Commit | Line | Data |
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b97bf3fd PL |
1 | /* |
2 | * net/tipc/port.c: TIPC port code | |
c4307285 | 3 | * |
05646c91 | 4 | * Copyright (c) 1992-2007, Ericsson AB |
0ea52241 | 5 | * Copyright (c) 2004-2008, 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 | * |
0ea52241 | 216 | * Returns pointer to (locked) TIPC port, or NULL if unable to create it |
b97bf3fd PL |
217 | */ |
218 | ||
0ea52241 | 219 | struct tipc_port *tipc_createport_raw(void *usr_handle, |
b97bf3fd PL |
220 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), |
221 | void (*wakeup)(struct tipc_port *), | |
0ea52241 | 222 | const u32 importance) |
b97bf3fd PL |
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"); | |
0ea52241 | 231 | return NULL; |
b97bf3fd | 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 | 236 | kfree(p_ptr); |
0ea52241 | 237 | return NULL; |
b97bf3fd PL |
238 | } |
239 | ||
05646c91 AS |
240 | p_ptr->publ.usr_handle = usr_handle; |
241 | p_ptr->publ.max_pkt = MAX_PKT_DEFAULT; | |
b97bf3fd PL |
242 | p_ptr->publ.ref = ref; |
243 | msg = &p_ptr->publ.phdr; | |
9bef5438 | 244 | msg_init(msg, importance, TIPC_NAMED_MSG, LONG_H_SIZE, 0); |
b97bf3fd | 245 | msg_set_origport(msg, ref); |
b97bf3fd PL |
246 | p_ptr->last_in_seqno = 41; |
247 | p_ptr->sent = 1; | |
b97bf3fd PL |
248 | INIT_LIST_HEAD(&p_ptr->wait_list); |
249 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
1fc54d8f | 250 | p_ptr->congested_link = NULL; |
b97bf3fd PL |
251 | p_ptr->dispatcher = dispatcher; |
252 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 253 | p_ptr->user_port = NULL; |
b97bf3fd | 254 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 255 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
256 | INIT_LIST_HEAD(&p_ptr->publications); |
257 | INIT_LIST_HEAD(&p_ptr->port_list); | |
258 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 | 259 | spin_unlock_bh(&tipc_port_list_lock); |
0ea52241 | 260 | return &(p_ptr->publ); |
b97bf3fd PL |
261 | } |
262 | ||
263 | int tipc_deleteport(u32 ref) | |
264 | { | |
265 | struct port *p_ptr; | |
1fc54d8f | 266 | struct sk_buff *buf = NULL; |
b97bf3fd | 267 | |
1fc54d8f | 268 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 269 | p_ptr = tipc_port_lock(ref); |
c4307285 | 270 | if (!p_ptr) |
b97bf3fd PL |
271 | return -EINVAL; |
272 | ||
4323add6 PL |
273 | tipc_ref_discard(ref); |
274 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
275 | |
276 | k_cancel_timer(&p_ptr->timer); | |
277 | if (p_ptr->publ.connected) { | |
278 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
4323add6 | 279 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
280 | } |
281 | if (p_ptr->user_port) { | |
4323add6 | 282 | tipc_reg_remove_port(p_ptr->user_port); |
b97bf3fd PL |
283 | kfree(p_ptr->user_port); |
284 | } | |
285 | ||
4323add6 | 286 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
287 | list_del(&p_ptr->port_list); |
288 | list_del(&p_ptr->wait_list); | |
4323add6 | 289 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
290 | k_term_timer(&p_ptr->timer); |
291 | kfree(p_ptr); | |
292 | dbg("Deleted port %u\n", ref); | |
4323add6 | 293 | tipc_net_route_msg(buf); |
0e35fd5e | 294 | return 0; |
b97bf3fd PL |
295 | } |
296 | ||
297 | /** | |
298 | * tipc_get_port() - return port associated with 'ref' | |
c4307285 | 299 | * |
b97bf3fd PL |
300 | * Note: Port is not locked. |
301 | */ | |
302 | ||
303 | struct tipc_port *tipc_get_port(const u32 ref) | |
304 | { | |
4323add6 | 305 | return (struct tipc_port *)tipc_ref_deref(ref); |
b97bf3fd PL |
306 | } |
307 | ||
308 | /** | |
309 | * tipc_get_handle - return user handle associated to port 'ref' | |
310 | */ | |
311 | ||
312 | void *tipc_get_handle(const u32 ref) | |
313 | { | |
314 | struct port *p_ptr; | |
315 | void * handle; | |
316 | ||
4323add6 | 317 | p_ptr = tipc_port_lock(ref); |
b97bf3fd | 318 | if (!p_ptr) |
1fc54d8f | 319 | return NULL; |
b97bf3fd | 320 | handle = p_ptr->publ.usr_handle; |
4323add6 | 321 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
322 | return handle; |
323 | } | |
324 | ||
05790c64 | 325 | static int port_unreliable(struct port *p_ptr) |
b97bf3fd PL |
326 | { |
327 | return msg_src_droppable(&p_ptr->publ.phdr); | |
328 | } | |
329 | ||
330 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
331 | { | |
332 | struct port *p_ptr; | |
c4307285 | 333 | |
4323add6 | 334 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
335 | if (!p_ptr) |
336 | return -EINVAL; | |
337 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 338 | tipc_port_unlock(p_ptr); |
0e35fd5e | 339 | return 0; |
b97bf3fd PL |
340 | } |
341 | ||
342 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
343 | { | |
344 | struct port *p_ptr; | |
c4307285 | 345 | |
4323add6 | 346 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
347 | if (!p_ptr) |
348 | return -EINVAL; | |
349 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | |
4323add6 | 350 | tipc_port_unlock(p_ptr); |
0e35fd5e | 351 | return 0; |
b97bf3fd PL |
352 | } |
353 | ||
05790c64 | 354 | static int port_unreturnable(struct port *p_ptr) |
b97bf3fd PL |
355 | { |
356 | return msg_dest_droppable(&p_ptr->publ.phdr); | |
357 | } | |
358 | ||
359 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
360 | { | |
361 | struct port *p_ptr; | |
c4307285 | 362 | |
4323add6 | 363 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
364 | if (!p_ptr) |
365 | return -EINVAL; | |
366 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 367 | tipc_port_unlock(p_ptr); |
0e35fd5e | 368 | return 0; |
b97bf3fd PL |
369 | } |
370 | ||
371 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
372 | { | |
373 | struct port *p_ptr; | |
c4307285 | 374 | |
4323add6 | 375 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
376 | if (!p_ptr) |
377 | return -EINVAL; | |
378 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | |
4323add6 | 379 | tipc_port_unlock(p_ptr); |
0e35fd5e | 380 | return 0; |
b97bf3fd PL |
381 | } |
382 | ||
c4307285 YH |
383 | /* |
384 | * port_build_proto_msg(): build a port level protocol | |
385 | * or a connection abortion message. Called with | |
b97bf3fd PL |
386 | * tipc_port lock on. |
387 | */ | |
388 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
389 | u32 origport, u32 orignode, | |
c4307285 | 390 | u32 usr, u32 type, u32 err, |
b97bf3fd PL |
391 | u32 seqno, u32 ack) |
392 | { | |
393 | struct sk_buff *buf; | |
394 | struct tipc_msg *msg; | |
c4307285 | 395 | |
b97bf3fd PL |
396 | buf = buf_acquire(LONG_H_SIZE); |
397 | if (buf) { | |
398 | msg = buf_msg(buf); | |
75715217 AS |
399 | msg_init(msg, usr, type, LONG_H_SIZE, destnode); |
400 | msg_set_errcode(msg, err); | |
b97bf3fd PL |
401 | msg_set_destport(msg, destport); |
402 | msg_set_origport(msg, origport); | |
b97bf3fd PL |
403 | msg_set_orignode(msg, orignode); |
404 | msg_set_transp_seqno(msg, seqno); | |
405 | msg_set_msgcnt(msg, ack); | |
406 | msg_dbg(msg, "PORT>SEND>:"); | |
407 | } | |
408 | return buf; | |
409 | } | |
410 | ||
b97bf3fd PL |
411 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
412 | { | |
413 | struct tipc_msg *msg = buf_msg(buf); | |
414 | struct sk_buff *rbuf; | |
415 | struct tipc_msg *rmsg; | |
416 | int hdr_sz; | |
417 | u32 imp = msg_importance(msg); | |
418 | u32 data_sz = msg_data_sz(msg); | |
419 | ||
420 | if (data_sz > MAX_REJECT_SIZE) | |
421 | data_sz = MAX_REJECT_SIZE; | |
422 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
423 | imp++; | |
424 | msg_dbg(msg, "port->rej: "); | |
425 | ||
426 | /* discard rejected message if it shouldn't be returned to sender */ | |
427 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
428 | buf_discard(buf); | |
429 | return data_sz; | |
430 | } | |
431 | ||
432 | /* construct rejected message */ | |
433 | if (msg_mcast(msg)) | |
434 | hdr_sz = MCAST_H_SIZE; | |
435 | else | |
436 | hdr_sz = LONG_H_SIZE; | |
437 | rbuf = buf_acquire(data_sz + hdr_sz); | |
438 | if (rbuf == NULL) { | |
439 | buf_discard(buf); | |
440 | return data_sz; | |
441 | } | |
442 | rmsg = buf_msg(rbuf); | |
75715217 AS |
443 | msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg)); |
444 | msg_set_errcode(rmsg, err); | |
b97bf3fd | 445 | msg_set_destport(rmsg, msg_origport(msg)); |
b97bf3fd | 446 | msg_set_origport(rmsg, msg_destport(msg)); |
99c14593 | 447 | if (msg_short(msg)) { |
b97bf3fd | 448 | msg_set_orignode(rmsg, tipc_own_addr); |
99c14593 AS |
449 | /* leave name type & instance as zeroes */ |
450 | } else { | |
b97bf3fd | 451 | msg_set_orignode(rmsg, msg_destnode(msg)); |
99c14593 AS |
452 | msg_set_nametype(rmsg, msg_nametype(msg)); |
453 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
454 | } | |
c4307285 | 455 | msg_set_size(rmsg, data_sz + hdr_sz); |
27d7ff46 | 456 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
457 | |
458 | /* send self-abort message when rejecting on a connected port */ | |
459 | if (msg_connected(msg)) { | |
1fc54d8f | 460 | struct sk_buff *abuf = NULL; |
4323add6 | 461 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
462 | |
463 | if (p_ptr) { | |
464 | if (p_ptr->publ.connected) | |
465 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 466 | tipc_port_unlock(p_ptr); |
b97bf3fd | 467 | } |
4323add6 | 468 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
469 | } |
470 | ||
471 | /* send rejected message */ | |
472 | buf_discard(buf); | |
4323add6 | 473 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
474 | return data_sz; |
475 | } | |
476 | ||
4323add6 PL |
477 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
478 | struct iovec const *msg_sect, u32 num_sect, | |
479 | int err) | |
b97bf3fd PL |
480 | { |
481 | struct sk_buff *buf; | |
482 | int res; | |
483 | ||
c4307285 | 484 | res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
485 | !p_ptr->user_port, &buf); |
486 | if (!buf) | |
487 | return res; | |
488 | ||
489 | return tipc_reject_msg(buf, err); | |
490 | } | |
491 | ||
492 | static void port_timeout(unsigned long ref) | |
493 | { | |
4323add6 | 494 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 495 | struct sk_buff *buf = NULL; |
b97bf3fd | 496 | |
065fd177 AS |
497 | if (!p_ptr) |
498 | return; | |
499 | ||
500 | if (!p_ptr->publ.connected) { | |
501 | tipc_port_unlock(p_ptr); | |
b97bf3fd | 502 | return; |
065fd177 | 503 | } |
b97bf3fd PL |
504 | |
505 | /* Last probe answered ? */ | |
506 | if (p_ptr->probing_state == PROBING) { | |
507 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
508 | } else { | |
509 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
510 | port_peernode(p_ptr), | |
511 | p_ptr->publ.ref, | |
512 | tipc_own_addr, | |
513 | CONN_MANAGER, | |
514 | CONN_PROBE, | |
c4307285 | 515 | TIPC_OK, |
b97bf3fd PL |
516 | port_out_seqno(p_ptr), |
517 | 0); | |
518 | port_incr_out_seqno(p_ptr); | |
519 | p_ptr->probing_state = PROBING; | |
520 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
521 | } | |
4323add6 PL |
522 | tipc_port_unlock(p_ptr); |
523 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
524 | } |
525 | ||
526 | ||
527 | static void port_handle_node_down(unsigned long ref) | |
528 | { | |
4323add6 | 529 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 530 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
531 | |
532 | if (!p_ptr) | |
533 | return; | |
534 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
535 | tipc_port_unlock(p_ptr); |
536 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
537 | } |
538 | ||
539 | ||
540 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
541 | { | |
542 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
543 | ||
544 | if (!p_ptr->publ.connected) | |
1fc54d8f | 545 | return NULL; |
b97bf3fd PL |
546 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
547 | imp++; | |
548 | return port_build_proto_msg(p_ptr->publ.ref, | |
549 | tipc_own_addr, | |
550 | port_peerport(p_ptr), | |
551 | port_peernode(p_ptr), | |
552 | imp, | |
553 | TIPC_CONN_MSG, | |
c4307285 | 554 | err, |
b97bf3fd PL |
555 | p_ptr->last_in_seqno + 1, |
556 | 0); | |
557 | } | |
558 | ||
559 | ||
560 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
561 | { | |
562 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
563 | ||
564 | if (!p_ptr->publ.connected) | |
1fc54d8f | 565 | return NULL; |
b97bf3fd PL |
566 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
567 | imp++; | |
568 | return port_build_proto_msg(port_peerport(p_ptr), | |
569 | port_peernode(p_ptr), | |
570 | p_ptr->publ.ref, | |
571 | tipc_own_addr, | |
572 | imp, | |
573 | TIPC_CONN_MSG, | |
c4307285 | 574 | err, |
b97bf3fd PL |
575 | port_out_seqno(p_ptr), |
576 | 0); | |
577 | } | |
578 | ||
4323add6 | 579 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
580 | { |
581 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 582 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 583 | u32 err = TIPC_OK; |
1fc54d8f SR |
584 | struct sk_buff *r_buf = NULL; |
585 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd PL |
586 | |
587 | msg_dbg(msg, "PORT<RECV<:"); | |
588 | ||
589 | if (!p_ptr) { | |
590 | err = TIPC_ERR_NO_PORT; | |
591 | } else if (p_ptr->publ.connected) { | |
592 | if (port_peernode(p_ptr) != msg_orignode(msg)) | |
593 | err = TIPC_ERR_NO_PORT; | |
594 | if (port_peerport(p_ptr) != msg_origport(msg)) | |
595 | err = TIPC_ERR_NO_PORT; | |
596 | if (!err && msg_routed(msg)) { | |
597 | u32 seqno = msg_transp_seqno(msg); | |
598 | u32 myno = ++p_ptr->last_in_seqno; | |
599 | if (seqno != myno) { | |
600 | err = TIPC_ERR_NO_PORT; | |
601 | abort_buf = port_build_self_abort_msg(p_ptr, err); | |
602 | } | |
603 | } | |
604 | if (msg_type(msg) == CONN_ACK) { | |
c4307285 | 605 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
606 | p_ptr->publ.congested && |
607 | p_ptr->wakeup; | |
608 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 609 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
610 | goto exit; |
611 | p_ptr->publ.congested = 0; | |
612 | if (!wakeup) | |
613 | goto exit; | |
614 | p_ptr->wakeup(&p_ptr->publ); | |
615 | goto exit; | |
616 | } | |
617 | } else if (p_ptr->publ.published) { | |
618 | err = TIPC_ERR_NO_PORT; | |
619 | } | |
620 | if (err) { | |
621 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
622 | msg_orignode(msg), |
623 | msg_destport(msg), | |
b97bf3fd | 624 | tipc_own_addr, |
06d82c91 | 625 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
626 | TIPC_CONN_MSG, |
627 | err, | |
628 | 0, | |
629 | 0); | |
630 | goto exit; | |
631 | } | |
632 | ||
633 | /* All is fine */ | |
634 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
635 | r_buf = port_build_proto_msg(msg_origport(msg), |
636 | msg_orignode(msg), | |
637 | msg_destport(msg), | |
638 | tipc_own_addr, | |
b97bf3fd PL |
639 | CONN_MANAGER, |
640 | CONN_PROBE_REPLY, | |
641 | TIPC_OK, | |
642 | port_out_seqno(p_ptr), | |
643 | 0); | |
644 | } | |
645 | p_ptr->probing_state = CONFIRMED; | |
646 | port_incr_out_seqno(p_ptr); | |
647 | exit: | |
648 | if (p_ptr) | |
4323add6 PL |
649 | tipc_port_unlock(p_ptr); |
650 | tipc_net_route_msg(r_buf); | |
651 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
652 | buf_discard(buf); |
653 | } | |
654 | ||
655 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
656 | { | |
c4307285 | 657 | struct publication *publ; |
b97bf3fd PL |
658 | |
659 | if (full_id) | |
c4307285 | 660 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 661 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
c4307285 | 662 | tipc_node(tipc_own_addr), p_ptr->publ.ref); |
b97bf3fd PL |
663 | else |
664 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
665 | ||
c4307285 YH |
666 | if (p_ptr->publ.connected) { |
667 | u32 dport = port_peerport(p_ptr); | |
668 | u32 destnode = port_peernode(p_ptr); | |
669 | ||
670 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
671 | tipc_zone(destnode), tipc_cluster(destnode), | |
672 | tipc_node(destnode), dport); | |
673 | if (p_ptr->publ.conn_type != 0) | |
674 | tipc_printf(buf, " via {%u,%u}", | |
675 | p_ptr->publ.conn_type, | |
676 | p_ptr->publ.conn_instance); | |
677 | } | |
678 | else if (p_ptr->publ.published) { | |
679 | tipc_printf(buf, " bound to"); | |
680 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
681 | if (publ->lower == publ->upper) |
682 | tipc_printf(buf, " {%u,%u}", publ->type, | |
683 | publ->lower); | |
684 | else | |
c4307285 | 685 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 686 | publ->lower, publ->upper); |
c4307285 YH |
687 | } |
688 | } | |
689 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
690 | } |
691 | ||
692 | #define MAX_PORT_QUERY 32768 | |
693 | ||
4323add6 | 694 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
695 | { |
696 | struct sk_buff *buf; | |
697 | struct tlv_desc *rep_tlv; | |
698 | struct print_buf pb; | |
699 | struct port *p_ptr; | |
700 | int str_len; | |
701 | ||
4323add6 | 702 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
703 | if (!buf) |
704 | return NULL; | |
705 | rep_tlv = (struct tlv_desc *)buf->data; | |
706 | ||
4323add6 PL |
707 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
708 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
709 | list_for_each_entry(p_ptr, &ports, port_list) { |
710 | spin_lock_bh(p_ptr->publ.lock); | |
711 | port_print(p_ptr, &pb, 0); | |
712 | spin_unlock_bh(p_ptr->publ.lock); | |
713 | } | |
4323add6 PL |
714 | spin_unlock_bh(&tipc_port_list_lock); |
715 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
716 | |
717 | skb_put(buf, TLV_SPACE(str_len)); | |
718 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
719 | ||
720 | return buf; | |
721 | } | |
722 | ||
723 | #if 0 | |
724 | ||
725 | #define MAX_PORT_STATS 2000 | |
726 | ||
727 | struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) | |
728 | { | |
729 | u32 ref; | |
730 | struct port *p_ptr; | |
731 | struct sk_buff *buf; | |
732 | struct tlv_desc *rep_tlv; | |
733 | struct print_buf pb; | |
734 | int str_len; | |
735 | ||
736 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) | |
737 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
738 | ||
739 | ref = *(u32 *)TLV_DATA(req_tlv_area); | |
740 | ref = ntohl(ref); | |
741 | ||
4323add6 | 742 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
743 | if (!p_ptr) |
744 | return cfg_reply_error_string("port not found"); | |
745 | ||
4323add6 | 746 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); |
b97bf3fd | 747 | if (!buf) { |
4323add6 | 748 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
749 | return NULL; |
750 | } | |
751 | rep_tlv = (struct tlv_desc *)buf->data; | |
752 | ||
4323add6 | 753 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); |
b97bf3fd PL |
754 | port_print(p_ptr, &pb, 1); |
755 | /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ | |
4323add6 PL |
756 | tipc_port_unlock(p_ptr); |
757 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
758 | |
759 | skb_put(buf, TLV_SPACE(str_len)); | |
760 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
761 | ||
762 | return buf; | |
763 | } | |
764 | ||
765 | #endif | |
766 | ||
4323add6 | 767 | void tipc_port_reinit(void) |
b97bf3fd PL |
768 | { |
769 | struct port *p_ptr; | |
770 | struct tipc_msg *msg; | |
771 | ||
4323add6 | 772 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
773 | list_for_each_entry(p_ptr, &ports, port_list) { |
774 | msg = &p_ptr->publ.phdr; | |
775 | if (msg_orignode(msg) == tipc_own_addr) | |
776 | break; | |
6d4a6672 | 777 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
778 | msg_set_orignode(msg, tipc_own_addr); |
779 | } | |
4323add6 | 780 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
781 | } |
782 | ||
783 | ||
784 | /* | |
785 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
786 | * to the tipc_port interface. | |
787 | */ | |
788 | ||
789 | static void port_dispatcher_sigh(void *dummy) | |
790 | { | |
791 | struct sk_buff *buf; | |
792 | ||
793 | spin_lock_bh(&queue_lock); | |
794 | buf = msg_queue_head; | |
1fc54d8f | 795 | msg_queue_head = NULL; |
b97bf3fd PL |
796 | spin_unlock_bh(&queue_lock); |
797 | ||
798 | while (buf) { | |
799 | struct port *p_ptr; | |
800 | struct user_port *up_ptr; | |
801 | struct tipc_portid orig; | |
802 | struct tipc_name_seq dseq; | |
803 | void *usr_handle; | |
804 | int connected; | |
805 | int published; | |
9688243b | 806 | u32 message_type; |
b97bf3fd PL |
807 | |
808 | struct sk_buff *next = buf->next; | |
809 | struct tipc_msg *msg = buf_msg(buf); | |
810 | u32 dref = msg_destport(msg); | |
c4307285 | 811 | |
9688243b AS |
812 | message_type = msg_type(msg); |
813 | if (message_type > TIPC_DIRECT_MSG) | |
814 | goto reject; /* Unsupported message type */ | |
815 | ||
4323add6 | 816 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
817 | if (!p_ptr) |
818 | goto reject; /* Port deleted while msg in queue */ | |
819 | ||
b97bf3fd PL |
820 | orig.ref = msg_origport(msg); |
821 | orig.node = msg_orignode(msg); | |
822 | up_ptr = p_ptr->user_port; | |
823 | usr_handle = up_ptr->usr_handle; | |
824 | connected = p_ptr->publ.connected; | |
825 | published = p_ptr->publ.published; | |
826 | ||
827 | if (unlikely(msg_errcode(msg))) | |
828 | goto err; | |
829 | ||
9688243b | 830 | switch (message_type) { |
c4307285 | 831 | |
b97bf3fd PL |
832 | case TIPC_CONN_MSG:{ |
833 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
834 | u32 peer_port = port_peerport(p_ptr); | |
835 | u32 peer_node = port_peernode(p_ptr); | |
836 | ||
4cec72c8 | 837 | tipc_port_unlock(p_ptr); |
5307e469 AS |
838 | if (unlikely(!cb)) |
839 | goto reject; | |
b97bf3fd | 840 | if (unlikely(!connected)) { |
84b07c16 | 841 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 842 | goto reject; |
84b07c16 AS |
843 | } else if ((msg_origport(msg) != peer_port) || |
844 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 845 | goto reject; |
c4307285 | 846 | if (unlikely(++p_ptr->publ.conn_unacked >= |
b97bf3fd | 847 | TIPC_FLOW_CONTROL_WIN)) |
c4307285 | 848 | tipc_acknowledge(dref, |
b97bf3fd PL |
849 | p_ptr->publ.conn_unacked); |
850 | skb_pull(buf, msg_hdr_sz(msg)); | |
851 | cb(usr_handle, dref, &buf, msg_data(msg), | |
852 | msg_data_sz(msg)); | |
853 | break; | |
854 | } | |
855 | case TIPC_DIRECT_MSG:{ | |
856 | tipc_msg_event cb = up_ptr->msg_cb; | |
857 | ||
4cec72c8 | 858 | tipc_port_unlock(p_ptr); |
5307e469 | 859 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
860 | goto reject; |
861 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 862 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
863 | msg_data_sz(msg), msg_importance(msg), |
864 | &orig); | |
865 | break; | |
866 | } | |
9688243b | 867 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
868 | case TIPC_NAMED_MSG:{ |
869 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
870 | ||
4cec72c8 | 871 | tipc_port_unlock(p_ptr); |
5307e469 | 872 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
873 | goto reject; |
874 | dseq.type = msg_nametype(msg); | |
875 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
876 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
877 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 878 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 879 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
880 | msg_data_sz(msg), msg_importance(msg), |
881 | &orig, &dseq); | |
882 | break; | |
883 | } | |
884 | } | |
885 | if (buf) | |
886 | buf_discard(buf); | |
887 | buf = next; | |
888 | continue; | |
889 | err: | |
9688243b | 890 | switch (message_type) { |
c4307285 | 891 | |
b97bf3fd | 892 | case TIPC_CONN_MSG:{ |
c4307285 | 893 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
894 | up_ptr->conn_err_cb; |
895 | u32 peer_port = port_peerport(p_ptr); | |
896 | u32 peer_node = port_peernode(p_ptr); | |
897 | ||
4cec72c8 | 898 | tipc_port_unlock(p_ptr); |
5307e469 | 899 | if (!cb || !connected) |
b97bf3fd | 900 | break; |
5307e469 AS |
901 | if ((msg_origport(msg) != peer_port) || |
902 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
903 | break; |
904 | tipc_disconnect(dref); | |
905 | skb_pull(buf, msg_hdr_sz(msg)); | |
906 | cb(usr_handle, dref, &buf, msg_data(msg), | |
907 | msg_data_sz(msg), msg_errcode(msg)); | |
908 | break; | |
909 | } | |
910 | case TIPC_DIRECT_MSG:{ | |
911 | tipc_msg_err_event cb = up_ptr->err_cb; | |
912 | ||
4cec72c8 | 913 | tipc_port_unlock(p_ptr); |
5307e469 | 914 | if (!cb || connected) |
b97bf3fd PL |
915 | break; |
916 | skb_pull(buf, msg_hdr_sz(msg)); | |
917 | cb(usr_handle, dref, &buf, msg_data(msg), | |
918 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
919 | break; | |
920 | } | |
9688243b | 921 | case TIPC_MCAST_MSG: |
b97bf3fd | 922 | case TIPC_NAMED_MSG:{ |
c4307285 | 923 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
924 | up_ptr->named_err_cb; |
925 | ||
4cec72c8 | 926 | tipc_port_unlock(p_ptr); |
5307e469 | 927 | if (!cb || connected) |
b97bf3fd PL |
928 | break; |
929 | dseq.type = msg_nametype(msg); | |
930 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
931 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
932 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 933 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 934 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
935 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
936 | break; | |
937 | } | |
938 | } | |
939 | if (buf) | |
940 | buf_discard(buf); | |
941 | buf = next; | |
942 | continue; | |
943 | reject: | |
944 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
945 | buf = next; | |
946 | } | |
947 | } | |
948 | ||
949 | /* | |
950 | * port_dispatcher(): Dispatcher for messages destinated | |
951 | * to the tipc_port interface. Called with port locked. | |
952 | */ | |
953 | ||
954 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
955 | { | |
956 | buf->next = NULL; | |
957 | spin_lock_bh(&queue_lock); | |
958 | if (msg_queue_head) { | |
959 | msg_queue_tail->next = buf; | |
960 | msg_queue_tail = buf; | |
961 | } else { | |
962 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 963 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
964 | } |
965 | spin_unlock_bh(&queue_lock); | |
0e35fd5e | 966 | return 0; |
b97bf3fd PL |
967 | } |
968 | ||
c4307285 | 969 | /* |
b97bf3fd | 970 | * Wake up port after congestion: Called with port locked, |
c4307285 | 971 | * |
b97bf3fd PL |
972 | */ |
973 | ||
974 | static void port_wakeup_sh(unsigned long ref) | |
975 | { | |
976 | struct port *p_ptr; | |
977 | struct user_port *up_ptr; | |
1fc54d8f SR |
978 | tipc_continue_event cb = NULL; |
979 | void *uh = NULL; | |
b97bf3fd | 980 | |
4323add6 | 981 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
982 | if (p_ptr) { |
983 | up_ptr = p_ptr->user_port; | |
984 | if (up_ptr) { | |
985 | cb = up_ptr->continue_event_cb; | |
986 | uh = up_ptr->usr_handle; | |
987 | } | |
4323add6 | 988 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
989 | } |
990 | if (cb) | |
991 | cb(uh, ref); | |
992 | } | |
993 | ||
994 | ||
995 | static void port_wakeup(struct tipc_port *p_ptr) | |
996 | { | |
4323add6 | 997 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
998 | } |
999 | ||
1000 | void tipc_acknowledge(u32 ref, u32 ack) | |
1001 | { | |
1002 | struct port *p_ptr; | |
1fc54d8f | 1003 | struct sk_buff *buf = NULL; |
b97bf3fd | 1004 | |
4323add6 | 1005 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1006 | if (!p_ptr) |
1007 | return; | |
1008 | if (p_ptr->publ.connected) { | |
1009 | p_ptr->publ.conn_unacked -= ack; | |
1010 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1011 | port_peernode(p_ptr), | |
1012 | ref, | |
1013 | tipc_own_addr, | |
1014 | CONN_MANAGER, | |
1015 | CONN_ACK, | |
c4307285 | 1016 | TIPC_OK, |
b97bf3fd PL |
1017 | port_out_seqno(p_ptr), |
1018 | ack); | |
1019 | } | |
4323add6 PL |
1020 | tipc_port_unlock(p_ptr); |
1021 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1022 | } |
1023 | ||
1024 | /* | |
1025 | * tipc_createport(): user level call. Will add port to | |
1026 | * registry if non-zero user_ref. | |
1027 | */ | |
1028 | ||
c4307285 YH |
1029 | int tipc_createport(u32 user_ref, |
1030 | void *usr_handle, | |
1031 | unsigned int importance, | |
1032 | tipc_msg_err_event error_cb, | |
1033 | tipc_named_msg_err_event named_error_cb, | |
1034 | tipc_conn_shutdown_event conn_error_cb, | |
1035 | tipc_msg_event msg_cb, | |
1036 | tipc_named_msg_event named_msg_cb, | |
1037 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
1038 | tipc_continue_event continue_event_cb,/* May be zero */ |
1039 | u32 *portref) | |
1040 | { | |
1041 | struct user_port *up_ptr; | |
c4307285 | 1042 | struct port *p_ptr; |
b97bf3fd | 1043 | |
0da974f4 | 1044 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 1045 | if (!up_ptr) { |
a75bf874 | 1046 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
1047 | return -ENOMEM; |
1048 | } | |
0ea52241 AS |
1049 | p_ptr = (struct port *)tipc_createport_raw(NULL, port_dispatcher, |
1050 | port_wakeup, importance); | |
1051 | if (!p_ptr) { | |
b97bf3fd PL |
1052 | kfree(up_ptr); |
1053 | return -ENOMEM; | |
1054 | } | |
1055 | ||
1056 | p_ptr->user_port = up_ptr; | |
1057 | up_ptr->user_ref = user_ref; | |
1058 | up_ptr->usr_handle = usr_handle; | |
1059 | up_ptr->ref = p_ptr->publ.ref; | |
1060 | up_ptr->err_cb = error_cb; | |
1061 | up_ptr->named_err_cb = named_error_cb; | |
1062 | up_ptr->conn_err_cb = conn_error_cb; | |
1063 | up_ptr->msg_cb = msg_cb; | |
1064 | up_ptr->named_msg_cb = named_msg_cb; | |
1065 | up_ptr->conn_msg_cb = conn_msg_cb; | |
1066 | up_ptr->continue_event_cb = continue_event_cb; | |
1067 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 1068 | tipc_reg_add_port(up_ptr); |
b97bf3fd | 1069 | *portref = p_ptr->publ.ref; |
4323add6 | 1070 | tipc_port_unlock(p_ptr); |
0e35fd5e | 1071 | return 0; |
b97bf3fd PL |
1072 | } |
1073 | ||
1074 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) | |
1075 | { | |
1076 | id->ref = ref; | |
1077 | id->node = tipc_own_addr; | |
0e35fd5e | 1078 | return 0; |
b97bf3fd PL |
1079 | } |
1080 | ||
1081 | int tipc_portimportance(u32 ref, unsigned int *importance) | |
1082 | { | |
1083 | struct port *p_ptr; | |
c4307285 | 1084 | |
4323add6 | 1085 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1086 | if (!p_ptr) |
1087 | return -EINVAL; | |
1088 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
4cec72c8 | 1089 | tipc_port_unlock(p_ptr); |
0e35fd5e | 1090 | return 0; |
b97bf3fd PL |
1091 | } |
1092 | ||
1093 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
1094 | { | |
1095 | struct port *p_ptr; | |
1096 | ||
1097 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1098 | return -EINVAL; | |
1099 | ||
4323add6 | 1100 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1101 | if (!p_ptr) |
1102 | return -EINVAL; | |
1103 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
4cec72c8 | 1104 | tipc_port_unlock(p_ptr); |
0e35fd5e | 1105 | return 0; |
b97bf3fd PL |
1106 | } |
1107 | ||
1108 | ||
1109 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1110 | { | |
1111 | struct port *p_ptr; | |
1112 | struct publication *publ; | |
1113 | u32 key; | |
1114 | int res = -EINVAL; | |
1115 | ||
4323add6 | 1116 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
1117 | if (!p_ptr) |
1118 | return -EINVAL; | |
1119 | ||
b97bf3fd PL |
1120 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1121 | "lower = %u, upper = %u\n", | |
1122 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
b97bf3fd PL |
1123 | if (p_ptr->publ.connected) |
1124 | goto exit; | |
1125 | if (seq->lower > seq->upper) | |
1126 | goto exit; | |
1127 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1128 | goto exit; | |
1129 | key = ref + p_ptr->pub_count + 1; | |
1130 | if (key == ref) { | |
1131 | res = -EADDRINUSE; | |
1132 | goto exit; | |
1133 | } | |
4323add6 PL |
1134 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1135 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1136 | if (publ) { |
1137 | list_add(&publ->pport_list, &p_ptr->publications); | |
1138 | p_ptr->pub_count++; | |
1139 | p_ptr->publ.published = 1; | |
0e35fd5e | 1140 | res = 0; |
b97bf3fd PL |
1141 | } |
1142 | exit: | |
4323add6 | 1143 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1144 | return res; |
1145 | } | |
1146 | ||
1147 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1148 | { | |
1149 | struct port *p_ptr; | |
1150 | struct publication *publ; | |
1151 | struct publication *tpubl; | |
1152 | int res = -EINVAL; | |
c4307285 | 1153 | |
4323add6 | 1154 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1155 | if (!p_ptr) |
1156 | return -EINVAL; | |
b97bf3fd | 1157 | if (!seq) { |
c4307285 | 1158 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1159 | &p_ptr->publications, pport_list) { |
c4307285 | 1160 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1161 | publ->ref, publ->key); |
b97bf3fd | 1162 | } |
0e35fd5e | 1163 | res = 0; |
b97bf3fd | 1164 | } else { |
c4307285 | 1165 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1166 | &p_ptr->publications, pport_list) { |
1167 | if (publ->scope != scope) | |
1168 | continue; | |
1169 | if (publ->type != seq->type) | |
1170 | continue; | |
1171 | if (publ->lower != seq->lower) | |
1172 | continue; | |
1173 | if (publ->upper != seq->upper) | |
1174 | break; | |
c4307285 | 1175 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1176 | publ->ref, publ->key); |
0e35fd5e | 1177 | res = 0; |
b97bf3fd PL |
1178 | break; |
1179 | } | |
1180 | } | |
1181 | if (list_empty(&p_ptr->publications)) | |
1182 | p_ptr->publ.published = 0; | |
4323add6 | 1183 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1184 | return res; |
1185 | } | |
1186 | ||
1187 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1188 | { | |
1189 | struct port *p_ptr; | |
1190 | struct tipc_msg *msg; | |
1191 | int res = -EINVAL; | |
1192 | ||
4323add6 | 1193 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1194 | if (!p_ptr) |
1195 | return -EINVAL; | |
1196 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1197 | goto exit; | |
1198 | if (!peer->ref) | |
1199 | goto exit; | |
1200 | ||
1201 | msg = &p_ptr->publ.phdr; | |
1202 | msg_set_destnode(msg, peer->node); | |
1203 | msg_set_destport(msg, peer->ref); | |
1204 | msg_set_orignode(msg, tipc_own_addr); | |
1205 | msg_set_origport(msg, p_ptr->publ.ref); | |
1206 | msg_set_transp_seqno(msg, 42); | |
1207 | msg_set_type(msg, TIPC_CONN_MSG); | |
1208 | if (!may_route(peer->node)) | |
1209 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1210 | else | |
1211 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1212 | ||
1213 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1214 | p_ptr->probing_state = CONFIRMED; | |
1215 | p_ptr->publ.connected = 1; | |
1216 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1217 | ||
4323add6 | 1218 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1219 | (void *)(unsigned long)ref, |
b97bf3fd | 1220 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 1221 | res = 0; |
b97bf3fd | 1222 | exit: |
4323add6 | 1223 | tipc_port_unlock(p_ptr); |
05646c91 | 1224 | p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1225 | return res; |
1226 | } | |
1227 | ||
0c3141e9 AS |
1228 | /** |
1229 | * tipc_disconnect_port - disconnect port from peer | |
1230 | * | |
1231 | * Port must be locked. | |
1232 | */ | |
1233 | ||
1234 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1235 | { | |
1236 | int res; | |
1237 | ||
1238 | if (tp_ptr->connected) { | |
1239 | tp_ptr->connected = 0; | |
1240 | /* let timer expire on it's own to avoid deadlock! */ | |
1241 | tipc_nodesub_unsubscribe( | |
1242 | &((struct port *)tp_ptr)->subscription); | |
0e35fd5e | 1243 | res = 0; |
0c3141e9 AS |
1244 | } else { |
1245 | res = -ENOTCONN; | |
1246 | } | |
1247 | return res; | |
1248 | } | |
1249 | ||
b97bf3fd PL |
1250 | /* |
1251 | * tipc_disconnect(): Disconnect port form peer. | |
1252 | * This is a node local operation. | |
1253 | */ | |
1254 | ||
1255 | int tipc_disconnect(u32 ref) | |
1256 | { | |
1257 | struct port *p_ptr; | |
0c3141e9 | 1258 | int res; |
b97bf3fd | 1259 | |
4323add6 | 1260 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1261 | if (!p_ptr) |
1262 | return -EINVAL; | |
0c3141e9 | 1263 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1264 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1265 | return res; |
1266 | } | |
1267 | ||
1268 | /* | |
1269 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1270 | */ | |
1271 | int tipc_shutdown(u32 ref) | |
1272 | { | |
1273 | struct port *p_ptr; | |
1fc54d8f | 1274 | struct sk_buff *buf = NULL; |
b97bf3fd | 1275 | |
4323add6 | 1276 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1277 | if (!p_ptr) |
1278 | return -EINVAL; | |
1279 | ||
1280 | if (p_ptr->publ.connected) { | |
1281 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1282 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1283 | imp++; | |
1284 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1285 | port_peernode(p_ptr), | |
1286 | ref, | |
1287 | tipc_own_addr, | |
1288 | imp, | |
1289 | TIPC_CONN_MSG, | |
c4307285 | 1290 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1291 | port_out_seqno(p_ptr), |
1292 | 0); | |
1293 | } | |
4323add6 PL |
1294 | tipc_port_unlock(p_ptr); |
1295 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1296 | return tipc_disconnect(ref); |
1297 | } | |
1298 | ||
1299 | int tipc_isconnected(u32 ref, int *isconnected) | |
1300 | { | |
1301 | struct port *p_ptr; | |
c4307285 | 1302 | |
4323add6 | 1303 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1304 | if (!p_ptr) |
1305 | return -EINVAL; | |
1306 | *isconnected = p_ptr->publ.connected; | |
4323add6 | 1307 | tipc_port_unlock(p_ptr); |
0e35fd5e | 1308 | return 0; |
b97bf3fd PL |
1309 | } |
1310 | ||
1311 | int tipc_peer(u32 ref, struct tipc_portid *peer) | |
1312 | { | |
1313 | struct port *p_ptr; | |
1314 | int res; | |
c4307285 | 1315 | |
4323add6 | 1316 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1317 | if (!p_ptr) |
1318 | return -EINVAL; | |
1319 | if (p_ptr->publ.connected) { | |
1320 | peer->ref = port_peerport(p_ptr); | |
1321 | peer->node = port_peernode(p_ptr); | |
0e35fd5e | 1322 | res = 0; |
b97bf3fd PL |
1323 | } else |
1324 | res = -ENOTCONN; | |
4323add6 | 1325 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1326 | return res; |
1327 | } | |
1328 | ||
1329 | int tipc_ref_valid(u32 ref) | |
1330 | { | |
1331 | /* Works irrespective of type */ | |
4323add6 | 1332 | return !!tipc_ref_deref(ref); |
b97bf3fd PL |
1333 | } |
1334 | ||
1335 | ||
1336 | /* | |
4323add6 | 1337 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1338 | * message for this node. |
1339 | */ | |
1340 | ||
4323add6 | 1341 | int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
b97bf3fd PL |
1342 | struct iovec const *msg_sect) |
1343 | { | |
1344 | struct sk_buff *buf; | |
1345 | int res; | |
c4307285 | 1346 | |
b97bf3fd PL |
1347 | res = msg_build(&sender->publ.phdr, msg_sect, num_sect, |
1348 | MAX_MSG_SIZE, !sender->user_port, &buf); | |
1349 | if (likely(buf)) | |
4323add6 | 1350 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1351 | return res; |
1352 | } | |
1353 | ||
1354 | /** | |
1355 | * tipc_send - send message sections on connection | |
1356 | */ | |
1357 | ||
1358 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1359 | { | |
1360 | struct port *p_ptr; | |
1361 | u32 destnode; | |
1362 | int res; | |
1363 | ||
4323add6 | 1364 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1365 | if (!p_ptr || !p_ptr->publ.connected) |
1366 | return -EINVAL; | |
1367 | ||
1368 | p_ptr->publ.congested = 1; | |
4323add6 | 1369 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1370 | destnode = port_peernode(p_ptr); |
1371 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1372 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1373 | destnode); | |
b97bf3fd | 1374 | else |
4323add6 | 1375 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1376 | |
1377 | if (likely(res != -ELINKCONG)) { | |
1378 | port_incr_out_seqno(p_ptr); | |
1379 | p_ptr->publ.congested = 0; | |
1380 | p_ptr->sent++; | |
1381 | return res; | |
1382 | } | |
1383 | } | |
1384 | if (port_unreliable(p_ptr)) { | |
1385 | p_ptr->publ.congested = 0; | |
1386 | /* Just calculate msg length and return */ | |
1387 | return msg_calc_data_size(msg_sect, num_sect); | |
1388 | } | |
1389 | return -ELINKCONG; | |
1390 | } | |
1391 | ||
c4307285 | 1392 | /** |
b97bf3fd PL |
1393 | * tipc_send_buf - send message buffer on connection |
1394 | */ | |
1395 | ||
1396 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) | |
1397 | { | |
1398 | struct port *p_ptr; | |
1399 | struct tipc_msg *msg; | |
1400 | u32 destnode; | |
1401 | u32 hsz; | |
1402 | u32 sz; | |
1403 | u32 res; | |
c4307285 | 1404 | |
4323add6 | 1405 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1406 | if (!p_ptr || !p_ptr->publ.connected) |
1407 | return -EINVAL; | |
1408 | ||
1409 | msg = &p_ptr->publ.phdr; | |
1410 | hsz = msg_hdr_sz(msg); | |
1411 | sz = hsz + dsz; | |
1412 | msg_set_size(msg, sz); | |
1413 | if (skb_cow(buf, hsz)) | |
1414 | return -ENOMEM; | |
1415 | ||
1416 | skb_push(buf, hsz); | |
27d7ff46 | 1417 | skb_copy_to_linear_data(buf, msg, hsz); |
b97bf3fd PL |
1418 | destnode = msg_destnode(msg); |
1419 | p_ptr->publ.congested = 1; | |
4323add6 | 1420 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1421 | if (likely(destnode != tipc_own_addr)) |
1422 | res = tipc_send_buf_fast(buf, destnode); | |
1423 | else { | |
4323add6 | 1424 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1425 | res = sz; |
1426 | } | |
1427 | if (likely(res != -ELINKCONG)) { | |
1428 | port_incr_out_seqno(p_ptr); | |
1429 | p_ptr->sent++; | |
1430 | p_ptr->publ.congested = 0; | |
1431 | return res; | |
1432 | } | |
1433 | } | |
1434 | if (port_unreliable(p_ptr)) { | |
1435 | p_ptr->publ.congested = 0; | |
1436 | return dsz; | |
1437 | } | |
1438 | return -ELINKCONG; | |
1439 | } | |
1440 | ||
1441 | /** | |
1442 | * tipc_forward2name - forward message sections to port name | |
1443 | */ | |
1444 | ||
c4307285 YH |
1445 | int tipc_forward2name(u32 ref, |
1446 | struct tipc_name const *name, | |
b97bf3fd | 1447 | u32 domain, |
c4307285 | 1448 | u32 num_sect, |
b97bf3fd | 1449 | struct iovec const *msg_sect, |
c4307285 | 1450 | struct tipc_portid const *orig, |
b97bf3fd PL |
1451 | unsigned int importance) |
1452 | { | |
1453 | struct port *p_ptr; | |
1454 | struct tipc_msg *msg; | |
1455 | u32 destnode = domain; | |
1456 | u32 destport = 0; | |
1457 | int res; | |
1458 | ||
4323add6 | 1459 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1460 | if (!p_ptr || p_ptr->publ.connected) |
1461 | return -EINVAL; | |
1462 | ||
1463 | msg = &p_ptr->publ.phdr; | |
1464 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1465 | msg_set_orignode(msg, orig->node); | |
1466 | msg_set_origport(msg, orig->ref); | |
1467 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1468 | msg_set_nametype(msg, name->type); | |
1469 | msg_set_nameinst(msg, name->instance); | |
1470 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1471 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1472 | msg_set_importance(msg,importance); | |
4323add6 | 1473 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1474 | msg_set_destnode(msg, destnode); |
1475 | msg_set_destport(msg, destport); | |
1476 | ||
1477 | if (likely(destport || destnode)) { | |
1478 | p_ptr->sent++; | |
1479 | if (likely(destnode == tipc_own_addr)) | |
4323add6 | 1480 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
c4307285 | 1481 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
4323add6 | 1482 | destnode); |
b97bf3fd PL |
1483 | if (likely(res != -ELINKCONG)) |
1484 | return res; | |
1485 | if (port_unreliable(p_ptr)) { | |
1486 | /* Just calculate msg length and return */ | |
1487 | return msg_calc_data_size(msg_sect, num_sect); | |
1488 | } | |
1489 | return -ELINKCONG; | |
1490 | } | |
c4307285 | 1491 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1492 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1493 | } |
1494 | ||
1495 | /** | |
1496 | * tipc_send2name - send message sections to port name | |
1497 | */ | |
1498 | ||
c4307285 | 1499 | int tipc_send2name(u32 ref, |
b97bf3fd | 1500 | struct tipc_name const *name, |
c4307285 YH |
1501 | unsigned int domain, |
1502 | unsigned int num_sect, | |
b97bf3fd PL |
1503 | struct iovec const *msg_sect) |
1504 | { | |
1505 | struct tipc_portid orig; | |
1506 | ||
1507 | orig.ref = ref; | |
1508 | orig.node = tipc_own_addr; | |
1509 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | |
1510 | TIPC_PORT_IMPORTANCE); | |
1511 | } | |
1512 | ||
c4307285 | 1513 | /** |
b97bf3fd PL |
1514 | * tipc_forward_buf2name - forward message buffer to port name |
1515 | */ | |
1516 | ||
1517 | int tipc_forward_buf2name(u32 ref, | |
1518 | struct tipc_name const *name, | |
1519 | u32 domain, | |
1520 | struct sk_buff *buf, | |
1521 | unsigned int dsz, | |
1522 | struct tipc_portid const *orig, | |
1523 | unsigned int importance) | |
1524 | { | |
1525 | struct port *p_ptr; | |
1526 | struct tipc_msg *msg; | |
1527 | u32 destnode = domain; | |
1528 | u32 destport = 0; | |
1529 | int res; | |
1530 | ||
4323add6 | 1531 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1532 | if (!p_ptr || p_ptr->publ.connected) |
1533 | return -EINVAL; | |
1534 | ||
1535 | msg = &p_ptr->publ.phdr; | |
1536 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1537 | msg_set_importance(msg, importance); | |
1538 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1539 | msg_set_orignode(msg, orig->node); | |
1540 | msg_set_origport(msg, orig->ref); | |
1541 | msg_set_nametype(msg, name->type); | |
1542 | msg_set_nameinst(msg, name->instance); | |
1543 | msg_set_lookup_scope(msg, addr_scope(domain)); | |
1544 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1545 | msg_set_size(msg, LONG_H_SIZE + dsz); | |
4323add6 | 1546 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1547 | msg_set_destnode(msg, destnode); |
1548 | msg_set_destport(msg, destport); | |
1549 | msg_dbg(msg, "forw2name ==> "); | |
1550 | if (skb_cow(buf, LONG_H_SIZE)) | |
1551 | return -ENOMEM; | |
1552 | skb_push(buf, LONG_H_SIZE); | |
27d7ff46 | 1553 | skb_copy_to_linear_data(buf, msg, LONG_H_SIZE); |
b97bf3fd PL |
1554 | msg_dbg(buf_msg(buf),"PREP:"); |
1555 | if (likely(destport || destnode)) { | |
1556 | p_ptr->sent++; | |
1557 | if (destnode == tipc_own_addr) | |
4323add6 | 1558 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1559 | res = tipc_send_buf_fast(buf, destnode); |
1560 | if (likely(res != -ELINKCONG)) | |
1561 | return res; | |
1562 | if (port_unreliable(p_ptr)) | |
1563 | return dsz; | |
1564 | return -ELINKCONG; | |
1565 | } | |
1566 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); | |
1567 | } | |
1568 | ||
c4307285 | 1569 | /** |
b97bf3fd PL |
1570 | * tipc_send_buf2name - send message buffer to port name |
1571 | */ | |
1572 | ||
c4307285 YH |
1573 | int tipc_send_buf2name(u32 ref, |
1574 | struct tipc_name const *dest, | |
b97bf3fd | 1575 | u32 domain, |
c4307285 | 1576 | struct sk_buff *buf, |
b97bf3fd PL |
1577 | unsigned int dsz) |
1578 | { | |
1579 | struct tipc_portid orig; | |
1580 | ||
1581 | orig.ref = ref; | |
1582 | orig.node = tipc_own_addr; | |
1583 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, | |
1584 | TIPC_PORT_IMPORTANCE); | |
1585 | } | |
1586 | ||
c4307285 | 1587 | /** |
b97bf3fd PL |
1588 | * tipc_forward2port - forward message sections to port identity |
1589 | */ | |
1590 | ||
1591 | int tipc_forward2port(u32 ref, | |
1592 | struct tipc_portid const *dest, | |
c4307285 | 1593 | unsigned int num_sect, |
b97bf3fd | 1594 | struct iovec const *msg_sect, |
c4307285 | 1595 | struct tipc_portid const *orig, |
b97bf3fd PL |
1596 | unsigned int importance) |
1597 | { | |
1598 | struct port *p_ptr; | |
1599 | struct tipc_msg *msg; | |
1600 | int res; | |
1601 | ||
4323add6 | 1602 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1603 | if (!p_ptr || p_ptr->publ.connected) |
1604 | return -EINVAL; | |
1605 | ||
1606 | msg = &p_ptr->publ.phdr; | |
1607 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1608 | msg_set_orignode(msg, orig->node); | |
1609 | msg_set_origport(msg, orig->ref); | |
1610 | msg_set_destnode(msg, dest->node); | |
1611 | msg_set_destport(msg, dest->ref); | |
1612 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1613 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1614 | msg_set_importance(msg, importance); | |
1615 | p_ptr->sent++; | |
1616 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1617 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1618 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1619 | if (likely(res != -ELINKCONG)) |
1620 | return res; | |
1621 | if (port_unreliable(p_ptr)) { | |
1622 | /* Just calculate msg length and return */ | |
1623 | return msg_calc_data_size(msg_sect, num_sect); | |
1624 | } | |
1625 | return -ELINKCONG; | |
1626 | } | |
1627 | ||
c4307285 YH |
1628 | /** |
1629 | * tipc_send2port - send message sections to port identity | |
b97bf3fd PL |
1630 | */ |
1631 | ||
c4307285 | 1632 | int tipc_send2port(u32 ref, |
b97bf3fd | 1633 | struct tipc_portid const *dest, |
c4307285 | 1634 | unsigned int num_sect, |
b97bf3fd PL |
1635 | struct iovec const *msg_sect) |
1636 | { | |
1637 | struct tipc_portid orig; | |
1638 | ||
1639 | orig.ref = ref; | |
1640 | orig.node = tipc_own_addr; | |
c4307285 | 1641 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, |
b97bf3fd PL |
1642 | TIPC_PORT_IMPORTANCE); |
1643 | } | |
1644 | ||
c4307285 | 1645 | /** |
b97bf3fd PL |
1646 | * tipc_forward_buf2port - forward message buffer to port identity |
1647 | */ | |
1648 | int tipc_forward_buf2port(u32 ref, | |
1649 | struct tipc_portid const *dest, | |
1650 | struct sk_buff *buf, | |
1651 | unsigned int dsz, | |
1652 | struct tipc_portid const *orig, | |
1653 | unsigned int importance) | |
1654 | { | |
1655 | struct port *p_ptr; | |
1656 | struct tipc_msg *msg; | |
1657 | int res; | |
1658 | ||
4323add6 | 1659 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1660 | if (!p_ptr || p_ptr->publ.connected) |
1661 | return -EINVAL; | |
1662 | ||
1663 | msg = &p_ptr->publ.phdr; | |
1664 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1665 | msg_set_orignode(msg, orig->node); | |
1666 | msg_set_origport(msg, orig->ref); | |
1667 | msg_set_destnode(msg, dest->node); | |
1668 | msg_set_destport(msg, dest->ref); | |
1669 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1670 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1671 | msg_set_importance(msg, importance); | |
1672 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | |
1673 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1674 | return -ENOMEM; | |
1675 | ||
1676 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1677 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
b97bf3fd PL |
1678 | msg_dbg(msg, "buf2port: "); |
1679 | p_ptr->sent++; | |
1680 | if (dest->node == tipc_own_addr) | |
4323add6 | 1681 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1682 | res = tipc_send_buf_fast(buf, dest->node); |
1683 | if (likely(res != -ELINKCONG)) | |
1684 | return res; | |
1685 | if (port_unreliable(p_ptr)) | |
1686 | return dsz; | |
1687 | return -ELINKCONG; | |
1688 | } | |
1689 | ||
c4307285 | 1690 | /** |
b97bf3fd PL |
1691 | * tipc_send_buf2port - send message buffer to port identity |
1692 | */ | |
1693 | ||
c4307285 | 1694 | int tipc_send_buf2port(u32 ref, |
b97bf3fd | 1695 | struct tipc_portid const *dest, |
c4307285 | 1696 | struct sk_buff *buf, |
b97bf3fd PL |
1697 | unsigned int dsz) |
1698 | { | |
1699 | struct tipc_portid orig; | |
1700 | ||
1701 | orig.ref = ref; | |
1702 | orig.node = tipc_own_addr; | |
c4307285 | 1703 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, |
b97bf3fd PL |
1704 | TIPC_PORT_IMPORTANCE); |
1705 | } | |
1706 |