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 |
23dd4cce | 5 | * Copyright (c) 2004-2008, 2010-2011, 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); |
23dd4cce AS |
57 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *, u32 err); |
58 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *, u32 err); | |
b97bf3fd PL |
59 | static void port_timeout(unsigned long ref); |
60 | ||
61 | ||
23dd4cce | 62 | static u32 port_peernode(struct tipc_port *p_ptr) |
b97bf3fd | 63 | { |
23dd4cce | 64 | return msg_destnode(&p_ptr->phdr); |
b97bf3fd PL |
65 | } |
66 | ||
23dd4cce | 67 | static u32 port_peerport(struct tipc_port *p_ptr) |
b97bf3fd | 68 | { |
23dd4cce | 69 | return msg_destport(&p_ptr->phdr); |
b97bf3fd PL |
70 | } |
71 | ||
b97bf3fd PL |
72 | /** |
73 | * tipc_multicast - send a multicast message to local and remote destinations | |
74 | */ | |
75 | ||
38f232ea | 76 | int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, |
b97bf3fd PL |
77 | u32 num_sect, struct iovec const *msg_sect) |
78 | { | |
79 | struct tipc_msg *hdr; | |
80 | struct sk_buff *buf; | |
81 | struct sk_buff *ibuf = NULL; | |
82 | struct port_list dports = {0, NULL, }; | |
23dd4cce | 83 | struct tipc_port *oport = tipc_port_deref(ref); |
b97bf3fd PL |
84 | int ext_targets; |
85 | int res; | |
86 | ||
87 | if (unlikely(!oport)) | |
88 | return -EINVAL; | |
89 | ||
90 | /* Create multicast message */ | |
91 | ||
23dd4cce | 92 | hdr = &oport->phdr; |
b97bf3fd | 93 | msg_set_type(hdr, TIPC_MCAST_MSG); |
53b94364 | 94 | msg_set_lookup_scope(hdr, TIPC_CLUSTER_SCOPE); |
b97bf3fd PL |
95 | msg_set_nametype(hdr, seq->type); |
96 | msg_set_namelower(hdr, seq->lower); | |
97 | msg_set_nameupper(hdr, seq->upper); | |
98 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | |
c68ca7b7 | 99 | res = tipc_msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
100 | !oport->user_port, &buf); |
101 | if (unlikely(!buf)) | |
102 | return res; | |
103 | ||
104 | /* Figure out where to send multicast message */ | |
105 | ||
4323add6 PL |
106 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
107 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
108 | |
109 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
110 | |
111 | if (ext_targets) { | |
112 | if (dports.count != 0) { | |
113 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
114 | if (ibuf == NULL) { | |
4323add6 | 115 | tipc_port_list_free(&dports); |
b97bf3fd PL |
116 | buf_discard(buf); |
117 | return -ENOMEM; | |
118 | } | |
119 | } | |
4323add6 | 120 | res = tipc_bclink_send_msg(buf); |
a016892c | 121 | if ((res < 0) && (dports.count != 0)) |
b97bf3fd | 122 | buf_discard(ibuf); |
b97bf3fd PL |
123 | } else { |
124 | ibuf = buf; | |
125 | } | |
126 | ||
127 | if (res >= 0) { | |
128 | if (ibuf) | |
4323add6 | 129 | tipc_port_recv_mcast(ibuf, &dports); |
b97bf3fd | 130 | } else { |
4323add6 | 131 | tipc_port_list_free(&dports); |
b97bf3fd PL |
132 | } |
133 | return res; | |
134 | } | |
135 | ||
136 | /** | |
4323add6 | 137 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
c4307285 | 138 | * |
b97bf3fd PL |
139 | * If there is no port list, perform a lookup to create one |
140 | */ | |
141 | ||
4323add6 | 142 | void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp) |
b97bf3fd | 143 | { |
0e65967e | 144 | struct tipc_msg *msg; |
b97bf3fd PL |
145 | struct port_list dports = {0, NULL, }; |
146 | struct port_list *item = dp; | |
147 | int cnt = 0; | |
148 | ||
b97bf3fd PL |
149 | msg = buf_msg(buf); |
150 | ||
151 | /* Create destination port list, if one wasn't supplied */ | |
152 | ||
153 | if (dp == NULL) { | |
4323add6 | 154 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
155 | msg_namelower(msg), |
156 | msg_nameupper(msg), | |
157 | TIPC_CLUSTER_SCOPE, | |
158 | &dports); | |
159 | item = dp = &dports; | |
160 | } | |
161 | ||
162 | /* Deliver a copy of message to each destination port */ | |
163 | ||
164 | if (dp->count != 0) { | |
165 | if (dp->count == 1) { | |
166 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
167 | tipc_port_recv_msg(buf); |
168 | tipc_port_list_free(dp); | |
b97bf3fd PL |
169 | return; |
170 | } | |
171 | for (; cnt < dp->count; cnt++) { | |
172 | int index = cnt % PLSIZE; | |
173 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
174 | ||
175 | if (b == NULL) { | |
a10bd924 | 176 | warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
177 | goto exit; |
178 | } | |
a016892c | 179 | if ((index == 0) && (cnt != 0)) |
b97bf3fd | 180 | item = item->next; |
0e65967e | 181 | msg_set_destport(buf_msg(b), item->ports[index]); |
4323add6 | 182 | tipc_port_recv_msg(b); |
b97bf3fd PL |
183 | } |
184 | } | |
185 | exit: | |
186 | buf_discard(buf); | |
4323add6 | 187 | tipc_port_list_free(dp); |
b97bf3fd PL |
188 | } |
189 | ||
190 | /** | |
7ef43eba | 191 | * tipc_createport_raw - create a generic TIPC port |
c4307285 | 192 | * |
0ea52241 | 193 | * Returns pointer to (locked) TIPC port, or NULL if unable to create it |
b97bf3fd PL |
194 | */ |
195 | ||
0ea52241 | 196 | struct tipc_port *tipc_createport_raw(void *usr_handle, |
b97bf3fd PL |
197 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), |
198 | void (*wakeup)(struct tipc_port *), | |
0ea52241 | 199 | const u32 importance) |
b97bf3fd | 200 | { |
23dd4cce | 201 | struct tipc_port *p_ptr; |
b97bf3fd PL |
202 | struct tipc_msg *msg; |
203 | u32 ref; | |
204 | ||
0da974f4 | 205 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 AS |
206 | if (!p_ptr) { |
207 | warn("Port creation failed, no memory\n"); | |
0ea52241 | 208 | return NULL; |
b97bf3fd | 209 | } |
23dd4cce | 210 | ref = tipc_ref_acquire(p_ptr, &p_ptr->lock); |
b97bf3fd | 211 | if (!ref) { |
a10bd924 | 212 | warn("Port creation failed, reference table exhausted\n"); |
b97bf3fd | 213 | kfree(p_ptr); |
0ea52241 | 214 | return NULL; |
b97bf3fd PL |
215 | } |
216 | ||
23dd4cce AS |
217 | p_ptr->usr_handle = usr_handle; |
218 | p_ptr->max_pkt = MAX_PKT_DEFAULT; | |
219 | p_ptr->ref = ref; | |
220 | msg = &p_ptr->phdr; | |
c68ca7b7 | 221 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, LONG_H_SIZE, 0); |
b97bf3fd | 222 | msg_set_origport(msg, ref); |
b97bf3fd PL |
223 | INIT_LIST_HEAD(&p_ptr->wait_list); |
224 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd PL |
225 | p_ptr->dispatcher = dispatcher; |
226 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 227 | p_ptr->user_port = NULL; |
b97bf3fd | 228 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 229 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
230 | INIT_LIST_HEAD(&p_ptr->publications); |
231 | INIT_LIST_HEAD(&p_ptr->port_list); | |
232 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 | 233 | spin_unlock_bh(&tipc_port_list_lock); |
23dd4cce | 234 | return p_ptr; |
b97bf3fd PL |
235 | } |
236 | ||
237 | int tipc_deleteport(u32 ref) | |
238 | { | |
23dd4cce | 239 | struct tipc_port *p_ptr; |
1fc54d8f | 240 | struct sk_buff *buf = NULL; |
b97bf3fd | 241 | |
1fc54d8f | 242 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 243 | p_ptr = tipc_port_lock(ref); |
c4307285 | 244 | if (!p_ptr) |
b97bf3fd PL |
245 | return -EINVAL; |
246 | ||
4323add6 PL |
247 | tipc_ref_discard(ref); |
248 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
249 | |
250 | k_cancel_timer(&p_ptr->timer); | |
23dd4cce | 251 | if (p_ptr->connected) { |
b97bf3fd | 252 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
4323add6 | 253 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd | 254 | } |
e83504f7 | 255 | kfree(p_ptr->user_port); |
b97bf3fd | 256 | |
4323add6 | 257 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
258 | list_del(&p_ptr->port_list); |
259 | list_del(&p_ptr->wait_list); | |
4323add6 | 260 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
261 | k_term_timer(&p_ptr->timer); |
262 | kfree(p_ptr); | |
4323add6 | 263 | tipc_net_route_msg(buf); |
0e35fd5e | 264 | return 0; |
b97bf3fd PL |
265 | } |
266 | ||
23dd4cce | 267 | static int port_unreliable(struct tipc_port *p_ptr) |
b97bf3fd | 268 | { |
23dd4cce | 269 | return msg_src_droppable(&p_ptr->phdr); |
b97bf3fd PL |
270 | } |
271 | ||
272 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
273 | { | |
23dd4cce | 274 | struct tipc_port *p_ptr; |
c4307285 | 275 | |
4323add6 | 276 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
277 | if (!p_ptr) |
278 | return -EINVAL; | |
279 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 280 | tipc_port_unlock(p_ptr); |
0e35fd5e | 281 | return 0; |
b97bf3fd PL |
282 | } |
283 | ||
284 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
285 | { | |
23dd4cce | 286 | struct tipc_port *p_ptr; |
c4307285 | 287 | |
4323add6 | 288 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
289 | if (!p_ptr) |
290 | return -EINVAL; | |
23dd4cce | 291 | msg_set_src_droppable(&p_ptr->phdr, (isunreliable != 0)); |
4323add6 | 292 | tipc_port_unlock(p_ptr); |
0e35fd5e | 293 | return 0; |
b97bf3fd PL |
294 | } |
295 | ||
23dd4cce | 296 | static int port_unreturnable(struct tipc_port *p_ptr) |
b97bf3fd | 297 | { |
23dd4cce | 298 | return msg_dest_droppable(&p_ptr->phdr); |
b97bf3fd PL |
299 | } |
300 | ||
301 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
302 | { | |
23dd4cce | 303 | struct tipc_port *p_ptr; |
c4307285 | 304 | |
4323add6 | 305 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
306 | if (!p_ptr) |
307 | return -EINVAL; | |
308 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 309 | tipc_port_unlock(p_ptr); |
0e35fd5e | 310 | return 0; |
b97bf3fd PL |
311 | } |
312 | ||
313 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
314 | { | |
23dd4cce | 315 | struct tipc_port *p_ptr; |
c4307285 | 316 | |
4323add6 | 317 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
318 | if (!p_ptr) |
319 | return -EINVAL; | |
23dd4cce | 320 | msg_set_dest_droppable(&p_ptr->phdr, (isunrejectable != 0)); |
4323add6 | 321 | tipc_port_unlock(p_ptr); |
0e35fd5e | 322 | return 0; |
b97bf3fd PL |
323 | } |
324 | ||
c4307285 YH |
325 | /* |
326 | * port_build_proto_msg(): build a port level protocol | |
327 | * or a connection abortion message. Called with | |
b97bf3fd PL |
328 | * tipc_port lock on. |
329 | */ | |
330 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
331 | u32 origport, u32 orignode, | |
c4307285 | 332 | u32 usr, u32 type, u32 err, |
741de3e9 | 333 | u32 ack) |
b97bf3fd PL |
334 | { |
335 | struct sk_buff *buf; | |
336 | struct tipc_msg *msg; | |
c4307285 | 337 | |
31e3c3f6 | 338 | buf = tipc_buf_acquire(LONG_H_SIZE); |
b97bf3fd PL |
339 | if (buf) { |
340 | msg = buf_msg(buf); | |
c68ca7b7 | 341 | tipc_msg_init(msg, usr, type, LONG_H_SIZE, destnode); |
75715217 | 342 | msg_set_errcode(msg, err); |
b97bf3fd PL |
343 | msg_set_destport(msg, destport); |
344 | msg_set_origport(msg, origport); | |
b97bf3fd | 345 | msg_set_orignode(msg, orignode); |
b97bf3fd | 346 | msg_set_msgcnt(msg, ack); |
b97bf3fd PL |
347 | } |
348 | return buf; | |
349 | } | |
350 | ||
b97bf3fd PL |
351 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
352 | { | |
353 | struct tipc_msg *msg = buf_msg(buf); | |
354 | struct sk_buff *rbuf; | |
355 | struct tipc_msg *rmsg; | |
356 | int hdr_sz; | |
357 | u32 imp = msg_importance(msg); | |
358 | u32 data_sz = msg_data_sz(msg); | |
359 | ||
360 | if (data_sz > MAX_REJECT_SIZE) | |
361 | data_sz = MAX_REJECT_SIZE; | |
362 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
363 | imp++; | |
b97bf3fd PL |
364 | |
365 | /* discard rejected message if it shouldn't be returned to sender */ | |
366 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
367 | buf_discard(buf); | |
368 | return data_sz; | |
369 | } | |
370 | ||
371 | /* construct rejected message */ | |
372 | if (msg_mcast(msg)) | |
373 | hdr_sz = MCAST_H_SIZE; | |
374 | else | |
375 | hdr_sz = LONG_H_SIZE; | |
31e3c3f6 | 376 | rbuf = tipc_buf_acquire(data_sz + hdr_sz); |
b97bf3fd PL |
377 | if (rbuf == NULL) { |
378 | buf_discard(buf); | |
379 | return data_sz; | |
380 | } | |
381 | rmsg = buf_msg(rbuf); | |
c68ca7b7 | 382 | tipc_msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg)); |
75715217 | 383 | msg_set_errcode(rmsg, err); |
b97bf3fd | 384 | msg_set_destport(rmsg, msg_origport(msg)); |
b97bf3fd | 385 | msg_set_origport(rmsg, msg_destport(msg)); |
99c14593 | 386 | if (msg_short(msg)) { |
b97bf3fd | 387 | msg_set_orignode(rmsg, tipc_own_addr); |
99c14593 AS |
388 | /* leave name type & instance as zeroes */ |
389 | } else { | |
b97bf3fd | 390 | msg_set_orignode(rmsg, msg_destnode(msg)); |
99c14593 AS |
391 | msg_set_nametype(rmsg, msg_nametype(msg)); |
392 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
393 | } | |
c4307285 | 394 | msg_set_size(rmsg, data_sz + hdr_sz); |
27d7ff46 | 395 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
396 | |
397 | /* send self-abort message when rejecting on a connected port */ | |
398 | if (msg_connected(msg)) { | |
1fc54d8f | 399 | struct sk_buff *abuf = NULL; |
23dd4cce | 400 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
401 | |
402 | if (p_ptr) { | |
23dd4cce | 403 | if (p_ptr->connected) |
b97bf3fd | 404 | abuf = port_build_self_abort_msg(p_ptr, err); |
4323add6 | 405 | tipc_port_unlock(p_ptr); |
b97bf3fd | 406 | } |
4323add6 | 407 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
408 | } |
409 | ||
410 | /* send rejected message */ | |
411 | buf_discard(buf); | |
4323add6 | 412 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
413 | return data_sz; |
414 | } | |
415 | ||
23dd4cce | 416 | int tipc_port_reject_sections(struct tipc_port *p_ptr, struct tipc_msg *hdr, |
4323add6 PL |
417 | struct iovec const *msg_sect, u32 num_sect, |
418 | int err) | |
b97bf3fd PL |
419 | { |
420 | struct sk_buff *buf; | |
421 | int res; | |
422 | ||
c68ca7b7 | 423 | res = tipc_msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE, |
b97bf3fd PL |
424 | !p_ptr->user_port, &buf); |
425 | if (!buf) | |
426 | return res; | |
427 | ||
428 | return tipc_reject_msg(buf, err); | |
429 | } | |
430 | ||
431 | static void port_timeout(unsigned long ref) | |
432 | { | |
23dd4cce | 433 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 434 | struct sk_buff *buf = NULL; |
b97bf3fd | 435 | |
065fd177 AS |
436 | if (!p_ptr) |
437 | return; | |
438 | ||
23dd4cce | 439 | if (!p_ptr->connected) { |
065fd177 | 440 | tipc_port_unlock(p_ptr); |
b97bf3fd | 441 | return; |
065fd177 | 442 | } |
b97bf3fd PL |
443 | |
444 | /* Last probe answered ? */ | |
445 | if (p_ptr->probing_state == PROBING) { | |
446 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
447 | } else { | |
448 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
449 | port_peernode(p_ptr), | |
23dd4cce | 450 | p_ptr->ref, |
b97bf3fd PL |
451 | tipc_own_addr, |
452 | CONN_MANAGER, | |
453 | CONN_PROBE, | |
c4307285 | 454 | TIPC_OK, |
b97bf3fd | 455 | 0); |
b97bf3fd PL |
456 | p_ptr->probing_state = PROBING; |
457 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
458 | } | |
4323add6 PL |
459 | tipc_port_unlock(p_ptr); |
460 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
461 | } |
462 | ||
463 | ||
464 | static void port_handle_node_down(unsigned long ref) | |
465 | { | |
23dd4cce | 466 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
0e65967e | 467 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
468 | |
469 | if (!p_ptr) | |
470 | return; | |
471 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
472 | tipc_port_unlock(p_ptr); |
473 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
474 | } |
475 | ||
476 | ||
23dd4cce | 477 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 478 | { |
23dd4cce | 479 | u32 imp = msg_importance(&p_ptr->phdr); |
b97bf3fd | 480 | |
23dd4cce | 481 | if (!p_ptr->connected) |
1fc54d8f | 482 | return NULL; |
b97bf3fd PL |
483 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
484 | imp++; | |
23dd4cce | 485 | return port_build_proto_msg(p_ptr->ref, |
b97bf3fd PL |
486 | tipc_own_addr, |
487 | port_peerport(p_ptr), | |
488 | port_peernode(p_ptr), | |
489 | imp, | |
490 | TIPC_CONN_MSG, | |
c4307285 | 491 | err, |
b97bf3fd PL |
492 | 0); |
493 | } | |
494 | ||
495 | ||
23dd4cce | 496 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 497 | { |
23dd4cce | 498 | u32 imp = msg_importance(&p_ptr->phdr); |
b97bf3fd | 499 | |
23dd4cce | 500 | if (!p_ptr->connected) |
1fc54d8f | 501 | return NULL; |
b97bf3fd PL |
502 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
503 | imp++; | |
504 | return port_build_proto_msg(port_peerport(p_ptr), | |
505 | port_peernode(p_ptr), | |
23dd4cce | 506 | p_ptr->ref, |
b97bf3fd PL |
507 | tipc_own_addr, |
508 | imp, | |
509 | TIPC_CONN_MSG, | |
c4307285 | 510 | err, |
b97bf3fd PL |
511 | 0); |
512 | } | |
513 | ||
4323add6 | 514 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
515 | { |
516 | struct tipc_msg *msg = buf_msg(buf); | |
23dd4cce | 517 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 518 | u32 err = TIPC_OK; |
1fc54d8f SR |
519 | struct sk_buff *r_buf = NULL; |
520 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd | 521 | |
b97bf3fd PL |
522 | if (!p_ptr) { |
523 | err = TIPC_ERR_NO_PORT; | |
23dd4cce | 524 | } else if (p_ptr->connected) { |
96d841b7 AS |
525 | if ((port_peernode(p_ptr) != msg_orignode(msg)) || |
526 | (port_peerport(p_ptr) != msg_origport(msg))) { | |
b97bf3fd | 527 | err = TIPC_ERR_NO_PORT; |
96d841b7 | 528 | } else if (msg_type(msg) == CONN_ACK) { |
c4307285 | 529 | int wakeup = tipc_port_congested(p_ptr) && |
23dd4cce | 530 | p_ptr->congested && |
b97bf3fd PL |
531 | p_ptr->wakeup; |
532 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 533 | if (tipc_port_congested(p_ptr)) |
b97bf3fd | 534 | goto exit; |
23dd4cce | 535 | p_ptr->congested = 0; |
b97bf3fd PL |
536 | if (!wakeup) |
537 | goto exit; | |
23dd4cce | 538 | p_ptr->wakeup(p_ptr); |
b97bf3fd PL |
539 | goto exit; |
540 | } | |
23dd4cce | 541 | } else if (p_ptr->published) { |
b97bf3fd PL |
542 | err = TIPC_ERR_NO_PORT; |
543 | } | |
544 | if (err) { | |
545 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
546 | msg_orignode(msg), |
547 | msg_destport(msg), | |
b97bf3fd | 548 | tipc_own_addr, |
06d82c91 | 549 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
550 | TIPC_CONN_MSG, |
551 | err, | |
b97bf3fd PL |
552 | 0); |
553 | goto exit; | |
554 | } | |
555 | ||
556 | /* All is fine */ | |
557 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
558 | r_buf = port_build_proto_msg(msg_origport(msg), |
559 | msg_orignode(msg), | |
560 | msg_destport(msg), | |
561 | tipc_own_addr, | |
b97bf3fd PL |
562 | CONN_MANAGER, |
563 | CONN_PROBE_REPLY, | |
564 | TIPC_OK, | |
b97bf3fd PL |
565 | 0); |
566 | } | |
567 | p_ptr->probing_state = CONFIRMED; | |
b97bf3fd PL |
568 | exit: |
569 | if (p_ptr) | |
4323add6 PL |
570 | tipc_port_unlock(p_ptr); |
571 | tipc_net_route_msg(r_buf); | |
572 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
573 | buf_discard(buf); |
574 | } | |
575 | ||
23dd4cce | 576 | static void port_print(struct tipc_port *p_ptr, struct print_buf *buf, int full_id) |
b97bf3fd | 577 | { |
c4307285 | 578 | struct publication *publ; |
b97bf3fd PL |
579 | |
580 | if (full_id) | |
c4307285 | 581 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 582 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
23dd4cce | 583 | tipc_node(tipc_own_addr), p_ptr->ref); |
b97bf3fd | 584 | else |
23dd4cce | 585 | tipc_printf(buf, "%-10u:", p_ptr->ref); |
b97bf3fd | 586 | |
23dd4cce | 587 | if (p_ptr->connected) { |
c4307285 YH |
588 | u32 dport = port_peerport(p_ptr); |
589 | u32 destnode = port_peernode(p_ptr); | |
590 | ||
591 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
592 | tipc_zone(destnode), tipc_cluster(destnode), | |
593 | tipc_node(destnode), dport); | |
23dd4cce | 594 | if (p_ptr->conn_type != 0) |
c4307285 | 595 | tipc_printf(buf, " via {%u,%u}", |
23dd4cce AS |
596 | p_ptr->conn_type, |
597 | p_ptr->conn_instance); | |
598 | } else if (p_ptr->published) { | |
c4307285 YH |
599 | tipc_printf(buf, " bound to"); |
600 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
601 | if (publ->lower == publ->upper) |
602 | tipc_printf(buf, " {%u,%u}", publ->type, | |
603 | publ->lower); | |
604 | else | |
c4307285 | 605 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 606 | publ->lower, publ->upper); |
c4307285 YH |
607 | } |
608 | } | |
609 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
610 | } |
611 | ||
612 | #define MAX_PORT_QUERY 32768 | |
613 | ||
4323add6 | 614 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
615 | { |
616 | struct sk_buff *buf; | |
617 | struct tlv_desc *rep_tlv; | |
618 | struct print_buf pb; | |
23dd4cce | 619 | struct tipc_port *p_ptr; |
b97bf3fd PL |
620 | int str_len; |
621 | ||
4323add6 | 622 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
623 | if (!buf) |
624 | return NULL; | |
625 | rep_tlv = (struct tlv_desc *)buf->data; | |
626 | ||
4323add6 PL |
627 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
628 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd | 629 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 630 | spin_lock_bh(p_ptr->lock); |
b97bf3fd | 631 | port_print(p_ptr, &pb, 0); |
23dd4cce | 632 | spin_unlock_bh(p_ptr->lock); |
b97bf3fd | 633 | } |
4323add6 PL |
634 | spin_unlock_bh(&tipc_port_list_lock); |
635 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
636 | |
637 | skb_put(buf, TLV_SPACE(str_len)); | |
638 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
639 | ||
640 | return buf; | |
641 | } | |
642 | ||
4323add6 | 643 | void tipc_port_reinit(void) |
b97bf3fd | 644 | { |
23dd4cce | 645 | struct tipc_port *p_ptr; |
b97bf3fd PL |
646 | struct tipc_msg *msg; |
647 | ||
4323add6 | 648 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 649 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 650 | msg = &p_ptr->phdr; |
b97bf3fd PL |
651 | if (msg_orignode(msg) == tipc_own_addr) |
652 | break; | |
6d4a6672 | 653 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
654 | msg_set_orignode(msg, tipc_own_addr); |
655 | } | |
4323add6 | 656 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
657 | } |
658 | ||
659 | ||
660 | /* | |
661 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
662 | * to the tipc_port interface. | |
663 | */ | |
664 | ||
665 | static void port_dispatcher_sigh(void *dummy) | |
666 | { | |
667 | struct sk_buff *buf; | |
668 | ||
669 | spin_lock_bh(&queue_lock); | |
670 | buf = msg_queue_head; | |
1fc54d8f | 671 | msg_queue_head = NULL; |
b97bf3fd PL |
672 | spin_unlock_bh(&queue_lock); |
673 | ||
674 | while (buf) { | |
23dd4cce | 675 | struct tipc_port *p_ptr; |
b97bf3fd PL |
676 | struct user_port *up_ptr; |
677 | struct tipc_portid orig; | |
678 | struct tipc_name_seq dseq; | |
679 | void *usr_handle; | |
680 | int connected; | |
681 | int published; | |
9688243b | 682 | u32 message_type; |
b97bf3fd PL |
683 | |
684 | struct sk_buff *next = buf->next; | |
685 | struct tipc_msg *msg = buf_msg(buf); | |
686 | u32 dref = msg_destport(msg); | |
c4307285 | 687 | |
9688243b AS |
688 | message_type = msg_type(msg); |
689 | if (message_type > TIPC_DIRECT_MSG) | |
690 | goto reject; /* Unsupported message type */ | |
691 | ||
4323add6 | 692 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
693 | if (!p_ptr) |
694 | goto reject; /* Port deleted while msg in queue */ | |
695 | ||
b97bf3fd PL |
696 | orig.ref = msg_origport(msg); |
697 | orig.node = msg_orignode(msg); | |
698 | up_ptr = p_ptr->user_port; | |
699 | usr_handle = up_ptr->usr_handle; | |
23dd4cce AS |
700 | connected = p_ptr->connected; |
701 | published = p_ptr->published; | |
b97bf3fd PL |
702 | |
703 | if (unlikely(msg_errcode(msg))) | |
704 | goto err; | |
705 | ||
9688243b | 706 | switch (message_type) { |
c4307285 | 707 | |
b97bf3fd PL |
708 | case TIPC_CONN_MSG:{ |
709 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
710 | u32 peer_port = port_peerport(p_ptr); | |
711 | u32 peer_node = port_peernode(p_ptr); | |
cb7ce914 | 712 | u32 dsz; |
b97bf3fd | 713 | |
4cec72c8 | 714 | tipc_port_unlock(p_ptr); |
5307e469 AS |
715 | if (unlikely(!cb)) |
716 | goto reject; | |
b97bf3fd | 717 | if (unlikely(!connected)) { |
84b07c16 | 718 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 719 | goto reject; |
84b07c16 AS |
720 | } else if ((msg_origport(msg) != peer_port) || |
721 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 722 | goto reject; |
cb7ce914 AS |
723 | dsz = msg_data_sz(msg); |
724 | if (unlikely(dsz && | |
725 | (++p_ptr->conn_unacked >= | |
726 | TIPC_FLOW_CONTROL_WIN))) | |
c4307285 | 727 | tipc_acknowledge(dref, |
23dd4cce | 728 | p_ptr->conn_unacked); |
b97bf3fd | 729 | skb_pull(buf, msg_hdr_sz(msg)); |
cb7ce914 | 730 | cb(usr_handle, dref, &buf, msg_data(msg), dsz); |
b97bf3fd PL |
731 | break; |
732 | } | |
733 | case TIPC_DIRECT_MSG:{ | |
734 | tipc_msg_event cb = up_ptr->msg_cb; | |
735 | ||
4cec72c8 | 736 | tipc_port_unlock(p_ptr); |
5307e469 | 737 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
738 | goto reject; |
739 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 740 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
741 | msg_data_sz(msg), msg_importance(msg), |
742 | &orig); | |
743 | break; | |
744 | } | |
9688243b | 745 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
746 | case TIPC_NAMED_MSG:{ |
747 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
748 | ||
4cec72c8 | 749 | tipc_port_unlock(p_ptr); |
5307e469 | 750 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
751 | goto reject; |
752 | dseq.type = msg_nametype(msg); | |
753 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
754 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
755 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 756 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 757 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
758 | msg_data_sz(msg), msg_importance(msg), |
759 | &orig, &dseq); | |
760 | break; | |
761 | } | |
762 | } | |
763 | if (buf) | |
764 | buf_discard(buf); | |
765 | buf = next; | |
766 | continue; | |
767 | err: | |
9688243b | 768 | switch (message_type) { |
c4307285 | 769 | |
b97bf3fd | 770 | case TIPC_CONN_MSG:{ |
c4307285 | 771 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
772 | up_ptr->conn_err_cb; |
773 | u32 peer_port = port_peerport(p_ptr); | |
774 | u32 peer_node = port_peernode(p_ptr); | |
775 | ||
4cec72c8 | 776 | tipc_port_unlock(p_ptr); |
5307e469 | 777 | if (!cb || !connected) |
b97bf3fd | 778 | break; |
5307e469 AS |
779 | if ((msg_origport(msg) != peer_port) || |
780 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
781 | break; |
782 | tipc_disconnect(dref); | |
783 | skb_pull(buf, msg_hdr_sz(msg)); | |
784 | cb(usr_handle, dref, &buf, msg_data(msg), | |
785 | msg_data_sz(msg), msg_errcode(msg)); | |
786 | break; | |
787 | } | |
788 | case TIPC_DIRECT_MSG:{ | |
789 | tipc_msg_err_event cb = up_ptr->err_cb; | |
790 | ||
4cec72c8 | 791 | tipc_port_unlock(p_ptr); |
5307e469 | 792 | if (!cb || connected) |
b97bf3fd PL |
793 | break; |
794 | skb_pull(buf, msg_hdr_sz(msg)); | |
795 | cb(usr_handle, dref, &buf, msg_data(msg), | |
796 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
797 | break; | |
798 | } | |
9688243b | 799 | case TIPC_MCAST_MSG: |
b97bf3fd | 800 | case TIPC_NAMED_MSG:{ |
c4307285 | 801 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
802 | up_ptr->named_err_cb; |
803 | ||
4cec72c8 | 804 | tipc_port_unlock(p_ptr); |
5307e469 | 805 | if (!cb || connected) |
b97bf3fd PL |
806 | break; |
807 | dseq.type = msg_nametype(msg); | |
808 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
809 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
810 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 811 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 812 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
813 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
814 | break; | |
815 | } | |
816 | } | |
817 | if (buf) | |
818 | buf_discard(buf); | |
819 | buf = next; | |
820 | continue; | |
821 | reject: | |
822 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
823 | buf = next; | |
824 | } | |
825 | } | |
826 | ||
827 | /* | |
828 | * port_dispatcher(): Dispatcher for messages destinated | |
829 | * to the tipc_port interface. Called with port locked. | |
830 | */ | |
831 | ||
832 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
833 | { | |
834 | buf->next = NULL; | |
835 | spin_lock_bh(&queue_lock); | |
836 | if (msg_queue_head) { | |
837 | msg_queue_tail->next = buf; | |
838 | msg_queue_tail = buf; | |
839 | } else { | |
840 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 841 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
842 | } |
843 | spin_unlock_bh(&queue_lock); | |
0e35fd5e | 844 | return 0; |
b97bf3fd PL |
845 | } |
846 | ||
c4307285 | 847 | /* |
b97bf3fd | 848 | * Wake up port after congestion: Called with port locked, |
c4307285 | 849 | * |
b97bf3fd PL |
850 | */ |
851 | ||
852 | static void port_wakeup_sh(unsigned long ref) | |
853 | { | |
23dd4cce | 854 | struct tipc_port *p_ptr; |
b97bf3fd | 855 | struct user_port *up_ptr; |
1fc54d8f SR |
856 | tipc_continue_event cb = NULL; |
857 | void *uh = NULL; | |
b97bf3fd | 858 | |
4323add6 | 859 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
860 | if (p_ptr) { |
861 | up_ptr = p_ptr->user_port; | |
862 | if (up_ptr) { | |
863 | cb = up_ptr->continue_event_cb; | |
864 | uh = up_ptr->usr_handle; | |
865 | } | |
4323add6 | 866 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
867 | } |
868 | if (cb) | |
869 | cb(uh, ref); | |
870 | } | |
871 | ||
872 | ||
873 | static void port_wakeup(struct tipc_port *p_ptr) | |
874 | { | |
4323add6 | 875 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
876 | } |
877 | ||
878 | void tipc_acknowledge(u32 ref, u32 ack) | |
879 | { | |
23dd4cce | 880 | struct tipc_port *p_ptr; |
1fc54d8f | 881 | struct sk_buff *buf = NULL; |
b97bf3fd | 882 | |
4323add6 | 883 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
884 | if (!p_ptr) |
885 | return; | |
23dd4cce AS |
886 | if (p_ptr->connected) { |
887 | p_ptr->conn_unacked -= ack; | |
b97bf3fd PL |
888 | buf = port_build_proto_msg(port_peerport(p_ptr), |
889 | port_peernode(p_ptr), | |
890 | ref, | |
891 | tipc_own_addr, | |
892 | CONN_MANAGER, | |
893 | CONN_ACK, | |
c4307285 | 894 | TIPC_OK, |
b97bf3fd PL |
895 | ack); |
896 | } | |
4323add6 PL |
897 | tipc_port_unlock(p_ptr); |
898 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
899 | } |
900 | ||
901 | /* | |
b0c1e928 | 902 | * tipc_createport(): user level call. |
b97bf3fd PL |
903 | */ |
904 | ||
b0c1e928 | 905 | int tipc_createport(void *usr_handle, |
c4307285 YH |
906 | unsigned int importance, |
907 | tipc_msg_err_event error_cb, | |
908 | tipc_named_msg_err_event named_error_cb, | |
909 | tipc_conn_shutdown_event conn_error_cb, | |
910 | tipc_msg_event msg_cb, | |
911 | tipc_named_msg_event named_msg_cb, | |
912 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
913 | tipc_continue_event continue_event_cb,/* May be zero */ |
914 | u32 *portref) | |
915 | { | |
916 | struct user_port *up_ptr; | |
23dd4cce | 917 | struct tipc_port *p_ptr; |
b97bf3fd | 918 | |
0da974f4 | 919 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 920 | if (!up_ptr) { |
a75bf874 | 921 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
922 | return -ENOMEM; |
923 | } | |
23dd4cce | 924 | p_ptr = (struct tipc_port *)tipc_createport_raw(NULL, port_dispatcher, |
0ea52241 AS |
925 | port_wakeup, importance); |
926 | if (!p_ptr) { | |
b97bf3fd PL |
927 | kfree(up_ptr); |
928 | return -ENOMEM; | |
929 | } | |
930 | ||
931 | p_ptr->user_port = up_ptr; | |
b97bf3fd | 932 | up_ptr->usr_handle = usr_handle; |
23dd4cce | 933 | up_ptr->ref = p_ptr->ref; |
b97bf3fd PL |
934 | up_ptr->err_cb = error_cb; |
935 | up_ptr->named_err_cb = named_error_cb; | |
936 | up_ptr->conn_err_cb = conn_error_cb; | |
937 | up_ptr->msg_cb = msg_cb; | |
938 | up_ptr->named_msg_cb = named_msg_cb; | |
939 | up_ptr->conn_msg_cb = conn_msg_cb; | |
940 | up_ptr->continue_event_cb = continue_event_cb; | |
23dd4cce | 941 | *portref = p_ptr->ref; |
4323add6 | 942 | tipc_port_unlock(p_ptr); |
0e35fd5e | 943 | return 0; |
b97bf3fd PL |
944 | } |
945 | ||
b97bf3fd PL |
946 | int tipc_portimportance(u32 ref, unsigned int *importance) |
947 | { | |
23dd4cce | 948 | struct tipc_port *p_ptr; |
c4307285 | 949 | |
4323add6 | 950 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
951 | if (!p_ptr) |
952 | return -EINVAL; | |
23dd4cce | 953 | *importance = (unsigned int)msg_importance(&p_ptr->phdr); |
4cec72c8 | 954 | tipc_port_unlock(p_ptr); |
0e35fd5e | 955 | return 0; |
b97bf3fd PL |
956 | } |
957 | ||
958 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
959 | { | |
23dd4cce | 960 | struct tipc_port *p_ptr; |
b97bf3fd PL |
961 | |
962 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
963 | return -EINVAL; | |
964 | ||
4323add6 | 965 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
966 | if (!p_ptr) |
967 | return -EINVAL; | |
23dd4cce | 968 | msg_set_importance(&p_ptr->phdr, (u32)imp); |
4cec72c8 | 969 | tipc_port_unlock(p_ptr); |
0e35fd5e | 970 | return 0; |
b97bf3fd PL |
971 | } |
972 | ||
973 | ||
974 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
975 | { | |
23dd4cce | 976 | struct tipc_port *p_ptr; |
b97bf3fd PL |
977 | struct publication *publ; |
978 | u32 key; | |
979 | int res = -EINVAL; | |
980 | ||
4323add6 | 981 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
982 | if (!p_ptr) |
983 | return -EINVAL; | |
984 | ||
23dd4cce | 985 | if (p_ptr->connected) |
b97bf3fd PL |
986 | goto exit; |
987 | if (seq->lower > seq->upper) | |
988 | goto exit; | |
989 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
990 | goto exit; | |
991 | key = ref + p_ptr->pub_count + 1; | |
992 | if (key == ref) { | |
993 | res = -EADDRINUSE; | |
994 | goto exit; | |
995 | } | |
4323add6 | 996 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
23dd4cce | 997 | scope, p_ptr->ref, key); |
b97bf3fd PL |
998 | if (publ) { |
999 | list_add(&publ->pport_list, &p_ptr->publications); | |
1000 | p_ptr->pub_count++; | |
23dd4cce | 1001 | p_ptr->published = 1; |
0e35fd5e | 1002 | res = 0; |
b97bf3fd PL |
1003 | } |
1004 | exit: | |
4323add6 | 1005 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1006 | return res; |
1007 | } | |
1008 | ||
1009 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1010 | { | |
23dd4cce | 1011 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1012 | struct publication *publ; |
1013 | struct publication *tpubl; | |
1014 | int res = -EINVAL; | |
c4307285 | 1015 | |
4323add6 | 1016 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1017 | if (!p_ptr) |
1018 | return -EINVAL; | |
b97bf3fd | 1019 | if (!seq) { |
c4307285 | 1020 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1021 | &p_ptr->publications, pport_list) { |
c4307285 | 1022 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1023 | publ->ref, publ->key); |
b97bf3fd | 1024 | } |
0e35fd5e | 1025 | res = 0; |
b97bf3fd | 1026 | } else { |
c4307285 | 1027 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1028 | &p_ptr->publications, pport_list) { |
1029 | if (publ->scope != scope) | |
1030 | continue; | |
1031 | if (publ->type != seq->type) | |
1032 | continue; | |
1033 | if (publ->lower != seq->lower) | |
1034 | continue; | |
1035 | if (publ->upper != seq->upper) | |
1036 | break; | |
c4307285 | 1037 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1038 | publ->ref, publ->key); |
0e35fd5e | 1039 | res = 0; |
b97bf3fd PL |
1040 | break; |
1041 | } | |
1042 | } | |
1043 | if (list_empty(&p_ptr->publications)) | |
23dd4cce | 1044 | p_ptr->published = 0; |
4323add6 | 1045 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1046 | return res; |
1047 | } | |
1048 | ||
1049 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1050 | { | |
23dd4cce | 1051 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1052 | struct tipc_msg *msg; |
1053 | int res = -EINVAL; | |
1054 | ||
4323add6 | 1055 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1056 | if (!p_ptr) |
1057 | return -EINVAL; | |
23dd4cce | 1058 | if (p_ptr->published || p_ptr->connected) |
b97bf3fd PL |
1059 | goto exit; |
1060 | if (!peer->ref) | |
1061 | goto exit; | |
1062 | ||
23dd4cce | 1063 | msg = &p_ptr->phdr; |
b97bf3fd PL |
1064 | msg_set_destnode(msg, peer->node); |
1065 | msg_set_destport(msg, peer->ref); | |
1066 | msg_set_orignode(msg, tipc_own_addr); | |
23dd4cce | 1067 | msg_set_origport(msg, p_ptr->ref); |
b97bf3fd | 1068 | msg_set_type(msg, TIPC_CONN_MSG); |
53b94364 | 1069 | msg_set_lookup_scope(msg, 0); |
08c80e9a | 1070 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
1071 | |
1072 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1073 | p_ptr->probing_state = CONFIRMED; | |
23dd4cce | 1074 | p_ptr->connected = 1; |
b97bf3fd PL |
1075 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
1076 | ||
0e65967e | 1077 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 1078 | (void *)(unsigned long)ref, |
b97bf3fd | 1079 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 1080 | res = 0; |
b97bf3fd | 1081 | exit: |
4323add6 | 1082 | tipc_port_unlock(p_ptr); |
23dd4cce | 1083 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1084 | return res; |
1085 | } | |
1086 | ||
0c3141e9 AS |
1087 | /** |
1088 | * tipc_disconnect_port - disconnect port from peer | |
1089 | * | |
1090 | * Port must be locked. | |
1091 | */ | |
1092 | ||
1093 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1094 | { | |
1095 | int res; | |
1096 | ||
1097 | if (tp_ptr->connected) { | |
1098 | tp_ptr->connected = 0; | |
1099 | /* let timer expire on it's own to avoid deadlock! */ | |
1100 | tipc_nodesub_unsubscribe( | |
23dd4cce | 1101 | &((struct tipc_port *)tp_ptr)->subscription); |
0e35fd5e | 1102 | res = 0; |
0c3141e9 AS |
1103 | } else { |
1104 | res = -ENOTCONN; | |
1105 | } | |
1106 | return res; | |
1107 | } | |
1108 | ||
b97bf3fd PL |
1109 | /* |
1110 | * tipc_disconnect(): Disconnect port form peer. | |
1111 | * This is a node local operation. | |
1112 | */ | |
1113 | ||
1114 | int tipc_disconnect(u32 ref) | |
1115 | { | |
23dd4cce | 1116 | struct tipc_port *p_ptr; |
0c3141e9 | 1117 | int res; |
b97bf3fd | 1118 | |
4323add6 | 1119 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1120 | if (!p_ptr) |
1121 | return -EINVAL; | |
0c3141e9 | 1122 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1123 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1124 | return res; |
1125 | } | |
1126 | ||
1127 | /* | |
1128 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1129 | */ | |
1130 | int tipc_shutdown(u32 ref) | |
1131 | { | |
23dd4cce | 1132 | struct tipc_port *p_ptr; |
1fc54d8f | 1133 | struct sk_buff *buf = NULL; |
b97bf3fd | 1134 | |
4323add6 | 1135 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1136 | if (!p_ptr) |
1137 | return -EINVAL; | |
1138 | ||
23dd4cce AS |
1139 | if (p_ptr->connected) { |
1140 | u32 imp = msg_importance(&p_ptr->phdr); | |
b97bf3fd PL |
1141 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
1142 | imp++; | |
1143 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1144 | port_peernode(p_ptr), | |
1145 | ref, | |
1146 | tipc_own_addr, | |
1147 | imp, | |
1148 | TIPC_CONN_MSG, | |
c4307285 | 1149 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1150 | 0); |
1151 | } | |
4323add6 PL |
1152 | tipc_port_unlock(p_ptr); |
1153 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1154 | return tipc_disconnect(ref); |
1155 | } | |
1156 | ||
b97bf3fd | 1157 | /* |
4323add6 | 1158 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1159 | * message for this node. |
1160 | */ | |
1161 | ||
23dd4cce | 1162 | static int tipc_port_recv_sections(struct tipc_port *sender, unsigned int num_sect, |
31e3c3f6 | 1163 | struct iovec const *msg_sect) |
b97bf3fd PL |
1164 | { |
1165 | struct sk_buff *buf; | |
1166 | int res; | |
c4307285 | 1167 | |
23dd4cce | 1168 | res = tipc_msg_build(&sender->phdr, msg_sect, num_sect, |
b97bf3fd PL |
1169 | MAX_MSG_SIZE, !sender->user_port, &buf); |
1170 | if (likely(buf)) | |
4323add6 | 1171 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1172 | return res; |
1173 | } | |
1174 | ||
1175 | /** | |
1176 | * tipc_send - send message sections on connection | |
1177 | */ | |
1178 | ||
1179 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect) | |
1180 | { | |
23dd4cce | 1181 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1182 | u32 destnode; |
1183 | int res; | |
1184 | ||
4323add6 | 1185 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1186 | if (!p_ptr || !p_ptr->connected) |
b97bf3fd PL |
1187 | return -EINVAL; |
1188 | ||
23dd4cce | 1189 | p_ptr->congested = 1; |
4323add6 | 1190 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1191 | destnode = port_peernode(p_ptr); |
1192 | if (likely(destnode != tipc_own_addr)) | |
4323add6 PL |
1193 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
1194 | destnode); | |
b97bf3fd | 1195 | else |
4323add6 | 1196 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
b97bf3fd PL |
1197 | |
1198 | if (likely(res != -ELINKCONG)) { | |
23dd4cce | 1199 | p_ptr->congested = 0; |
cb7ce914 AS |
1200 | if (res > 0) |
1201 | p_ptr->sent++; | |
b97bf3fd PL |
1202 | return res; |
1203 | } | |
1204 | } | |
1205 | if (port_unreliable(p_ptr)) { | |
23dd4cce | 1206 | p_ptr->congested = 0; |
b97bf3fd | 1207 | /* Just calculate msg length and return */ |
c68ca7b7 | 1208 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1209 | } |
1210 | return -ELINKCONG; | |
1211 | } | |
1212 | ||
b97bf3fd | 1213 | /** |
12bae479 | 1214 | * tipc_send2name - send message sections to port name |
b97bf3fd PL |
1215 | */ |
1216 | ||
12bae479 AS |
1217 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
1218 | unsigned int num_sect, struct iovec const *msg_sect) | |
b97bf3fd | 1219 | { |
23dd4cce | 1220 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1221 | struct tipc_msg *msg; |
1222 | u32 destnode = domain; | |
9ccc2eb4 | 1223 | u32 destport; |
b97bf3fd PL |
1224 | int res; |
1225 | ||
4323add6 | 1226 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1227 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1228 | return -EINVAL; |
1229 | ||
23dd4cce | 1230 | msg = &p_ptr->phdr; |
b97bf3fd | 1231 | msg_set_type(msg, TIPC_NAMED_MSG); |
12bae479 AS |
1232 | msg_set_orignode(msg, tipc_own_addr); |
1233 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1234 | msg_set_hdr_sz(msg, LONG_H_SIZE); |
1235 | msg_set_nametype(msg, name->type); | |
1236 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 1237 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 1238 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1239 | msg_set_destnode(msg, destnode); |
1240 | msg_set_destport(msg, destport); | |
1241 | ||
5d9c54c1 | 1242 | if (likely(destport)) { |
b97bf3fd | 1243 | if (likely(destnode == tipc_own_addr)) |
cb7ce914 AS |
1244 | res = tipc_port_recv_sections(p_ptr, num_sect, |
1245 | msg_sect); | |
1246 | else | |
1247 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, | |
1248 | num_sect, destnode); | |
1249 | if (likely(res != -ELINKCONG)) { | |
1250 | if (res > 0) | |
1251 | p_ptr->sent++; | |
b97bf3fd | 1252 | return res; |
cb7ce914 | 1253 | } |
b97bf3fd PL |
1254 | if (port_unreliable(p_ptr)) { |
1255 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1256 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1257 | } |
1258 | return -ELINKCONG; | |
1259 | } | |
c4307285 | 1260 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
4323add6 | 1261 | TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1262 | } |
1263 | ||
1264 | /** | |
12bae479 | 1265 | * tipc_send2port - send message sections to port identity |
b97bf3fd PL |
1266 | */ |
1267 | ||
12bae479 AS |
1268 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
1269 | unsigned int num_sect, struct iovec const *msg_sect) | |
b97bf3fd | 1270 | { |
23dd4cce | 1271 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1272 | struct tipc_msg *msg; |
1273 | int res; | |
1274 | ||
4323add6 | 1275 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1276 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1277 | return -EINVAL; |
1278 | ||
23dd4cce | 1279 | msg = &p_ptr->phdr; |
b97bf3fd | 1280 | msg_set_type(msg, TIPC_DIRECT_MSG); |
53b94364 | 1281 | msg_set_lookup_scope(msg, 0); |
12bae479 AS |
1282 | msg_set_orignode(msg, tipc_own_addr); |
1283 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1284 | msg_set_destnode(msg, dest->node); |
1285 | msg_set_destport(msg, dest->ref); | |
1286 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
cb7ce914 | 1287 | |
b97bf3fd | 1288 | if (dest->node == tipc_own_addr) |
cb7ce914 AS |
1289 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect); |
1290 | else | |
1291 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, | |
1292 | dest->node); | |
1293 | if (likely(res != -ELINKCONG)) { | |
1294 | if (res > 0) | |
1295 | p_ptr->sent++; | |
b97bf3fd | 1296 | return res; |
cb7ce914 | 1297 | } |
b97bf3fd PL |
1298 | if (port_unreliable(p_ptr)) { |
1299 | /* Just calculate msg length and return */ | |
c68ca7b7 | 1300 | return tipc_msg_calc_data_size(msg_sect, num_sect); |
b97bf3fd PL |
1301 | } |
1302 | return -ELINKCONG; | |
1303 | } | |
1304 | ||
c4307285 | 1305 | /** |
12bae479 | 1306 | * tipc_send_buf2port - send message buffer to port identity |
b97bf3fd PL |
1307 | */ |
1308 | ||
12bae479 AS |
1309 | int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest, |
1310 | struct sk_buff *buf, unsigned int dsz) | |
b97bf3fd | 1311 | { |
23dd4cce | 1312 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1313 | struct tipc_msg *msg; |
1314 | int res; | |
1315 | ||
23dd4cce AS |
1316 | p_ptr = (struct tipc_port *)tipc_ref_deref(ref); |
1317 | if (!p_ptr || p_ptr->connected) | |
b97bf3fd PL |
1318 | return -EINVAL; |
1319 | ||
23dd4cce | 1320 | msg = &p_ptr->phdr; |
b97bf3fd | 1321 | msg_set_type(msg, TIPC_DIRECT_MSG); |
12bae479 AS |
1322 | msg_set_orignode(msg, tipc_own_addr); |
1323 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1324 | msg_set_destnode(msg, dest->node); |
1325 | msg_set_destport(msg, dest->ref); | |
1326 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
b97bf3fd PL |
1327 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); |
1328 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1329 | return -ENOMEM; | |
1330 | ||
1331 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1332 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
cb7ce914 | 1333 | |
b97bf3fd | 1334 | if (dest->node == tipc_own_addr) |
cb7ce914 AS |
1335 | res = tipc_port_recv_msg(buf); |
1336 | else | |
1337 | res = tipc_send_buf_fast(buf, dest->node); | |
1338 | if (likely(res != -ELINKCONG)) { | |
1339 | if (res > 0) | |
1340 | p_ptr->sent++; | |
b97bf3fd | 1341 | return res; |
cb7ce914 | 1342 | } |
b97bf3fd PL |
1343 | if (port_unreliable(p_ptr)) |
1344 | return dsz; | |
1345 | return -ELINKCONG; | |
1346 | } | |
1347 |