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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 PL |
40 | #include "name_table.h" |
41 | #include "user_reg.h" | |
b97bf3fd PL |
42 | |
43 | /* Connection management: */ | |
44 | #define PROBING_INTERVAL 3600000 /* [ms] => 1 h */ | |
45 | #define CONFIRMED 0 | |
46 | #define PROBING 1 | |
47 | ||
48 | #define MAX_REJECT_SIZE 1024 | |
49 | ||
1fc54d8f SR |
50 | static struct sk_buff *msg_queue_head = NULL; |
51 | static struct sk_buff *msg_queue_tail = NULL; | |
b97bf3fd | 52 | |
34af946a IM |
53 | DEFINE_SPINLOCK(tipc_port_list_lock); |
54 | static DEFINE_SPINLOCK(queue_lock); | |
b97bf3fd | 55 | |
4323add6 | 56 | static LIST_HEAD(ports); |
b97bf3fd PL |
57 | static void port_handle_node_down(unsigned long ref); |
58 | static struct sk_buff* port_build_self_abort_msg(struct port *,u32 err); | |
59 | static struct sk_buff* port_build_peer_abort_msg(struct port *,u32 err); | |
60 | static void port_timeout(unsigned long ref); | |
61 | ||
62 | ||
05790c64 | 63 | static u32 port_peernode(struct port *p_ptr) |
b97bf3fd PL |
64 | { |
65 | return msg_destnode(&p_ptr->publ.phdr); | |
66 | } | |
67 | ||
05790c64 | 68 | static u32 port_peerport(struct port *p_ptr) |
b97bf3fd PL |
69 | { |
70 | return msg_destport(&p_ptr->publ.phdr); | |
71 | } | |
72 | ||
05790c64 | 73 | static u32 port_out_seqno(struct port *p_ptr) |
b97bf3fd PL |
74 | { |
75 | return msg_transp_seqno(&p_ptr->publ.phdr); | |
76 | } | |
77 | ||
05790c64 | 78 | static void port_incr_out_seqno(struct port *p_ptr) |
b97bf3fd PL |
79 | { |
80 | struct tipc_msg *m = &p_ptr->publ.phdr; | |
81 | ||
82 | if (likely(!msg_routed(m))) | |
83 | return; | |
84 | msg_set_transp_seqno(m, (msg_transp_seqno(m) + 1)); | |
85 | } | |
86 | ||
87 | /** | |
88 | * tipc_multicast - send a multicast message to local and remote destinations | |
89 | */ | |
90 | ||
38f232ea | 91 | int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, |
b97bf3fd PL |
92 | u32 num_sect, struct iovec const *msg_sect) |
93 | { | |
94 | struct tipc_msg *hdr; | |
95 | struct sk_buff *buf; | |
96 | struct sk_buff *ibuf = NULL; | |
97 | struct port_list dports = {0, NULL, }; | |
4323add6 | 98 | struct port *oport = tipc_port_deref(ref); |
b97bf3fd PL |
99 | int ext_targets; |
100 | int res; | |
101 | ||
102 | if (unlikely(!oport)) | |
103 | return -EINVAL; | |
104 | ||
105 | /* Create multicast message */ | |
106 | ||
107 | hdr = &oport->publ.phdr; | |
108 | msg_set_type(hdr, TIPC_MCAST_MSG); | |
109 | msg_set_nametype(hdr, seq->type); | |
110 | msg_set_namelower(hdr, seq->lower); | |
111 | msg_set_nameupper(hdr, seq->upper); | |
112 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | |
c68ca7b7 | 113 | res = tipc_msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
114 | !oport->user_port, &buf); |
115 | if (unlikely(!buf)) | |
116 | return res; | |
117 | ||
118 | /* Figure out where to send multicast message */ | |
119 | ||
4323add6 PL |
120 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
121 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
122 | |
123 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
124 | |
125 | if (ext_targets) { | |
126 | if (dports.count != 0) { | |
127 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
128 | if (ibuf == NULL) { | |
4323add6 | 129 | tipc_port_list_free(&dports); |
b97bf3fd PL |
130 | buf_discard(buf); |
131 | return -ENOMEM; | |
132 | } | |
133 | } | |
4323add6 | 134 | res = tipc_bclink_send_msg(buf); |
b97bf3fd PL |
135 | if ((res < 0) && (dports.count != 0)) { |
136 | buf_discard(ibuf); | |
137 | } | |
138 | } else { | |
139 | ibuf = buf; | |
140 | } | |
141 | ||
142 | if (res >= 0) { | |
143 | if (ibuf) | |
4323add6 | 144 | tipc_port_recv_mcast(ibuf, &dports); |
b97bf3fd | 145 | } else { |
4323add6 | 146 | tipc_port_list_free(&dports); |
b97bf3fd PL |
147 | } |
148 | return res; | |
149 | } | |
150 | ||
151 | /** | |
4323add6 | 152 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
c4307285 | 153 | * |
b97bf3fd PL |
154 | * If there is no port list, perform a lookup to create one |
155 | */ | |
156 | ||
4323add6 | 157 | void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp) |
b97bf3fd PL |
158 | { |
159 | struct tipc_msg* msg; | |
160 | struct port_list dports = {0, NULL, }; | |
161 | struct port_list *item = dp; | |
162 | int cnt = 0; | |
163 | ||
b97bf3fd PL |
164 | msg = buf_msg(buf); |
165 | ||
166 | /* Create destination port list, if one wasn't supplied */ | |
167 | ||
168 | if (dp == NULL) { | |
4323add6 | 169 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
170 | msg_namelower(msg), |
171 | msg_nameupper(msg), | |
172 | TIPC_CLUSTER_SCOPE, | |
173 | &dports); | |
174 | item = dp = &dports; | |
175 | } | |
176 | ||
177 | /* Deliver a copy of message to each destination port */ | |
178 | ||
179 | if (dp->count != 0) { | |
180 | if (dp->count == 1) { | |
181 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
182 | tipc_port_recv_msg(buf); |
183 | tipc_port_list_free(dp); | |
b97bf3fd PL |
184 | return; |
185 | } | |
186 | for (; cnt < dp->count; cnt++) { | |
187 | int index = cnt % PLSIZE; | |
188 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
189 | ||
190 | if (b == NULL) { | |
a10bd924 | 191 | warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
192 | msg_dbg(msg, "LOST:"); |
193 | goto exit; | |
194 | } | |
195 | if ((index == 0) && (cnt != 0)) { | |
196 | item = item->next; | |
197 | } | |
198 | msg_set_destport(buf_msg(b),item->ports[index]); | |
4323add6 | 199 | tipc_port_recv_msg(b); |
b97bf3fd PL |
200 | } |
201 | } | |
202 | exit: | |
203 | buf_discard(buf); | |
4323add6 | 204 | tipc_port_list_free(dp); |
b97bf3fd PL |
205 | } |
206 | ||
207 | /** | |
7ef43eba | 208 | * tipc_createport_raw - create a generic TIPC port |
c4307285 | 209 | * |
0ea52241 | 210 | * Returns pointer to (locked) TIPC port, or NULL if unable to create it |
b97bf3fd PL |
211 | */ |
212 | ||
0ea52241 | 213 | struct tipc_port *tipc_createport_raw(void *usr_handle, |
b97bf3fd PL |
214 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), |
215 | void (*wakeup)(struct tipc_port *), | |
0ea52241 | 216 | const u32 importance) |
b97bf3fd PL |
217 | { |
218 | struct port *p_ptr; | |
219 | struct tipc_msg *msg; | |
220 | u32 ref; | |
221 | ||
0da974f4 | 222 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 AS |
223 | if (!p_ptr) { |
224 | warn("Port creation failed, no memory\n"); | |
0ea52241 | 225 | return NULL; |
b97bf3fd | 226 | } |
4323add6 | 227 | ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock); |
b97bf3fd | 228 | if (!ref) { |
a10bd924 | 229 | warn("Port creation failed, reference table exhausted\n"); |
b97bf3fd | 230 | kfree(p_ptr); |
0ea52241 | 231 | return NULL; |
b97bf3fd PL |
232 | } |
233 | ||
05646c91 AS |
234 | p_ptr->publ.usr_handle = usr_handle; |
235 | p_ptr->publ.max_pkt = MAX_PKT_DEFAULT; | |
b97bf3fd PL |
236 | p_ptr->publ.ref = ref; |
237 | msg = &p_ptr->publ.phdr; | |
c68ca7b7 | 238 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, LONG_H_SIZE, 0); |
b97bf3fd | 239 | msg_set_origport(msg, ref); |
b97bf3fd PL |
240 | p_ptr->last_in_seqno = 41; |
241 | p_ptr->sent = 1; | |
b97bf3fd PL |
242 | INIT_LIST_HEAD(&p_ptr->wait_list); |
243 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd PL |
244 | p_ptr->dispatcher = dispatcher; |
245 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 246 | p_ptr->user_port = NULL; |
b97bf3fd | 247 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 248 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
249 | INIT_LIST_HEAD(&p_ptr->publications); |
250 | INIT_LIST_HEAD(&p_ptr->port_list); | |
251 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 | 252 | spin_unlock_bh(&tipc_port_list_lock); |
0ea52241 | 253 | return &(p_ptr->publ); |
b97bf3fd PL |
254 | } |
255 | ||
256 | int tipc_deleteport(u32 ref) | |
257 | { | |
258 | struct port *p_ptr; | |
1fc54d8f | 259 | struct sk_buff *buf = NULL; |
b97bf3fd | 260 | |
1fc54d8f | 261 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 262 | p_ptr = tipc_port_lock(ref); |
c4307285 | 263 | if (!p_ptr) |
b97bf3fd PL |
264 | return -EINVAL; |
265 | ||
4323add6 PL |
266 | tipc_ref_discard(ref); |
267 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
268 | |
269 | k_cancel_timer(&p_ptr->timer); | |
270 | if (p_ptr->publ.connected) { | |
271 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
4323add6 | 272 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd PL |
273 | } |
274 | if (p_ptr->user_port) { | |
4323add6 | 275 | tipc_reg_remove_port(p_ptr->user_port); |
b97bf3fd PL |
276 | kfree(p_ptr->user_port); |
277 | } | |
278 | ||
4323add6 | 279 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
280 | list_del(&p_ptr->port_list); |
281 | list_del(&p_ptr->wait_list); | |
4323add6 | 282 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
283 | k_term_timer(&p_ptr->timer); |
284 | kfree(p_ptr); | |
285 | dbg("Deleted port %u\n", ref); | |
4323add6 | 286 | tipc_net_route_msg(buf); |
0e35fd5e | 287 | return 0; |
b97bf3fd PL |
288 | } |
289 | ||
05790c64 | 290 | static int port_unreliable(struct port *p_ptr) |
b97bf3fd PL |
291 | { |
292 | return msg_src_droppable(&p_ptr->publ.phdr); | |
293 | } | |
294 | ||
295 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
296 | { | |
297 | struct port *p_ptr; | |
c4307285 | 298 | |
4323add6 | 299 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
300 | if (!p_ptr) |
301 | return -EINVAL; | |
302 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 303 | tipc_port_unlock(p_ptr); |
0e35fd5e | 304 | return 0; |
b97bf3fd PL |
305 | } |
306 | ||
307 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
308 | { | |
309 | struct port *p_ptr; | |
c4307285 | 310 | |
4323add6 | 311 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
312 | if (!p_ptr) |
313 | return -EINVAL; | |
314 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | |
4323add6 | 315 | tipc_port_unlock(p_ptr); |
0e35fd5e | 316 | return 0; |
b97bf3fd PL |
317 | } |
318 | ||
05790c64 | 319 | static int port_unreturnable(struct port *p_ptr) |
b97bf3fd PL |
320 | { |
321 | return msg_dest_droppable(&p_ptr->publ.phdr); | |
322 | } | |
323 | ||
324 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
325 | { | |
326 | struct port *p_ptr; | |
c4307285 | 327 | |
4323add6 | 328 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
329 | if (!p_ptr) |
330 | return -EINVAL; | |
331 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 332 | tipc_port_unlock(p_ptr); |
0e35fd5e | 333 | return 0; |
b97bf3fd PL |
334 | } |
335 | ||
336 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
337 | { | |
338 | struct port *p_ptr; | |
c4307285 | 339 | |
4323add6 | 340 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
341 | if (!p_ptr) |
342 | return -EINVAL; | |
343 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | |
4323add6 | 344 | tipc_port_unlock(p_ptr); |
0e35fd5e | 345 | return 0; |
b97bf3fd PL |
346 | } |
347 | ||
c4307285 YH |
348 | /* |
349 | * port_build_proto_msg(): build a port level protocol | |
350 | * or a connection abortion message. Called with | |
b97bf3fd PL |
351 | * tipc_port lock on. |
352 | */ | |
353 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
354 | u32 origport, u32 orignode, | |
c4307285 | 355 | u32 usr, u32 type, u32 err, |
b97bf3fd PL |
356 | u32 seqno, u32 ack) |
357 | { | |
358 | struct sk_buff *buf; | |
359 | struct tipc_msg *msg; | |
c4307285 | 360 | |
31e3c3f6 | 361 | buf = tipc_buf_acquire(LONG_H_SIZE); |
b97bf3fd PL |
362 | if (buf) { |
363 | msg = buf_msg(buf); | |
c68ca7b7 | 364 | tipc_msg_init(msg, usr, type, LONG_H_SIZE, destnode); |
75715217 | 365 | msg_set_errcode(msg, err); |
b97bf3fd PL |
366 | msg_set_destport(msg, destport); |
367 | msg_set_origport(msg, origport); | |
b97bf3fd PL |
368 | msg_set_orignode(msg, orignode); |
369 | msg_set_transp_seqno(msg, seqno); | |
370 | msg_set_msgcnt(msg, ack); | |
371 | msg_dbg(msg, "PORT>SEND>:"); | |
372 | } | |
373 | return buf; | |
374 | } | |
375 | ||
b97bf3fd PL |
376 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
377 | { | |
378 | struct tipc_msg *msg = buf_msg(buf); | |
379 | struct sk_buff *rbuf; | |
380 | struct tipc_msg *rmsg; | |
381 | int hdr_sz; | |
382 | u32 imp = msg_importance(msg); | |
383 | u32 data_sz = msg_data_sz(msg); | |
384 | ||
385 | if (data_sz > MAX_REJECT_SIZE) | |
386 | data_sz = MAX_REJECT_SIZE; | |
387 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
388 | imp++; | |
389 | msg_dbg(msg, "port->rej: "); | |
390 | ||
391 | /* discard rejected message if it shouldn't be returned to sender */ | |
392 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
393 | buf_discard(buf); | |
394 | return data_sz; | |
395 | } | |
396 | ||
397 | /* construct rejected message */ | |
398 | if (msg_mcast(msg)) | |
399 | hdr_sz = MCAST_H_SIZE; | |
400 | else | |
401 | hdr_sz = LONG_H_SIZE; | |
31e3c3f6 | 402 | rbuf = tipc_buf_acquire(data_sz + hdr_sz); |
b97bf3fd PL |
403 | if (rbuf == NULL) { |
404 | buf_discard(buf); | |
405 | return data_sz; | |
406 | } | |
407 | rmsg = buf_msg(rbuf); | |
c68ca7b7 | 408 | tipc_msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg)); |
75715217 | 409 | msg_set_errcode(rmsg, err); |
b97bf3fd | 410 | msg_set_destport(rmsg, msg_origport(msg)); |
b97bf3fd | 411 | msg_set_origport(rmsg, msg_destport(msg)); |
99c14593 | 412 | if (msg_short(msg)) { |
b97bf3fd | 413 | msg_set_orignode(rmsg, tipc_own_addr); |
99c14593 AS |
414 | /* leave name type & instance as zeroes */ |
415 | } else { | |
b97bf3fd | 416 | msg_set_orignode(rmsg, msg_destnode(msg)); |
99c14593 AS |
417 | msg_set_nametype(rmsg, msg_nametype(msg)); |
418 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
419 | } | |
c4307285 | 420 | msg_set_size(rmsg, data_sz + hdr_sz); |
27d7ff46 | 421 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
422 | |
423 | /* send self-abort message when rejecting on a connected port */ | |
424 | if (msg_connected(msg)) { | |
1fc54d8f | 425 | struct sk_buff *abuf = NULL; |
4323add6 | 426 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
427 | |
428 | if (p_ptr) { | |
429 | if (p_ptr->publ.connected) | |
430 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 431 | tipc_port_unlock(p_ptr); |
b97bf3fd | 432 | } |
4323add6 | 433 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
434 | } |
435 | ||
436 | /* send rejected message */ | |
437 | buf_discard(buf); | |
4323add6 | 438 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
439 | return data_sz; |
440 | } | |
441 | ||
4323add6 PL |
442 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
443 | struct iovec const *msg_sect, u32 num_sect, | |
444 | int err) | |
b97bf3fd PL |
445 | { |
446 | struct sk_buff *buf; | |
447 | int res; | |
448 | ||
c68ca7b7 | 449 | res = tipc_msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
450 | !p_ptr->user_port, &buf); |
451 | if (!buf) | |
452 | return res; | |
453 | ||
454 | return tipc_reject_msg(buf, err); | |
455 | } | |
456 | ||
457 | static void port_timeout(unsigned long ref) | |
458 | { | |
4323add6 | 459 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 460 | struct sk_buff *buf = NULL; |
b97bf3fd | 461 | |
065fd177 AS |
462 | if (!p_ptr) |
463 | return; | |
464 | ||
465 | if (!p_ptr->publ.connected) { | |
466 | tipc_port_unlock(p_ptr); | |
b97bf3fd | 467 | return; |
065fd177 | 468 | } |
b97bf3fd PL |
469 | |
470 | /* Last probe answered ? */ | |
471 | if (p_ptr->probing_state == PROBING) { | |
472 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
473 | } else { | |
474 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
475 | port_peernode(p_ptr), | |
476 | p_ptr->publ.ref, | |
477 | tipc_own_addr, | |
478 | CONN_MANAGER, | |
479 | CONN_PROBE, | |
c4307285 | 480 | TIPC_OK, |
b97bf3fd PL |
481 | port_out_seqno(p_ptr), |
482 | 0); | |
483 | port_incr_out_seqno(p_ptr); | |
484 | p_ptr->probing_state = PROBING; | |
485 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
486 | } | |
4323add6 PL |
487 | tipc_port_unlock(p_ptr); |
488 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
489 | } |
490 | ||
491 | ||
492 | static void port_handle_node_down(unsigned long ref) | |
493 | { | |
4323add6 | 494 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 495 | struct sk_buff* buf = NULL; |
b97bf3fd PL |
496 | |
497 | if (!p_ptr) | |
498 | return; | |
499 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
500 | tipc_port_unlock(p_ptr); |
501 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
502 | } |
503 | ||
504 | ||
505 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
506 | { | |
507 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
508 | ||
509 | if (!p_ptr->publ.connected) | |
1fc54d8f | 510 | return NULL; |
b97bf3fd PL |
511 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
512 | imp++; | |
513 | return port_build_proto_msg(p_ptr->publ.ref, | |
514 | tipc_own_addr, | |
515 | port_peerport(p_ptr), | |
516 | port_peernode(p_ptr), | |
517 | imp, | |
518 | TIPC_CONN_MSG, | |
c4307285 | 519 | err, |
b97bf3fd PL |
520 | p_ptr->last_in_seqno + 1, |
521 | 0); | |
522 | } | |
523 | ||
524 | ||
525 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
526 | { | |
527 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
528 | ||
529 | if (!p_ptr->publ.connected) | |
1fc54d8f | 530 | return NULL; |
b97bf3fd PL |
531 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
532 | imp++; | |
533 | return port_build_proto_msg(port_peerport(p_ptr), | |
534 | port_peernode(p_ptr), | |
535 | p_ptr->publ.ref, | |
536 | tipc_own_addr, | |
537 | imp, | |
538 | TIPC_CONN_MSG, | |
c4307285 | 539 | err, |
b97bf3fd PL |
540 | port_out_seqno(p_ptr), |
541 | 0); | |
542 | } | |
543 | ||
4323add6 | 544 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
545 | { |
546 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 547 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 548 | u32 err = TIPC_OK; |
1fc54d8f SR |
549 | struct sk_buff *r_buf = NULL; |
550 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd PL |
551 | |
552 | msg_dbg(msg, "PORT<RECV<:"); | |
553 | ||
554 | if (!p_ptr) { | |
555 | err = TIPC_ERR_NO_PORT; | |
556 | } else if (p_ptr->publ.connected) { | |
96d841b7 AS |
557 | if ((port_peernode(p_ptr) != msg_orignode(msg)) || |
558 | (port_peerport(p_ptr) != msg_origport(msg))) { | |
b97bf3fd | 559 | err = TIPC_ERR_NO_PORT; |
96d841b7 | 560 | } else if (msg_type(msg) == CONN_ACK) { |
c4307285 | 561 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
562 | p_ptr->publ.congested && |
563 | p_ptr->wakeup; | |
564 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 565 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
566 | goto exit; |
567 | p_ptr->publ.congested = 0; | |
568 | if (!wakeup) | |
569 | goto exit; | |
570 | p_ptr->wakeup(&p_ptr->publ); | |
571 | goto exit; | |
572 | } | |
573 | } else if (p_ptr->publ.published) { | |
574 | err = TIPC_ERR_NO_PORT; | |
575 | } | |
576 | if (err) { | |
577 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
578 | msg_orignode(msg), |
579 | msg_destport(msg), | |
b97bf3fd | 580 | tipc_own_addr, |
06d82c91 | 581 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
582 | TIPC_CONN_MSG, |
583 | err, | |
584 | 0, | |
585 | 0); | |
586 | goto exit; | |
587 | } | |
588 | ||
589 | /* All is fine */ | |
590 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
591 | r_buf = port_build_proto_msg(msg_origport(msg), |
592 | msg_orignode(msg), | |
593 | msg_destport(msg), | |
594 | tipc_own_addr, | |
b97bf3fd PL |
595 | CONN_MANAGER, |
596 | CONN_PROBE_REPLY, | |
597 | TIPC_OK, | |
598 | port_out_seqno(p_ptr), | |
599 | 0); | |
600 | } | |
601 | p_ptr->probing_state = CONFIRMED; | |
602 | port_incr_out_seqno(p_ptr); | |
603 | exit: | |
604 | if (p_ptr) | |
4323add6 PL |
605 | tipc_port_unlock(p_ptr); |
606 | tipc_net_route_msg(r_buf); | |
607 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
608 | buf_discard(buf); |
609 | } | |
610 | ||
611 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
612 | { | |
c4307285 | 613 | struct publication *publ; |
b97bf3fd PL |
614 | |
615 | if (full_id) | |
c4307285 | 616 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 617 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
c4307285 | 618 | tipc_node(tipc_own_addr), p_ptr->publ.ref); |
b97bf3fd PL |
619 | else |
620 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
621 | ||
c4307285 YH |
622 | if (p_ptr->publ.connected) { |
623 | u32 dport = port_peerport(p_ptr); | |
624 | u32 destnode = port_peernode(p_ptr); | |
625 | ||
626 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
627 | tipc_zone(destnode), tipc_cluster(destnode), | |
628 | tipc_node(destnode), dport); | |
629 | if (p_ptr->publ.conn_type != 0) | |
630 | tipc_printf(buf, " via {%u,%u}", | |
631 | p_ptr->publ.conn_type, | |
632 | p_ptr->publ.conn_instance); | |
633 | } | |
634 | else if (p_ptr->publ.published) { | |
635 | tipc_printf(buf, " bound to"); | |
636 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
637 | if (publ->lower == publ->upper) |
638 | tipc_printf(buf, " {%u,%u}", publ->type, | |
639 | publ->lower); | |
640 | else | |
c4307285 | 641 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 642 | publ->lower, publ->upper); |
c4307285 YH |
643 | } |
644 | } | |
645 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
646 | } |
647 | ||
648 | #define MAX_PORT_QUERY 32768 | |
649 | ||
4323add6 | 650 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
651 | { |
652 | struct sk_buff *buf; | |
653 | struct tlv_desc *rep_tlv; | |
654 | struct print_buf pb; | |
655 | struct port *p_ptr; | |
656 | int str_len; | |
657 | ||
4323add6 | 658 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
659 | if (!buf) |
660 | return NULL; | |
661 | rep_tlv = (struct tlv_desc *)buf->data; | |
662 | ||
4323add6 PL |
663 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
664 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
665 | list_for_each_entry(p_ptr, &ports, port_list) { |
666 | spin_lock_bh(p_ptr->publ.lock); | |
667 | port_print(p_ptr, &pb, 0); | |
668 | spin_unlock_bh(p_ptr->publ.lock); | |
669 | } | |
4323add6 PL |
670 | spin_unlock_bh(&tipc_port_list_lock); |
671 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
672 | |
673 | skb_put(buf, TLV_SPACE(str_len)); | |
674 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
675 | ||
676 | return buf; | |
677 | } | |
678 | ||
4323add6 | 679 | void tipc_port_reinit(void) |
b97bf3fd PL |
680 | { |
681 | struct port *p_ptr; | |
682 | struct tipc_msg *msg; | |
683 | ||
4323add6 | 684 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
685 | list_for_each_entry(p_ptr, &ports, port_list) { |
686 | msg = &p_ptr->publ.phdr; | |
687 | if (msg_orignode(msg) == tipc_own_addr) | |
688 | break; | |
6d4a6672 | 689 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
690 | msg_set_orignode(msg, tipc_own_addr); |
691 | } | |
4323add6 | 692 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
693 | } |
694 | ||
695 | ||
696 | /* | |
697 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
698 | * to the tipc_port interface. | |
699 | */ | |
700 | ||
701 | static void port_dispatcher_sigh(void *dummy) | |
702 | { | |
703 | struct sk_buff *buf; | |
704 | ||
705 | spin_lock_bh(&queue_lock); | |
706 | buf = msg_queue_head; | |
1fc54d8f | 707 | msg_queue_head = NULL; |
b97bf3fd PL |
708 | spin_unlock_bh(&queue_lock); |
709 | ||
710 | while (buf) { | |
711 | struct port *p_ptr; | |
712 | struct user_port *up_ptr; | |
713 | struct tipc_portid orig; | |
714 | struct tipc_name_seq dseq; | |
715 | void *usr_handle; | |
716 | int connected; | |
717 | int published; | |
9688243b | 718 | u32 message_type; |
b97bf3fd PL |
719 | |
720 | struct sk_buff *next = buf->next; | |
721 | struct tipc_msg *msg = buf_msg(buf); | |
722 | u32 dref = msg_destport(msg); | |
c4307285 | 723 | |
9688243b AS |
724 | message_type = msg_type(msg); |
725 | if (message_type > TIPC_DIRECT_MSG) | |
726 | goto reject; /* Unsupported message type */ | |
727 | ||
4323add6 | 728 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
729 | if (!p_ptr) |
730 | goto reject; /* Port deleted while msg in queue */ | |
731 | ||
b97bf3fd PL |
732 | orig.ref = msg_origport(msg); |
733 | orig.node = msg_orignode(msg); | |
734 | up_ptr = p_ptr->user_port; | |
735 | usr_handle = up_ptr->usr_handle; | |
736 | connected = p_ptr->publ.connected; | |
737 | published = p_ptr->publ.published; | |
738 | ||
739 | if (unlikely(msg_errcode(msg))) | |
740 | goto err; | |
741 | ||
9688243b | 742 | switch (message_type) { |
c4307285 | 743 | |
b97bf3fd PL |
744 | case TIPC_CONN_MSG:{ |
745 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
746 | u32 peer_port = port_peerport(p_ptr); | |
747 | u32 peer_node = port_peernode(p_ptr); | |
748 | ||
4cec72c8 | 749 | tipc_port_unlock(p_ptr); |
5307e469 AS |
750 | if (unlikely(!cb)) |
751 | goto reject; | |
b97bf3fd | 752 | if (unlikely(!connected)) { |
84b07c16 | 753 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 754 | goto reject; |
84b07c16 AS |
755 | } else if ((msg_origport(msg) != peer_port) || |
756 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 757 | goto reject; |
c4307285 | 758 | if (unlikely(++p_ptr->publ.conn_unacked >= |
b97bf3fd | 759 | TIPC_FLOW_CONTROL_WIN)) |
c4307285 | 760 | tipc_acknowledge(dref, |
b97bf3fd PL |
761 | p_ptr->publ.conn_unacked); |
762 | skb_pull(buf, msg_hdr_sz(msg)); | |
763 | cb(usr_handle, dref, &buf, msg_data(msg), | |
764 | msg_data_sz(msg)); | |
765 | break; | |
766 | } | |
767 | case TIPC_DIRECT_MSG:{ | |
768 | tipc_msg_event cb = up_ptr->msg_cb; | |
769 | ||
4cec72c8 | 770 | tipc_port_unlock(p_ptr); |
5307e469 | 771 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
772 | goto reject; |
773 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 774 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
775 | msg_data_sz(msg), msg_importance(msg), |
776 | &orig); | |
777 | break; | |
778 | } | |
9688243b | 779 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
780 | case TIPC_NAMED_MSG:{ |
781 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
782 | ||
4cec72c8 | 783 | tipc_port_unlock(p_ptr); |
5307e469 | 784 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
785 | goto reject; |
786 | dseq.type = msg_nametype(msg); | |
787 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
788 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
789 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 790 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 791 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
792 | msg_data_sz(msg), msg_importance(msg), |
793 | &orig, &dseq); | |
794 | break; | |
795 | } | |
796 | } | |
797 | if (buf) | |
798 | buf_discard(buf); | |
799 | buf = next; | |
800 | continue; | |
801 | err: | |
9688243b | 802 | switch (message_type) { |
c4307285 | 803 | |
b97bf3fd | 804 | case TIPC_CONN_MSG:{ |
c4307285 | 805 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
806 | up_ptr->conn_err_cb; |
807 | u32 peer_port = port_peerport(p_ptr); | |
808 | u32 peer_node = port_peernode(p_ptr); | |
809 | ||
4cec72c8 | 810 | tipc_port_unlock(p_ptr); |
5307e469 | 811 | if (!cb || !connected) |
b97bf3fd | 812 | break; |
5307e469 AS |
813 | if ((msg_origport(msg) != peer_port) || |
814 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
815 | break; |
816 | tipc_disconnect(dref); | |
817 | skb_pull(buf, msg_hdr_sz(msg)); | |
818 | cb(usr_handle, dref, &buf, msg_data(msg), | |
819 | msg_data_sz(msg), msg_errcode(msg)); | |
820 | break; | |
821 | } | |
822 | case TIPC_DIRECT_MSG:{ | |
823 | tipc_msg_err_event cb = up_ptr->err_cb; | |
824 | ||
4cec72c8 | 825 | tipc_port_unlock(p_ptr); |
5307e469 | 826 | if (!cb || connected) |
b97bf3fd PL |
827 | break; |
828 | skb_pull(buf, msg_hdr_sz(msg)); | |
829 | cb(usr_handle, dref, &buf, msg_data(msg), | |
830 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
831 | break; | |
832 | } | |
9688243b | 833 | case TIPC_MCAST_MSG: |
b97bf3fd | 834 | case TIPC_NAMED_MSG:{ |
c4307285 | 835 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
836 | up_ptr->named_err_cb; |
837 | ||
4cec72c8 | 838 | tipc_port_unlock(p_ptr); |
5307e469 | 839 | if (!cb || connected) |
b97bf3fd PL |
840 | break; |
841 | dseq.type = msg_nametype(msg); | |
842 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
843 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
844 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 845 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 846 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
847 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
848 | break; | |
849 | } | |
850 | } | |
851 | if (buf) | |
852 | buf_discard(buf); | |
853 | buf = next; | |
854 | continue; | |
855 | reject: | |
856 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
857 | buf = next; | |
858 | } | |
859 | } | |
860 | ||
861 | /* | |
862 | * port_dispatcher(): Dispatcher for messages destinated | |
863 | * to the tipc_port interface. Called with port locked. | |
864 | */ | |
865 | ||
866 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
867 | { | |
868 | buf->next = NULL; | |
869 | spin_lock_bh(&queue_lock); | |
870 | if (msg_queue_head) { | |
871 | msg_queue_tail->next = buf; | |
872 | msg_queue_tail = buf; | |
873 | } else { | |
874 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 875 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
876 | } |
877 | spin_unlock_bh(&queue_lock); | |
0e35fd5e | 878 | return 0; |
b97bf3fd PL |
879 | } |
880 | ||
c4307285 | 881 | /* |
b97bf3fd | 882 | * Wake up port after congestion: Called with port locked, |
c4307285 | 883 | * |
b97bf3fd PL |
884 | */ |
885 | ||
886 | static void port_wakeup_sh(unsigned long ref) | |
887 | { | |
888 | struct port *p_ptr; | |
889 | struct user_port *up_ptr; | |
1fc54d8f SR |
890 | tipc_continue_event cb = NULL; |
891 | void *uh = NULL; | |
b97bf3fd | 892 | |
4323add6 | 893 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
894 | if (p_ptr) { |
895 | up_ptr = p_ptr->user_port; | |
896 | if (up_ptr) { | |
897 | cb = up_ptr->continue_event_cb; | |
898 | uh = up_ptr->usr_handle; | |
899 | } | |
4323add6 | 900 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
901 | } |
902 | if (cb) | |
903 | cb(uh, ref); | |
904 | } | |
905 | ||
906 | ||
907 | static void port_wakeup(struct tipc_port *p_ptr) | |
908 | { | |
4323add6 | 909 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
910 | } |
911 | ||
912 | void tipc_acknowledge(u32 ref, u32 ack) | |
913 | { | |
914 | struct port *p_ptr; | |
1fc54d8f | 915 | struct sk_buff *buf = NULL; |
b97bf3fd | 916 | |
4323add6 | 917 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
918 | if (!p_ptr) |
919 | return; | |
920 | if (p_ptr->publ.connected) { | |
921 | p_ptr->publ.conn_unacked -= ack; | |
922 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
923 | port_peernode(p_ptr), | |
924 | ref, | |
925 | tipc_own_addr, | |
926 | CONN_MANAGER, | |
927 | CONN_ACK, | |
c4307285 | 928 | TIPC_OK, |
b97bf3fd PL |
929 | port_out_seqno(p_ptr), |
930 | ack); | |
931 | } | |
4323add6 PL |
932 | tipc_port_unlock(p_ptr); |
933 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
934 | } |
935 | ||
936 | /* | |
937 | * tipc_createport(): user level call. Will add port to | |
938 | * registry if non-zero user_ref. | |
939 | */ | |
940 | ||
c4307285 YH |
941 | int tipc_createport(u32 user_ref, |
942 | void *usr_handle, | |
943 | unsigned int importance, | |
944 | tipc_msg_err_event error_cb, | |
945 | tipc_named_msg_err_event named_error_cb, | |
946 | tipc_conn_shutdown_event conn_error_cb, | |
947 | tipc_msg_event msg_cb, | |
948 | tipc_named_msg_event named_msg_cb, | |
949 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
950 | tipc_continue_event continue_event_cb,/* May be zero */ |
951 | u32 *portref) | |
952 | { | |
953 | struct user_port *up_ptr; | |
c4307285 | 954 | struct port *p_ptr; |
b97bf3fd | 955 | |
0da974f4 | 956 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 957 | if (!up_ptr) { |
a75bf874 | 958 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
959 | return -ENOMEM; |
960 | } | |
0ea52241 AS |
961 | p_ptr = (struct port *)tipc_createport_raw(NULL, port_dispatcher, |
962 | port_wakeup, importance); | |
963 | if (!p_ptr) { | |
b97bf3fd PL |
964 | kfree(up_ptr); |
965 | return -ENOMEM; | |
966 | } | |
967 | ||
968 | p_ptr->user_port = up_ptr; | |
969 | up_ptr->user_ref = user_ref; | |
970 | up_ptr->usr_handle = usr_handle; | |
971 | up_ptr->ref = p_ptr->publ.ref; | |
972 | up_ptr->err_cb = error_cb; | |
973 | up_ptr->named_err_cb = named_error_cb; | |
974 | up_ptr->conn_err_cb = conn_error_cb; | |
975 | up_ptr->msg_cb = msg_cb; | |
976 | up_ptr->named_msg_cb = named_msg_cb; | |
977 | up_ptr->conn_msg_cb = conn_msg_cb; | |
978 | up_ptr->continue_event_cb = continue_event_cb; | |
979 | INIT_LIST_HEAD(&up_ptr->uport_list); | |
4323add6 | 980 | tipc_reg_add_port(up_ptr); |
b97bf3fd | 981 | *portref = p_ptr->publ.ref; |
4323add6 | 982 | tipc_port_unlock(p_ptr); |
0e35fd5e | 983 | return 0; |
b97bf3fd PL |
984 | } |
985 | ||
b97bf3fd PL |
986 | int tipc_portimportance(u32 ref, unsigned int *importance) |
987 | { | |
988 | struct port *p_ptr; | |
c4307285 | 989 | |
4323add6 | 990 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
991 | if (!p_ptr) |
992 | return -EINVAL; | |
993 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
4cec72c8 | 994 | tipc_port_unlock(p_ptr); |
0e35fd5e | 995 | return 0; |
b97bf3fd PL |
996 | } |
997 | ||
998 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
999 | { | |
1000 | struct port *p_ptr; | |
1001 | ||
1002 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
1003 | return -EINVAL; | |
1004 | ||
4323add6 | 1005 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1006 | if (!p_ptr) |
1007 | return -EINVAL; | |
1008 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
4cec72c8 | 1009 | tipc_port_unlock(p_ptr); |
0e35fd5e | 1010 | return 0; |
b97bf3fd PL |
1011 | } |
1012 | ||
1013 | ||
1014 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1015 | { | |
1016 | struct port *p_ptr; | |
1017 | struct publication *publ; | |
1018 | u32 key; | |
1019 | int res = -EINVAL; | |
1020 | ||
4323add6 | 1021 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
1022 | if (!p_ptr) |
1023 | return -EINVAL; | |
1024 | ||
b97bf3fd PL |
1025 | dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, " |
1026 | "lower = %u, upper = %u\n", | |
1027 | ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper); | |
b97bf3fd PL |
1028 | if (p_ptr->publ.connected) |
1029 | goto exit; | |
1030 | if (seq->lower > seq->upper) | |
1031 | goto exit; | |
1032 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1033 | goto exit; | |
1034 | key = ref + p_ptr->pub_count + 1; | |
1035 | if (key == ref) { | |
1036 | res = -EADDRINUSE; | |
1037 | goto exit; | |
1038 | } | |
4323add6 PL |
1039 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1040 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1041 | if (publ) { |
1042 | list_add(&publ->pport_list, &p_ptr->publications); | |
1043 | p_ptr->pub_count++; | |
1044 | p_ptr->publ.published = 1; | |
0e35fd5e | 1045 | res = 0; |
b97bf3fd PL |
1046 | } |
1047 | exit: | |
4323add6 | 1048 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1049 | return res; |
1050 | } | |
1051 | ||
1052 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1053 | { | |
1054 | struct port *p_ptr; | |
1055 | struct publication *publ; | |
1056 | struct publication *tpubl; | |
1057 | int res = -EINVAL; | |
c4307285 | 1058 | |
4323add6 | 1059 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1060 | if (!p_ptr) |
1061 | return -EINVAL; | |
b97bf3fd | 1062 | if (!seq) { |
c4307285 | 1063 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1064 | &p_ptr->publications, pport_list) { |
c4307285 | 1065 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1066 | publ->ref, publ->key); |
b97bf3fd | 1067 | } |
0e35fd5e | 1068 | res = 0; |
b97bf3fd | 1069 | } else { |
c4307285 | 1070 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1071 | &p_ptr->publications, pport_list) { |
1072 | if (publ->scope != scope) | |
1073 | continue; | |
1074 | if (publ->type != seq->type) | |
1075 | continue; | |
1076 | if (publ->lower != seq->lower) | |
1077 | continue; | |
1078 | if (publ->upper != seq->upper) | |
1079 | break; | |
c4307285 | 1080 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1081 | publ->ref, publ->key); |
0e35fd5e | 1082 | res = 0; |
b97bf3fd PL |
1083 | break; |
1084 | } | |
1085 | } | |
1086 | if (list_empty(&p_ptr->publications)) | |
1087 | p_ptr->publ.published = 0; | |
4323add6 | 1088 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1089 | return res; |
1090 | } | |
1091 | ||
1092 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1093 | { | |
1094 | struct port *p_ptr; | |
1095 | struct tipc_msg *msg; | |
1096 | int res = -EINVAL; | |
1097 | ||
4323add6 | 1098 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1099 | if (!p_ptr) |
1100 | return -EINVAL; | |
1101 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1102 | goto exit; | |
1103 | if (!peer->ref) | |
1104 | goto exit; | |
1105 | ||
1106 | msg = &p_ptr->publ.phdr; | |
1107 | msg_set_destnode(msg, peer->node); | |
1108 | msg_set_destport(msg, peer->ref); | |
1109 | msg_set_orignode(msg, tipc_own_addr); | |
1110 | msg_set_origport(msg, p_ptr->publ.ref); | |
1111 | msg_set_transp_seqno(msg, 42); | |
1112 | msg_set_type(msg, TIPC_CONN_MSG); | |
1113 | if (!may_route(peer->node)) | |
1114 | msg_set_hdr_sz(msg, SHORT_H_SIZE); | |
1115 | else | |
1116 | msg_set_hdr_sz(msg, LONG_H_SIZE); | |
1117 | ||
1118 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1119 | p_ptr->probing_state = CONFIRMED; | |
1120 | p_ptr->publ.connected = 1; | |
1121 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1122 | ||
4323add6 | 1123 | tipc_nodesub_subscribe(&p_ptr->subscription,peer->node, |
880b005f | 1124 | (void *)(unsigned long)ref, |
b97bf3fd | 1125 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 1126 | res = 0; |
b97bf3fd | 1127 | exit: |
4323add6 | 1128 | tipc_port_unlock(p_ptr); |
05646c91 | 1129 | p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1130 | return res; |
1131 | } | |
1132 | ||
0c3141e9 AS |
1133 | /** |
1134 | * tipc_disconnect_port - disconnect port from peer | |
1135 | * | |
1136 | * Port must be locked. | |
1137 | */ | |
1138 | ||
1139 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1140 | { | |
1141 | int res; | |
1142 | ||
1143 | if (tp_ptr->connected) { | |
1144 | tp_ptr->connected = 0; | |
1145 | /* let timer expire on it's own to avoid deadlock! */ | |
1146 | tipc_nodesub_unsubscribe( | |
1147 | &((struct port *)tp_ptr)->subscription); | |
0e35fd5e | 1148 | res = 0; |
0c3141e9 AS |
1149 | } else { |
1150 | res = -ENOTCONN; | |
1151 | } | |
1152 | return res; | |
1153 | } | |
1154 | ||
b97bf3fd PL |
1155 | /* |
1156 | * tipc_disconnect(): Disconnect port form peer. | |
1157 | * This is a node local operation. | |
1158 | */ | |
1159 | ||
1160 | int tipc_disconnect(u32 ref) | |
1161 | { | |
1162 | struct port *p_ptr; | |
0c3141e9 | 1163 | int res; |
b97bf3fd | 1164 | |
4323add6 | 1165 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1166 | if (!p_ptr) |
1167 | return -EINVAL; | |
0c3141e9 | 1168 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1169 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1170 | return res; |
1171 | } | |
1172 | ||
1173 | /* | |
1174 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1175 | */ | |
1176 | int tipc_shutdown(u32 ref) | |
1177 | { | |
1178 | struct port *p_ptr; | |
1fc54d8f | 1179 | struct sk_buff *buf = NULL; |
b97bf3fd | 1180 | |
4323add6 | 1181 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1182 | if (!p_ptr) |
1183 | return -EINVAL; | |
1184 | ||
1185 | if (p_ptr->publ.connected) { | |
1186 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1187 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1188 | imp++; | |
1189 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1190 | port_peernode(p_ptr), | |
1191 | ref, | |
1192 | tipc_own_addr, | |
1193 | imp, | |
1194 | TIPC_CONN_MSG, | |
c4307285 | 1195 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1196 | port_out_seqno(p_ptr), |
1197 | 0); | |
1198 | } | |
4323add6 PL |
1199 | tipc_port_unlock(p_ptr); |
1200 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1201 | return tipc_disconnect(ref); |
1202 | } | |
1203 | ||
b97bf3fd | 1204 | /* |
4323add6 | 1205 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1206 | * message for this node. |
1207 | */ | |
1208 | ||
31e3c3f6 | 1209 | static int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
1210 | struct iovec const *msg_sect) | |
b97bf3fd PL |
1211 | { |
1212 | struct sk_buff *buf; | |
1213 | int res; | |
c4307285 | 1214 | |
c68ca7b7 | 1215 | res = tipc_msg_build(&sender->publ.phdr, msg_sect, num_sect, |
b97bf3fd PL |
1216 | MAX_MSG_SIZE, !sender->user_port, &buf); |
1217 | if (likely(buf)) | |
4323add6 | 1218 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1219 | return res; |
1220 | } | |
1221 | ||
1222 | /** | |
1223 | * tipc_send - send message sections on connection | |
1224 | */ | |
1225 | ||
1226 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1227 | { | |
1228 | struct port *p_ptr; | |
1229 | u32 destnode; | |
1230 | int res; | |
1231 | ||
4323add6 | 1232 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1233 | if (!p_ptr || !p_ptr->publ.connected) |
1234 | return -EINVAL; | |
1235 | ||
1236 | p_ptr->publ.congested = 1; | |
4323add6 | 1237 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1238 | destnode = port_peernode(p_ptr); |
1239 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1240 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1241 | destnode); | |
b97bf3fd | 1242 | else |
4323add6 | 1243 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1244 | |
1245 | if (likely(res != -ELINKCONG)) { | |
1246 | port_incr_out_seqno(p_ptr); | |
1247 | p_ptr->publ.congested = 0; | |
1248 | p_ptr->sent++; | |
1249 | return res; | |
1250 | } | |
1251 | } | |
1252 | if (port_unreliable(p_ptr)) { | |
1253 | p_ptr->publ.congested = 0; | |
1254 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1255 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1256 | } |
1257 | return -ELINKCONG; | |
1258 | } | |
1259 | ||
b97bf3fd | 1260 | /** |
12bae479 | 1261 | * tipc_send2name - send message sections to port name |
b97bf3fd PL |
1262 | */ |
1263 | ||
12bae479 AS |
1264 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
1265 | unsigned int num_sect, struct iovec const *msg_sect) | |
b97bf3fd PL |
1266 | { |
1267 | struct port *p_ptr; | |
1268 | struct tipc_msg *msg; | |
1269 | u32 destnode = domain; | |
9ccc2eb4 | 1270 | u32 destport; |
b97bf3fd PL |
1271 | int res; |
1272 | ||
4323add6 | 1273 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1274 | if (!p_ptr || p_ptr->publ.connected) |
1275 | return -EINVAL; | |
1276 | ||
1277 | msg = &p_ptr->publ.phdr; | |
1278 | msg_set_type(msg, TIPC_NAMED_MSG); | |
12bae479 AS |
1279 | msg_set_orignode(msg, tipc_own_addr); |
1280 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1281 | msg_set_hdr_sz(msg, LONG_H_SIZE); |
1282 | msg_set_nametype(msg, name->type); | |
1283 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 1284 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 1285 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1286 | msg_set_destnode(msg, destnode); |
1287 | msg_set_destport(msg, destport); | |
1288 | ||
5d9c54c1 | 1289 | if (likely(destport)) { |
b97bf3fd PL |
1290 | p_ptr->sent++; |
1291 | if (likely(destnode == tipc_own_addr)) | |
4323add6 | 1292 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
c4307285 | 1293 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
4323add6 | 1294 | destnode); |
b97bf3fd PL |
1295 | if (likely(res != -ELINKCONG)) |
1296 | return res; | |
1297 | if (port_unreliable(p_ptr)) { | |
1298 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1299 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1300 | } |
1301 | return -ELINKCONG; | |
1302 | } | |
c4307285 | 1303 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1304 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1305 | } |
1306 | ||
1307 | /** | |
12bae479 | 1308 | * tipc_send2port - send message sections to port identity |
b97bf3fd PL |
1309 | */ |
1310 | ||
12bae479 AS |
1311 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
1312 | unsigned int num_sect, struct iovec const *msg_sect) | |
b97bf3fd PL |
1313 | { |
1314 | struct port *p_ptr; | |
1315 | struct tipc_msg *msg; | |
1316 | int res; | |
1317 | ||
4323add6 | 1318 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1319 | if (!p_ptr || p_ptr->publ.connected) |
1320 | return -EINVAL; | |
1321 | ||
1322 | msg = &p_ptr->publ.phdr; | |
1323 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
12bae479 AS |
1324 | msg_set_orignode(msg, tipc_own_addr); |
1325 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1326 | msg_set_destnode(msg, dest->node); |
1327 | msg_set_destport(msg, dest->ref); | |
1328 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
b97bf3fd PL |
1329 | p_ptr->sent++; |
1330 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1331 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1332 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1333 | if (likely(res != -ELINKCONG)) |
1334 | return res; | |
1335 | if (port_unreliable(p_ptr)) { | |
1336 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1337 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1338 | } |
1339 | return -ELINKCONG; | |
1340 | } | |
1341 | ||
c4307285 | 1342 | /** |
12bae479 | 1343 | * tipc_send_buf2port - send message buffer to port identity |
b97bf3fd PL |
1344 | */ |
1345 | ||
12bae479 AS |
1346 | int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest, |
1347 | struct sk_buff *buf, unsigned int dsz) | |
b97bf3fd PL |
1348 | { |
1349 | struct port *p_ptr; | |
1350 | struct tipc_msg *msg; | |
1351 | int res; | |
1352 | ||
4323add6 | 1353 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1354 | if (!p_ptr || p_ptr->publ.connected) |
1355 | return -EINVAL; | |
1356 | ||
1357 | msg = &p_ptr->publ.phdr; | |
1358 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
12bae479 AS |
1359 | msg_set_orignode(msg, tipc_own_addr); |
1360 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1361 | msg_set_destnode(msg, dest->node); |
1362 | msg_set_destport(msg, dest->ref); | |
1363 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
b97bf3fd PL |
1364 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); |
1365 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1366 | return -ENOMEM; | |
1367 | ||
1368 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1369 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
b97bf3fd PL |
1370 | msg_dbg(msg, "buf2port: "); |
1371 | p_ptr->sent++; | |
1372 | if (dest->node == tipc_own_addr) | |
4323add6 | 1373 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1374 | res = tipc_send_buf_fast(buf, dest->node); |
1375 | if (likely(res != -ELINKCONG)) | |
1376 | return res; | |
1377 | if (port_unreliable(p_ptr)) | |
1378 | return dsz; | |
1379 | return -ELINKCONG; | |
1380 | } | |
1381 |