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); | |
c68ca7b7 | 119 | res = tipc_msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
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; | |
c68ca7b7 | 244 | tipc_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); | |
b97bf3fd PL |
250 | p_ptr->dispatcher = dispatcher; |
251 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 252 | p_ptr->user_port = NULL; |
b97bf3fd | 253 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 254 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
255 | INIT_LIST_HEAD(&p_ptr->publications); |
256 | INIT_LIST_HEAD(&p_ptr->port_list); | |
257 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 | 258 | spin_unlock_bh(&tipc_port_list_lock); |
0ea52241 | 259 | return &(p_ptr->publ); |
b97bf3fd PL |
260 | } |
261 | ||
262 | int tipc_deleteport(u32 ref) | |
263 | { | |
264 | struct port *p_ptr; | |
1fc54d8f | 265 | struct sk_buff *buf = NULL; |
b97bf3fd | 266 | |
1fc54d8f | 267 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 268 | p_ptr = tipc_port_lock(ref); |
c4307285 | 269 | if (!p_ptr) |
b97bf3fd PL |
270 | return -EINVAL; |
271 | ||
4323add6 PL |
272 | tipc_ref_discard(ref); |
273 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
274 | |
275 | k_cancel_timer(&p_ptr->timer); | |
276 | if (p_ptr->publ.connected) { | |
277 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
4323add6 | 278 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
279 | } |
280 | if (p_ptr->user_port) { | |
4323add6 | 281 | tipc_reg_remove_port(p_ptr->user_port); |
b97bf3fd PL |
282 | kfree(p_ptr->user_port); |
283 | } | |
284 | ||
4323add6 | 285 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
286 | list_del(&p_ptr->port_list); |
287 | list_del(&p_ptr->wait_list); | |
4323add6 | 288 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
289 | k_term_timer(&p_ptr->timer); |
290 | kfree(p_ptr); | |
291 | dbg("Deleted port %u\n", ref); | |
4323add6 | 292 | tipc_net_route_msg(buf); |
0e35fd5e | 293 | return 0; |
b97bf3fd PL |
294 | } |
295 | ||
296 | /** | |
297 | * tipc_get_port() - return port associated with 'ref' | |
c4307285 | 298 | * |
b97bf3fd PL |
299 | * Note: Port is not locked. |
300 | */ | |
301 | ||
302 | struct tipc_port *tipc_get_port(const u32 ref) | |
303 | { | |
4323add6 | 304 | return (struct tipc_port *)tipc_ref_deref(ref); |
b97bf3fd PL |
305 | } |
306 | ||
307 | /** | |
308 | * tipc_get_handle - return user handle associated to port 'ref' | |
309 | */ | |
310 | ||
311 | void *tipc_get_handle(const u32 ref) | |
312 | { | |
313 | struct port *p_ptr; | |
314 | void * handle; | |
315 | ||
4323add6 | 316 | p_ptr = tipc_port_lock(ref); |
b97bf3fd | 317 | if (!p_ptr) |
1fc54d8f | 318 | return NULL; |
b97bf3fd | 319 | handle = p_ptr->publ.usr_handle; |
4323add6 | 320 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
321 | return handle; |
322 | } | |
323 | ||
05790c64 | 324 | static int port_unreliable(struct port *p_ptr) |
b97bf3fd PL |
325 | { |
326 | return msg_src_droppable(&p_ptr->publ.phdr); | |
327 | } | |
328 | ||
329 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
330 | { | |
331 | struct port *p_ptr; | |
c4307285 | 332 | |
4323add6 | 333 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
334 | if (!p_ptr) |
335 | return -EINVAL; | |
336 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 337 | tipc_port_unlock(p_ptr); |
0e35fd5e | 338 | return 0; |
b97bf3fd PL |
339 | } |
340 | ||
341 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
342 | { | |
343 | struct port *p_ptr; | |
c4307285 | 344 | |
4323add6 | 345 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
346 | if (!p_ptr) |
347 | return -EINVAL; | |
348 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | |
4323add6 | 349 | tipc_port_unlock(p_ptr); |
0e35fd5e | 350 | return 0; |
b97bf3fd PL |
351 | } |
352 | ||
05790c64 | 353 | static int port_unreturnable(struct port *p_ptr) |
b97bf3fd PL |
354 | { |
355 | return msg_dest_droppable(&p_ptr->publ.phdr); | |
356 | } | |
357 | ||
358 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
359 | { | |
360 | struct port *p_ptr; | |
c4307285 | 361 | |
4323add6 | 362 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
363 | if (!p_ptr) |
364 | return -EINVAL; | |
365 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 366 | tipc_port_unlock(p_ptr); |
0e35fd5e | 367 | return 0; |
b97bf3fd PL |
368 | } |
369 | ||
370 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
371 | { | |
372 | struct port *p_ptr; | |
c4307285 | 373 | |
4323add6 | 374 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
375 | if (!p_ptr) |
376 | return -EINVAL; | |
377 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | |
4323add6 | 378 | tipc_port_unlock(p_ptr); |
0e35fd5e | 379 | return 0; |
b97bf3fd PL |
380 | } |
381 | ||
c4307285 YH |
382 | /* |
383 | * port_build_proto_msg(): build a port level protocol | |
384 | * or a connection abortion message. Called with | |
b97bf3fd PL |
385 | * tipc_port lock on. |
386 | */ | |
387 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
388 | u32 origport, u32 orignode, | |
c4307285 | 389 | u32 usr, u32 type, u32 err, |
b97bf3fd PL |
390 | u32 seqno, u32 ack) |
391 | { | |
392 | struct sk_buff *buf; | |
393 | struct tipc_msg *msg; | |
c4307285 | 394 | |
b97bf3fd PL |
395 | buf = buf_acquire(LONG_H_SIZE); |
396 | if (buf) { | |
397 | msg = buf_msg(buf); | |
c68ca7b7 | 398 | tipc_msg_init(msg, usr, type, LONG_H_SIZE, destnode); |
75715217 | 399 | msg_set_errcode(msg, err); |
b97bf3fd PL |
400 | msg_set_destport(msg, destport); |
401 | msg_set_origport(msg, origport); | |
b97bf3fd PL |
402 | msg_set_orignode(msg, orignode); |
403 | msg_set_transp_seqno(msg, seqno); | |
404 | msg_set_msgcnt(msg, ack); | |
405 | msg_dbg(msg, "PORT>SEND>:"); | |
406 | } | |
407 | return buf; | |
408 | } | |
409 | ||
b97bf3fd PL |
410 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
411 | { | |
412 | struct tipc_msg *msg = buf_msg(buf); | |
413 | struct sk_buff *rbuf; | |
414 | struct tipc_msg *rmsg; | |
415 | int hdr_sz; | |
416 | u32 imp = msg_importance(msg); | |
417 | u32 data_sz = msg_data_sz(msg); | |
418 | ||
419 | if (data_sz > MAX_REJECT_SIZE) | |
420 | data_sz = MAX_REJECT_SIZE; | |
421 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
422 | imp++; | |
423 | msg_dbg(msg, "port->rej: "); | |
424 | ||
425 | /* discard rejected message if it shouldn't be returned to sender */ | |
426 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
427 | buf_discard(buf); | |
428 | return data_sz; | |
429 | } | |
430 | ||
431 | /* construct rejected message */ | |
432 | if (msg_mcast(msg)) | |
433 | hdr_sz = MCAST_H_SIZE; | |
434 | else | |
435 | hdr_sz = LONG_H_SIZE; | |
436 | rbuf = buf_acquire(data_sz + hdr_sz); | |
437 | if (rbuf == NULL) { | |
438 | buf_discard(buf); | |
439 | return data_sz; | |
440 | } | |
441 | rmsg = buf_msg(rbuf); | |
c68ca7b7 | 442 | tipc_msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg)); |
75715217 | 443 | msg_set_errcode(rmsg, err); |
b97bf3fd | 444 | msg_set_destport(rmsg, msg_origport(msg)); |
b97bf3fd | 445 | msg_set_origport(rmsg, msg_destport(msg)); |
99c14593 | 446 | if (msg_short(msg)) { |
b97bf3fd | 447 | msg_set_orignode(rmsg, tipc_own_addr); |
99c14593 AS |
448 | /* leave name type & instance as zeroes */ |
449 | } else { | |
b97bf3fd | 450 | msg_set_orignode(rmsg, msg_destnode(msg)); |
99c14593 AS |
451 | msg_set_nametype(rmsg, msg_nametype(msg)); |
452 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
453 | } | |
c4307285 | 454 | msg_set_size(rmsg, data_sz + hdr_sz); |
27d7ff46 | 455 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
456 | |
457 | /* send self-abort message when rejecting on a connected port */ | |
458 | if (msg_connected(msg)) { | |
1fc54d8f | 459 | struct sk_buff *abuf = NULL; |
4323add6 | 460 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
461 | |
462 | if (p_ptr) { | |
463 | if (p_ptr->publ.connected) | |
464 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 465 | tipc_port_unlock(p_ptr); |
b97bf3fd | 466 | } |
4323add6 | 467 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
468 | } |
469 | ||
470 | /* send rejected message */ | |
471 | buf_discard(buf); | |
4323add6 | 472 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
473 | return data_sz; |
474 | } | |
475 | ||
4323add6 PL |
476 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
477 | struct iovec const *msg_sect, u32 num_sect, | |
478 | int err) | |
b97bf3fd PL |
479 | { |
480 | struct sk_buff *buf; | |
481 | int res; | |
482 | ||
c68ca7b7 | 483 | res = tipc_msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
484 | !p_ptr->user_port, &buf); |
485 | if (!buf) | |
486 | return res; | |
487 | ||
488 | return tipc_reject_msg(buf, err); | |
489 | } | |
490 | ||
491 | static void port_timeout(unsigned long ref) | |
492 | { | |
4323add6 | 493 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 494 | struct sk_buff *buf = NULL; |
b97bf3fd | 495 | |
065fd177 AS |
496 | if (!p_ptr) |
497 | return; | |
498 | ||
499 | if (!p_ptr->publ.connected) { | |
500 | tipc_port_unlock(p_ptr); | |
b97bf3fd | 501 | return; |
065fd177 | 502 | } |
b97bf3fd PL |
503 | |
504 | /* Last probe answered ? */ | |
505 | if (p_ptr->probing_state == PROBING) { | |
506 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
507 | } else { | |
508 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
509 | port_peernode(p_ptr), | |
510 | p_ptr->publ.ref, | |
511 | tipc_own_addr, | |
512 | CONN_MANAGER, | |
513 | CONN_PROBE, | |
c4307285 | 514 | TIPC_OK, |
b97bf3fd PL |
515 | port_out_seqno(p_ptr), |
516 | 0); | |
517 | port_incr_out_seqno(p_ptr); | |
518 | p_ptr->probing_state = PROBING; | |
519 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
520 | } | |
4323add6 PL |
521 | tipc_port_unlock(p_ptr); |
522 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
523 | } |
524 | ||
525 | ||
526 | static void port_handle_node_down(unsigned long ref) | |
527 | { | |
4323add6 | 528 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 529 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
530 | |
531 | if (!p_ptr) | |
532 | return; | |
533 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
534 | tipc_port_unlock(p_ptr); |
535 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
536 | } |
537 | ||
538 | ||
539 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
540 | { | |
541 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
542 | ||
543 | if (!p_ptr->publ.connected) | |
1fc54d8f | 544 | return NULL; |
b97bf3fd PL |
545 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
546 | imp++; | |
547 | return port_build_proto_msg(p_ptr->publ.ref, | |
548 | tipc_own_addr, | |
549 | port_peerport(p_ptr), | |
550 | port_peernode(p_ptr), | |
551 | imp, | |
552 | TIPC_CONN_MSG, | |
c4307285 | 553 | err, |
b97bf3fd PL |
554 | p_ptr->last_in_seqno + 1, |
555 | 0); | |
556 | } | |
557 | ||
558 | ||
559 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
560 | { | |
561 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
562 | ||
563 | if (!p_ptr->publ.connected) | |
1fc54d8f | 564 | return NULL; |
b97bf3fd PL |
565 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
566 | imp++; | |
567 | return port_build_proto_msg(port_peerport(p_ptr), | |
568 | port_peernode(p_ptr), | |
569 | p_ptr->publ.ref, | |
570 | tipc_own_addr, | |
571 | imp, | |
572 | TIPC_CONN_MSG, | |
c4307285 | 573 | err, |
b97bf3fd PL |
574 | port_out_seqno(p_ptr), |
575 | 0); | |
576 | } | |
577 | ||
4323add6 | 578 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
579 | { |
580 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 581 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 582 | u32 err = TIPC_OK; |
1fc54d8f SR |
583 | struct sk_buff *r_buf = NULL; |
584 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd PL |
585 | |
586 | msg_dbg(msg, "PORT<RECV<:"); | |
587 | ||
588 | if (!p_ptr) { | |
589 | err = TIPC_ERR_NO_PORT; | |
590 | } else if (p_ptr->publ.connected) { | |
96d841b7 AS |
591 | if ((port_peernode(p_ptr) != msg_orignode(msg)) || |
592 | (port_peerport(p_ptr) != msg_origport(msg))) { | |
b97bf3fd | 593 | err = TIPC_ERR_NO_PORT; |
96d841b7 | 594 | } else if (msg_type(msg) == CONN_ACK) { |
c4307285 | 595 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
596 | p_ptr->publ.congested && |
597 | p_ptr->wakeup; | |
598 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 599 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
600 | goto exit; |
601 | p_ptr->publ.congested = 0; | |
602 | if (!wakeup) | |
603 | goto exit; | |
604 | p_ptr->wakeup(&p_ptr->publ); | |
605 | goto exit; | |
606 | } | |
607 | } else if (p_ptr->publ.published) { | |
608 | err = TIPC_ERR_NO_PORT; | |
609 | } | |
610 | if (err) { | |
611 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
612 | msg_orignode(msg), |
613 | msg_destport(msg), | |
b97bf3fd | 614 | tipc_own_addr, |
06d82c91 | 615 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
616 | TIPC_CONN_MSG, |
617 | err, | |
618 | 0, | |
619 | 0); | |
620 | goto exit; | |
621 | } | |
622 | ||
623 | /* All is fine */ | |
624 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
625 | r_buf = port_build_proto_msg(msg_origport(msg), |
626 | msg_orignode(msg), | |
627 | msg_destport(msg), | |
628 | tipc_own_addr, | |
b97bf3fd PL |
629 | CONN_MANAGER, |
630 | CONN_PROBE_REPLY, | |
631 | TIPC_OK, | |
632 | port_out_seqno(p_ptr), | |
633 | 0); | |
634 | } | |
635 | p_ptr->probing_state = CONFIRMED; | |
636 | port_incr_out_seqno(p_ptr); | |
637 | exit: | |
638 | if (p_ptr) | |
4323add6 PL |
639 | tipc_port_unlock(p_ptr); |
640 | tipc_net_route_msg(r_buf); | |
641 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
642 | buf_discard(buf); |
643 | } | |
644 | ||
645 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
646 | { | |
c4307285 | 647 | struct publication *publ; |
b97bf3fd PL |
648 | |
649 | if (full_id) | |
c4307285 | 650 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 651 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
c4307285 | 652 | tipc_node(tipc_own_addr), p_ptr->publ.ref); |
b97bf3fd PL |
653 | else |
654 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
655 | ||
c4307285 YH |
656 | if (p_ptr->publ.connected) { |
657 | u32 dport = port_peerport(p_ptr); | |
658 | u32 destnode = port_peernode(p_ptr); | |
659 | ||
660 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
661 | tipc_zone(destnode), tipc_cluster(destnode), | |
662 | tipc_node(destnode), dport); | |
663 | if (p_ptr->publ.conn_type != 0) | |
664 | tipc_printf(buf, " via {%u,%u}", | |
665 | p_ptr->publ.conn_type, | |
666 | p_ptr->publ.conn_instance); | |
667 | } | |
668 | else if (p_ptr->publ.published) { | |
669 | tipc_printf(buf, " bound to"); | |
670 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
671 | if (publ->lower == publ->upper) |
672 | tipc_printf(buf, " {%u,%u}", publ->type, | |
673 | publ->lower); | |
674 | else | |
c4307285 | 675 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 676 | publ->lower, publ->upper); |
c4307285 YH |
677 | } |
678 | } | |
679 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
680 | } |
681 | ||
682 | #define MAX_PORT_QUERY 32768 | |
683 | ||
4323add6 | 684 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
685 | { |
686 | struct sk_buff *buf; | |
687 | struct tlv_desc *rep_tlv; | |
688 | struct print_buf pb; | |
689 | struct port *p_ptr; | |
690 | int str_len; | |
691 | ||
4323add6 | 692 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
693 | if (!buf) |
694 | return NULL; | |
695 | rep_tlv = (struct tlv_desc *)buf->data; | |
696 | ||
4323add6 PL |
697 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
698 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
699 | list_for_each_entry(p_ptr, &ports, port_list) { |
700 | spin_lock_bh(p_ptr->publ.lock); | |
701 | port_print(p_ptr, &pb, 0); | |
702 | spin_unlock_bh(p_ptr->publ.lock); | |
703 | } | |
4323add6 PL |
704 | spin_unlock_bh(&tipc_port_list_lock); |
705 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
706 | |
707 | skb_put(buf, TLV_SPACE(str_len)); | |
708 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
709 | ||
710 | return buf; | |
711 | } | |
712 | ||
713 | #if 0 | |
714 | ||
715 | #define MAX_PORT_STATS 2000 | |
716 | ||
717 | struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space) | |
718 | { | |
719 | u32 ref; | |
720 | struct port *p_ptr; | |
721 | struct sk_buff *buf; | |
722 | struct tlv_desc *rep_tlv; | |
723 | struct print_buf pb; | |
724 | int str_len; | |
725 | ||
726 | if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF)) | |
727 | return cfg_reply_error_string(TIPC_CFG_TLV_ERROR); | |
728 | ||
729 | ref = *(u32 *)TLV_DATA(req_tlv_area); | |
730 | ref = ntohl(ref); | |
731 | ||
4323add6 | 732 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
733 | if (!p_ptr) |
734 | return cfg_reply_error_string("port not found"); | |
735 | ||
4323add6 | 736 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS)); |
b97bf3fd | 737 | if (!buf) { |
4323add6 | 738 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
739 | return NULL; |
740 | } | |
741 | rep_tlv = (struct tlv_desc *)buf->data; | |
742 | ||
4323add6 | 743 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS); |
b97bf3fd PL |
744 | port_print(p_ptr, &pb, 1); |
745 | /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */ | |
4323add6 PL |
746 | tipc_port_unlock(p_ptr); |
747 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
748 | |
749 | skb_put(buf, TLV_SPACE(str_len)); | |
750 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
751 | ||
752 | return buf; | |
753 | } | |
754 | ||
755 | #endif | |
756 | ||
4323add6 | 757 | void tipc_port_reinit(void) |
b97bf3fd PL |
758 | { |
759 | struct port *p_ptr; | |
760 | struct tipc_msg *msg; | |
761 | ||
4323add6 | 762 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
763 | list_for_each_entry(p_ptr, &ports, port_list) { |
764 | msg = &p_ptr->publ.phdr; | |
765 | if (msg_orignode(msg) == tipc_own_addr) | |
766 | break; | |
6d4a6672 | 767 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
768 | msg_set_orignode(msg, tipc_own_addr); |
769 | } | |
4323add6 | 770 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
771 | } |
772 | ||
773 | ||
774 | /* | |
775 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
776 | * to the tipc_port interface. | |
777 | */ | |
778 | ||
779 | static void port_dispatcher_sigh(void *dummy) | |
780 | { | |
781 | struct sk_buff *buf; | |
782 | ||
783 | spin_lock_bh(&queue_lock); | |
784 | buf = msg_queue_head; | |
1fc54d8f | 785 | msg_queue_head = NULL; |
b97bf3fd PL |
786 | spin_unlock_bh(&queue_lock); |
787 | ||
788 | while (buf) { | |
789 | struct port *p_ptr; | |
790 | struct user_port *up_ptr; | |
791 | struct tipc_portid orig; | |
792 | struct tipc_name_seq dseq; | |
793 | void *usr_handle; | |
794 | int connected; | |
795 | int published; | |
9688243b | 796 | u32 message_type; |
b97bf3fd PL |
797 | |
798 | struct sk_buff *next = buf->next; | |
799 | struct tipc_msg *msg = buf_msg(buf); | |
800 | u32 dref = msg_destport(msg); | |
c4307285 | 801 | |
9688243b AS |
802 | message_type = msg_type(msg); |
803 | if (message_type > TIPC_DIRECT_MSG) | |
804 | goto reject; /* Unsupported message type */ | |
805 | ||
4323add6 | 806 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
807 | if (!p_ptr) |
808 | goto reject; /* Port deleted while msg in queue */ | |
809 | ||
b97bf3fd PL |
810 | orig.ref = msg_origport(msg); |
811 | orig.node = msg_orignode(msg); | |
812 | up_ptr = p_ptr->user_port; | |
813 | usr_handle = up_ptr->usr_handle; | |
814 | connected = p_ptr->publ.connected; | |
815 | published = p_ptr->publ.published; | |
816 | ||
817 | if (unlikely(msg_errcode(msg))) | |
818 | goto err; | |
819 | ||
9688243b | 820 | switch (message_type) { |
c4307285 | 821 | |
b97bf3fd PL |
822 | case TIPC_CONN_MSG:{ |
823 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
824 | u32 peer_port = port_peerport(p_ptr); | |
825 | u32 peer_node = port_peernode(p_ptr); | |
826 | ||
4cec72c8 | 827 | tipc_port_unlock(p_ptr); |
5307e469 AS |
828 | if (unlikely(!cb)) |
829 | goto reject; | |
b97bf3fd | 830 | if (unlikely(!connected)) { |
84b07c16 | 831 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 832 | goto reject; |
84b07c16 AS |
833 | } else if ((msg_origport(msg) != peer_port) || |
834 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 835 | goto reject; |
c4307285 | 836 | if (unlikely(++p_ptr->publ.conn_unacked >= |
b97bf3fd | 837 | TIPC_FLOW_CONTROL_WIN)) |
c4307285 | 838 | tipc_acknowledge(dref, |
b97bf3fd PL |
839 | p_ptr->publ.conn_unacked); |
840 | skb_pull(buf, msg_hdr_sz(msg)); | |
841 | cb(usr_handle, dref, &buf, msg_data(msg), | |
842 | msg_data_sz(msg)); | |
843 | break; | |
844 | } | |
845 | case TIPC_DIRECT_MSG:{ | |
846 | tipc_msg_event cb = up_ptr->msg_cb; | |
847 | ||
4cec72c8 | 848 | tipc_port_unlock(p_ptr); |
5307e469 | 849 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
850 | goto reject; |
851 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 852 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
853 | msg_data_sz(msg), msg_importance(msg), |
854 | &orig); | |
855 | break; | |
856 | } | |
9688243b | 857 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
858 | case TIPC_NAMED_MSG:{ |
859 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
860 | ||
4cec72c8 | 861 | tipc_port_unlock(p_ptr); |
5307e469 | 862 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
863 | goto reject; |
864 | dseq.type = msg_nametype(msg); | |
865 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
866 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
867 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 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, &dseq); | |
872 | break; | |
873 | } | |
874 | } | |
875 | if (buf) | |
876 | buf_discard(buf); | |
877 | buf = next; | |
878 | continue; | |
879 | err: | |
9688243b | 880 | switch (message_type) { |
c4307285 | 881 | |
b97bf3fd | 882 | case TIPC_CONN_MSG:{ |
c4307285 | 883 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
884 | up_ptr->conn_err_cb; |
885 | u32 peer_port = port_peerport(p_ptr); | |
886 | u32 peer_node = port_peernode(p_ptr); | |
887 | ||
4cec72c8 | 888 | tipc_port_unlock(p_ptr); |
5307e469 | 889 | if (!cb || !connected) |
b97bf3fd | 890 | break; |
5307e469 AS |
891 | if ((msg_origport(msg) != peer_port) || |
892 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
893 | break; |
894 | tipc_disconnect(dref); | |
895 | skb_pull(buf, msg_hdr_sz(msg)); | |
896 | cb(usr_handle, dref, &buf, msg_data(msg), | |
897 | msg_data_sz(msg), msg_errcode(msg)); | |
898 | break; | |
899 | } | |
900 | case TIPC_DIRECT_MSG:{ | |
901 | tipc_msg_err_event cb = up_ptr->err_cb; | |
902 | ||
4cec72c8 | 903 | tipc_port_unlock(p_ptr); |
5307e469 | 904 | if (!cb || connected) |
b97bf3fd PL |
905 | break; |
906 | skb_pull(buf, msg_hdr_sz(msg)); | |
907 | cb(usr_handle, dref, &buf, msg_data(msg), | |
908 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
909 | break; | |
910 | } | |
9688243b | 911 | case TIPC_MCAST_MSG: |
b97bf3fd | 912 | case TIPC_NAMED_MSG:{ |
c4307285 | 913 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
914 | up_ptr->named_err_cb; |
915 | ||
4cec72c8 | 916 | tipc_port_unlock(p_ptr); |
5307e469 | 917 | if (!cb || connected) |
b97bf3fd PL |
918 | break; |
919 | dseq.type = msg_nametype(msg); | |
920 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
921 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
922 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 923 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 924 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
925 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
926 | break; | |
927 | } | |
928 | } | |
929 | if (buf) | |
930 | buf_discard(buf); | |
931 | buf = next; | |
932 | continue; | |
933 | reject: | |
934 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
935 | buf = next; | |
936 | } | |
937 | } | |
938 | ||
939 | /* | |
940 | * port_dispatcher(): Dispatcher for messages destinated | |
941 | * to the tipc_port interface. Called with port locked. | |
942 | */ | |
943 | ||
944 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
945 | { | |
946 | buf->next = NULL; | |
947 | spin_lock_bh(&queue_lock); | |
948 | if (msg_queue_head) { | |
949 | msg_queue_tail->next = buf; | |
950 | msg_queue_tail = buf; | |
951 | } else { | |
952 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 953 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
954 | } |
955 | spin_unlock_bh(&queue_lock); | |
0e35fd5e | 956 | return 0; |
b97bf3fd PL |
957 | } |
958 | ||
c4307285 | 959 | /* |
b97bf3fd | 960 | * Wake up port after congestion: Called with port locked, |
c4307285 | 961 | * |
b97bf3fd PL |
962 | */ |
963 | ||
964 | static void port_wakeup_sh(unsigned long ref) | |
965 | { | |
966 | struct port *p_ptr; | |
967 | struct user_port *up_ptr; | |
1fc54d8f SR |
968 | tipc_continue_event cb = NULL; |
969 | void *uh = NULL; | |
b97bf3fd | 970 | |
4323add6 | 971 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
972 | if (p_ptr) { |
973 | up_ptr = p_ptr->user_port; | |
974 | if (up_ptr) { | |
975 | cb = up_ptr->continue_event_cb; | |
976 | uh = up_ptr->usr_handle; | |
977 | } | |
4323add6 | 978 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
979 | } |
980 | if (cb) | |
981 | cb(uh, ref); | |
982 | } | |
983 | ||
984 | ||
985 | static void port_wakeup(struct tipc_port *p_ptr) | |
986 | { | |
4323add6 | 987 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
988 | } |
989 | ||
990 | void tipc_acknowledge(u32 ref, u32 ack) | |
991 | { | |
992 | struct port *p_ptr; | |
1fc54d8f | 993 | struct sk_buff *buf = NULL; |
b97bf3fd | 994 | |
4323add6 | 995 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
996 | if (!p_ptr) |
997 | return; | |
998 | if (p_ptr->publ.connected) { | |
999 | p_ptr->publ.conn_unacked -= ack; | |
1000 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1001 | port_peernode(p_ptr), | |
1002 | ref, | |
1003 | tipc_own_addr, | |
1004 | CONN_MANAGER, | |
1005 | CONN_ACK, | |
c4307285 | 1006 | TIPC_OK, |
b97bf3fd PL |
1007 | port_out_seqno(p_ptr), |
1008 | ack); | |
1009 | } | |
4323add6 PL |
1010 | tipc_port_unlock(p_ptr); |
1011 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1012 | } |
1013 | ||
1014 | /* | |
1015 | * tipc_createport(): user level call. Will add port to | |
1016 | * registry if non-zero user_ref. | |
1017 | */ | |
1018 | ||
c4307285 YH |
1019 | int tipc_createport(u32 user_ref, |
1020 | void *usr_handle, | |
1021 | unsigned int importance, | |
1022 | tipc_msg_err_event error_cb, | |
1023 | tipc_named_msg_err_event named_error_cb, | |
1024 | tipc_conn_shutdown_event conn_error_cb, | |
1025 | tipc_msg_event msg_cb, | |
1026 | tipc_named_msg_event named_msg_cb, | |
1027 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
1028 | tipc_continue_event continue_event_cb,/* May be zero */ |
1029 | u32 *portref) | |
1030 | { | |
1031 | struct user_port *up_ptr; | |
c4307285 | 1032 | struct port *p_ptr; |
b97bf3fd | 1033 | |
0da974f4 | 1034 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 1035 | if (!up_ptr) { |
a75bf874 | 1036 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
1037 | return -ENOMEM; |
1038 | } | |
0ea52241 AS |
1039 | p_ptr = (struct port *)tipc_createport_raw(NULL, port_dispatcher, |
1040 | port_wakeup, importance); | |
1041 | if (!p_ptr) { | |
b97bf3fd PL |
1042 | kfree(up_ptr); |
1043 | return -ENOMEM; | |
1044 | } | |
1045 | ||
1046 | p_ptr->user_port = up_ptr; | |
1047 | up_ptr->user_ref = user_ref; | |
1048 | up_ptr->usr_handle = usr_handle; | |
1049 | up_ptr->ref = p_ptr->publ.ref; | |
1050 | up_ptr->err_cb = error_cb; | |
1051 | up_ptr->named_err_cb = named_error_cb; | |
1052 | up_ptr->conn_err_cb = conn_error_cb; | |
1053 | up_ptr->msg_cb = msg_cb; | |
1054 | up_ptr->named_msg_cb = named_msg_cb; | |
1055 | up_ptr->conn_msg_cb = conn_msg_cb; | |
1056 | up_ptr->continue_event_cb = continue_event_cb; | |
1057 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 1058 | tipc_reg_add_port(up_ptr); |
b97bf3fd | 1059 | *portref = p_ptr->publ.ref; |
4323add6 | 1060 | tipc_port_unlock(p_ptr); |
0e35fd5e | 1061 | return 0; |
b97bf3fd PL |
1062 | } |
1063 | ||
1064 | int tipc_ownidentity(u32 ref, struct tipc_portid *id) | |
1065 | { | |
1066 | id->ref = ref; | |
1067 | id->node = tipc_own_addr; | |
0e35fd5e | 1068 | return 0; |
b97bf3fd PL |
1069 | } |
1070 | ||
1071 | int tipc_portimportance(u32 ref, unsigned int *importance) | |
1072 | { | |
1073 | struct port *p_ptr; | |
c4307285 | 1074 | |
4323add6 | 1075 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1076 | if (!p_ptr) |
1077 | return -EINVAL; | |
1078 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
4cec72c8 | 1079 | tipc_port_unlock(p_ptr); |
0e35fd5e | 1080 | return 0; |
b97bf3fd PL |
1081 | } |
1082 | ||
1083 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
1084 | { | |
1085 | struct port *p_ptr; | |
1086 | ||
1087 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1088 | return -EINVAL; | |
1089 | ||
4323add6 | 1090 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1091 | if (!p_ptr) |
1092 | return -EINVAL; | |
1093 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
4cec72c8 | 1094 | tipc_port_unlock(p_ptr); |
0e35fd5e | 1095 | return 0; |
b97bf3fd PL |
1096 | } |
1097 | ||
1098 | ||
1099 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1100 | { | |
1101 | struct port *p_ptr; | |
1102 | struct publication *publ; | |
1103 | u32 key; | |
1104 | int res = -EINVAL; | |
1105 | ||
4323add6 | 1106 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
1107 | if (!p_ptr) |
1108 | return -EINVAL; | |
1109 | ||
b97bf3fd PL |
1110 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1111 | "lower = %u, upper = %u\n", | |
1112 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
b97bf3fd PL |
1113 | if (p_ptr->publ.connected) |
1114 | goto exit; | |
1115 | if (seq->lower > seq->upper) | |
1116 | goto exit; | |
1117 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1118 | goto exit; | |
1119 | key = ref + p_ptr->pub_count + 1; | |
1120 | if (key == ref) { | |
1121 | res = -EADDRINUSE; | |
1122 | goto exit; | |
1123 | } | |
4323add6 PL |
1124 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1125 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1126 | if (publ) { |
1127 | list_add(&publ->pport_list, &p_ptr->publications); | |
1128 | p_ptr->pub_count++; | |
1129 | p_ptr->publ.published = 1; | |
0e35fd5e | 1130 | res = 0; |
b97bf3fd PL |
1131 | } |
1132 | exit: | |
4323add6 | 1133 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1134 | return res; |
1135 | } | |
1136 | ||
1137 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1138 | { | |
1139 | struct port *p_ptr; | |
1140 | struct publication *publ; | |
1141 | struct publication *tpubl; | |
1142 | int res = -EINVAL; | |
c4307285 | 1143 | |
4323add6 | 1144 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1145 | if (!p_ptr) |
1146 | return -EINVAL; | |
b97bf3fd | 1147 | if (!seq) { |
c4307285 | 1148 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1149 | &p_ptr->publications, pport_list) { |
c4307285 | 1150 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1151 | publ->ref, publ->key); |
b97bf3fd | 1152 | } |
0e35fd5e | 1153 | res = 0; |
b97bf3fd | 1154 | } else { |
c4307285 | 1155 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1156 | &p_ptr->publications, pport_list) { |
1157 | if (publ->scope != scope) | |
1158 | continue; | |
1159 | if (publ->type != seq->type) | |
1160 | continue; | |
1161 | if (publ->lower != seq->lower) | |
1162 | continue; | |
1163 | if (publ->upper != seq->upper) | |
1164 | break; | |
c4307285 | 1165 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1166 | publ->ref, publ->key); |
0e35fd5e | 1167 | res = 0; |
b97bf3fd PL |
1168 | break; |
1169 | } | |
1170 | } | |
1171 | if (list_empty(&p_ptr->publications)) | |
1172 | p_ptr->publ.published = 0; | |
4323add6 | 1173 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1174 | return res; |
1175 | } | |
1176 | ||
1177 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1178 | { | |
1179 | struct port *p_ptr; | |
1180 | struct tipc_msg *msg; | |
1181 | int res = -EINVAL; | |
1182 | ||
4323add6 | 1183 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1184 | if (!p_ptr) |
1185 | return -EINVAL; | |
1186 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1187 | goto exit; | |
1188 | if (!peer->ref) | |
1189 | goto exit; | |
1190 | ||
1191 | msg = &p_ptr->publ.phdr; | |
1192 | msg_set_destnode(msg, peer->node); | |
1193 | msg_set_destport(msg, peer->ref); | |
1194 | msg_set_orignode(msg, tipc_own_addr); | |
1195 | msg_set_origport(msg, p_ptr->publ.ref); | |
1196 | msg_set_transp_seqno(msg, 42); | |
1197 | msg_set_type(msg, TIPC_CONN_MSG); | |
1198 | if (!may_route(peer->node)) | |
1199 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1200 | else | |
1201 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1202 | ||
1203 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1204 | p_ptr->probing_state = CONFIRMED; | |
1205 | p_ptr->publ.connected = 1; | |
1206 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1207 | ||
4323add6 | 1208 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1209 | (void *)(unsigned long)ref, |
b97bf3fd | 1210 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 1211 | res = 0; |
b97bf3fd | 1212 | exit: |
4323add6 | 1213 | tipc_port_unlock(p_ptr); |
05646c91 | 1214 | p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1215 | return res; |
1216 | } | |
1217 | ||
0c3141e9 AS |
1218 | /** |
1219 | * tipc_disconnect_port - disconnect port from peer | |
1220 | * | |
1221 | * Port must be locked. | |
1222 | */ | |
1223 | ||
1224 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1225 | { | |
1226 | int res; | |
1227 | ||
1228 | if (tp_ptr->connected) { | |
1229 | tp_ptr->connected = 0; | |
1230 | /* let timer expire on it's own to avoid deadlock! */ | |
1231 | tipc_nodesub_unsubscribe( | |
1232 | &((struct port *)tp_ptr)->subscription); | |
0e35fd5e | 1233 | res = 0; |
0c3141e9 AS |
1234 | } else { |
1235 | res = -ENOTCONN; | |
1236 | } | |
1237 | return res; | |
1238 | } | |
1239 | ||
b97bf3fd PL |
1240 | /* |
1241 | * tipc_disconnect(): Disconnect port form peer. | |
1242 | * This is a node local operation. | |
1243 | */ | |
1244 | ||
1245 | int tipc_disconnect(u32 ref) | |
1246 | { | |
1247 | struct port *p_ptr; | |
0c3141e9 | 1248 | int res; |
b97bf3fd | 1249 | |
4323add6 | 1250 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1251 | if (!p_ptr) |
1252 | return -EINVAL; | |
0c3141e9 | 1253 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1254 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1255 | return res; |
1256 | } | |
1257 | ||
1258 | /* | |
1259 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1260 | */ | |
1261 | int tipc_shutdown(u32 ref) | |
1262 | { | |
1263 | struct port *p_ptr; | |
1fc54d8f | 1264 | struct sk_buff *buf = NULL; |
b97bf3fd | 1265 | |
4323add6 | 1266 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1267 | if (!p_ptr) |
1268 | return -EINVAL; | |
1269 | ||
1270 | if (p_ptr->publ.connected) { | |
1271 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1272 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1273 | imp++; | |
1274 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1275 | port_peernode(p_ptr), | |
1276 | ref, | |
1277 | tipc_own_addr, | |
1278 | imp, | |
1279 | TIPC_CONN_MSG, | |
c4307285 | 1280 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1281 | port_out_seqno(p_ptr), |
1282 | 0); | |
1283 | } | |
4323add6 PL |
1284 | tipc_port_unlock(p_ptr); |
1285 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1286 | return tipc_disconnect(ref); |
1287 | } | |
1288 | ||
1289 | int tipc_isconnected(u32 ref, int *isconnected) | |
1290 | { | |
1291 | struct port *p_ptr; | |
c4307285 | 1292 | |
4323add6 | 1293 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1294 | if (!p_ptr) |
1295 | return -EINVAL; | |
1296 | *isconnected = p_ptr->publ.connected; | |
4323add6 | 1297 | tipc_port_unlock(p_ptr); |
0e35fd5e | 1298 | return 0; |
b97bf3fd PL |
1299 | } |
1300 | ||
1301 | int tipc_peer(u32 ref, struct tipc_portid *peer) | |
1302 | { | |
1303 | struct port *p_ptr; | |
1304 | int res; | |
c4307285 | 1305 | |
4323add6 | 1306 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1307 | if (!p_ptr) |
1308 | return -EINVAL; | |
1309 | if (p_ptr->publ.connected) { | |
1310 | peer->ref = port_peerport(p_ptr); | |
1311 | peer->node = port_peernode(p_ptr); | |
0e35fd5e | 1312 | res = 0; |
b97bf3fd PL |
1313 | } else |
1314 | res = -ENOTCONN; | |
4323add6 | 1315 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1316 | return res; |
1317 | } | |
1318 | ||
1319 | int tipc_ref_valid(u32 ref) | |
1320 | { | |
1321 | /* Works irrespective of type */ | |
4323add6 | 1322 | return !!tipc_ref_deref(ref); |
b97bf3fd PL |
1323 | } |
1324 | ||
1325 | ||
1326 | /* | |
4323add6 | 1327 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1328 | * message for this node. |
1329 | */ | |
1330 | ||
4323add6 | 1331 | int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
b97bf3fd PL |
1332 | struct iovec const *msg_sect) |
1333 | { | |
1334 | struct sk_buff *buf; | |
1335 | int res; | |
c4307285 | 1336 | |
c68ca7b7 | 1337 | res = tipc_msg_build(&sender->publ.phdr, msg_sect, num_sect, |
b97bf3fd PL |
1338 | MAX_MSG_SIZE, !sender->user_port, &buf); |
1339 | if (likely(buf)) | |
4323add6 | 1340 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1341 | return res; |
1342 | } | |
1343 | ||
1344 | /** | |
1345 | * tipc_send - send message sections on connection | |
1346 | */ | |
1347 | ||
1348 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1349 | { | |
1350 | struct port *p_ptr; | |
1351 | u32 destnode; | |
1352 | int res; | |
1353 | ||
4323add6 | 1354 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1355 | if (!p_ptr || !p_ptr->publ.connected) |
1356 | return -EINVAL; | |
1357 | ||
1358 | p_ptr->publ.congested = 1; | |
4323add6 | 1359 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1360 | destnode = port_peernode(p_ptr); |
1361 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1362 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1363 | destnode); | |
b97bf3fd | 1364 | else |
4323add6 | 1365 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1366 | |
1367 | if (likely(res != -ELINKCONG)) { | |
1368 | port_incr_out_seqno(p_ptr); | |
1369 | p_ptr->publ.congested = 0; | |
1370 | p_ptr->sent++; | |
1371 | return res; | |
1372 | } | |
1373 | } | |
1374 | if (port_unreliable(p_ptr)) { | |
1375 | p_ptr->publ.congested = 0; | |
1376 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1377 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1378 | } |
1379 | return -ELINKCONG; | |
1380 | } | |
1381 | ||
c4307285 | 1382 | /** |
b97bf3fd PL |
1383 | * tipc_send_buf - send message buffer on connection |
1384 | */ | |
1385 | ||
1386 | int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz) | |
1387 | { | |
1388 | struct port *p_ptr; | |
1389 | struct tipc_msg *msg; | |
1390 | u32 destnode; | |
1391 | u32 hsz; | |
1392 | u32 sz; | |
1393 | u32 res; | |
c4307285 | 1394 | |
4323add6 | 1395 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1396 | if (!p_ptr || !p_ptr->publ.connected) |
1397 | return -EINVAL; | |
1398 | ||
1399 | msg = &p_ptr->publ.phdr; | |
1400 | hsz = msg_hdr_sz(msg); | |
1401 | sz = hsz + dsz; | |
1402 | msg_set_size(msg, sz); | |
1403 | if (skb_cow(buf, hsz)) | |
1404 | return -ENOMEM; | |
1405 | ||
1406 | skb_push(buf, hsz); | |
27d7ff46 | 1407 | skb_copy_to_linear_data(buf, msg, hsz); |
b97bf3fd PL |
1408 | destnode = msg_destnode(msg); |
1409 | p_ptr->publ.congested = 1; | |
4323add6 | 1410 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1411 | if (likely(destnode != tipc_own_addr)) |
1412 | res = tipc_send_buf_fast(buf, destnode); | |
1413 | else { | |
4323add6 | 1414 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1415 | res = sz; |
1416 | } | |
1417 | if (likely(res != -ELINKCONG)) { | |
1418 | port_incr_out_seqno(p_ptr); | |
1419 | p_ptr->sent++; | |
1420 | p_ptr->publ.congested = 0; | |
1421 | return res; | |
1422 | } | |
1423 | } | |
1424 | if (port_unreliable(p_ptr)) { | |
1425 | p_ptr->publ.congested = 0; | |
1426 | return dsz; | |
1427 | } | |
1428 | return -ELINKCONG; | |
1429 | } | |
1430 | ||
1431 | /** | |
1432 | * tipc_forward2name - forward message sections to port name | |
1433 | */ | |
1434 | ||
c4307285 YH |
1435 | int tipc_forward2name(u32 ref, |
1436 | struct tipc_name const *name, | |
b97bf3fd | 1437 | u32 domain, |
c4307285 | 1438 | u32 num_sect, |
b97bf3fd | 1439 | struct iovec const *msg_sect, |
c4307285 | 1440 | struct tipc_portid const *orig, |
b97bf3fd PL |
1441 | unsigned int importance) |
1442 | { | |
1443 | struct port *p_ptr; | |
1444 | struct tipc_msg *msg; | |
1445 | u32 destnode = domain; | |
9ccc2eb4 | 1446 | u32 destport; |
b97bf3fd PL |
1447 | int res; |
1448 | ||
4323add6 | 1449 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1450 | if (!p_ptr || p_ptr->publ.connected) |
1451 | return -EINVAL; | |
1452 | ||
1453 | msg = &p_ptr->publ.phdr; | |
1454 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1455 | msg_set_orignode(msg, orig->node); | |
1456 | msg_set_origport(msg, orig->ref); | |
1457 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1458 | msg_set_nametype(msg, name->type); | |
1459 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 1460 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
b97bf3fd PL |
1461 | if (importance <= TIPC_CRITICAL_IMPORTANCE) |
1462 | msg_set_importance(msg,importance); | |
4323add6 | 1463 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1464 | msg_set_destnode(msg, destnode); |
1465 | msg_set_destport(msg, destport); | |
1466 | ||
1467 | if (likely(destport || destnode)) { | |
1468 | p_ptr->sent++; | |
1469 | if (likely(destnode == tipc_own_addr)) | |
4323add6 | 1470 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
c4307285 | 1471 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
4323add6 | 1472 | destnode); |
b97bf3fd PL |
1473 | if (likely(res != -ELINKCONG)) |
1474 | return res; | |
1475 | if (port_unreliable(p_ptr)) { | |
1476 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1477 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1478 | } |
1479 | return -ELINKCONG; | |
1480 | } | |
c4307285 | 1481 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1482 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1483 | } |
1484 | ||
1485 | /** | |
1486 | * tipc_send2name - send message sections to port name | |
1487 | */ | |
1488 | ||
c4307285 | 1489 | int tipc_send2name(u32 ref, |
b97bf3fd | 1490 | struct tipc_name const *name, |
c4307285 YH |
1491 | unsigned int domain, |
1492 | unsigned int num_sect, | |
b97bf3fd PL |
1493 | struct iovec const *msg_sect) |
1494 | { | |
1495 | struct tipc_portid orig; | |
1496 | ||
1497 | orig.ref = ref; | |
1498 | orig.node = tipc_own_addr; | |
1499 | return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig, | |
1500 | TIPC_PORT_IMPORTANCE); | |
1501 | } | |
1502 | ||
c4307285 | 1503 | /** |
b97bf3fd PL |
1504 | * tipc_forward_buf2name - forward message buffer to port name |
1505 | */ | |
1506 | ||
1507 | int tipc_forward_buf2name(u32 ref, | |
1508 | struct tipc_name const *name, | |
1509 | u32 domain, | |
1510 | struct sk_buff *buf, | |
1511 | unsigned int dsz, | |
1512 | struct tipc_portid const *orig, | |
1513 | unsigned int importance) | |
1514 | { | |
1515 | struct port *p_ptr; | |
1516 | struct tipc_msg *msg; | |
1517 | u32 destnode = domain; | |
9ccc2eb4 | 1518 | u32 destport; |
b97bf3fd PL |
1519 | int res; |
1520 | ||
4323add6 | 1521 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1522 | if (!p_ptr || p_ptr->publ.connected) |
1523 | return -EINVAL; | |
1524 | ||
1525 | msg = &p_ptr->publ.phdr; | |
1526 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1527 | msg_set_importance(msg, importance); | |
1528 | msg_set_type(msg, TIPC_NAMED_MSG); | |
1529 | msg_set_orignode(msg, orig->node); | |
1530 | msg_set_origport(msg, orig->ref); | |
1531 | msg_set_nametype(msg, name->type); | |
1532 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 1533 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
b97bf3fd PL |
1534 | msg_set_hdr_sz(msg, LONG_H_SIZE); |
1535 | msg_set_size(msg, LONG_H_SIZE + dsz); | |
4323add6 | 1536 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1537 | msg_set_destnode(msg, destnode); |
1538 | msg_set_destport(msg, destport); | |
1539 | msg_dbg(msg, "forw2name ==> "); | |
1540 | if (skb_cow(buf, LONG_H_SIZE)) | |
1541 | return -ENOMEM; | |
1542 | skb_push(buf, LONG_H_SIZE); | |
27d7ff46 | 1543 | skb_copy_to_linear_data(buf, msg, LONG_H_SIZE); |
b97bf3fd PL |
1544 | msg_dbg(buf_msg(buf),"PREP:"); |
1545 | if (likely(destport || destnode)) { | |
1546 | p_ptr->sent++; | |
1547 | if (destnode == tipc_own_addr) | |
4323add6 | 1548 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1549 | res = tipc_send_buf_fast(buf, destnode); |
1550 | if (likely(res != -ELINKCONG)) | |
1551 | return res; | |
1552 | if (port_unreliable(p_ptr)) | |
1553 | return dsz; | |
1554 | return -ELINKCONG; | |
1555 | } | |
1556 | return tipc_reject_msg(buf, TIPC_ERR_NO_NAME); | |
1557 | } | |
1558 | ||
c4307285 | 1559 | /** |
b97bf3fd PL |
1560 | * tipc_send_buf2name - send message buffer to port name |
1561 | */ | |
1562 | ||
c4307285 YH |
1563 | int tipc_send_buf2name(u32 ref, |
1564 | struct tipc_name const *dest, | |
b97bf3fd | 1565 | u32 domain, |
c4307285 | 1566 | struct sk_buff *buf, |
b97bf3fd PL |
1567 | unsigned int dsz) |
1568 | { | |
1569 | struct tipc_portid orig; | |
1570 | ||
1571 | orig.ref = ref; | |
1572 | orig.node = tipc_own_addr; | |
1573 | return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig, | |
1574 | TIPC_PORT_IMPORTANCE); | |
1575 | } | |
1576 | ||
c4307285 | 1577 | /** |
b97bf3fd PL |
1578 | * tipc_forward2port - forward message sections to port identity |
1579 | */ | |
1580 | ||
1581 | int tipc_forward2port(u32 ref, | |
1582 | struct tipc_portid const *dest, | |
c4307285 | 1583 | unsigned int num_sect, |
b97bf3fd | 1584 | struct iovec const *msg_sect, |
c4307285 | 1585 | struct tipc_portid const *orig, |
b97bf3fd PL |
1586 | unsigned int importance) |
1587 | { | |
1588 | struct port *p_ptr; | |
1589 | struct tipc_msg *msg; | |
1590 | int res; | |
1591 | ||
4323add6 | 1592 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1593 | if (!p_ptr || p_ptr->publ.connected) |
1594 | return -EINVAL; | |
1595 | ||
1596 | msg = &p_ptr->publ.phdr; | |
1597 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1598 | msg_set_orignode(msg, orig->node); | |
1599 | msg_set_origport(msg, orig->ref); | |
1600 | msg_set_destnode(msg, dest->node); | |
1601 | msg_set_destport(msg, dest->ref); | |
1602 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1603 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1604 | msg_set_importance(msg, importance); | |
1605 | p_ptr->sent++; | |
1606 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1607 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1608 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1609 | if (likely(res != -ELINKCONG)) |
1610 | return res; | |
1611 | if (port_unreliable(p_ptr)) { | |
1612 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1613 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1614 | } |
1615 | return -ELINKCONG; | |
1616 | } | |
1617 | ||
c4307285 YH |
1618 | /** |
1619 | * tipc_send2port - send message sections to port identity | |
b97bf3fd PL |
1620 | */ |
1621 | ||
c4307285 | 1622 | int tipc_send2port(u32 ref, |
b97bf3fd | 1623 | struct tipc_portid const *dest, |
c4307285 | 1624 | unsigned int num_sect, |
b97bf3fd PL |
1625 | struct iovec const *msg_sect) |
1626 | { | |
1627 | struct tipc_portid orig; | |
1628 | ||
1629 | orig.ref = ref; | |
1630 | orig.node = tipc_own_addr; | |
c4307285 | 1631 | return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig, |
b97bf3fd PL |
1632 | TIPC_PORT_IMPORTANCE); |
1633 | } | |
1634 | ||
c4307285 | 1635 | /** |
b97bf3fd PL |
1636 | * tipc_forward_buf2port - forward message buffer to port identity |
1637 | */ | |
1638 | int tipc_forward_buf2port(u32 ref, | |
1639 | struct tipc_portid const *dest, | |
1640 | struct sk_buff *buf, | |
1641 | unsigned int dsz, | |
1642 | struct tipc_portid const *orig, | |
1643 | unsigned int importance) | |
1644 | { | |
1645 | struct port *p_ptr; | |
1646 | struct tipc_msg *msg; | |
1647 | int res; | |
1648 | ||
4323add6 | 1649 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1650 | if (!p_ptr || p_ptr->publ.connected) |
1651 | return -EINVAL; | |
1652 | ||
1653 | msg = &p_ptr->publ.phdr; | |
1654 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
1655 | msg_set_orignode(msg, orig->node); | |
1656 | msg_set_origport(msg, orig->ref); | |
1657 | msg_set_destnode(msg, dest->node); | |
1658 | msg_set_destport(msg, dest->ref); | |
1659 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
1660 | if (importance <= TIPC_CRITICAL_IMPORTANCE) | |
1661 | msg_set_importance(msg, importance); | |
1662 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); | |
1663 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1664 | return -ENOMEM; | |
1665 | ||
1666 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1667 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
b97bf3fd PL |
1668 | msg_dbg(msg, "buf2port: "); |
1669 | p_ptr->sent++; | |
1670 | if (dest->node == tipc_own_addr) | |
4323add6 | 1671 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1672 | res = tipc_send_buf_fast(buf, dest->node); |
1673 | if (likely(res != -ELINKCONG)) | |
1674 | return res; | |
1675 | if (port_unreliable(p_ptr)) | |
1676 | return dsz; | |
1677 | return -ELINKCONG; | |
1678 | } | |
1679 | ||
c4307285 | 1680 | /** |
b97bf3fd PL |
1681 | * tipc_send_buf2port - send message buffer to port identity |
1682 | */ | |
1683 | ||
c4307285 | 1684 | int tipc_send_buf2port(u32 ref, |
b97bf3fd | 1685 | struct tipc_portid const *dest, |
c4307285 | 1686 | struct sk_buff *buf, |
b97bf3fd PL |
1687 | unsigned int dsz) |
1688 | { | |
1689 | struct tipc_portid orig; | |
1690 | ||
1691 | orig.ref = ref; | |
1692 | orig.node = tipc_own_addr; | |
c4307285 | 1693 | return tipc_forward_buf2port(ref, dest, buf, dsz, &orig, |
b97bf3fd PL |
1694 | TIPC_PORT_IMPORTANCE); |
1695 | } | |
1696 |