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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 | 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 | ||
e3ec9c7d AS |
49 | static struct sk_buff *msg_queue_head; |
50 | static struct sk_buff *msg_queue_tail; | |
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 | 56 | static void port_handle_node_down(unsigned long ref); |
0e65967e AS |
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); | |
b97bf3fd PL |
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); |
a016892c | 134 | if ((res < 0) && (dports.count != 0)) |
b97bf3fd | 135 | buf_discard(ibuf); |
b97bf3fd PL |
136 | } else { |
137 | ibuf = buf; | |
138 | } | |
139 | ||
140 | if (res >= 0) { | |
141 | if (ibuf) | |
4323add6 | 142 | tipc_port_recv_mcast(ibuf, &dports); |
b97bf3fd | 143 | } else { |
4323add6 | 144 | tipc_port_list_free(&dports); |
b97bf3fd PL |
145 | } |
146 | return res; | |
147 | } | |
148 | ||
149 | /** | |
4323add6 | 150 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
c4307285 | 151 | * |
b97bf3fd PL |
152 | * If there is no port list, perform a lookup to create one |
153 | */ | |
154 | ||
4323add6 | 155 | void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp) |
b97bf3fd | 156 | { |
0e65967e | 157 | struct tipc_msg *msg; |
b97bf3fd PL |
158 | struct port_list dports = {0, NULL, }; |
159 | struct port_list *item = dp; | |
160 | int cnt = 0; | |
161 | ||
b97bf3fd PL |
162 | msg = buf_msg(buf); |
163 | ||
164 | /* Create destination port list, if one wasn't supplied */ | |
165 | ||
166 | if (dp == NULL) { | |
4323add6 | 167 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
168 | msg_namelower(msg), |
169 | msg_nameupper(msg), | |
170 | TIPC_CLUSTER_SCOPE, | |
171 | &dports); | |
172 | item = dp = &dports; | |
173 | } | |
174 | ||
175 | /* Deliver a copy of message to each destination port */ | |
176 | ||
177 | if (dp->count != 0) { | |
178 | if (dp->count == 1) { | |
179 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
180 | tipc_port_recv_msg(buf); |
181 | tipc_port_list_free(dp); | |
b97bf3fd PL |
182 | return; |
183 | } | |
184 | for (; cnt < dp->count; cnt++) { | |
185 | int index = cnt % PLSIZE; | |
186 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
187 | ||
188 | if (b == NULL) { | |
a10bd924 | 189 | warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
190 | goto exit; |
191 | } | |
a016892c | 192 | if ((index == 0) && (cnt != 0)) |
b97bf3fd | 193 | item = item->next; |
0e65967e | 194 | msg_set_destport(buf_msg(b), item->ports[index]); |
4323add6 | 195 | tipc_port_recv_msg(b); |
b97bf3fd PL |
196 | } |
197 | } | |
198 | exit: | |
199 | buf_discard(buf); | |
4323add6 | 200 | tipc_port_list_free(dp); |
b97bf3fd PL |
201 | } |
202 | ||
203 | /** | |
7ef43eba | 204 | * tipc_createport_raw - create a generic TIPC port |
c4307285 | 205 | * |
0ea52241 | 206 | * Returns pointer to (locked) TIPC port, or NULL if unable to create it |
b97bf3fd PL |
207 | */ |
208 | ||
0ea52241 | 209 | struct tipc_port *tipc_createport_raw(void *usr_handle, |
b97bf3fd PL |
210 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), |
211 | void (*wakeup)(struct tipc_port *), | |
0ea52241 | 212 | const u32 importance) |
b97bf3fd PL |
213 | { |
214 | struct port *p_ptr; | |
215 | struct tipc_msg *msg; | |
216 | u32 ref; | |
217 | ||
0da974f4 | 218 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 AS |
219 | if (!p_ptr) { |
220 | warn("Port creation failed, no memory\n"); | |
0ea52241 | 221 | return NULL; |
b97bf3fd | 222 | } |
4323add6 | 223 | ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock); |
b97bf3fd | 224 | if (!ref) { |
a10bd924 | 225 | warn("Port creation failed, reference table exhausted\n"); |
b97bf3fd | 226 | kfree(p_ptr); |
0ea52241 | 227 | return NULL; |
b97bf3fd PL |
228 | } |
229 | ||
05646c91 AS |
230 | p_ptr->publ.usr_handle = usr_handle; |
231 | p_ptr->publ.max_pkt = MAX_PKT_DEFAULT; | |
b97bf3fd PL |
232 | p_ptr->publ.ref = ref; |
233 | msg = &p_ptr->publ.phdr; | |
c68ca7b7 | 234 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, LONG_H_SIZE, 0); |
b97bf3fd | 235 | msg_set_origport(msg, ref); |
b97bf3fd PL |
236 | p_ptr->last_in_seqno = 41; |
237 | p_ptr->sent = 1; | |
b97bf3fd PL |
238 | INIT_LIST_HEAD(&p_ptr->wait_list); |
239 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd PL |
240 | p_ptr->dispatcher = dispatcher; |
241 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 242 | p_ptr->user_port = NULL; |
b97bf3fd | 243 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 244 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
245 | INIT_LIST_HEAD(&p_ptr->publications); |
246 | INIT_LIST_HEAD(&p_ptr->port_list); | |
247 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 | 248 | spin_unlock_bh(&tipc_port_list_lock); |
0ea52241 | 249 | return &(p_ptr->publ); |
b97bf3fd PL |
250 | } |
251 | ||
252 | int tipc_deleteport(u32 ref) | |
253 | { | |
254 | struct port *p_ptr; | |
1fc54d8f | 255 | struct sk_buff *buf = NULL; |
b97bf3fd | 256 | |
1fc54d8f | 257 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 258 | p_ptr = tipc_port_lock(ref); |
c4307285 | 259 | if (!p_ptr) |
b97bf3fd PL |
260 | return -EINVAL; |
261 | ||
4323add6 PL |
262 | tipc_ref_discard(ref); |
263 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
264 | |
265 | k_cancel_timer(&p_ptr->timer); | |
266 | if (p_ptr->publ.connected) { | |
267 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
4323add6 | 268 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd | 269 | } |
e83504f7 | 270 | kfree(p_ptr->user_port); |
b97bf3fd | 271 | |
4323add6 | 272 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
273 | list_del(&p_ptr->port_list); |
274 | list_del(&p_ptr->wait_list); | |
4323add6 | 275 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
276 | k_term_timer(&p_ptr->timer); |
277 | kfree(p_ptr); | |
4323add6 | 278 | tipc_net_route_msg(buf); |
0e35fd5e | 279 | return 0; |
b97bf3fd PL |
280 | } |
281 | ||
05790c64 | 282 | static int port_unreliable(struct port *p_ptr) |
b97bf3fd PL |
283 | { |
284 | return msg_src_droppable(&p_ptr->publ.phdr); | |
285 | } | |
286 | ||
287 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
288 | { | |
289 | struct port *p_ptr; | |
c4307285 | 290 | |
4323add6 | 291 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
292 | if (!p_ptr) |
293 | return -EINVAL; | |
294 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 295 | tipc_port_unlock(p_ptr); |
0e35fd5e | 296 | return 0; |
b97bf3fd PL |
297 | } |
298 | ||
299 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
300 | { | |
301 | struct port *p_ptr; | |
c4307285 | 302 | |
4323add6 | 303 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
304 | if (!p_ptr) |
305 | return -EINVAL; | |
306 | msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0)); | |
4323add6 | 307 | tipc_port_unlock(p_ptr); |
0e35fd5e | 308 | return 0; |
b97bf3fd PL |
309 | } |
310 | ||
05790c64 | 311 | static int port_unreturnable(struct port *p_ptr) |
b97bf3fd PL |
312 | { |
313 | return msg_dest_droppable(&p_ptr->publ.phdr); | |
314 | } | |
315 | ||
316 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
317 | { | |
318 | struct port *p_ptr; | |
c4307285 | 319 | |
4323add6 | 320 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
321 | if (!p_ptr) |
322 | return -EINVAL; | |
323 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 324 | tipc_port_unlock(p_ptr); |
0e35fd5e | 325 | return 0; |
b97bf3fd PL |
326 | } |
327 | ||
328 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
329 | { | |
330 | struct port *p_ptr; | |
c4307285 | 331 | |
4323add6 | 332 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
333 | if (!p_ptr) |
334 | return -EINVAL; | |
335 | msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0)); | |
4323add6 | 336 | tipc_port_unlock(p_ptr); |
0e35fd5e | 337 | return 0; |
b97bf3fd PL |
338 | } |
339 | ||
c4307285 YH |
340 | /* |
341 | * port_build_proto_msg(): build a port level protocol | |
342 | * or a connection abortion message. Called with | |
b97bf3fd PL |
343 | * tipc_port lock on. |
344 | */ | |
345 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
346 | u32 origport, u32 orignode, | |
c4307285 | 347 | u32 usr, u32 type, u32 err, |
b97bf3fd PL |
348 | u32 seqno, u32 ack) |
349 | { | |
350 | struct sk_buff *buf; | |
351 | struct tipc_msg *msg; | |
c4307285 | 352 | |
31e3c3f6 | 353 | buf = tipc_buf_acquire(LONG_H_SIZE); |
b97bf3fd PL |
354 | if (buf) { |
355 | msg = buf_msg(buf); | |
c68ca7b7 | 356 | tipc_msg_init(msg, usr, type, LONG_H_SIZE, destnode); |
75715217 | 357 | msg_set_errcode(msg, err); |
b97bf3fd PL |
358 | msg_set_destport(msg, destport); |
359 | msg_set_origport(msg, origport); | |
b97bf3fd PL |
360 | msg_set_orignode(msg, orignode); |
361 | msg_set_transp_seqno(msg, seqno); | |
362 | msg_set_msgcnt(msg, ack); | |
b97bf3fd PL |
363 | } |
364 | return buf; | |
365 | } | |
366 | ||
b97bf3fd PL |
367 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
368 | { | |
369 | struct tipc_msg *msg = buf_msg(buf); | |
370 | struct sk_buff *rbuf; | |
371 | struct tipc_msg *rmsg; | |
372 | int hdr_sz; | |
373 | u32 imp = msg_importance(msg); | |
374 | u32 data_sz = msg_data_sz(msg); | |
375 | ||
376 | if (data_sz > MAX_REJECT_SIZE) | |
377 | data_sz = MAX_REJECT_SIZE; | |
378 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
379 | imp++; | |
b97bf3fd PL |
380 | |
381 | /* discard rejected message if it shouldn't be returned to sender */ | |
382 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
383 | buf_discard(buf); | |
384 | return data_sz; | |
385 | } | |
386 | ||
387 | /* construct rejected message */ | |
388 | if (msg_mcast(msg)) | |
389 | hdr_sz = MCAST_H_SIZE; | |
390 | else | |
391 | hdr_sz = LONG_H_SIZE; | |
31e3c3f6 | 392 | rbuf = tipc_buf_acquire(data_sz + hdr_sz); |
b97bf3fd PL |
393 | if (rbuf == NULL) { |
394 | buf_discard(buf); | |
395 | return data_sz; | |
396 | } | |
397 | rmsg = buf_msg(rbuf); | |
c68ca7b7 | 398 | tipc_msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg)); |
75715217 | 399 | msg_set_errcode(rmsg, err); |
b97bf3fd | 400 | msg_set_destport(rmsg, msg_origport(msg)); |
b97bf3fd | 401 | msg_set_origport(rmsg, msg_destport(msg)); |
99c14593 | 402 | if (msg_short(msg)) { |
b97bf3fd | 403 | msg_set_orignode(rmsg, tipc_own_addr); |
99c14593 AS |
404 | /* leave name type & instance as zeroes */ |
405 | } else { | |
b97bf3fd | 406 | msg_set_orignode(rmsg, msg_destnode(msg)); |
99c14593 AS |
407 | msg_set_nametype(rmsg, msg_nametype(msg)); |
408 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
409 | } | |
c4307285 | 410 | msg_set_size(rmsg, data_sz + hdr_sz); |
27d7ff46 | 411 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
412 | |
413 | /* send self-abort message when rejecting on a connected port */ | |
414 | if (msg_connected(msg)) { | |
1fc54d8f | 415 | struct sk_buff *abuf = NULL; |
4323add6 | 416 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
417 | |
418 | if (p_ptr) { | |
419 | if (p_ptr->publ.connected) | |
420 | abuf = port_build_self_abort_msg(p_ptr, err); | |
4323add6 | 421 | tipc_port_unlock(p_ptr); |
b97bf3fd | 422 | } |
4323add6 | 423 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
424 | } |
425 | ||
426 | /* send rejected message */ | |
427 | buf_discard(buf); | |
4323add6 | 428 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
429 | return data_sz; |
430 | } | |
431 | ||
4323add6 PL |
432 | int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr, |
433 | struct iovec const *msg_sect, u32 num_sect, | |
434 | int err) | |
b97bf3fd PL |
435 | { |
436 | struct sk_buff *buf; | |
437 | int res; | |
438 | ||
c68ca7b7 | 439 | res = tipc_msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
440 | !p_ptr->user_port, &buf); |
441 | if (!buf) | |
442 | return res; | |
443 | ||
444 | return tipc_reject_msg(buf, err); | |
445 | } | |
446 | ||
447 | static void port_timeout(unsigned long ref) | |
448 | { | |
4323add6 | 449 | struct port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 450 | struct sk_buff *buf = NULL; |
b97bf3fd | 451 | |
065fd177 AS |
452 | if (!p_ptr) |
453 | return; | |
454 | ||
455 | if (!p_ptr->publ.connected) { | |
456 | tipc_port_unlock(p_ptr); | |
b97bf3fd | 457 | return; |
065fd177 | 458 | } |
b97bf3fd PL |
459 | |
460 | /* Last probe answered ? */ | |
461 | if (p_ptr->probing_state == PROBING) { | |
462 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
463 | } else { | |
464 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
465 | port_peernode(p_ptr), | |
466 | p_ptr->publ.ref, | |
467 | tipc_own_addr, | |
468 | CONN_MANAGER, | |
469 | CONN_PROBE, | |
c4307285 | 470 | TIPC_OK, |
b97bf3fd PL |
471 | port_out_seqno(p_ptr), |
472 | 0); | |
473 | port_incr_out_seqno(p_ptr); | |
474 | p_ptr->probing_state = PROBING; | |
475 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
476 | } | |
4323add6 PL |
477 | tipc_port_unlock(p_ptr); |
478 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
479 | } |
480 | ||
481 | ||
482 | static void port_handle_node_down(unsigned long ref) | |
483 | { | |
4323add6 | 484 | struct port *p_ptr = tipc_port_lock(ref); |
0e65967e | 485 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
486 | |
487 | if (!p_ptr) | |
488 | return; | |
489 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
490 | tipc_port_unlock(p_ptr); |
491 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
492 | } |
493 | ||
494 | ||
495 | static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err) | |
496 | { | |
497 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
498 | ||
499 | if (!p_ptr->publ.connected) | |
1fc54d8f | 500 | return NULL; |
b97bf3fd PL |
501 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
502 | imp++; | |
503 | return port_build_proto_msg(p_ptr->publ.ref, | |
504 | tipc_own_addr, | |
505 | port_peerport(p_ptr), | |
506 | port_peernode(p_ptr), | |
507 | imp, | |
508 | TIPC_CONN_MSG, | |
c4307285 | 509 | err, |
b97bf3fd PL |
510 | p_ptr->last_in_seqno + 1, |
511 | 0); | |
512 | } | |
513 | ||
514 | ||
515 | static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err) | |
516 | { | |
517 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
518 | ||
519 | if (!p_ptr->publ.connected) | |
1fc54d8f | 520 | return NULL; |
b97bf3fd PL |
521 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
522 | imp++; | |
523 | return port_build_proto_msg(port_peerport(p_ptr), | |
524 | port_peernode(p_ptr), | |
525 | p_ptr->publ.ref, | |
526 | tipc_own_addr, | |
527 | imp, | |
528 | TIPC_CONN_MSG, | |
c4307285 | 529 | err, |
b97bf3fd PL |
530 | port_out_seqno(p_ptr), |
531 | 0); | |
532 | } | |
533 | ||
4323add6 | 534 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
535 | { |
536 | struct tipc_msg *msg = buf_msg(buf); | |
4323add6 | 537 | struct port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 538 | u32 err = TIPC_OK; |
1fc54d8f SR |
539 | struct sk_buff *r_buf = NULL; |
540 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd | 541 | |
b97bf3fd PL |
542 | if (!p_ptr) { |
543 | err = TIPC_ERR_NO_PORT; | |
544 | } else if (p_ptr->publ.connected) { | |
96d841b7 AS |
545 | if ((port_peernode(p_ptr) != msg_orignode(msg)) || |
546 | (port_peerport(p_ptr) != msg_origport(msg))) { | |
b97bf3fd | 547 | err = TIPC_ERR_NO_PORT; |
96d841b7 | 548 | } else if (msg_type(msg) == CONN_ACK) { |
c4307285 | 549 | int wakeup = tipc_port_congested(p_ptr) && |
b97bf3fd PL |
550 | p_ptr->publ.congested && |
551 | p_ptr->wakeup; | |
552 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 553 | if (tipc_port_congested(p_ptr)) |
b97bf3fd PL |
554 | goto exit; |
555 | p_ptr->publ.congested = 0; | |
556 | if (!wakeup) | |
557 | goto exit; | |
558 | p_ptr->wakeup(&p_ptr->publ); | |
559 | goto exit; | |
560 | } | |
561 | } else if (p_ptr->publ.published) { | |
562 | err = TIPC_ERR_NO_PORT; | |
563 | } | |
564 | if (err) { | |
565 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
566 | msg_orignode(msg), |
567 | msg_destport(msg), | |
b97bf3fd | 568 | tipc_own_addr, |
06d82c91 | 569 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
570 | TIPC_CONN_MSG, |
571 | err, | |
572 | 0, | |
573 | 0); | |
574 | goto exit; | |
575 | } | |
576 | ||
577 | /* All is fine */ | |
578 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
579 | r_buf = port_build_proto_msg(msg_origport(msg), |
580 | msg_orignode(msg), | |
581 | msg_destport(msg), | |
582 | tipc_own_addr, | |
b97bf3fd PL |
583 | CONN_MANAGER, |
584 | CONN_PROBE_REPLY, | |
585 | TIPC_OK, | |
586 | port_out_seqno(p_ptr), | |
587 | 0); | |
588 | } | |
589 | p_ptr->probing_state = CONFIRMED; | |
590 | port_incr_out_seqno(p_ptr); | |
591 | exit: | |
592 | if (p_ptr) | |
4323add6 PL |
593 | tipc_port_unlock(p_ptr); |
594 | tipc_net_route_msg(r_buf); | |
595 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
596 | buf_discard(buf); |
597 | } | |
598 | ||
599 | static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id) | |
600 | { | |
c4307285 | 601 | struct publication *publ; |
b97bf3fd PL |
602 | |
603 | if (full_id) | |
c4307285 | 604 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 605 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
c4307285 | 606 | tipc_node(tipc_own_addr), p_ptr->publ.ref); |
b97bf3fd PL |
607 | else |
608 | tipc_printf(buf, "%-10u:", p_ptr->publ.ref); | |
609 | ||
c4307285 YH |
610 | if (p_ptr->publ.connected) { |
611 | u32 dport = port_peerport(p_ptr); | |
612 | u32 destnode = port_peernode(p_ptr); | |
613 | ||
614 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
615 | tipc_zone(destnode), tipc_cluster(destnode), | |
616 | tipc_node(destnode), dport); | |
617 | if (p_ptr->publ.conn_type != 0) | |
618 | tipc_printf(buf, " via {%u,%u}", | |
619 | p_ptr->publ.conn_type, | |
620 | p_ptr->publ.conn_instance); | |
0e65967e | 621 | } else if (p_ptr->publ.published) { |
c4307285 YH |
622 | tipc_printf(buf, " bound to"); |
623 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
624 | if (publ->lower == publ->upper) |
625 | tipc_printf(buf, " {%u,%u}", publ->type, | |
626 | publ->lower); | |
627 | else | |
c4307285 | 628 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 629 | publ->lower, publ->upper); |
c4307285 YH |
630 | } |
631 | } | |
632 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
633 | } |
634 | ||
635 | #define MAX_PORT_QUERY 32768 | |
636 | ||
4323add6 | 637 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
638 | { |
639 | struct sk_buff *buf; | |
640 | struct tlv_desc *rep_tlv; | |
641 | struct print_buf pb; | |
642 | struct port *p_ptr; | |
643 | int str_len; | |
644 | ||
4323add6 | 645 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
646 | if (!buf) |
647 | return NULL; | |
648 | rep_tlv = (struct tlv_desc *)buf->data; | |
649 | ||
4323add6 PL |
650 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
651 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd PL |
652 | list_for_each_entry(p_ptr, &ports, port_list) { |
653 | spin_lock_bh(p_ptr->publ.lock); | |
654 | port_print(p_ptr, &pb, 0); | |
655 | spin_unlock_bh(p_ptr->publ.lock); | |
656 | } | |
4323add6 PL |
657 | spin_unlock_bh(&tipc_port_list_lock); |
658 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
659 | |
660 | skb_put(buf, TLV_SPACE(str_len)); | |
661 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
662 | ||
663 | return buf; | |
664 | } | |
665 | ||
4323add6 | 666 | void tipc_port_reinit(void) |
b97bf3fd PL |
667 | { |
668 | struct port *p_ptr; | |
669 | struct tipc_msg *msg; | |
670 | ||
4323add6 | 671 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
672 | list_for_each_entry(p_ptr, &ports, port_list) { |
673 | msg = &p_ptr->publ.phdr; | |
674 | if (msg_orignode(msg) == tipc_own_addr) | |
675 | break; | |
6d4a6672 | 676 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
677 | msg_set_orignode(msg, tipc_own_addr); |
678 | } | |
4323add6 | 679 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
680 | } |
681 | ||
682 | ||
683 | /* | |
684 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
685 | * to the tipc_port interface. | |
686 | */ | |
687 | ||
688 | static void port_dispatcher_sigh(void *dummy) | |
689 | { | |
690 | struct sk_buff *buf; | |
691 | ||
692 | spin_lock_bh(&queue_lock); | |
693 | buf = msg_queue_head; | |
1fc54d8f | 694 | msg_queue_head = NULL; |
b97bf3fd PL |
695 | spin_unlock_bh(&queue_lock); |
696 | ||
697 | while (buf) { | |
698 | struct port *p_ptr; | |
699 | struct user_port *up_ptr; | |
700 | struct tipc_portid orig; | |
701 | struct tipc_name_seq dseq; | |
702 | void *usr_handle; | |
703 | int connected; | |
704 | int published; | |
9688243b | 705 | u32 message_type; |
b97bf3fd PL |
706 | |
707 | struct sk_buff *next = buf->next; | |
708 | struct tipc_msg *msg = buf_msg(buf); | |
709 | u32 dref = msg_destport(msg); | |
c4307285 | 710 | |
9688243b AS |
711 | message_type = msg_type(msg); |
712 | if (message_type > TIPC_DIRECT_MSG) | |
713 | goto reject; /* Unsupported message type */ | |
714 | ||
4323add6 | 715 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
716 | if (!p_ptr) |
717 | goto reject; /* Port deleted while msg in queue */ | |
718 | ||
b97bf3fd PL |
719 | orig.ref = msg_origport(msg); |
720 | orig.node = msg_orignode(msg); | |
721 | up_ptr = p_ptr->user_port; | |
722 | usr_handle = up_ptr->usr_handle; | |
723 | connected = p_ptr->publ.connected; | |
724 | published = p_ptr->publ.published; | |
725 | ||
726 | if (unlikely(msg_errcode(msg))) | |
727 | goto err; | |
728 | ||
9688243b | 729 | switch (message_type) { |
c4307285 | 730 | |
b97bf3fd PL |
731 | case TIPC_CONN_MSG:{ |
732 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
733 | u32 peer_port = port_peerport(p_ptr); | |
734 | u32 peer_node = port_peernode(p_ptr); | |
735 | ||
4cec72c8 | 736 | tipc_port_unlock(p_ptr); |
5307e469 AS |
737 | if (unlikely(!cb)) |
738 | goto reject; | |
b97bf3fd | 739 | if (unlikely(!connected)) { |
84b07c16 | 740 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 741 | goto reject; |
84b07c16 AS |
742 | } else if ((msg_origport(msg) != peer_port) || |
743 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 744 | goto reject; |
c4307285 | 745 | if (unlikely(++p_ptr->publ.conn_unacked >= |
b97bf3fd | 746 | TIPC_FLOW_CONTROL_WIN)) |
c4307285 | 747 | tipc_acknowledge(dref, |
b97bf3fd PL |
748 | p_ptr->publ.conn_unacked); |
749 | skb_pull(buf, msg_hdr_sz(msg)); | |
750 | cb(usr_handle, dref, &buf, msg_data(msg), | |
751 | msg_data_sz(msg)); | |
752 | break; | |
753 | } | |
754 | case TIPC_DIRECT_MSG:{ | |
755 | tipc_msg_event cb = up_ptr->msg_cb; | |
756 | ||
4cec72c8 | 757 | tipc_port_unlock(p_ptr); |
5307e469 | 758 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
759 | goto reject; |
760 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 761 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
762 | msg_data_sz(msg), msg_importance(msg), |
763 | &orig); | |
764 | break; | |
765 | } | |
9688243b | 766 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
767 | case TIPC_NAMED_MSG:{ |
768 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
769 | ||
4cec72c8 | 770 | tipc_port_unlock(p_ptr); |
5307e469 | 771 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
772 | goto reject; |
773 | dseq.type = msg_nametype(msg); | |
774 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
775 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
776 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 777 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 778 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
779 | msg_data_sz(msg), msg_importance(msg), |
780 | &orig, &dseq); | |
781 | break; | |
782 | } | |
783 | } | |
784 | if (buf) | |
785 | buf_discard(buf); | |
786 | buf = next; | |
787 | continue; | |
788 | err: | |
9688243b | 789 | switch (message_type) { |
c4307285 | 790 | |
b97bf3fd | 791 | case TIPC_CONN_MSG:{ |
c4307285 | 792 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
793 | up_ptr->conn_err_cb; |
794 | u32 peer_port = port_peerport(p_ptr); | |
795 | u32 peer_node = port_peernode(p_ptr); | |
796 | ||
4cec72c8 | 797 | tipc_port_unlock(p_ptr); |
5307e469 | 798 | if (!cb || !connected) |
b97bf3fd | 799 | break; |
5307e469 AS |
800 | if ((msg_origport(msg) != peer_port) || |
801 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
802 | break; |
803 | tipc_disconnect(dref); | |
804 | skb_pull(buf, msg_hdr_sz(msg)); | |
805 | cb(usr_handle, dref, &buf, msg_data(msg), | |
806 | msg_data_sz(msg), msg_errcode(msg)); | |
807 | break; | |
808 | } | |
809 | case TIPC_DIRECT_MSG:{ | |
810 | tipc_msg_err_event cb = up_ptr->err_cb; | |
811 | ||
4cec72c8 | 812 | tipc_port_unlock(p_ptr); |
5307e469 | 813 | if (!cb || connected) |
b97bf3fd PL |
814 | break; |
815 | skb_pull(buf, msg_hdr_sz(msg)); | |
816 | cb(usr_handle, dref, &buf, msg_data(msg), | |
817 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
818 | break; | |
819 | } | |
9688243b | 820 | case TIPC_MCAST_MSG: |
b97bf3fd | 821 | case TIPC_NAMED_MSG:{ |
c4307285 | 822 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
823 | up_ptr->named_err_cb; |
824 | ||
4cec72c8 | 825 | tipc_port_unlock(p_ptr); |
5307e469 | 826 | if (!cb || connected) |
b97bf3fd PL |
827 | break; |
828 | dseq.type = msg_nametype(msg); | |
829 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
830 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
831 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 832 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 833 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
834 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
835 | break; | |
836 | } | |
837 | } | |
838 | if (buf) | |
839 | buf_discard(buf); | |
840 | buf = next; | |
841 | continue; | |
842 | reject: | |
843 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
844 | buf = next; | |
845 | } | |
846 | } | |
847 | ||
848 | /* | |
849 | * port_dispatcher(): Dispatcher for messages destinated | |
850 | * to the tipc_port interface. Called with port locked. | |
851 | */ | |
852 | ||
853 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
854 | { | |
855 | buf->next = NULL; | |
856 | spin_lock_bh(&queue_lock); | |
857 | if (msg_queue_head) { | |
858 | msg_queue_tail->next = buf; | |
859 | msg_queue_tail = buf; | |
860 | } else { | |
861 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 862 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
863 | } |
864 | spin_unlock_bh(&queue_lock); | |
0e35fd5e | 865 | return 0; |
b97bf3fd PL |
866 | } |
867 | ||
c4307285 | 868 | /* |
b97bf3fd | 869 | * Wake up port after congestion: Called with port locked, |
c4307285 | 870 | * |
b97bf3fd PL |
871 | */ |
872 | ||
873 | static void port_wakeup_sh(unsigned long ref) | |
874 | { | |
875 | struct port *p_ptr; | |
876 | struct user_port *up_ptr; | |
1fc54d8f SR |
877 | tipc_continue_event cb = NULL; |
878 | void *uh = NULL; | |
b97bf3fd | 879 | |
4323add6 | 880 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
881 | if (p_ptr) { |
882 | up_ptr = p_ptr->user_port; | |
883 | if (up_ptr) { | |
884 | cb = up_ptr->continue_event_cb; | |
885 | uh = up_ptr->usr_handle; | |
886 | } | |
4323add6 | 887 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
888 | } |
889 | if (cb) | |
890 | cb(uh, ref); | |
891 | } | |
892 | ||
893 | ||
894 | static void port_wakeup(struct tipc_port *p_ptr) | |
895 | { | |
4323add6 | 896 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
897 | } |
898 | ||
899 | void tipc_acknowledge(u32 ref, u32 ack) | |
900 | { | |
901 | struct port *p_ptr; | |
1fc54d8f | 902 | struct sk_buff *buf = NULL; |
b97bf3fd | 903 | |
4323add6 | 904 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
905 | if (!p_ptr) |
906 | return; | |
907 | if (p_ptr->publ.connected) { | |
908 | p_ptr->publ.conn_unacked -= ack; | |
909 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
910 | port_peernode(p_ptr), | |
911 | ref, | |
912 | tipc_own_addr, | |
913 | CONN_MANAGER, | |
914 | CONN_ACK, | |
c4307285 | 915 | TIPC_OK, |
b97bf3fd PL |
916 | port_out_seqno(p_ptr), |
917 | ack); | |
918 | } | |
4323add6 PL |
919 | tipc_port_unlock(p_ptr); |
920 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
921 | } |
922 | ||
923 | /* | |
b0c1e928 | 924 | * tipc_createport(): user level call. |
b97bf3fd PL |
925 | */ |
926 | ||
b0c1e928 | 927 | int tipc_createport(void *usr_handle, |
c4307285 YH |
928 | unsigned int importance, |
929 | tipc_msg_err_event error_cb, | |
930 | tipc_named_msg_err_event named_error_cb, | |
931 | tipc_conn_shutdown_event conn_error_cb, | |
932 | tipc_msg_event msg_cb, | |
933 | tipc_named_msg_event named_msg_cb, | |
934 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
935 | tipc_continue_event continue_event_cb,/* May be zero */ |
936 | u32 *portref) | |
937 | { | |
938 | struct user_port *up_ptr; | |
c4307285 | 939 | struct port *p_ptr; |
b97bf3fd | 940 | |
0da974f4 | 941 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 942 | if (!up_ptr) { |
a75bf874 | 943 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
944 | return -ENOMEM; |
945 | } | |
0ea52241 AS |
946 | p_ptr = (struct port *)tipc_createport_raw(NULL, port_dispatcher, |
947 | port_wakeup, importance); | |
948 | if (!p_ptr) { | |
b97bf3fd PL |
949 | kfree(up_ptr); |
950 | return -ENOMEM; | |
951 | } | |
952 | ||
953 | p_ptr->user_port = up_ptr; | |
b97bf3fd PL |
954 | up_ptr->usr_handle = usr_handle; |
955 | up_ptr->ref = p_ptr->publ.ref; | |
956 | up_ptr->err_cb = error_cb; | |
957 | up_ptr->named_err_cb = named_error_cb; | |
958 | up_ptr->conn_err_cb = conn_error_cb; | |
959 | up_ptr->msg_cb = msg_cb; | |
960 | up_ptr->named_msg_cb = named_msg_cb; | |
961 | up_ptr->conn_msg_cb = conn_msg_cb; | |
962 | up_ptr->continue_event_cb = continue_event_cb; | |
b97bf3fd | 963 | *portref = p_ptr->publ.ref; |
4323add6 | 964 | tipc_port_unlock(p_ptr); |
0e35fd5e | 965 | return 0; |
b97bf3fd PL |
966 | } |
967 | ||
b97bf3fd PL |
968 | int tipc_portimportance(u32 ref, unsigned int *importance) |
969 | { | |
970 | struct port *p_ptr; | |
c4307285 | 971 | |
4323add6 | 972 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
973 | if (!p_ptr) |
974 | return -EINVAL; | |
975 | *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr); | |
4cec72c8 | 976 | tipc_port_unlock(p_ptr); |
0e35fd5e | 977 | return 0; |
b97bf3fd PL |
978 | } |
979 | ||
980 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
981 | { | |
982 | struct port *p_ptr; | |
983 | ||
984 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
985 | return -EINVAL; | |
986 | ||
4323add6 | 987 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
988 | if (!p_ptr) |
989 | return -EINVAL; | |
990 | msg_set_importance(&p_ptr->publ.phdr, (u32)imp); | |
4cec72c8 | 991 | tipc_port_unlock(p_ptr); |
0e35fd5e | 992 | return 0; |
b97bf3fd PL |
993 | } |
994 | ||
995 | ||
996 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
997 | { | |
998 | struct port *p_ptr; | |
999 | struct publication *publ; | |
1000 | u32 key; | |
1001 | int res = -EINVAL; | |
1002 | ||
4323add6 | 1003 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
1004 | if (!p_ptr) |
1005 | return -EINVAL; | |
1006 | ||
b97bf3fd PL |
1007 | if (p_ptr->publ.connected) |
1008 | goto exit; | |
1009 | if (seq->lower > seq->upper) | |
1010 | goto exit; | |
1011 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
1012 | goto exit; | |
1013 | key = ref + p_ptr->pub_count + 1; | |
1014 | if (key == ref) { | |
1015 | res = -EADDRINUSE; | |
1016 | goto exit; | |
1017 | } | |
4323add6 PL |
1018 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
1019 | scope, p_ptr->publ.ref, key); | |
b97bf3fd PL |
1020 | if (publ) { |
1021 | list_add(&publ->pport_list, &p_ptr->publications); | |
1022 | p_ptr->pub_count++; | |
1023 | p_ptr->publ.published = 1; | |
0e35fd5e | 1024 | res = 0; |
b97bf3fd PL |
1025 | } |
1026 | exit: | |
4323add6 | 1027 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1028 | return res; |
1029 | } | |
1030 | ||
1031 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1032 | { | |
1033 | struct port *p_ptr; | |
1034 | struct publication *publ; | |
1035 | struct publication *tpubl; | |
1036 | int res = -EINVAL; | |
c4307285 | 1037 | |
4323add6 | 1038 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1039 | if (!p_ptr) |
1040 | return -EINVAL; | |
b97bf3fd | 1041 | if (!seq) { |
c4307285 | 1042 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1043 | &p_ptr->publications, pport_list) { |
c4307285 | 1044 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1045 | publ->ref, publ->key); |
b97bf3fd | 1046 | } |
0e35fd5e | 1047 | res = 0; |
b97bf3fd | 1048 | } else { |
c4307285 | 1049 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1050 | &p_ptr->publications, pport_list) { |
1051 | if (publ->scope != scope) | |
1052 | continue; | |
1053 | if (publ->type != seq->type) | |
1054 | continue; | |
1055 | if (publ->lower != seq->lower) | |
1056 | continue; | |
1057 | if (publ->upper != seq->upper) | |
1058 | break; | |
c4307285 | 1059 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1060 | publ->ref, publ->key); |
0e35fd5e | 1061 | res = 0; |
b97bf3fd PL |
1062 | break; |
1063 | } | |
1064 | } | |
1065 | if (list_empty(&p_ptr->publications)) | |
1066 | p_ptr->publ.published = 0; | |
4323add6 | 1067 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1068 | return res; |
1069 | } | |
1070 | ||
1071 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1072 | { | |
1073 | struct port *p_ptr; | |
1074 | struct tipc_msg *msg; | |
1075 | int res = -EINVAL; | |
1076 | ||
4323add6 | 1077 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1078 | if (!p_ptr) |
1079 | return -EINVAL; | |
1080 | if (p_ptr->publ.published || p_ptr->publ.connected) | |
1081 | goto exit; | |
1082 | if (!peer->ref) | |
1083 | goto exit; | |
1084 | ||
1085 | msg = &p_ptr->publ.phdr; | |
1086 | msg_set_destnode(msg, peer->node); | |
1087 | msg_set_destport(msg, peer->ref); | |
1088 | msg_set_orignode(msg, tipc_own_addr); | |
1089 | msg_set_origport(msg, p_ptr->publ.ref); | |
1090 | msg_set_transp_seqno(msg, 42); | |
1091 | msg_set_type(msg, TIPC_CONN_MSG); | |
08c80e9a | 1092 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
1093 | |
1094 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1095 | p_ptr->probing_state = CONFIRMED; | |
1096 | p_ptr->publ.connected = 1; | |
1097 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
1098 | ||
0e65967e | 1099 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 1100 | (void *)(unsigned long)ref, |
b97bf3fd | 1101 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 1102 | res = 0; |
b97bf3fd | 1103 | exit: |
4323add6 | 1104 | tipc_port_unlock(p_ptr); |
05646c91 | 1105 | p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1106 | return res; |
1107 | } | |
1108 | ||
0c3141e9 AS |
1109 | /** |
1110 | * tipc_disconnect_port - disconnect port from peer | |
1111 | * | |
1112 | * Port must be locked. | |
1113 | */ | |
1114 | ||
1115 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1116 | { | |
1117 | int res; | |
1118 | ||
1119 | if (tp_ptr->connected) { | |
1120 | tp_ptr->connected = 0; | |
1121 | /* let timer expire on it's own to avoid deadlock! */ | |
1122 | tipc_nodesub_unsubscribe( | |
1123 | &((struct port *)tp_ptr)->subscription); | |
0e35fd5e | 1124 | res = 0; |
0c3141e9 AS |
1125 | } else { |
1126 | res = -ENOTCONN; | |
1127 | } | |
1128 | return res; | |
1129 | } | |
1130 | ||
b97bf3fd PL |
1131 | /* |
1132 | * tipc_disconnect(): Disconnect port form peer. | |
1133 | * This is a node local operation. | |
1134 | */ | |
1135 | ||
1136 | int tipc_disconnect(u32 ref) | |
1137 | { | |
1138 | struct port *p_ptr; | |
0c3141e9 | 1139 | int res; |
b97bf3fd | 1140 | |
4323add6 | 1141 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1142 | if (!p_ptr) |
1143 | return -EINVAL; | |
0c3141e9 | 1144 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1145 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1146 | return res; |
1147 | } | |
1148 | ||
1149 | /* | |
1150 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1151 | */ | |
1152 | int tipc_shutdown(u32 ref) | |
1153 | { | |
1154 | struct port *p_ptr; | |
1fc54d8f | 1155 | struct sk_buff *buf = NULL; |
b97bf3fd | 1156 | |
4323add6 | 1157 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1158 | if (!p_ptr) |
1159 | return -EINVAL; | |
1160 | ||
1161 | if (p_ptr->publ.connected) { | |
1162 | u32 imp = msg_importance(&p_ptr->publ.phdr); | |
1163 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
1164 | imp++; | |
1165 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1166 | port_peernode(p_ptr), | |
1167 | ref, | |
1168 | tipc_own_addr, | |
1169 | imp, | |
1170 | TIPC_CONN_MSG, | |
c4307285 | 1171 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1172 | port_out_seqno(p_ptr), |
1173 | 0); | |
1174 | } | |
4323add6 PL |
1175 | tipc_port_unlock(p_ptr); |
1176 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1177 | return tipc_disconnect(ref); |
1178 | } | |
1179 | ||
b97bf3fd | 1180 | /* |
4323add6 | 1181 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1182 | * message for this node. |
1183 | */ | |
1184 | ||
31e3c3f6 | 1185 | static int tipc_port_recv_sections(struct port *sender, unsigned int num_sect, |
1186 | struct iovec const *msg_sect) | |
b97bf3fd PL |
1187 | { |
1188 | struct sk_buff *buf; | |
1189 | int res; | |
c4307285 | 1190 | |
c68ca7b7 | 1191 | res = tipc_msg_build(&sender->publ.phdr, msg_sect, num_sect, |
b97bf3fd PL |
1192 | MAX_MSG_SIZE, !sender->user_port, &buf); |
1193 | if (likely(buf)) | |
4323add6 | 1194 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1195 | return res; |
1196 | } | |
1197 | ||
1198 | /** | |
1199 | * tipc_send - send message sections on connection | |
1200 | */ | |
1201 | ||
1202 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1203 | { | |
1204 | struct port *p_ptr; | |
1205 | u32 destnode; | |
1206 | int res; | |
1207 | ||
4323add6 | 1208 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1209 | if (!p_ptr || !p_ptr->publ.connected) |
1210 | return -EINVAL; | |
1211 | ||
1212 | p_ptr->publ.congested = 1; | |
4323add6 | 1213 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1214 | destnode = port_peernode(p_ptr); |
1215 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1216 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1217 | destnode); | |
b97bf3fd | 1218 | else |
4323add6 | 1219 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1220 | |
1221 | if (likely(res != -ELINKCONG)) { | |
1222 | port_incr_out_seqno(p_ptr); | |
1223 | p_ptr->publ.congested = 0; | |
1224 | p_ptr->sent++; | |
1225 | return res; | |
1226 | } | |
1227 | } | |
1228 | if (port_unreliable(p_ptr)) { | |
1229 | p_ptr->publ.congested = 0; | |
1230 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1231 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1232 | } |
1233 | return -ELINKCONG; | |
1234 | } | |
1235 | ||
b97bf3fd | 1236 | /** |
12bae479 | 1237 | * tipc_send2name - send message sections to port name |
b97bf3fd PL |
1238 | */ |
1239 | ||
12bae479 AS |
1240 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
1241 | unsigned int num_sect, struct iovec const *msg_sect) | |
b97bf3fd PL |
1242 | { |
1243 | struct port *p_ptr; | |
1244 | struct tipc_msg *msg; | |
1245 | u32 destnode = domain; | |
9ccc2eb4 | 1246 | u32 destport; |
b97bf3fd PL |
1247 | int res; |
1248 | ||
4323add6 | 1249 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1250 | if (!p_ptr || p_ptr->publ.connected) |
1251 | return -EINVAL; | |
1252 | ||
1253 | msg = &p_ptr->publ.phdr; | |
1254 | msg_set_type(msg, TIPC_NAMED_MSG); | |
12bae479 AS |
1255 | msg_set_orignode(msg, tipc_own_addr); |
1256 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1257 | msg_set_hdr_sz(msg, LONG_H_SIZE); |
1258 | msg_set_nametype(msg, name->type); | |
1259 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 1260 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 1261 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1262 | msg_set_destnode(msg, destnode); |
1263 | msg_set_destport(msg, destport); | |
1264 | ||
5d9c54c1 | 1265 | if (likely(destport)) { |
b97bf3fd PL |
1266 | p_ptr->sent++; |
1267 | if (likely(destnode == tipc_own_addr)) | |
4323add6 | 1268 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
c4307285 | 1269 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
4323add6 | 1270 | destnode); |
b97bf3fd PL |
1271 | if (likely(res != -ELINKCONG)) |
1272 | return res; | |
1273 | if (port_unreliable(p_ptr)) { | |
1274 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1275 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1276 | } |
1277 | return -ELINKCONG; | |
1278 | } | |
c4307285 | 1279 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1280 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1281 | } |
1282 | ||
1283 | /** | |
12bae479 | 1284 | * tipc_send2port - send message sections to port identity |
b97bf3fd PL |
1285 | */ |
1286 | ||
12bae479 AS |
1287 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
1288 | unsigned int num_sect, struct iovec const *msg_sect) | |
b97bf3fd PL |
1289 | { |
1290 | struct port *p_ptr; | |
1291 | struct tipc_msg *msg; | |
1292 | int res; | |
1293 | ||
4323add6 | 1294 | p_ptr = tipc_port_deref(ref); |
b97bf3fd PL |
1295 | if (!p_ptr || p_ptr->publ.connected) |
1296 | return -EINVAL; | |
1297 | ||
1298 | msg = &p_ptr->publ.phdr; | |
1299 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
12bae479 AS |
1300 | msg_set_orignode(msg, tipc_own_addr); |
1301 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1302 | msg_set_destnode(msg, dest->node); |
1303 | msg_set_destport(msg, dest->ref); | |
1304 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
b97bf3fd PL |
1305 | p_ptr->sent++; |
1306 | if (dest->node == tipc_own_addr) | |
4323add6 PL |
1307 | return tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1308 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node); | |
b97bf3fd PL |
1309 | if (likely(res != -ELINKCONG)) |
1310 | return res; | |
1311 | if (port_unreliable(p_ptr)) { | |
1312 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1313 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1314 | } |
1315 | return -ELINKCONG; | |
1316 | } | |
1317 | ||
c4307285 | 1318 | /** |
12bae479 | 1319 | * tipc_send_buf2port - send message buffer to port identity |
b97bf3fd PL |
1320 | */ |
1321 | ||
12bae479 AS |
1322 | int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest, |
1323 | struct sk_buff *buf, unsigned int dsz) | |
b97bf3fd PL |
1324 | { |
1325 | struct port *p_ptr; | |
1326 | struct tipc_msg *msg; | |
1327 | int res; | |
1328 | ||
4323add6 | 1329 | p_ptr = (struct port *)tipc_ref_deref(ref); |
b97bf3fd PL |
1330 | if (!p_ptr || p_ptr->publ.connected) |
1331 | return -EINVAL; | |
1332 | ||
1333 | msg = &p_ptr->publ.phdr; | |
1334 | msg_set_type(msg, TIPC_DIRECT_MSG); | |
12bae479 AS |
1335 | msg_set_orignode(msg, tipc_own_addr); |
1336 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1337 | msg_set_destnode(msg, dest->node); |
1338 | msg_set_destport(msg, dest->ref); | |
1339 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
b97bf3fd PL |
1340 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); |
1341 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1342 | return -ENOMEM; | |
1343 | ||
1344 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1345 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
b97bf3fd PL |
1346 | p_ptr->sent++; |
1347 | if (dest->node == tipc_own_addr) | |
4323add6 | 1348 | return tipc_port_recv_msg(buf); |
b97bf3fd PL |
1349 | res = tipc_send_buf_fast(buf, dest->node); |
1350 | if (likely(res != -ELINKCONG)) | |
1351 | return res; | |
1352 | if (port_unreliable(p_ptr)) | |
1353 | return dsz; | |
1354 | return -ELINKCONG; | |
1355 | } | |
1356 |