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" | |
b97bf3fd | 39 | #include "port.h" |
b97bf3fd | 40 | #include "name_table.h" |
b97bf3fd PL |
41 | |
42 | /* Connection management: */ | |
43 | #define PROBING_INTERVAL 3600000 /* [ms] => 1 h */ | |
44 | #define CONFIRMED 0 | |
45 | #define PROBING 1 | |
46 | ||
47 | #define MAX_REJECT_SIZE 1024 | |
48 | ||
1fc54d8f SR |
49 | static struct sk_buff *msg_queue_head = NULL; |
50 | static struct sk_buff *msg_queue_tail = NULL; | |
b97bf3fd | 51 | |
34af946a IM |
52 | DEFINE_SPINLOCK(tipc_port_list_lock); |
53 | static DEFINE_SPINLOCK(queue_lock); | |
b97bf3fd | 54 | |
4323add6 | 55 | static LIST_HEAD(ports); |
b97bf3fd PL |
56 | static void port_handle_node_down(unsigned long ref); |
57 | static struct sk_buff* port_build_self_abort_msg(struct port *,u32 err); | |
58 | static struct sk_buff* port_build_peer_abort_msg(struct port *,u32 err); | |
59 | static void port_timeout(unsigned long ref); | |
60 | ||
61 | ||
05790c64 | 62 | static u32 port_peernode(struct port *p_ptr) |
b97bf3fd PL |
63 | { |
64 | return msg_destnode(&p_ptr->publ.phdr); | |
65 | } | |
66 | ||
05790c64 | 67 | static u32 port_peerport(struct port *p_ptr) |
b97bf3fd PL |
68 | { |
69 | return msg_destport(&p_ptr->publ.phdr); | |
70 | } | |
71 | ||
05790c64 | 72 | static u32 port_out_seqno(struct port *p_ptr) |
b97bf3fd PL |
73 | { |
74 | return msg_transp_seqno(&p_ptr->publ.phdr); | |
75 | } | |
76 | ||
05790c64 | 77 | static void port_incr_out_seqno(struct port *p_ptr) |
b97bf3fd PL |
78 | { |
79 | struct tipc_msg *m = &p_ptr->publ.phdr; | |
80 | ||
81 | if (likely(!msg_routed(m))) | |
82 | return; | |
83 | msg_set_transp_seqno(m, (msg_transp_seqno(m) + 1)); | |
84 | } | |
85 | ||
86 | /** | |
87 | * tipc_multicast - send a multicast message to local and remote destinations | |
88 | */ | |
89 | ||
38f232ea | 90 | int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, |
b97bf3fd PL |
91 | u32 num_sect, struct iovec const *msg_sect) |
92 | { | |
93 | struct tipc_msg *hdr; | |
94 | struct sk_buff *buf; | |
95 | struct sk_buff *ibuf = NULL; | |
96 | struct port_list dports = {0, NULL, }; | |
4323add6 | 97 | struct port *oport = tipc_port_deref(ref); |
b97bf3fd PL |
98 | int ext_targets; |
99 | int res; | |
100 | ||
101 | if (unlikely(!oport)) | |
102 | return -EINVAL; | |
103 | ||
104 | /* Create multicast message */ | |
105 | ||
106 | hdr = &oport->publ.phdr; | |
107 | msg_set_type(hdr, TIPC_MCAST_MSG); | |
108 | msg_set_nametype(hdr, seq->type); | |
109 | msg_set_namelower(hdr, seq->lower); | |
110 | msg_set_nameupper(hdr, seq->upper); | |
111 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | |
c68ca7b7 | 112 | res = tipc_msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
113 | !oport->user_port, &buf); |
114 | if (unlikely(!buf)) | |
115 | return res; | |
116 | ||
117 | /* Figure out where to send multicast message */ | |
118 | ||
4323add6 PL |
119 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
120 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
121 | |
122 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
123 | |
124 | if (ext_targets) { | |
125 | if (dports.count != 0) { | |
126 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
127 | if (ibuf == NULL) { | |
4323add6 | 128 | tipc_port_list_free(&dports); |
b97bf3fd PL |
129 | buf_discard(buf); |
130 | return -ENOMEM; | |
131 | } | |
132 | } | |
4323add6 | 133 | res = tipc_bclink_send_msg(buf); |
b97bf3fd PL |
134 | if ((res < 0) && (dports.count != 0)) { |
135 | buf_discard(ibuf); | |
136 | } | |
137 | } else { | |
138 | ibuf = buf; | |
139 | } | |
140 | ||
141 | if (res >= 0) { | |
142 | if (ibuf) | |
4323add6 | 143 | tipc_port_recv_mcast(ibuf, &dports); |
b97bf3fd | 144 | } else { |
4323add6 | 145 | tipc_port_list_free(&dports); |
b97bf3fd PL |
146 | } |
147 | return res; | |
148 | } | |
149 | ||
150 | /** | |
4323add6 | 151 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
c4307285 | 152 | * |
b97bf3fd PL |
153 | * If there is no port list, perform a lookup to create one |
154 | */ | |
155 | ||
4323add6 | 156 | void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp) |
b97bf3fd PL |
157 | { |
158 | struct tipc_msg* msg; | |
159 | struct port_list dports = {0, NULL, }; | |
160 | struct port_list *item = dp; | |
161 | int cnt = 0; | |
162 | ||
b97bf3fd PL |
163 | msg = buf_msg(buf); |
164 | ||
165 | /* Create destination port list, if one wasn't supplied */ | |
166 | ||
167 | if (dp == NULL) { | |
4323add6 | 168 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
169 | msg_namelower(msg), |
170 | msg_nameupper(msg), | |
171 | TIPC_CLUSTER_SCOPE, | |
172 | &dports); | |
173 | item = dp = &dports; | |
174 | } | |
175 | ||
176 | /* Deliver a copy of message to each destination port */ | |
177 | ||
178 | if (dp->count != 0) { | |
179 | if (dp->count == 1) { | |
180 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
181 | tipc_port_recv_msg(buf); |
182 | tipc_port_list_free(dp); | |
b97bf3fd PL |
183 | return; |
184 | } | |
185 | for (; cnt < dp->count; cnt++) { | |
186 | int index = cnt % PLSIZE; | |
187 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
188 | ||
189 | if (b == NULL) { | |
a10bd924 | 190 | warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
191 | goto exit; |
192 | } | |
193 | if ((index == 0) && (cnt != 0)) { | |
194 | item = item->next; | |
195 | } | |
196 | msg_set_destport(buf_msg(b),item->ports[index]); | |
4323add6 | 197 | tipc_port_recv_msg(b); |
b97bf3fd PL |
198 | } |
199 | } | |
200 | exit: | |
201 | buf_discard(buf); | |
4323add6 | 202 | tipc_port_list_free(dp); |
b97bf3fd PL |
203 | } |
204 | ||
205 | /** | |
7ef43eba | 206 | * tipc_createport_raw - create a generic TIPC port |
c4307285 | 207 | * |
0ea52241 | 208 | * Returns pointer to (locked) TIPC port, or NULL if unable to create it |
b97bf3fd PL |
209 | */ |
210 | ||
0ea52241 | 211 | struct tipc_port *tipc_createport_raw(void *usr_handle, |
b97bf3fd PL |
212 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), |
213 | void (*wakeup)(struct tipc_port *), | |
0ea52241 | 214 | const u32 importance) |
b97bf3fd PL |
215 | { |
216 | struct port *p_ptr; | |
217 | struct tipc_msg *msg; | |
218 | u32 ref; | |
219 | ||
0da974f4 | 220 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 AS |
221 | if (!p_ptr) { |
222 | warn("Port creation failed, no memory\n"); | |
0ea52241 | 223 | return NULL; |
b97bf3fd | 224 | } |
4323add6 | 225 | ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock); |
b97bf3fd | 226 | if (!ref) { |
a10bd924 | 227 | warn("Port creation failed, reference table exhausted\n"); |
b97bf3fd | 228 | kfree(p_ptr); |
0ea52241 | 229 | return NULL; |
b97bf3fd PL |
230 | } |
231 | ||
05646c91 AS |
232 | p_ptr->publ.usr_handle = usr_handle; |
233 | p_ptr->publ.max_pkt = MAX_PKT_DEFAULT; | |
b97bf3fd PL |
234 | p_ptr->publ.ref = ref; |
235 | msg = &p_ptr->publ.phdr; | |
c68ca7b7 | 236 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, LONG_H_SIZE, 0); |
b97bf3fd | 237 | msg_set_origport(msg, ref); |
b97bf3fd PL |
238 | p_ptr->last_in_seqno = 41; |
239 | p_ptr->sent = 1; | |
b97bf3fd PL |
240 | INIT_LIST_HEAD(&p_ptr->wait_list); |
241 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd PL |
242 | p_ptr->dispatcher = dispatcher; |
243 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 244 | p_ptr->user_port = NULL; |
b97bf3fd | 245 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 246 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
247 | INIT_LIST_HEAD(&p_ptr->publications); |
248 | INIT_LIST_HEAD(&p_ptr->port_list); | |
249 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 | 250 | spin_unlock_bh(&tipc_port_list_lock); |
0ea52241 | 251 | return &(p_ptr->publ); |
b97bf3fd PL |
252 | } |
253 | ||
254 | int tipc_deleteport(u32 ref) | |
255 | { | |
256 | struct port *p_ptr; | |
1fc54d8f | 257 | struct sk_buff *buf = NULL; |
b97bf3fd | 258 | |
1fc54d8f | 259 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 260 | p_ptr = tipc_port_lock(ref); |
c4307285 | 261 | if (!p_ptr) |
b97bf3fd PL |
262 | return -EINVAL; |
263 | ||
4323add6 PL |
264 | tipc_ref_discard(ref); |
265 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
266 | |
267 | k_cancel_timer(&p_ptr->timer); | |
268 | if (p_ptr->publ.connected) { | |
269 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
4323add6 | 270 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
271 | } |
272 | if (p_ptr->user_port) { | |
b97bf3fd PL |
273 | kfree(p_ptr->user_port); |
274 | } | |
275 | ||
4323add6 | 276 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
277 | list_del(&p_ptr->port_list); |
278 | list_del(&p_ptr->wait_list); | |
4323add6 | 279 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
280 | k_term_timer(&p_ptr->timer); |
281 | kfree(p_ptr); | |
4323add6 | 282 | tipc_net_route_msg(buf); |
0e35fd5e | 283 | return 0; |
b97bf3fd PL |
284 | } |
285 | ||
05790c64 | 286 | static int port_unreliable(struct port *p_ptr) |
b97bf3fd PL |
287 | { |
288 | return msg_src_droppable(&p_ptr->publ.phdr); | |
289 | } | |
290 | ||
291 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
292 | { | |
293 | struct port *p_ptr; | |
c4307285 | 294 | |
4323add6 | 295 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
296 | if (!p_ptr) |
297 | return -EINVAL; | |
298 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 299 | tipc_port_unlock(p_ptr); |
0e35fd5e | 300 | return 0; |
b97bf3fd PL |
301 | } |
302 | ||
303 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
304 | { | |
305 | struct port *p_ptr; | |
c4307285 | 306 | |
4323add6 | 307 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
308 | if (!p_ptr) |
309 | return -EINVAL; | |
310 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | |
4323add6 | 311 | tipc_port_unlock(p_ptr); |
0e35fd5e | 312 | return 0; |
b97bf3fd PL |
313 | } |
314 | ||
05790c64 | 315 | static int port_unreturnable(struct port *p_ptr) |
b97bf3fd PL |
316 | { |
317 | return msg_dest_droppable(&p_ptr->publ.phdr); | |
318 | } | |
319 | ||
320 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
321 | { | |
322 | struct port *p_ptr; | |
c4307285 | 323 | |
4323add6 | 324 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
325 | if (!p_ptr) |
326 | return -EINVAL; | |
327 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 328 | tipc_port_unlock(p_ptr); |
0e35fd5e | 329 | return 0; |
b97bf3fd PL |
330 | } |
331 | ||
332 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
333 | { | |
334 | struct port *p_ptr; | |
c4307285 | 335 | |
4323add6 | 336 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
337 | if (!p_ptr) |
338 | return -EINVAL; | |
339 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | |
4323add6 | 340 | tipc_port_unlock(p_ptr); |
0e35fd5e | 341 | return 0; |
b97bf3fd PL |
342 | } |
343 | ||
c4307285 YH |
344 | /* |
345 | * port_build_proto_msg(): build a port level protocol | |
346 | * or a connection abortion message. Called with | |
b97bf3fd PL |
347 | * tipc_port lock on. |
348 | */ | |
349 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
350 | u32 origport, u32 orignode, | |
c4307285 | 351 | u32 usr, u32 type, u32 err, |
b97bf3fd PL |
352 | u32 seqno, u32 ack) |
353 | { | |
354 | struct sk_buff *buf; | |
355 | struct tipc_msg *msg; | |
c4307285 | 356 | |
31e3c3f6 | 357 | buf = tipc_buf_acquire(LONG_H_SIZE); |
b97bf3fd PL |
358 | if (buf) { |
359 | msg = buf_msg(buf); | |
c68ca7b7 | 360 | tipc_msg_init(msg, usr, type, LONG_H_SIZE, destnode); |
75715217 | 361 | msg_set_errcode(msg, err); |
b97bf3fd PL |
362 | msg_set_destport(msg, destport); |
363 | msg_set_origport(msg, origport); | |
b97bf3fd PL |
364 | msg_set_orignode(msg, orignode); |
365 | msg_set_transp_seqno(msg, seqno); | |
366 | msg_set_msgcnt(msg, ack); | |
b97bf3fd PL |
367 | } |
368 | return buf; | |
369 | } | |
370 | ||
b97bf3fd PL |
371 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
372 | { | |
373 | struct tipc_msg *msg = buf_msg(buf); | |
374 | struct sk_buff *rbuf; | |
375 | struct tipc_msg *rmsg; | |
376 | int hdr_sz; | |
377 | u32 imp = msg_importance(msg); | |
378 | u32 data_sz = msg_data_sz(msg); | |
379 | ||
380 | if (data_sz > MAX_REJECT_SIZE) | |
381 | data_sz = MAX_REJECT_SIZE; | |
382 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
383 | imp++; | |
b97bf3fd PL |
384 | |
385 | /* discard rejected message if it shouldn't be returned to sender */ | |
386 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
387 | buf_discard(buf); | |
388 | return data_sz; | |
389 | } | |
390 | ||
391 | /* construct rejected message */ | |
392 | if (msg_mcast(msg)) | |
393 | hdr_sz = MCAST_H_SIZE; | |
394 | else | |
395 | hdr_sz = LONG_H_SIZE; | |
31e3c3f6 | 396 | rbuf = tipc_buf_acquire(data_sz + hdr_sz); |
b97bf3fd PL |
397 | if (rbuf == NULL) { |
398 | buf_discard(buf); | |
399 | return data_sz; | |
400 | } | |
401 | rmsg = buf_msg(rbuf); | |
c68ca7b7 | 402 | tipc_msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg)); |
75715217 | 403 | msg_set_errcode(rmsg, err); |
b97bf3fd | 404 | msg_set_destport(rmsg, msg_origport(msg)); |
b97bf3fd | 405 | msg_set_origport(rmsg, msg_destport(msg)); |
99c14593 | 406 | if (msg_short(msg)) { |
b97bf3fd | 407 | msg_set_orignode(rmsg, tipc_own_addr); |
99c14593 AS |
408 | /* leave name type & instance as zeroes */ |
409 | } else { | |
b97bf3fd | 410 | msg_set_orignode(rmsg, msg_destnode(msg)); |
99c14593 AS |
411 | msg_set_nametype(rmsg, msg_nametype(msg)); |
412 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
413 | } | |
c4307285 | 414 | msg_set_size(rmsg, data_sz + hdr_sz); |
27d7ff46 | 415 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
416 | |
417 | /* send self-abort message when rejecting on a connected port */ | |
418 | if (msg_connected(msg)) { | |
1fc54d8f | 419 | struct sk_buff *abuf = NULL; |
4323add6 | 420 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
421 | |
422 | if (p_ptr) { | |
423 | if (p_ptr->publ.connected) | |
424 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 425 | tipc_port_unlock(p_ptr); |
b97bf3fd | 426 | } |
4323add6 | 427 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
428 | } |
429 | ||
430 | /* send rejected message */ | |
431 | buf_discard(buf); | |
4323add6 | 432 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
433 | return data_sz; |
434 | } | |
435 | ||
4323add6 PL |
436 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
437 | struct iovec const *msg_sect, u32 num_sect, | |
438 | int err) | |
b97bf3fd PL |
439 | { |
440 | struct sk_buff *buf; | |
441 | int res; | |
442 | ||
c68ca7b7 | 443 | res = tipc_msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
444 | !p_ptr->user_port, &buf); |
445 | if (!buf) | |
446 | return res; | |
447 | ||
448 | return tipc_reject_msg(buf, err); | |
449 | } | |
450 | ||
451 | static void port_timeout(unsigned long ref) | |
452 | { | |
4323add6 | 453 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 454 | struct sk_buff *buf = NULL; |
b97bf3fd | 455 | |
065fd177 AS |
456 | if (!p_ptr) |
457 | return; | |
458 | ||
459 | if (!p_ptr->publ.connected) { | |
460 | tipc_port_unlock(p_ptr); | |
b97bf3fd | 461 | return; |
065fd177 | 462 | } |
b97bf3fd PL |
463 | |
464 | /* Last probe answered ? */ | |
465 | if (p_ptr->probing_state == PROBING) { | |
466 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
467 | } else { | |
468 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
469 | port_peernode(p_ptr), | |
470 | p_ptr->publ.ref, | |
471 | tipc_own_addr, | |
472 | CONN_MANAGER, | |
473 | CONN_PROBE, | |
c4307285 | 474 | TIPC_OK, |
b97bf3fd PL |
475 | port_out_seqno(p_ptr), |
476 | 0); | |
477 | port_incr_out_seqno(p_ptr); | |
478 | p_ptr->probing_state = PROBING; | |
479 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
480 | } | |
4323add6 PL |
481 | tipc_port_unlock(p_ptr); |
482 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
483 | } |
484 | ||
485 | ||
486 | static void port_handle_node_down(unsigned long ref) | |
487 | { | |
4323add6 | 488 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 489 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
490 | |
491 | if (!p_ptr) | |
492 | return; | |
493 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
494 | tipc_port_unlock(p_ptr); |
495 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
496 | } |
497 | ||
498 | ||
499 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
500 | { | |
501 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
502 | ||
503 | if (!p_ptr->publ.connected) | |
1fc54d8f | 504 | return NULL; |
b97bf3fd PL |
505 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
506 | imp++; | |
507 | return port_build_proto_msg(p_ptr->publ.ref, | |
508 | tipc_own_addr, | |
509 | port_peerport(p_ptr), | |
510 | port_peernode(p_ptr), | |
511 | imp, | |
512 | TIPC_CONN_MSG, | |
c4307285 | 513 | err, |
b97bf3fd PL |
514 | p_ptr->last_in_seqno + 1, |
515 | 0); | |
516 | } | |
517 | ||
518 | ||
519 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
520 | { | |
521 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
522 | ||
523 | if (!p_ptr->publ.connected) | |
1fc54d8f | 524 | return NULL; |
b97bf3fd PL |
525 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
526 | imp++; | |
527 | return port_build_proto_msg(port_peerport(p_ptr), | |
528 | port_peernode(p_ptr), | |
529 | p_ptr->publ.ref, | |
530 | tipc_own_addr, | |
531 | imp, | |
532 | TIPC_CONN_MSG, | |
c4307285 | 533 | err, |
b97bf3fd PL |
534 | port_out_seqno(p_ptr), |
535 | 0); | |
536 | } | |
537 | ||
4323add6 | 538 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
539 | { |
540 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 541 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 542 | u32 err = TIPC_OK; |
1fc54d8f SR |
543 | struct sk_buff *r_buf = NULL; |
544 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd | 545 | |
b97bf3fd PL |
546 | if (!p_ptr) { |
547 | err = TIPC_ERR_NO_PORT; | |
548 | } else if (p_ptr->publ.connected) { | |
96d841b7 AS |
549 | if ((port_peernode(p_ptr) != msg_orignode(msg)) || |
550 | (port_peerport(p_ptr) != msg_origport(msg))) { | |
b97bf3fd | 551 | err = TIPC_ERR_NO_PORT; |
96d841b7 | 552 | } else if (msg_type(msg) == CONN_ACK) { |
c4307285 | 553 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
554 | p_ptr->publ.congested && |
555 | p_ptr->wakeup; | |
556 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 557 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
558 | goto exit; |
559 | p_ptr->publ.congested = 0; | |
560 | if (!wakeup) | |
561 | goto exit; | |
562 | p_ptr->wakeup(&p_ptr->publ); | |
563 | goto exit; | |
564 | } | |
565 | } else if (p_ptr->publ.published) { | |
566 | err = TIPC_ERR_NO_PORT; | |
567 | } | |
568 | if (err) { | |
569 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
570 | msg_orignode(msg), |
571 | msg_destport(msg), | |
b97bf3fd | 572 | tipc_own_addr, |
06d82c91 | 573 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
574 | TIPC_CONN_MSG, |
575 | err, | |
576 | 0, | |
577 | 0); | |
578 | goto exit; | |
579 | } | |
580 | ||
581 | /* All is fine */ | |
582 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
583 | r_buf = port_build_proto_msg(msg_origport(msg), |
584 | msg_orignode(msg), | |
585 | msg_destport(msg), | |
586 | tipc_own_addr, | |
b97bf3fd PL |
587 | CONN_MANAGER, |
588 | CONN_PROBE_REPLY, | |
589 | TIPC_OK, | |
590 | port_out_seqno(p_ptr), | |
591 | 0); | |
592 | } | |
593 | p_ptr->probing_state = CONFIRMED; | |
594 | port_incr_out_seqno(p_ptr); | |
595 | exit: | |
596 | if (p_ptr) | |
4323add6 PL |
597 | tipc_port_unlock(p_ptr); |
598 | tipc_net_route_msg(r_buf); | |
599 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
600 | buf_discard(buf); |
601 | } | |
602 | ||
603 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
604 | { | |
c4307285 | 605 | struct publication *publ; |
b97bf3fd PL |
606 | |
607 | if (full_id) | |
c4307285 | 608 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 609 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
c4307285 | 610 | tipc_node(tipc_own_addr), p_ptr->publ.ref); |
b97bf3fd PL |
611 | else |
612 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
613 | ||
c4307285 YH |
614 | if (p_ptr->publ.connected) { |
615 | u32 dport = port_peerport(p_ptr); | |
616 | u32 destnode = port_peernode(p_ptr); | |
617 | ||
618 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
619 | tipc_zone(destnode), tipc_cluster(destnode), | |
620 | tipc_node(destnode), dport); | |
621 | if (p_ptr->publ.conn_type != 0) | |
622 | tipc_printf(buf, " via {%u,%u}", | |
623 | p_ptr->publ.conn_type, | |
624 | p_ptr->publ.conn_instance); | |
625 | } | |
626 | else if (p_ptr->publ.published) { | |
627 | tipc_printf(buf, " bound to"); | |
628 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
629 | if (publ->lower == publ->upper) |
630 | tipc_printf(buf, " {%u,%u}", publ->type, | |
631 | publ->lower); | |
632 | else | |
c4307285 | 633 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 634 | publ->lower, publ->upper); |
c4307285 YH |
635 | } |
636 | } | |
637 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
638 | } |
639 | ||
640 | #define MAX_PORT_QUERY 32768 | |
641 | ||
4323add6 | 642 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
643 | { |
644 | struct sk_buff *buf; | |
645 | struct tlv_desc *rep_tlv; | |
646 | struct print_buf pb; | |
647 | struct port *p_ptr; | |
648 | int str_len; | |
649 | ||
4323add6 | 650 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
651 | if (!buf) |
652 | return NULL; | |
653 | rep_tlv = (struct tlv_desc *)buf->data; | |
654 | ||
4323add6 PL |
655 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
656 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
657 | list_for_each_entry(p_ptr, &ports, port_list) { |
658 | spin_lock_bh(p_ptr->publ.lock); | |
659 | port_print(p_ptr, &pb, 0); | |
660 | spin_unlock_bh(p_ptr->publ.lock); | |
661 | } | |
4323add6 PL |
662 | spin_unlock_bh(&tipc_port_list_lock); |
663 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
664 | |
665 | skb_put(buf, TLV_SPACE(str_len)); | |
666 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
667 | ||
668 | return buf; | |
669 | } | |
670 | ||
4323add6 | 671 | void tipc_port_reinit(void) |
b97bf3fd PL |
672 | { |
673 | struct port *p_ptr; | |
674 | struct tipc_msg *msg; | |
675 | ||
4323add6 | 676 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
677 | list_for_each_entry(p_ptr, &ports, port_list) { |
678 | msg = &p_ptr->publ.phdr; | |
679 | if (msg_orignode(msg) == tipc_own_addr) | |
680 | break; | |
6d4a6672 | 681 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
682 | msg_set_orignode(msg, tipc_own_addr); |
683 | } | |
4323add6 | 684 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
685 | } |
686 | ||
687 | ||
688 | /* | |
689 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
690 | * to the tipc_port interface. | |
691 | */ | |
692 | ||
693 | static void port_dispatcher_sigh(void *dummy) | |
694 | { | |
695 | struct sk_buff *buf; | |
696 | ||
697 | spin_lock_bh(&queue_lock); | |
698 | buf = msg_queue_head; | |
1fc54d8f | 699 | msg_queue_head = NULL; |
b97bf3fd PL |
700 | spin_unlock_bh(&queue_lock); |
701 | ||
702 | while (buf) { | |
703 | struct port *p_ptr; | |
704 | struct user_port *up_ptr; | |
705 | struct tipc_portid orig; | |
706 | struct tipc_name_seq dseq; | |
707 | void *usr_handle; | |
708 | int connected; | |
709 | int published; | |
9688243b | 710 | u32 message_type; |
b97bf3fd PL |
711 | |
712 | struct sk_buff *next = buf->next; | |
713 | struct tipc_msg *msg = buf_msg(buf); | |
714 | u32 dref = msg_destport(msg); | |
c4307285 | 715 | |
9688243b AS |
716 | message_type = msg_type(msg); |
717 | if (message_type > TIPC_DIRECT_MSG) | |
718 | goto reject; /* Unsupported message type */ | |
719 | ||
4323add6 | 720 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
721 | if (!p_ptr) |
722 | goto reject; /* Port deleted while msg in queue */ | |
723 | ||
b97bf3fd PL |
724 | orig.ref = msg_origport(msg); |
725 | orig.node = msg_orignode(msg); | |
726 | up_ptr = p_ptr->user_port; | |
727 | usr_handle = up_ptr->usr_handle; | |
728 | connected = p_ptr->publ.connected; | |
729 | published = p_ptr->publ.published; | |
730 | ||
731 | if (unlikely(msg_errcode(msg))) | |
732 | goto err; | |
733 | ||
9688243b | 734 | switch (message_type) { |
c4307285 | 735 | |
b97bf3fd PL |
736 | case TIPC_CONN_MSG:{ |
737 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
738 | u32 peer_port = port_peerport(p_ptr); | |
739 | u32 peer_node = port_peernode(p_ptr); | |
740 | ||
4cec72c8 | 741 | tipc_port_unlock(p_ptr); |
5307e469 AS |
742 | if (unlikely(!cb)) |
743 | goto reject; | |
b97bf3fd | 744 | if (unlikely(!connected)) { |
84b07c16 | 745 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 746 | goto reject; |
84b07c16 AS |
747 | } else if ((msg_origport(msg) != peer_port) || |
748 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 749 | goto reject; |
c4307285 | 750 | if (unlikely(++p_ptr->publ.conn_unacked >= |
b97bf3fd | 751 | TIPC_FLOW_CONTROL_WIN)) |
c4307285 | 752 | tipc_acknowledge(dref, |
b97bf3fd PL |
753 | p_ptr->publ.conn_unacked); |
754 | skb_pull(buf, msg_hdr_sz(msg)); | |
755 | cb(usr_handle, dref, &buf, msg_data(msg), | |
756 | msg_data_sz(msg)); | |
757 | break; | |
758 | } | |
759 | case TIPC_DIRECT_MSG:{ | |
760 | tipc_msg_event cb = up_ptr->msg_cb; | |
761 | ||
4cec72c8 | 762 | tipc_port_unlock(p_ptr); |
5307e469 | 763 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
764 | goto reject; |
765 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 766 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
767 | msg_data_sz(msg), msg_importance(msg), |
768 | &orig); | |
769 | break; | |
770 | } | |
9688243b | 771 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
772 | case TIPC_NAMED_MSG:{ |
773 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
774 | ||
4cec72c8 | 775 | tipc_port_unlock(p_ptr); |
5307e469 | 776 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
777 | goto reject; |
778 | dseq.type = msg_nametype(msg); | |
779 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
780 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
781 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 782 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 783 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
784 | msg_data_sz(msg), msg_importance(msg), |
785 | &orig, &dseq); | |
786 | break; | |
787 | } | |
788 | } | |
789 | if (buf) | |
790 | buf_discard(buf); | |
791 | buf = next; | |
792 | continue; | |
793 | err: | |
9688243b | 794 | switch (message_type) { |
c4307285 | 795 | |
b97bf3fd | 796 | case TIPC_CONN_MSG:{ |
c4307285 | 797 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
798 | up_ptr->conn_err_cb; |
799 | u32 peer_port = port_peerport(p_ptr); | |
800 | u32 peer_node = port_peernode(p_ptr); | |
801 | ||
4cec72c8 | 802 | tipc_port_unlock(p_ptr); |
5307e469 | 803 | if (!cb || !connected) |
b97bf3fd | 804 | break; |
5307e469 AS |
805 | if ((msg_origport(msg) != peer_port) || |
806 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
807 | break; |
808 | tipc_disconnect(dref); | |
809 | skb_pull(buf, msg_hdr_sz(msg)); | |
810 | cb(usr_handle, dref, &buf, msg_data(msg), | |
811 | msg_data_sz(msg), msg_errcode(msg)); | |
812 | break; | |
813 | } | |
814 | case TIPC_DIRECT_MSG:{ | |
815 | tipc_msg_err_event cb = up_ptr->err_cb; | |
816 | ||
4cec72c8 | 817 | tipc_port_unlock(p_ptr); |
5307e469 | 818 | if (!cb || connected) |
b97bf3fd PL |
819 | break; |
820 | skb_pull(buf, msg_hdr_sz(msg)); | |
821 | cb(usr_handle, dref, &buf, msg_data(msg), | |
822 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
823 | break; | |
824 | } | |
9688243b | 825 | case TIPC_MCAST_MSG: |
b97bf3fd | 826 | case TIPC_NAMED_MSG:{ |
c4307285 | 827 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
828 | up_ptr->named_err_cb; |
829 | ||
4cec72c8 | 830 | tipc_port_unlock(p_ptr); |
5307e469 | 831 | if (!cb || connected) |
b97bf3fd PL |
832 | break; |
833 | dseq.type = msg_nametype(msg); | |
834 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
835 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
836 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 837 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 838 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
839 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
840 | break; | |
841 | } | |
842 | } | |
843 | if (buf) | |
844 | buf_discard(buf); | |
845 | buf = next; | |
846 | continue; | |
847 | reject: | |
848 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
849 | buf = next; | |
850 | } | |
851 | } | |
852 | ||
853 | /* | |
854 | * port_dispatcher(): Dispatcher for messages destinated | |
855 | * to the tipc_port interface. Called with port locked. | |
856 | */ | |
857 | ||
858 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
859 | { | |
860 | buf->next = NULL; | |
861 | spin_lock_bh(&queue_lock); | |
862 | if (msg_queue_head) { | |
863 | msg_queue_tail->next = buf; | |
864 | msg_queue_tail = buf; | |
865 | } else { | |
866 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 867 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
868 | } |
869 | spin_unlock_bh(&queue_lock); | |
0e35fd5e | 870 | return 0; |
b97bf3fd PL |
871 | } |
872 | ||
c4307285 | 873 | /* |
b97bf3fd | 874 | * Wake up port after congestion: Called with port locked, |
c4307285 | 875 | * |
b97bf3fd PL |
876 | */ |
877 | ||
878 | static void port_wakeup_sh(unsigned long ref) | |
879 | { | |
880 | struct port *p_ptr; | |
881 | struct user_port *up_ptr; | |
1fc54d8f SR |
882 | tipc_continue_event cb = NULL; |
883 | void *uh = NULL; | |
b97bf3fd | 884 | |
4323add6 | 885 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
886 | if (p_ptr) { |
887 | up_ptr = p_ptr->user_port; | |
888 | if (up_ptr) { | |
889 | cb = up_ptr->continue_event_cb; | |
890 | uh = up_ptr->usr_handle; | |
891 | } | |
4323add6 | 892 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
893 | } |
894 | if (cb) | |
895 | cb(uh, ref); | |
896 | } | |
897 | ||
898 | ||
899 | static void port_wakeup(struct tipc_port *p_ptr) | |
900 | { | |
4323add6 | 901 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
902 | } |
903 | ||
904 | void tipc_acknowledge(u32 ref, u32 ack) | |
905 | { | |
906 | struct port *p_ptr; | |
1fc54d8f | 907 | struct sk_buff *buf = NULL; |
b97bf3fd | 908 | |
4323add6 | 909 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
910 | if (!p_ptr) |
911 | return; | |
912 | if (p_ptr->publ.connected) { | |
913 | p_ptr->publ.conn_unacked -= ack; | |
914 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
915 | port_peernode(p_ptr), | |
916 | ref, | |
917 | tipc_own_addr, | |
918 | CONN_MANAGER, | |
919 | CONN_ACK, | |
c4307285 | 920 | TIPC_OK, |
b97bf3fd PL |
921 | port_out_seqno(p_ptr), |
922 | ack); | |
923 | } | |
4323add6 PL |
924 | tipc_port_unlock(p_ptr); |
925 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
926 | } |
927 | ||
928 | /* | |
b0c1e928 | 929 | * tipc_createport(): user level call. |
b97bf3fd PL |
930 | */ |
931 | ||
b0c1e928 | 932 | int tipc_createport(void *usr_handle, |
c4307285 YH |
933 | unsigned int importance, |
934 | tipc_msg_err_event error_cb, | |
935 | tipc_named_msg_err_event named_error_cb, | |
936 | tipc_conn_shutdown_event conn_error_cb, | |
937 | tipc_msg_event msg_cb, | |
938 | tipc_named_msg_event named_msg_cb, | |
939 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
940 | tipc_continue_event continue_event_cb,/* May be zero */ |
941 | u32 *portref) | |
942 | { | |
943 | struct user_port *up_ptr; | |
c4307285 | 944 | struct port *p_ptr; |
b97bf3fd | 945 | |
0da974f4 | 946 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 947 | if (!up_ptr) { |
a75bf874 | 948 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
949 | return -ENOMEM; |
950 | } | |
0ea52241 AS |
951 | p_ptr = (struct port *)tipc_createport_raw(NULL, port_dispatcher, |
952 | port_wakeup, importance); | |
953 | if (!p_ptr) { | |
b97bf3fd PL |
954 | kfree(up_ptr); |
955 | return -ENOMEM; | |
956 | } | |
957 | ||
958 | p_ptr->user_port = up_ptr; | |
b97bf3fd PL |
959 | up_ptr->usr_handle = usr_handle; |
960 | up_ptr->ref = p_ptr->publ.ref; | |
961 | up_ptr->err_cb = error_cb; | |
962 | up_ptr->named_err_cb = named_error_cb; | |
963 | up_ptr->conn_err_cb = conn_error_cb; | |
964 | up_ptr->msg_cb = msg_cb; | |
965 | up_ptr->named_msg_cb = named_msg_cb; | |
966 | up_ptr->conn_msg_cb = conn_msg_cb; | |
967 | up_ptr->continue_event_cb = continue_event_cb; | |
b97bf3fd | 968 | *portref = p_ptr->publ.ref; |
4323add6 | 969 | tipc_port_unlock(p_ptr); |
0e35fd5e | 970 | return 0; |
b97bf3fd PL |
971 | } |
972 | ||
b97bf3fd PL |
973 | int tipc_portimportance(u32 ref, unsigned int *importance) |
974 | { | |
975 | struct port *p_ptr; | |
c4307285 | 976 | |
4323add6 | 977 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
978 | if (!p_ptr) |
979 | return -EINVAL; | |
980 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
4cec72c8 | 981 | tipc_port_unlock(p_ptr); |
0e35fd5e | 982 | return 0; |
b97bf3fd PL |
983 | } |
984 | ||
985 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
986 | { | |
987 | struct port *p_ptr; | |
988 | ||
989 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
990 | return -EINVAL; | |
991 | ||
4323add6 | 992 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
993 | if (!p_ptr) |
994 | return -EINVAL; | |
995 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
4cec72c8 | 996 | tipc_port_unlock(p_ptr); |
0e35fd5e | 997 | return 0; |
b97bf3fd PL |
998 | } |
999 | ||
1000 | ||
1001 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1002 | { | |
1003 | struct port *p_ptr; | |
1004 | struct publication *publ; | |
1005 | u32 key; | |
1006 | int res = -EINVAL; | |
1007 | ||
4323add6 | 1008 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
1009 | if (!p_ptr) |
1010 | return -EINVAL; | |
1011 | ||
b97bf3fd PL |
1012 | if (p_ptr->publ.connected) |
1013 | goto exit; | |
1014 | if (seq->lower > seq->upper) | |
1015 | goto exit; | |
1016 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1017 | goto exit; | |
1018 | key = ref + p_ptr->pub_count + 1; | |
1019 | if (key == ref) { | |
1020 | res = -EADDRINUSE; | |
1021 | goto exit; | |
1022 | } | |
4323add6 PL |
1023 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1024 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1025 | if (publ) { |
1026 | list_add(&publ->pport_list, &p_ptr->publications); | |
1027 | p_ptr->pub_count++; | |
1028 | p_ptr->publ.published = 1; | |
0e35fd5e | 1029 | res = 0; |
b97bf3fd PL |
1030 | } |
1031 | exit: | |
4323add6 | 1032 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1033 | return res; |
1034 | } | |
1035 | ||
1036 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1037 | { | |
1038 | struct port *p_ptr; | |
1039 | struct publication *publ; | |
1040 | struct publication *tpubl; | |
1041 | int res = -EINVAL; | |
c4307285 | 1042 | |
4323add6 | 1043 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1044 | if (!p_ptr) |
1045 | return -EINVAL; | |
b97bf3fd | 1046 | if (!seq) { |
c4307285 | 1047 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1048 | &p_ptr->publications, pport_list) { |
c4307285 | 1049 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1050 | publ->ref, publ->key); |
b97bf3fd | 1051 | } |
0e35fd5e | 1052 | res = 0; |
b97bf3fd | 1053 | } else { |
c4307285 | 1054 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1055 | &p_ptr->publications, pport_list) { |
1056 | if (publ->scope != scope) | |
1057 | continue; | |
1058 | if (publ->type != seq->type) | |
1059 | continue; | |
1060 | if (publ->lower != seq->lower) | |
1061 | continue; | |
1062 | if (publ->upper != seq->upper) | |
1063 | break; | |
c4307285 | 1064 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1065 | publ->ref, publ->key); |
0e35fd5e | 1066 | res = 0; |
b97bf3fd PL |
1067 | break; |
1068 | } | |
1069 | } | |
1070 | if (list_empty(&p_ptr->publications)) | |
1071 | p_ptr->publ.published = 0; | |
4323add6 | 1072 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1073 | return res; |
1074 | } | |
1075 | ||
1076 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1077 | { | |
1078 | struct port *p_ptr; | |
1079 | struct tipc_msg *msg; | |
1080 | int res = -EINVAL; | |
1081 | ||
4323add6 | 1082 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1083 | if (!p_ptr) |
1084 | return -EINVAL; | |
1085 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1086 | goto exit; | |
1087 | if (!peer->ref) | |
1088 | goto exit; | |
1089 | ||
1090 | msg = &p_ptr->publ.phdr; | |
1091 | msg_set_destnode(msg, peer->node); | |
1092 | msg_set_destport(msg, peer->ref); | |
1093 | msg_set_orignode(msg, tipc_own_addr); | |
1094 | msg_set_origport(msg, p_ptr->publ.ref); | |
1095 | msg_set_transp_seqno(msg, 42); | |
1096 | msg_set_type(msg, TIPC_CONN_MSG); | |
08c80e9a | 1097 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
1098 | |
1099 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1100 | p_ptr->probing_state = CONFIRMED; | |
1101 | p_ptr->publ.connected = 1; | |
1102 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1103 | ||
4323add6 | 1104 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1105 | (void *)(unsigned long)ref, |
b97bf3fd | 1106 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 1107 | res = 0; |
b97bf3fd | 1108 | exit: |
4323add6 | 1109 | tipc_port_unlock(p_ptr); |
05646c91 | 1110 | p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1111 | return res; |
1112 | } | |
1113 | ||
0c3141e9 AS |
1114 | /** |
1115 | * tipc_disconnect_port - disconnect port from peer | |
1116 | * | |
1117 | * Port must be locked. | |
1118 | */ | |
1119 | ||
1120 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1121 | { | |
1122 | int res; | |
1123 | ||
1124 | if (tp_ptr->connected) { | |
1125 | tp_ptr->connected = 0; | |
1126 | /* let timer expire on it's own to avoid deadlock! */ | |
1127 | tipc_nodesub_unsubscribe( | |
1128 | &((struct port *)tp_ptr)->subscription); | |
0e35fd5e | 1129 | res = 0; |
0c3141e9 AS |
1130 | } else { |
1131 | res = -ENOTCONN; | |
1132 | } | |
1133 | return res; | |
1134 | } | |
1135 | ||
b97bf3fd PL |
1136 | /* |
1137 | * tipc_disconnect(): Disconnect port form peer. | |
1138 | * This is a node local operation. | |
1139 | */ | |
1140 | ||
1141 | int tipc_disconnect(u32 ref) | |
1142 | { | |
1143 | struct port *p_ptr; | |
0c3141e9 | 1144 | int res; |
b97bf3fd | 1145 | |
4323add6 | 1146 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1147 | if (!p_ptr) |
1148 | return -EINVAL; | |
0c3141e9 | 1149 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1150 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1151 | return res; |
1152 | } | |
1153 | ||
1154 | /* | |
1155 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1156 | */ | |
1157 | int tipc_shutdown(u32 ref) | |
1158 | { | |
1159 | struct port *p_ptr; | |
1fc54d8f | 1160 | struct sk_buff *buf = NULL; |
b97bf3fd | 1161 | |
4323add6 | 1162 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1163 | if (!p_ptr) |
1164 | return -EINVAL; | |
1165 | ||
1166 | if (p_ptr->publ.connected) { | |
1167 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1168 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1169 | imp++; | |
1170 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1171 | port_peernode(p_ptr), | |
1172 | ref, | |
1173 | tipc_own_addr, | |
1174 | imp, | |
1175 | TIPC_CONN_MSG, | |
c4307285 | 1176 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1177 | port_out_seqno(p_ptr), |
1178 | 0); | |
1179 | } | |
4323add6 PL |
1180 | tipc_port_unlock(p_ptr); |
1181 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1182 | return tipc_disconnect(ref); |
1183 | } | |
1184 | ||
b97bf3fd | 1185 | /* |
4323add6 | 1186 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1187 | * message for this node. |
1188 | */ | |
1189 | ||
31e3c3f6 | 1190 | static int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
1191 | struct iovec const *msg_sect) | |
b97bf3fd PL |
1192 | { |
1193 | struct sk_buff *buf; | |
1194 | int res; | |
c4307285 | 1195 | |
c68ca7b7 | 1196 | res = tipc_msg_build(&sender->publ.phdr, msg_sect, num_sect, |
b97bf3fd PL |
1197 | MAX_MSG_SIZE, !sender->user_port, &buf); |
1198 | if (likely(buf)) | |
4323add6 | 1199 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1200 | return res; |
1201 | } | |
1202 | ||
1203 | /** | |
1204 | * tipc_send - send message sections on connection | |
1205 | */ | |
1206 | ||
1207 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1208 | { | |
1209 | struct port *p_ptr; | |
1210 | u32 destnode; | |
1211 | int res; | |
1212 | ||
4323add6 | 1213 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1214 | if (!p_ptr || !p_ptr->publ.connected) |
1215 | return -EINVAL; | |
1216 | ||
1217 | p_ptr->publ.congested = 1; | |
4323add6 | 1218 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1219 | destnode = port_peernode(p_ptr); |
1220 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1221 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1222 | destnode); | |
b97bf3fd | 1223 | else |
4323add6 | 1224 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1225 | |
1226 | if (likely(res != -ELINKCONG)) { | |
1227 | port_incr_out_seqno(p_ptr); | |
1228 | p_ptr->publ.congested = 0; | |
1229 | p_ptr->sent++; | |
1230 | return res; | |
1231 | } | |
1232 | } | |
1233 | if (port_unreliable(p_ptr)) { | |
1234 | p_ptr->publ.congested = 0; | |
1235 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1236 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1237 | } |
1238 | return -ELINKCONG; | |
1239 | } | |
1240 | ||
b97bf3fd | 1241 | /** |
12bae479 | 1242 | * tipc_send2name - send message sections to port name |
b97bf3fd PL |
1243 | */ |
1244 | ||
12bae479 AS |
1245 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
1246 | unsigned int num_sect, struct iovec const *msg_sect) | |
b97bf3fd PL |
1247 | { |
1248 | struct port *p_ptr; | |
1249 | struct tipc_msg *msg; | |
1250 | u32 destnode = domain; | |
9ccc2eb4 | 1251 | u32 destport; |
b97bf3fd PL |
1252 | int res; |
1253 | ||
4323add6 | 1254 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1255 | if (!p_ptr || p_ptr->publ.connected) |
1256 | return -EINVAL; | |
1257 | ||
1258 | msg = &p_ptr->publ.phdr; | |
1259 | msg_set_type(msg, TIPC_NAMED_MSG); | |
12bae479 AS |
1260 | msg_set_orignode(msg, tipc_own_addr); |
1261 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1262 | msg_set_hdr_sz(msg, LONG_H_SIZE); |
1263 | msg_set_nametype(msg, name->type); | |
1264 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 1265 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 1266 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1267 | msg_set_destnode(msg, destnode); |
1268 | msg_set_destport(msg, destport); | |
1269 | ||
5d9c54c1 | 1270 | if (likely(destport)) { |
b97bf3fd PL |
1271 | p_ptr->sent++; |
1272 | if (likely(destnode == tipc_own_addr)) | |
4323add6 | 1273 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
c4307285 | 1274 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
4323add6 | 1275 | destnode); |
b97bf3fd PL |
1276 | if (likely(res != -ELINKCONG)) |
1277 | return res; | |
1278 | if (port_unreliable(p_ptr)) { | |
1279 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1280 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1281 | } |
1282 | return -ELINKCONG; | |
1283 | } | |
c4307285 | 1284 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1285 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1286 | } |
1287 | ||
1288 | /** | |
12bae479 | 1289 | * tipc_send2port - send message sections to port identity |
b97bf3fd PL |
1290 | */ |
1291 | ||
12bae479 AS |
1292 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
1293 | unsigned int num_sect, struct iovec const *msg_sect) | |
b97bf3fd PL |
1294 | { |
1295 | struct port *p_ptr; | |
1296 | struct tipc_msg *msg; | |
1297 | int res; | |
1298 | ||
4323add6 | 1299 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1300 | if (!p_ptr || p_ptr->publ.connected) |
1301 | return -EINVAL; | |
1302 | ||
1303 | msg = &p_ptr->publ.phdr; | |
1304 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
12bae479 AS |
1305 | msg_set_orignode(msg, tipc_own_addr); |
1306 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1307 | msg_set_destnode(msg, dest->node); |
1308 | msg_set_destport(msg, dest->ref); | |
1309 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
b97bf3fd PL |
1310 | p_ptr->sent++; |
1311 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1312 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1313 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1314 | if (likely(res != -ELINKCONG)) |
1315 | return res; | |
1316 | if (port_unreliable(p_ptr)) { | |
1317 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1318 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1319 | } |
1320 | return -ELINKCONG; | |
1321 | } | |
1322 | ||
c4307285 | 1323 | /** |
12bae479 | 1324 | * tipc_send_buf2port - send message buffer to port identity |
b97bf3fd PL |
1325 | */ |
1326 | ||
12bae479 AS |
1327 | int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest, |
1328 | struct sk_buff *buf, unsigned int dsz) | |
b97bf3fd PL |
1329 | { |
1330 | struct port *p_ptr; | |
1331 | struct tipc_msg *msg; | |
1332 | int res; | |
1333 | ||
4323add6 | 1334 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1335 | if (!p_ptr || p_ptr->publ.connected) |
1336 | return -EINVAL; | |
1337 | ||
1338 | msg = &p_ptr->publ.phdr; | |
1339 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
12bae479 AS |
1340 | msg_set_orignode(msg, tipc_own_addr); |
1341 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1342 | msg_set_destnode(msg, dest->node); |
1343 | msg_set_destport(msg, dest->ref); | |
1344 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
b97bf3fd PL |
1345 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); |
1346 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1347 | return -ENOMEM; | |
1348 | ||
1349 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1350 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
b97bf3fd PL |
1351 | p_ptr->sent++; |
1352 | if (dest->node == tipc_own_addr) | |
4323add6 | 1353 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1354 | res = tipc_send_buf_fast(buf, dest->node); |
1355 | if (likely(res != -ELINKCONG)) | |
1356 | return res; | |
1357 | if (port_unreliable(p_ptr)) | |
1358 | return dsz; | |
1359 | return -ELINKCONG; | |
1360 | } | |
1361 |