
b97bf3fd PL |
236 | kfree(p_ptr); |
237 | return 0; | |
238 | } | |
239 | ||
4323add6 | 240 | tipc_port_lock(ref); |
05646c91 AS |
241 | p_ptr->publ.usr_handle = usr_handle; |
242 | p_ptr->publ.max_pkt = MAX_PKT_DEFAULT; | |
b97bf3fd PL |
243 | p_ptr->publ.ref = ref; |
244 | msg = &p_ptr->publ.phdr; | |
245 | msg_init(msg, DATA_LOW, TIPC_NAMED_MSG, TIPC_OK, LONG_H_SIZE, 0); | |
246 | msg_set_orignode(msg, tipc_own_addr); | |
247 | msg_set_prevnode(msg, tipc_own_addr); | |
248 | msg_set_origport(msg, ref); | |
249 | msg_set_importance(msg,importance); | |
250 | p_ptr->last_in_seqno = 41; | |
251 | p_ptr->sent = 1; | |
b97bf3fd PL |
252 | INIT_LIST_HEAD(&p_ptr->wait_list); |
253 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
1fc54d8f | 254 | p_ptr->congested_link = NULL; |
b97bf3fd PL |
255 | p_ptr->dispatcher = dispatcher; |
256 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 257 | p_ptr->user_port = NULL; |
b97bf3fd | 258 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 259 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
260 | INIT_LIST_HEAD(&p_ptr->publications); |
261 | INIT_LIST_HEAD(&p_ptr->port_list); | |
262 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 PL |
263 | spin_unlock_bh(&tipc_port_list_lock); |
264 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
265 | return ref; |
266 | } | |
267 | ||
268 | int tipc_deleteport(u32 ref) | |
269 | { | |
270 | struct port *p_ptr; | |
1fc54d8f | 271 | struct sk_buff *buf = NULL; |
b97bf3fd | 272 | |
1fc54d8f | 273 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 274 | p_ptr = tipc_port_lock(ref); |
c4307285 | 275 | if (!p_ptr) |
b97bf3fd PL |
276 | return -EINVAL; |
277 | ||
4323add6 PL |
278 | tipc_ref_discard(ref); |
279 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
280 | |
281 | k_cancel_timer(&p_ptr->timer); | |
282 | if (p_ptr->publ.connected) { | |
283 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
4323add6 | 284 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
285 | } |
286 | if (p_ptr->user_port) { | |
4323add6 | 287 | tipc_reg_remove_port(p_ptr->user_port); |
b97bf3fd PL |
288 | kfree(p_ptr->user_port); |
289 | } | |
290 | ||
4323add6 | 291 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
292 | list_del(&p_ptr->port_list); |
293 | list_del(&p_ptr->wait_list); | |
4323add6 | 294 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
295 | k_term_timer(&p_ptr->timer); |
296 | kfree(p_ptr); | |
297 | dbg("Deleted port %u\n", ref); | |
4323add6 | 298 | tipc_net_route_msg(buf); |
b97bf3fd PL |
299 | return TIPC_OK; |
300 | } | |
301 | ||
302 | /** | |
303 | * tipc_get_port() - return port associated with 'ref' | |
c4307285 | 304 | * |
b97bf3fd PL |
305 | * Note: Port is not locked. |
306 | */ | |
307 | ||
308 | struct tipc_port *tipc_get_port(const u32 ref) | |
309 | { | |
4323add6 | 310 | return (struct tipc_port *)tipc_ref_deref(ref); |
b97bf3fd PL |
311 | } |
312 | ||
313 | /** | |
314 | * tipc_get_handle - return user handle associated to port 'ref' | |
315 | */ | |
316 | ||
317 | void *tipc_get_handle(const u32 ref) | |
318 | { | |
319 | struct port *p_ptr; | |
320 | void * handle; | |
321 | ||
4323add6 | 322 | p_ptr = tipc_port_lock(ref); |
b97bf3fd | 323 | if (!p_ptr) |
1fc54d8f | 324 | return NULL; |
b97bf3fd | 325 | handle = p_ptr->publ.usr_handle; |
4323add6 | 326 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
327 | return handle; |
328 | } | |
329 | ||
05790c64 | 330 | static int port_unreliable(struct port *p_ptr) |
b97bf3fd PL |
331 | { |
332 | return msg_src_droppable(&p_ptr->publ.phdr); | |
333 | } | |
334 | ||
335 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
336 | { | |
337 | struct port *p_ptr; | |
c4307285 | 338 | |
4323add6 | 339 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
340 | if (!p_ptr) |
341 | return -EINVAL; | |
342 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 343 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
344 | return TIPC_OK; |
345 | } | |
346 | ||
347 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
348 | { | |
349 | struct port *p_ptr; | |
c4307285 | 350 | |
4323add6 | 351 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
352 | if (!p_ptr) |
353 | return -EINVAL; | |
354 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | |
4323add6 | 355 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
356 | return TIPC_OK; |
357 | } | |
358 | ||
05790c64 | 359 | static int port_unreturnable(struct port *p_ptr) |
b97bf3fd PL |
360 | { |
361 | return msg_dest_droppable(&p_ptr->publ.phdr); | |
362 | } | |
363 | ||
364 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
365 | { | |
366 | struct port *p_ptr; | |
c4307285 | 367 | |
4323add6 | 368 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
369 | if (!p_ptr) |
370 | return -EINVAL; | |
371 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 372 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
373 | return TIPC_OK; |
374 | } | |
375 | ||
376 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
377 | { | |
378 | struct port *p_ptr; | |
c4307285 | 379 | |
4323add6 | 380 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
381 | if (!p_ptr) |
382 | return -EINVAL; | |
383 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | |
4323add6 | 384 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
385 | return TIPC_OK; |
386 | } | |
387 | ||
c4307285 YH |
388 | /* |
389 | * port_build_proto_msg(): build a port level protocol | |
390 | * or a connection abortion message. Called with | |
b97bf3fd PL |
391 | * tipc_port lock on. |
392 | */ | |
393 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
394 | u32 origport, u32 orignode, | |
c4307285 | 395 | u32 usr, u32 type, u32 err, |
b97bf3fd PL |
396 | u32 seqno, u32 ack) |
397 | { | |
398 | struct sk_buff *buf; | |
399 | struct tipc_msg *msg; | |
c4307285 | 400 | |
b97bf3fd PL |
401 | buf = buf_acquire(LONG_H_SIZE); |
402 | if (buf) { | |
403 | msg = buf_msg(buf); | |
404 | msg_init(msg, usr, type, err, LONG_H_SIZE, destnode); | |
405 | msg_set_destport(msg, destport); | |
406 | msg_set_origport(msg, origport); | |
407 | msg_set_destnode(msg, destnode); | |
408 | msg_set_orignode(msg, orignode); | |
409 | msg_set_transp_seqno(msg, seqno); | |
410 | msg_set_msgcnt(msg, ack); | |
411 | msg_dbg(msg, "PORT>SEND>:"); | |
412 | } | |
413 | return buf; | |
414 | } | |
415 | ||
b97bf3fd PL |
416 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
417 | { | |
418 | struct tipc_msg *msg = buf_msg(buf); | |
419 | struct sk_buff *rbuf; | |
420 | struct tipc_msg *rmsg; | |
421 | int hdr_sz; | |
422 | u32 imp = msg_importance(msg); | |
423 | u32 data_sz = msg_data_sz(msg); | |
424 | ||
425 | if (data_sz > MAX_REJECT_SIZE) | |
426 | data_sz = MAX_REJECT_SIZE; | |
427 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
428 | imp++; | |
429 | msg_dbg(msg, "port->rej: "); | |
430 | ||
431 | /* discard rejected message if it shouldn't be returned to sender */ | |
432 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
433 | buf_discard(buf); | |
434 | return data_sz; | |
435 | } | |
436 | ||
437 | /* construct rejected message */ | |
438 | if (msg_mcast(msg)) | |
439 | hdr_sz = MCAST_H_SIZE; | |
440 | else | |
441 | hdr_sz = LONG_H_SIZE; | |
442 | rbuf = buf_acquire(data_sz + hdr_sz); | |
443 | if (rbuf == NULL) { | |
444 | buf_discard(buf); | |
445 | return data_sz; | |
446 | } | |
447 | rmsg = buf_msg(rbuf); | |
448 | msg_init(rmsg, imp, msg_type(msg), err, hdr_sz, msg_orignode(msg)); | |
449 | msg_set_destport(rmsg, msg_origport(msg)); | |
450 | msg_set_prevnode(rmsg, tipc_own_addr); | |
451 | msg_set_origport(rmsg, msg_destport(msg)); | |
452 | if (msg_short(msg)) | |
453 | msg_set_orignode(rmsg, tipc_own_addr); | |
454 | else | |
455 | msg_set_orignode(rmsg, msg_destnode(msg)); | |
c4307285 | 456 | msg_set_size(rmsg, data_sz + hdr_sz); |
b97bf3fd PL |
457 | msg_set_nametype(rmsg, msg_nametype(msg)); |
458 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
27d7ff46 | 459 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
460 | |
461 | /* send self-abort message when rejecting on a connected port */ | |
462 | if (msg_connected(msg)) { | |
1fc54d8f | 463 | struct sk_buff *abuf = NULL; |
4323add6 | 464 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
465 | |
466 | if (p_ptr) { | |
467 | if (p_ptr->publ.connected) | |
468 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 469 | tipc_port_unlock(p_ptr); |
b97bf3fd | 470 | } |
4323add6 | 471 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
472 | } |
473 | ||
474 | /* send rejected message */ | |
475 | buf_discard(buf); | |
4323add6 | 476 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
477 | return data_sz; |
478 | } | |
479 | ||
4323add6 PL |
480 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
481 | struct iovec const *msg_sect, u32 num_sect, | |
482 | int err) | |
b97bf3fd PL |
483 | { |
484 | struct sk_buff *buf; | |
485 | int res; | |
486 | ||
c4307285 | 487 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
488 | !p_ptr->user_port, &buf); |
489 | if (!buf) | |
490 | return res; | |
491 | ||
492 | return tipc_reject_msg(buf, err); | |
493 | } | |
494 | ||
495 | static void port_timeout(unsigned long ref) | |
496 | { | |
4323add6 | 497 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 498 | struct sk_buff *buf = NULL; |
b97bf3fd | 499 | |
065fd177 AS |
500 | if (!p_ptr) |
501 | return; | |
502 | ||
503 | if (!p_ptr->publ.connected) { | |
504 | tipc_port_unlock(p_ptr); | |
b97bf3fd | 505 | return; |
065fd177 | 506 | } |
b97bf3fd PL |
507 | |
508 | /* Last probe answered ? */ | |
509 | if (p_ptr->probing_state == PROBING) { | |
510 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
511 | } else { | |
512 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
513 | port_peernode(p_ptr), | |
514 | p_ptr->publ.ref, | |
515 | tipc_own_addr, | |
516 | CONN_MANAGER, | |
517 | CONN_PROBE, | |
c4307285 | 518 | TIPC_OK, |
b97bf3fd PL |
519 | port_out_seqno(p_ptr), |
520 | 0); | |
521 | port_incr_out_seqno(p_ptr); | |
522 | p_ptr->probing_state = PROBING; | |
523 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
524 | } | |
4323add6 PL |
525 | tipc_port_unlock(p_ptr); |
526 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
527 | } |
528 | ||
529 | ||
530 | static void port_handle_node_down(unsigned long ref) | |
531 | { | |
4323add6 | 532 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 533 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
534 | |
535 | if (!p_ptr) | |
536 | return; | |
537 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
538 | tipc_port_unlock(p_ptr); |
539 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
540 | } |
541 | ||
542 | ||
543 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
544 | { | |
545 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
546 | ||
547 | if (!p_ptr->publ.connected) | |
1fc54d8f | 548 | return NULL; |
b97bf3fd PL |
549 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
550 | imp++; | |
551 | return port_build_proto_msg(p_ptr->publ.ref, | |
552 | tipc_own_addr, | |
553 | port_peerport(p_ptr), | |
554 | port_peernode(p_ptr), | |
555 | imp, | |
556 | TIPC_CONN_MSG, | |
c4307285 | 557 | err, |
b97bf3fd PL |
558 | p_ptr->last_in_seqno + 1, |
559 | 0); | |
560 | } | |
561 | ||
562 | ||
563 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
564 | { | |
565 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
566 | ||
567 | if (!p_ptr->publ.connected) | |
1fc54d8f | 568 | return NULL; |
b97bf3fd PL |
569 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
570 | imp++; | |
571 | return port_build_proto_msg(port_peerport(p_ptr), | |
572 | port_peernode(p_ptr), | |
573 | p_ptr->publ.ref, | |
574 | tipc_own_addr, | |
575 | imp, | |
576 | TIPC_CONN_MSG, | |
c4307285 | 577 | err, |
b97bf3fd PL |
578 | port_out_seqno(p_ptr), |
579 | 0); | |
580 | } | |
581 | ||
4323add6 | 582 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
583 | { |
584 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 585 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 586 | u32 err = TIPC_OK; |
1fc54d8f SR |
587 | struct sk_buff *r_buf = NULL; |
588 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd PL |
589 | |
590 | msg_dbg(msg, "PORT<RECV<:"); | |
591 | ||
592 | if (!p_ptr) { | |
593 | err = TIPC_ERR_NO_PORT; | |
594 | } else if (p_ptr->publ.connected) { | |
595 | if (port_peernode(p_ptr) != msg_orignode(msg)) | |
596 | err = TIPC_ERR_NO_PORT; | |
597 | if (port_peerport(p_ptr) != msg_origport(msg)) | |
598 | err = TIPC_ERR_NO_PORT; | |
599 | if (!err && msg_routed(msg)) { | |
600 | u32 seqno = msg_transp_seqno(msg); | |
601 | u32 myno = ++p_ptr->last_in_seqno; | |
602 | if (seqno != myno) { | |
603 | err = TIPC_ERR_NO_PORT; | |
604 | abort_buf = port_build_self_abort_msg(p_ptr, err); | |
605 | } | |
606 | } | |
607 | if (msg_type(msg) == CONN_ACK) { | |
c4307285 | 608 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
609 | p_ptr->publ.congested && |
610 | p_ptr->wakeup; | |
611 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 612 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
613 | goto exit; |
614 | p_ptr->publ.congested = 0; | |
615 | if (!wakeup) | |
616 | goto exit; | |
617 | p_ptr->wakeup(&p_ptr->publ); | |
618 | goto exit; | |
619 | } | |
620 | } else if (p_ptr->publ.published) { | |
621 | err = TIPC_ERR_NO_PORT; | |
622 | } | |
623 | if (err) { | |
624 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
625 | msg_orignode(msg), |
626 | msg_destport(msg), | |
b97bf3fd PL |
627 | tipc_own_addr, |
628 | DATA_HIGH, | |
629 | TIPC_CONN_MSG, | |
630 | err, | |
631 | 0, | |
632 | 0); | |
633 | goto exit; | |
634 | } | |
635 | ||
636 | /* All is fine */ | |
637 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
638 | r_buf = port_build_proto_msg(msg_origport(msg), |
639 | msg_orignode(msg), | |
640 | msg_destport(msg), | |
641 | tipc_own_addr, | |
b97bf3fd PL |
642 | CONN_MANAGER, |
643 | CONN_PROBE_REPLY, | |
644 | TIPC_OK, | |
645 | port_out_seqno(p_ptr), | |
646 | 0); | |
647 | } | |
648 | p_ptr->probing_state = CONFIRMED; | |
649 | port_incr_out_seqno(p_ptr); | |
650 | exit: | |
651 | if (p_ptr) | |
4323add6 PL |
652 | tipc_port_unlock(p_ptr); |
653 | tipc_net_route_msg(r_buf); | |
654 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
655 | buf_discard(buf); |
656 | } | |
657 | ||
658 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
659 | { | |
c4307285 | 660 | struct publication *publ; |
b97bf3fd PL |
661 | |
662 | if (full_id) | |
c4307285 | 663 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 664 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
c4307285 | 665 | tipc_node(tipc_own_addr), p_ptr->publ.ref); |
b97bf3fd PL |
666 | else |
667 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
668 | ||
c4307285 YH |
669 | if (p_ptr->publ.connected) { |
670 | u32 dport = port_peerport(p_ptr); | |
671 | u32 destnode = port_peernode(p_ptr); | |
672 | ||
673 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
674 | tipc_zone(destnode), tipc_cluster(destnode), | |
675 | tipc_node(destnode), dport); | |
676 | if (p_ptr->publ.conn_type != 0) | |
677 | tipc_printf(buf, " via {%u,%u}", | |
678 | p_ptr->publ.conn_type, | |
679 | p_ptr->publ.conn_instance); | |
680 | } | |
681 | else if (p_ptr->publ.published) { | |
682 | tipc_printf(buf, " bound to"); | |
683 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
684 | if (publ->lower == publ->upper) |
685 | tipc_printf(buf, " {%u,%u}", publ->type, | |
686 | publ->lower); | |
687 | else | |
c4307285 | 688 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 689 | publ->lower, publ->upper); |
c4307285 YH |
690 | } |
691 | } | |
692 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
693 | } |
694 | ||
695 | #define MAX_PORT_QUERY 32768 | |
696 | ||
4323add6 | 697 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
698 | { |
699 | struct sk_buff *buf; | |
700 | struct tlv_desc *rep_tlv; | |
701 | struct print_buf pb; | |
702 | struct port *p_ptr; | |
703 | int str_len; | |
704 | ||
4323add6 | 705 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
706 | if (!buf) |
707 | return NULL; | |
708 | rep_tlv = (struct tlv_desc *)buf->data; | |
709 | ||
4323add6 PL |
710 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
711 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
712 | list_for_each_entry(p_ptr, &ports, port_list) { |
713 | spin_lock_bh(p_ptr->publ.lock); | |
714 | port_print(p_ptr, &pb, 0); | |
715 | spin_unlock_bh(p_ptr->publ.lock); | |
716 | } | |
4323add6 PL |
717 | spin_unlock_bh(&tipc_port_list_lock); |
718 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
719 | |
720 | skb_put(buf, TLV_SPACE(str_len)); | |
721 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
722 | ||
723 | return buf; | |
724 | } | |
725 | ||
726 | #if 0 | |
727 | ||
728 | #define MAX_PORT_STATS 2000 | |
729 | ||
730 | struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) | |
731 | { | |
732 | u32 ref; | |
733 | struct port *p_ptr; | |
734 | struct sk_buff *buf; | |
735 | struct tlv_desc *rep_tlv; | |
736 | struct print_buf pb; | |
737 | int str_len; | |
738 | ||
739 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) | |
740 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
741 | ||
742 | ref = *(u32 *)TLV_DATA(req_tlv_area); | |
743 | ref = ntohl(ref); | |
744 | ||
4323add6 | 745 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
746 | if (!p_ptr) |
747 | return cfg_reply_error_string("port not found"); | |
748 | ||
4323add6 | 749 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); |
b97bf3fd | 750 | if (!buf) { |
4323add6 | 751 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
752 | return NULL; |
753 | } | |
754 | rep_tlv = (struct tlv_desc *)buf->data; | |
755 | ||
4323add6 | 756 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); |
b97bf3fd PL |
757 | port_print(p_ptr, &pb, 1); |
758 | /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ | |
4323add6 PL |
759 | tipc_port_unlock(p_ptr); |
760 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
761 | |
762 | skb_put(buf, TLV_SPACE(str_len)); | |
763 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
764 | ||
765 | return buf; | |
766 | } | |
767 | ||
768 | #endif | |
769 | ||
4323add6 | 770 | void tipc_port_reinit(void) |
b97bf3fd PL |
771 | { |
772 | struct port *p_ptr; | |
773 | struct tipc_msg *msg; | |
774 | ||
4323add6 | 775 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
776 | list_for_each_entry(p_ptr, &ports, port_list) { |
777 | msg = &p_ptr->publ.phdr; | |
778 | if (msg_orignode(msg) == tipc_own_addr) | |
779 | break; | |
780 | msg_set_orignode(msg, tipc_own_addr); | |
781 | } | |
4323add6 | 782 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
783 | } |
784 | ||
785 | ||
786 | /* | |
787 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
788 | * to the tipc_port interface. | |
789 | */ | |
790 | ||
791 | static void port_dispatcher_sigh(void *dummy) | |
792 | { | |
793 | struct sk_buff *buf; | |
794 | ||
795 | spin_lock_bh(&queue_lock); | |
796 | buf = msg_queue_head; | |
1fc54d8f | 797 | msg_queue_head = NULL; |
b97bf3fd PL |
798 | spin_unlock_bh(&queue_lock); |
799 | ||
800 | while (buf) { | |
801 | struct port *p_ptr; | |
802 | struct user_port *up_ptr; | |
803 | struct tipc_portid orig; | |
804 | struct tipc_name_seq dseq; | |
805 | void *usr_handle; | |
806 | int connected; | |
807 | int published; | |
9688243b | 808 | u32 message_type; |
b97bf3fd PL |
809 | |
810 | struct sk_buff *next = buf->next; | |
811 | struct tipc_msg *msg = buf_msg(buf); | |
812 | u32 dref = msg_destport(msg); | |
c4307285 | 813 | |
9688243b AS |
814 | message_type = msg_type(msg); |
815 | if (message_type > TIPC_DIRECT_MSG) | |
816 | goto reject; /* Unsupported message type */ | |
817 | ||
4323add6 | 818 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
819 | if (!p_ptr) |
820 | goto reject; /* Port deleted while msg in queue */ | |
821 | ||
b97bf3fd PL |
822 | orig.ref = msg_origport(msg); |
823 | orig.node = msg_orignode(msg); | |
824 | up_ptr = p_ptr->user_port; | |
825 | usr_handle = up_ptr->usr_handle; | |
826 | connected = p_ptr->publ.connected; | |
827 | published = p_ptr->publ.published; | |
828 | ||
829 | if (unlikely(msg_errcode(msg))) | |
830 | goto err; | |
831 | ||
9688243b | 832 | switch (message_type) { |
c4307285 | 833 | |
b97bf3fd PL |
834 | case TIPC_CONN_MSG:{ |
835 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
836 | u32 peer_port = port_peerport(p_ptr); | |
837 | u32 peer_node = port_peernode(p_ptr); | |
838 | ||
4cec72c8 | 839 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
840 | if (unlikely(!connected)) { |
841 | if (unlikely(published)) | |
842 | goto reject; | |
843 | tipc_connect2port(dref,&orig); | |
844 | } | |
845 | if (unlikely(msg_origport(msg) != peer_port)) | |
846 | goto reject; | |
847 | if (unlikely(msg_orignode(msg) != peer_node)) | |
848 | goto reject; | |
849 | if (unlikely(!cb)) | |
850 | goto reject; | |
c4307285 | 851 | if (unlikely(++p_ptr->publ.conn_unacked >= |
b97bf3fd | 852 | TIPC_FLOW_CONTROL_WIN)) |
c4307285 | 853 | tipc_acknowledge(dref, |
b97bf3fd PL |
854 | p_ptr->publ.conn_unacked); |
855 | skb_pull(buf, msg_hdr_sz(msg)); | |
856 | cb(usr_handle, dref, &buf, msg_data(msg), | |
857 | msg_data_sz(msg)); | |
858 | break; | |
859 | } | |
860 | case TIPC_DIRECT_MSG:{ | |
861 | tipc_msg_event cb = up_ptr->msg_cb; | |
862 | ||
4cec72c8 | 863 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
864 | if (unlikely(connected)) |
865 | goto reject; | |
866 | if (unlikely(!cb)) | |
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); |
b97bf3fd PL |
879 | if (unlikely(connected)) |
880 | goto reject; | |
881 | if (unlikely(!cb)) | |
882 | goto reject; | |
883 | if (unlikely(!published)) | |
884 | goto reject; | |
885 | dseq.type = msg_nametype(msg); | |
886 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
887 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
888 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 889 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 890 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
891 | msg_data_sz(msg), msg_importance(msg), |
892 | &orig, &dseq); | |
893 | break; | |
894 | } | |
895 | } | |
896 | if (buf) | |
897 | buf_discard(buf); | |
898 | buf = next; | |
899 | continue; | |
900 | err: | |
9688243b | 901 | switch (message_type) { |
c4307285 | 902 | |
b97bf3fd | 903 | case TIPC_CONN_MSG:{ |
c4307285 | 904 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
905 | up_ptr->conn_err_cb; |
906 | u32 peer_port = port_peerport(p_ptr); | |
907 | u32 peer_node = port_peernode(p_ptr); | |
908 | ||
4cec72c8 | 909 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
910 | if (!connected || !cb) |
911 | break; | |
912 | if (msg_origport(msg) != peer_port) | |
913 | break; | |
914 | if (msg_orignode(msg) != peer_node) | |
915 | break; | |
916 | tipc_disconnect(dref); | |
917 | skb_pull(buf, msg_hdr_sz(msg)); | |
918 | cb(usr_handle, dref, &buf, msg_data(msg), | |
919 | msg_data_sz(msg), msg_errcode(msg)); | |
920 | break; | |
921 | } | |
922 | case TIPC_DIRECT_MSG:{ | |
923 | tipc_msg_err_event cb = up_ptr->err_cb; | |
924 | ||
4cec72c8 | 925 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
926 | if (connected || !cb) |
927 | break; | |
928 | skb_pull(buf, msg_hdr_sz(msg)); | |
929 | cb(usr_handle, dref, &buf, msg_data(msg), | |
930 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
931 | break; | |
932 | } | |
9688243b | 933 | case TIPC_MCAST_MSG: |
b97bf3fd | 934 | case TIPC_NAMED_MSG:{ |
c4307285 | 935 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
936 | up_ptr->named_err_cb; |
937 | ||
4cec72c8 | 938 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
939 | if (connected || !cb) |
940 | break; | |
941 | dseq.type = msg_nametype(msg); | |
942 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
943 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
944 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 945 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 946 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
947 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
948 | break; | |
949 | } | |
950 | } | |
951 | if (buf) | |
952 | buf_discard(buf); | |
953 | buf = next; | |
954 | continue; | |
955 | reject: | |
956 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
957 | buf = next; | |
958 | } | |
959 | } | |
960 | ||
961 | /* | |
962 | * port_dispatcher(): Dispatcher for messages destinated | |
963 | * to the tipc_port interface. Called with port locked. | |
964 | */ | |
965 | ||
966 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
967 | { | |
968 | buf->next = NULL; | |
969 | spin_lock_bh(&queue_lock); | |
970 | if (msg_queue_head) { | |
971 | msg_queue_tail->next = buf; | |
972 | msg_queue_tail = buf; | |
973 | } else { | |
974 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 975 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
976 | } |
977 | spin_unlock_bh(&queue_lock); | |
978 | return TIPC_OK; | |
979 | } | |
980 | ||
c4307285 | 981 | /* |
b97bf3fd | 982 | * Wake up port after congestion: Called with port locked, |
c4307285 | 983 | * |
b97bf3fd PL |
984 | */ |
985 | ||
986 | static void port_wakeup_sh(unsigned long ref) | |
987 | { | |
988 | struct port *p_ptr; | |
989 | struct user_port *up_ptr; | |
1fc54d8f SR |
990 | tipc_continue_event cb = NULL; |
991 | void *uh = NULL; | |
b97bf3fd | 992 | |
4323add6 | 993 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
994 | if (p_ptr) { |
995 | up_ptr = p_ptr->user_port; | |
996 | if (up_ptr) { | |
997 | cb = up_ptr->continue_event_cb; | |
998 | uh = up_ptr->usr_handle; | |
999 | } | |
4323add6 | 1000 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1001 | } |
1002 | if (cb) | |
1003 | cb(uh, ref); | |
1004 | } | |
1005 | ||
1006 | ||
1007 | static void port_wakeup(struct tipc_port *p_ptr) | |
1008 | { | |
4323add6 | 1009 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
1010 | } |
1011 | ||
1012 | void tipc_acknowledge(u32 ref, u32 ack) | |
1013 | { | |
1014 | struct port *p_ptr; | |
1fc54d8f | 1015 | struct sk_buff *buf = NULL; |
b97bf3fd | 1016 | |
4323add6 | 1017 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1018 | if (!p_ptr) |
1019 | return; | |
1020 | if (p_ptr->publ.connected) { | |
1021 | p_ptr->publ.conn_unacked -= ack; | |
1022 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1023 | port_peernode(p_ptr), | |
1024 | ref, | |
1025 | tipc_own_addr, | |
1026 | CONN_MANAGER, | |
1027 | CONN_ACK, | |
c4307285 | 1028 | TIPC_OK, |
b97bf3fd PL |
1029 | port_out_seqno(p_ptr), |
1030 | ack); | |
1031 | } | |
4323add6 PL |
1032 | tipc_port_unlock(p_ptr); |
1033 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1034 | } |
1035 | ||
1036 | /* | |
1037 | * tipc_createport(): user level call. Will add port to | |
1038 | * registry if non-zero user_ref. | |
1039 | */ | |
1040 | ||
c4307285 YH |
1041 | int tipc_createport(u32 user_ref, |
1042 | void *usr_handle, | |
1043 | unsigned int importance, | |
1044 | tipc_msg_err_event error_cb, | |
1045 | tipc_named_msg_err_event named_error_cb, | |
1046 | tipc_conn_shutdown_event conn_error_cb, | |
1047 | tipc_msg_event msg_cb, | |
1048 | tipc_named_msg_event named_msg_cb, | |
1049 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
1050 | tipc_continue_event continue_event_cb,/* May be zero */ |
1051 | u32 *portref) | |
1052 | { | |
1053 | struct user_port *up_ptr; | |
c4307285 | 1054 | struct port *p_ptr; |
b97bf3fd PL |
1055 | u32 ref; |
1056 | ||
0da974f4 | 1057 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 1058 | if (!up_ptr) { |
a75bf874 | 1059 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
1060 | return -ENOMEM; |
1061 | } | |
1fc54d8f | 1062 | ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, importance); |
4323add6 | 1063 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1064 | if (!p_ptr) { |
1065 | kfree(up_ptr); | |
1066 | return -ENOMEM; | |
1067 | } | |
1068 | ||
1069 | p_ptr->user_port = up_ptr; | |
1070 | up_ptr->user_ref = user_ref; | |
1071 | up_ptr->usr_handle = usr_handle; | |
1072 | up_ptr->ref = p_ptr->publ.ref; | |
1073 | up_ptr->err_cb = error_cb; | |
1074 | up_ptr->named_err_cb = named_error_cb; | |
1075 | up_ptr->conn_err_cb = conn_error_cb; | |
1076 | up_ptr->msg_cb = msg_cb; | |
1077 | up_ptr->named_msg_cb = named_msg_cb; | |
1078 | up_ptr->conn_msg_cb = conn_msg_cb; | |
1079 | up_ptr->continue_event_cb = continue_event_cb; | |
1080 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 1081 | tipc_reg_add_port(up_ptr); |
b97bf3fd | 1082 | *portref = p_ptr->publ.ref; |
c4307285 | 1083 | dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref); |
4323add6 | 1084 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1085 | return TIPC_OK; |
1086 | } | |
1087 | ||
1088 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) | |
1089 | { | |
1090 | id->ref = ref; | |
1091 | id->node = tipc_own_addr; | |
1092 | return TIPC_OK; | |
1093 | } | |
1094 | ||
1095 | int tipc_portimportance(u32 ref, unsigned int *importance) | |
1096 | { | |
1097 | struct port *p_ptr; | |
c4307285 | 1098 | |
4323add6 | 1099 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1100 | if (!p_ptr) |
1101 | return -EINVAL; | |
1102 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
4cec72c8 | 1103 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1104 | return TIPC_OK; |
1105 | } | |
1106 | ||
1107 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
1108 | { | |
1109 | struct port *p_ptr; | |
1110 | ||
1111 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1112 | return -EINVAL; | |
1113 | ||
4323add6 | 1114 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1115 | if (!p_ptr) |
1116 | return -EINVAL; | |
1117 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
4cec72c8 | 1118 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1119 | return TIPC_OK; |
1120 | } | |
1121 | ||
1122 | ||
1123 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1124 | { | |
1125 | struct port *p_ptr; | |
1126 | struct publication *publ; | |
1127 | u32 key; | |
1128 | int res = -EINVAL; | |
1129 | ||
4323add6 | 1130 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
1131 | if (!p_ptr) |
1132 | return -EINVAL; | |
1133 | ||
b97bf3fd PL |
1134 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1135 | "lower = %u, upper = %u\n", | |
1136 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
b97bf3fd PL |
1137 | if (p_ptr->publ.connected) |
1138 | goto exit; | |
1139 | if (seq->lower > seq->upper) | |
1140 | goto exit; | |
1141 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1142 | goto exit; | |
1143 | key = ref + p_ptr->pub_count + 1; | |
1144 | if (key == ref) { | |
1145 | res = -EADDRINUSE; | |
1146 | goto exit; | |
1147 | } | |
4323add6 PL |
1148 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1149 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1150 | if (publ) { |
1151 | list_add(&publ->pport_list, &p_ptr->publications); | |
1152 | p_ptr->pub_count++; | |
1153 | p_ptr->publ.published = 1; | |
1154 | res = TIPC_OK; | |
1155 | } | |
1156 | exit: | |
4323add6 | 1157 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1158 | return res; |
1159 | } | |
1160 | ||
1161 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1162 | { | |
1163 | struct port *p_ptr; | |
1164 | struct publication *publ; | |
1165 | struct publication *tpubl; | |
1166 | int res = -EINVAL; | |
c4307285 | 1167 | |
4323add6 | 1168 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1169 | if (!p_ptr) |
1170 | return -EINVAL; | |
b97bf3fd | 1171 | if (!seq) { |
c4307285 | 1172 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1173 | &p_ptr->publications, pport_list) { |
c4307285 | 1174 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1175 | publ->ref, publ->key); |
b97bf3fd PL |
1176 | } |
1177 | res = TIPC_OK; | |
1178 | } else { | |
c4307285 | 1179 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1180 | &p_ptr->publications, pport_list) { |
1181 | if (publ->scope != scope) | |
1182 | continue; | |
1183 | if (publ->type != seq->type) | |
1184 | continue; | |
1185 | if (publ->lower != seq->lower) | |
1186 | continue; | |
1187 | if (publ->upper != seq->upper) | |
1188 | break; | |
c4307285 | 1189 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1190 | publ->ref, publ->key); |
b97bf3fd PL |
1191 | res = TIPC_OK; |
1192 | break; | |
1193 | } | |
1194 | } | |
1195 | if (list_empty(&p_ptr->publications)) | |
1196 | p_ptr->publ.published = 0; | |
4323add6 | 1197 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1198 | return res; |
1199 | } | |
1200 | ||
1201 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1202 | { | |
1203 | struct port *p_ptr; | |
1204 | struct tipc_msg *msg; | |
1205 | int res = -EINVAL; | |
1206 | ||
4323add6 | 1207 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1208 | if (!p_ptr) |
1209 | return -EINVAL; | |
1210 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1211 | goto exit; | |
1212 | if (!peer->ref) | |
1213 | goto exit; | |
1214 | ||
1215 | msg = &p_ptr->publ.phdr; | |
1216 | msg_set_destnode(msg, peer->node); | |
1217 | msg_set_destport(msg, peer->ref); | |
1218 | msg_set_orignode(msg, tipc_own_addr); | |
1219 | msg_set_origport(msg, p_ptr->publ.ref); | |
1220 | msg_set_transp_seqno(msg, 42); | |
1221 | msg_set_type(msg, TIPC_CONN_MSG); | |
1222 | if (!may_route(peer->node)) | |
1223 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1224 | else | |
1225 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1226 | ||
1227 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1228 | p_ptr->probing_state = CONFIRMED; | |
1229 | p_ptr->publ.connected = 1; | |
1230 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1231 | ||
4323add6 | 1232 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1233 | (void *)(unsigned long)ref, |
b97bf3fd PL |
1234 | (net_ev_handler)port_handle_node_down); |
1235 | res = TIPC_OK; | |
1236 | exit: | |
4323add6 | 1237 | tipc_port_unlock(p_ptr); |
05646c91 | 1238 | p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1239 | return res; |
1240 | } | |
1241 | ||
1242 | /* | |
1243 | * tipc_disconnect(): Disconnect port form peer. | |
1244 | * This is a node local operation. | |
1245 | */ | |
1246 | ||
1247 | int tipc_disconnect(u32 ref) | |
1248 | { | |
1249 | struct port *p_ptr; | |
1250 | int res = -ENOTCONN; | |
1251 | ||
4323add6 | 1252 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1253 | if (!p_ptr) |
1254 | return -EINVAL; | |
1255 | if (p_ptr->publ.connected) { | |
1256 | p_ptr->publ.connected = 0; | |
1257 | /* let timer expire on it's own to avoid deadlock! */ | |
4323add6 | 1258 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
1259 | res = TIPC_OK; |
1260 | } | |
4323add6 | 1261 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1262 | return res; |
1263 | } | |
1264 | ||
1265 | /* | |
1266 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1267 | */ | |
1268 | int tipc_shutdown(u32 ref) | |
1269 | { | |
1270 | struct port *p_ptr; | |
1fc54d8f | 1271 | struct sk_buff *buf = NULL; |
b97bf3fd | 1272 | |
4323add6 | 1273 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1274 | if (!p_ptr) |
1275 | return -EINVAL; | |
1276 | ||
1277 | if (p_ptr->publ.connected) { | |
1278 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1279 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1280 | imp++; | |
1281 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1282 | port_peernode(p_ptr), | |
1283 | ref, | |
1284 | tipc_own_addr, | |
1285 | imp, | |
1286 | TIPC_CONN_MSG, | |
c4307285 | 1287 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1288 | port_out_seqno(p_ptr), |
1289 | 0); | |
1290 | } | |
4323add6 PL |
1291 | tipc_port_unlock(p_ptr); |
1292 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1293 | return tipc_disconnect(ref); |
1294 | } | |
1295 | ||
1296 | int tipc_isconnected(u32 ref, int *isconnected) | |
1297 | { | |
1298 | struct port *p_ptr; | |
c4307285 | 1299 | |
4323add6 | 1300 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1301 | if (!p_ptr) |
1302 | return -EINVAL; | |
1303 | *isconnected = p_ptr->publ.connected; | |
4323add6 | 1304 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1305 | return TIPC_OK; |
1306 | } | |
1307 | ||
1308 | int tipc_peer(u32 ref, struct tipc_portid *peer) | |
1309 | { | |
1310 | struct port *p_ptr; | |
1311 | int res; | |
c4307285 | 1312 | |
4323add6 | 1313 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1314 | if (!p_ptr) |
1315 | return -EINVAL; | |
1316 | if (p_ptr->publ.connected) { | |
1317 | peer->ref = port_peerport(p_ptr); | |
1318 | peer->node = port_peernode(p_ptr); | |
1319 | res = TIPC_OK; | |
1320 | } else | |
1321 | res = -ENOTCONN; | |
4323add6 | 1322 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1323 | return res; |
1324 | } | |
1325 | ||
1326 | int tipc_ref_valid(u32 ref) | |
1327 | { | |
1328 | /* Works irrespective of type */ | |
4323add6 | 1329 | return !!tipc_ref_deref(ref); |
b97bf3fd PL |
1330 | } |
1331 | ||
1332 | ||
1333 | /* | |
4323add6 | 1334 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1335 | * message for this node. |
1336 | */ | |
1337 | ||
4323add6 | 1338 | int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
b97bf3fd PL |
1339 | struct iovec const *msg_sect) |
1340 | { | |
1341 | struct sk_buff *buf; | |
1342 | int res; | |
c4307285 | 1343 | |
b97bf3fd PL |
1344 | res = msg_build(&sender->publ.phdr, msg_sect, num_sect, |
1345 | MAX_MSG_SIZE, !sender->user_port, &buf); | |
1346 | if (likely(buf)) | |
4323add6 | 1347 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1348 | return res; |
1349 | } | |
1350 | ||
1351 | /** | |
1352 | * tipc_send - send message sections on connection | |
1353 | */ | |
1354 | ||
1355 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1356 | { | |
1357 | struct port *p_ptr; | |
1358 | u32 destnode; | |
1359 | int res; | |
1360 | ||
4323add6 | 1361 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1362 | if (!p_ptr || !p_ptr->publ.connected) |
1363 | return -EINVAL; | |
1364 | ||
1365 | p_ptr->publ.congested = 1; | |
4323add6 | 1366 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1367 | destnode = port_peernode(p_ptr); |
1368 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1369 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1370 | destnode); | |
b97bf3fd | 1371 | else |
4323add6 | 1372 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1373 | |
1374 | if (likely(res != -ELINKCONG)) { | |
1375 | port_incr_out_seqno(p_ptr); | |
1376 | p_ptr->publ.congested = 0; | |
1377 | p_ptr->sent++; | |
1378 | return res; | |
1379 | } | |
1380 | } | |
1381 | if (port_unreliable(p_ptr)) { | |
1382 | p_ptr->publ.congested = 0; | |
1383 | /* Just calculate msg length and return */ | |
1384 | return msg_calc_data_size(msg_sect, num_sect); | |
1385 | } | |
1386 | return -ELINKCONG; | |
1387 | } | |
1388 | ||
c4307285 | 1389 | /** |
b97bf3fd PL |
1390 | * tipc_send_buf - send message buffer on connection |
1391 | */ | |
1392 | ||
1393 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) | |
1394 | { | |
1395 | struct port *p_ptr; | |
1396 | struct tipc_msg *msg; | |
1397 | u32 destnode; | |
1398 | u32 hsz; | |
1399 | u32 sz; | |
1400 | u32 res; | |
c4307285 | 1401 | |
4323add6 | 1402 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1403 | if (!p_ptr || !p_ptr->publ.connected) |
1404 | return -EINVAL; | |
1405 | ||
1406 | msg = &p_ptr->publ.phdr; | |
1407 | hsz = msg_hdr_sz(msg); | |
1408 | sz = hsz + dsz; | |
1409 | msg_set_size(msg, sz); | |
1410 | if (skb_cow(buf, hsz)) | |
1411 | return -ENOMEM; | |
1412 | ||
1413 | skb_push(buf, hsz); | |
27d7ff46 | 1414 | skb_copy_to_linear_data(buf, msg, hsz); |
b97bf3fd PL |
1415 | destnode = msg_destnode(msg); |
1416 | p_ptr->publ.congested = 1; | |
4323add6 | 1417 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1418 | if (likely(destnode != tipc_own_addr)) |
1419 | res = tipc_send_buf_fast(buf, destnode); | |
1420 | else { | |
4323add6 | 1421 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1422 | res = sz; |
1423 | } | |
1424 | if (likely(res != -ELINKCONG)) { | |
1425 | port_incr_out_seqno(p_ptr); | |
1426 | p_ptr->sent++; | |
1427 | p_ptr->publ.congested = 0; | |
1428 | return res; | |
1429 | } | |
1430 | } | |
1431 | if (port_unreliable(p_ptr)) { | |
1432 | p_ptr->publ.congested = 0; | |
1433 | return dsz; | |
1434 | } | |
1435 | return -ELINKCONG; | |
1436 | } | |
1437 | ||
1438 | /** | |
1439 | * tipc_forward2name - forward message sections to port name | |
1440 | */ | |
1441 | ||
c4307285 YH |
1442 | int tipc_forward2name(u32 ref, |
1443 | struct tipc_name const *name, | |
b97bf3fd | 1444 | u32 domain, |
c4307285 | 1445 | u32 num_sect, |
b97bf3fd | 1446 | struct iovec const *msg_sect, |
c4307285 | 1447 | struct tipc_portid const *orig, |
b97bf3fd PL |
1448 | unsigned int importance) |
1449 | { | |
1450 | struct port *p_ptr; | |
1451 | struct tipc_msg *msg; | |
1452 | u32 destnode = domain; | |
1453 | u32 destport = 0; | |
1454 | int res; | |
1455 | ||
4323add6 | 1456 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1457 | if (!p_ptr || p_ptr->publ.connected) |
1458 | return -EINVAL; | |
1459 | ||
1460 | msg = &p_ptr->publ.phdr; | |
1461 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1462 | msg_set_orignode(msg, orig->node); | |
1463 | msg_set_origport(msg, orig->ref); | |
1464 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1465 | msg_set_nametype(msg, name->type); | |
1466 | msg_set_nameinst(msg, name->instance); | |
1467 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1468 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1469 | msg_set_importance(msg,importance); | |
4323add6 | 1470 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1471 | msg_set_destnode(msg, destnode); |
1472 | msg_set_destport(msg, destport); | |
1473 | ||
1474 | if (likely(destport || destnode)) { | |
1475 | p_ptr->sent++; | |
1476 | if (likely(destnode == tipc_own_addr)) | |
4323add6 | 1477 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
c4307285 | 1478 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
4323add6 | 1479 | destnode); |
b97bf3fd PL |
1480 | if (likely(res != -ELINKCONG)) |
1481 | return res; | |
1482 | if (port_unreliable(p_ptr)) { | |
1483 | /* Just calculate msg length and return */ | |
1484 | return msg_calc_data_size(msg_sect, num_sect); | |
1485 | } | |
1486 | return -ELINKCONG; | |
1487 | } | |
c4307285 | 1488 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1489 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1490 | } |
1491 | ||
1492 | /** | |
1493 | * tipc_send2name - send message sections to port name | |
1494 | */ | |
1495 | ||
c4307285 | 1496 | int tipc_send2name(u32 ref, |
b97bf3fd | 1497 | struct tipc_name const *name, |
c4307285 YH |
1498 | unsigned int domain, |
1499 | unsigned int num_sect, | |
b97bf3fd PL |
1500 | struct iovec const *msg_sect) |
1501 | { | |
1502 | struct tipc_portid orig; | |
1503 | ||
1504 | orig.ref = ref; | |
1505 | orig.node = tipc_own_addr; | |
1506 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | |
1507 | TIPC_PORT_IMPORTANCE); | |
1508 | } | |
1509 | ||
c4307285 | 1510 | /** |
b97bf3fd PL |
1511 | * tipc_forward_buf2name - forward message buffer to port name |
1512 | */ | |
1513 | ||
1514 | int tipc_forward_buf2name(u32 ref, | |
1515 | struct tipc_name const *name, | |
1516 | u32 domain, | |
1517 | struct sk_buff *buf, | |
1518 | unsigned int dsz, | |
1519 | struct tipc_portid const *orig, | |
1520 | unsigned int importance) | |
1521 | { | |
1522 | struct port *p_ptr; | |
1523 | struct tipc_msg *msg; | |
1524 | u32 destnode = domain; | |
1525 | u32 destport = 0; | |
1526 | int res; | |
1527 | ||
4323add6 | 1528 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1529 | if (!p_ptr || p_ptr->publ.connected) |
1530 | return -EINVAL; | |
1531 | ||
1532 | msg = &p_ptr->publ.phdr; | |
1533 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1534 | msg_set_importance(msg, importance); | |
1535 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1536 | msg_set_orignode(msg, orig->node); | |
1537 | msg_set_origport(msg, orig->ref); | |
1538 | msg_set_nametype(msg, name->type); | |
1539 | msg_set_nameinst(msg, name->instance); | |
1540 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1541 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1542 | msg_set_size(msg, LONG_H_SIZE + dsz); | |
4323add6 | 1543 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1544 | msg_set_destnode(msg, destnode); |
1545 | msg_set_destport(msg, destport); | |
1546 | msg_dbg(msg, "forw2name ==> "); | |
1547 | if (skb_cow(buf, LONG_H_SIZE)) | |
1548 | return -ENOMEM; | |
1549 | skb_push(buf, LONG_H_SIZE); | |
27d7ff46 | 1550 | skb_copy_to_linear_data(buf, msg, LONG_H_SIZE); |
b97bf3fd PL |
1551 | msg_dbg(buf_msg(buf),"PREP:"); |
1552 | if (likely(destport || destnode)) { | |
1553 | p_ptr->sent++; | |
1554 | if (destnode == tipc_own_addr) | |
4323add6 | 1555 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1556 | res = tipc_send_buf_fast(buf, destnode); |
1557 | if (likely(res != -ELINKCONG)) | |
1558 | return res; | |
1559 | if (port_unreliable(p_ptr)) | |
1560 | return dsz; | |
1561 | return -ELINKCONG; | |
1562 | } | |
1563 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); | |
1564 | } | |
1565 | ||
c4307285 | 1566 | /** |
b97bf3fd PL |
1567 | * tipc_send_buf2name - send message buffer to port name |
1568 | */ | |
1569 | ||
c4307285 YH |
1570 | int tipc_send_buf2name(u32 ref, |
1571 | struct tipc_name const *dest, | |
b97bf3fd | 1572 | u32 domain, |
c4307285 | 1573 | struct sk_buff *buf, |
b97bf3fd PL |
1574 | unsigned int dsz) |
1575 | { | |
1576 | struct tipc_portid orig; | |
1577 | ||
1578 | orig.ref = ref; | |
1579 | orig.node = tipc_own_addr; | |
1580 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, | |
1581 | TIPC_PORT_IMPORTANCE); | |
1582 | } | |
1583 | ||
c4307285 | 1584 | /** |
b97bf3fd PL |
1585 | * tipc_forward2port - forward message sections to port identity |
1586 | */ | |
1587 | ||
1588 | int tipc_forward2port(u32 ref, | |
1589 | struct tipc_portid const *dest, | |
c4307285 | 1590 | unsigned int num_sect, |
b97bf3fd | 1591 | struct iovec const *msg_sect, |
c4307285 | 1592 | struct tipc_portid const *orig, |
b97bf3fd PL |
1593 | unsigned int importance) |
1594 | { | |
1595 | struct port *p_ptr; | |
1596 | struct tipc_msg *msg; | |
1597 | int res; | |
1598 | ||
4323add6 | 1599 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1600 | if (!p_ptr || p_ptr->publ.connected) |
1601 | return -EINVAL; | |
1602 | ||
1603 | msg = &p_ptr->publ.phdr; | |
1604 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1605 | msg_set_orignode(msg, orig->node); | |
1606 | msg_set_origport(msg, orig->ref); | |
1607 | msg_set_destnode(msg, dest->node); | |
1608 | msg_set_destport(msg, dest->ref); | |
1609 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1610 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1611 | msg_set_importance(msg, importance); | |
1612 | p_ptr->sent++; | |
1613 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1614 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1615 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1616 | if (likely(res != -ELINKCONG)) |
1617 | return res; | |
1618 | if (port_unreliable(p_ptr)) { | |
1619 | /* Just calculate msg length and return */ | |
1620 | return msg_calc_data_size(msg_sect, num_sect); | |
1621 | } | |
1622 | return -ELINKCONG; | |
1623 | } | |
1624 | ||
c4307285 YH |
1625 | /** |
1626 | * tipc_send2port - send message sections to port identity | |
b97bf3fd PL |
1627 | */ |
1628 | ||
c4307285 | 1629 | int tipc_send2port(u32 ref, |
b97bf3fd | 1630 | struct tipc_portid const *dest, |
c4307285 | 1631 | unsigned int num_sect, |
b97bf3fd PL |
1632 | struct iovec const *msg_sect) |
1633 | { | |
1634 | struct tipc_portid orig; | |
1635 | ||
1636 | orig.ref = ref; | |
1637 | orig.node = tipc_own_addr; | |
c4307285 | 1638 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, |
b97bf3fd PL |
1639 | TIPC_PORT_IMPORTANCE); |
1640 | } | |
1641 | ||
c4307285 | 1642 | /** |
b97bf3fd PL |
1643 | * tipc_forward_buf2port - forward message buffer to port identity |
1644 | */ | |
1645 | int tipc_forward_buf2port(u32 ref, | |
1646 | struct tipc_portid const *dest, | |
1647 | struct sk_buff *buf, | |
1648 | unsigned int dsz, | |
1649 | struct tipc_portid const *orig, | |
1650 | unsigned int importance) | |
1651 | { | |
1652 | struct port *p_ptr; | |
1653 | struct tipc_msg *msg; | |
1654 | int res; | |
1655 | ||
4323add6 | 1656 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1657 | if (!p_ptr || p_ptr->publ.connected) |
1658 | return -EINVAL; | |
1659 | ||
1660 | msg = &p_ptr->publ.phdr; | |
1661 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1662 | msg_set_orignode(msg, orig->node); | |
1663 | msg_set_origport(msg, orig->ref); | |
1664 | msg_set_destnode(msg, dest->node); | |
1665 | msg_set_destport(msg, dest->ref); | |
1666 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1667 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1668 | msg_set_importance(msg, importance); | |
1669 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | |
1670 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1671 | return -ENOMEM; | |
1672 | ||
1673 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1674 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
b97bf3fd PL |
1675 | msg_dbg(msg, "buf2port: "); |
1676 | p_ptr->sent++; | |
1677 | if (dest->node == tipc_own_addr) | |
4323add6 | 1678 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1679 | res = tipc_send_buf_fast(buf, dest->node); |
1680 | if (likely(res != -ELINKCONG)) | |
1681 | return res; | |
1682 | if (port_unreliable(p_ptr)) | |
1683 | return dsz; | |
1684 | return -ELINKCONG; | |
1685 | } | |
1686 | ||
c4307285 | 1687 | /** |
b97bf3fd PL |
1688 | * tipc_send_buf2port - send message buffer to port identity |
1689 | */ | |
1690 | ||
c4307285 | 1691 | int tipc_send_buf2port(u32 ref, |
b97bf3fd | 1692 | struct tipc_portid const *dest, |
c4307285 | 1693 | struct sk_buff *buf, |
b97bf3fd PL |
1694 | unsigned int dsz) |
1695 | { | |
1696 | struct tipc_portid orig; | |
1697 | ||
1698 | orig.ref = ref; | |
1699 | orig.node = tipc_own_addr; | |
c4307285 | 1700 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, |
b97bf3fd PL |
1701 | TIPC_PORT_IMPORTANCE); |
1702 | } | |
1703 |