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, |
26896904 AS |
77 | u32 num_sect, struct iovec const *msg_sect, |
78 | unsigned int total_len) | |
b97bf3fd PL |
79 | { |
80 | struct tipc_msg *hdr; | |
81 | struct sk_buff *buf; | |
82 | struct sk_buff *ibuf = NULL; | |
83 | struct port_list dports = {0, NULL, }; | |
23dd4cce | 84 | struct tipc_port *oport = tipc_port_deref(ref); |
b97bf3fd PL |
85 | int ext_targets; |
86 | int res; | |
87 | ||
88 | if (unlikely(!oport)) | |
89 | return -EINVAL; | |
90 | ||
91 | /* Create multicast message */ | |
92 | ||
23dd4cce | 93 | hdr = &oport->phdr; |
b97bf3fd | 94 | msg_set_type(hdr, TIPC_MCAST_MSG); |
53b94364 | 95 | msg_set_lookup_scope(hdr, TIPC_CLUSTER_SCOPE); |
7462b9e9 AS |
96 | msg_set_destport(hdr, 0); |
97 | msg_set_destnode(hdr, 0); | |
b97bf3fd PL |
98 | msg_set_nametype(hdr, seq->type); |
99 | msg_set_namelower(hdr, seq->lower); | |
100 | msg_set_nameupper(hdr, seq->upper); | |
101 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | |
26896904 | 102 | res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE, |
b97bf3fd PL |
103 | !oport->user_port, &buf); |
104 | if (unlikely(!buf)) | |
105 | return res; | |
106 | ||
107 | /* Figure out where to send multicast message */ | |
108 | ||
4323add6 PL |
109 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
110 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
111 | |
112 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
113 | |
114 | if (ext_targets) { | |
115 | if (dports.count != 0) { | |
116 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
117 | if (ibuf == NULL) { | |
4323add6 | 118 | tipc_port_list_free(&dports); |
b97bf3fd PL |
119 | buf_discard(buf); |
120 | return -ENOMEM; | |
121 | } | |
122 | } | |
4323add6 | 123 | res = tipc_bclink_send_msg(buf); |
a016892c | 124 | if ((res < 0) && (dports.count != 0)) |
b97bf3fd | 125 | buf_discard(ibuf); |
b97bf3fd PL |
126 | } else { |
127 | ibuf = buf; | |
128 | } | |
129 | ||
130 | if (res >= 0) { | |
131 | if (ibuf) | |
4323add6 | 132 | tipc_port_recv_mcast(ibuf, &dports); |
b97bf3fd | 133 | } else { |
4323add6 | 134 | tipc_port_list_free(&dports); |
b97bf3fd PL |
135 | } |
136 | return res; | |
137 | } | |
138 | ||
139 | /** | |
4323add6 | 140 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
c4307285 | 141 | * |
b97bf3fd PL |
142 | * If there is no port list, perform a lookup to create one |
143 | */ | |
144 | ||
4323add6 | 145 | void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp) |
b97bf3fd | 146 | { |
0e65967e | 147 | struct tipc_msg *msg; |
b97bf3fd PL |
148 | struct port_list dports = {0, NULL, }; |
149 | struct port_list *item = dp; | |
150 | int cnt = 0; | |
151 | ||
b97bf3fd PL |
152 | msg = buf_msg(buf); |
153 | ||
154 | /* Create destination port list, if one wasn't supplied */ | |
155 | ||
156 | if (dp == NULL) { | |
4323add6 | 157 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
158 | msg_namelower(msg), |
159 | msg_nameupper(msg), | |
160 | TIPC_CLUSTER_SCOPE, | |
161 | &dports); | |
162 | item = dp = &dports; | |
163 | } | |
164 | ||
165 | /* Deliver a copy of message to each destination port */ | |
166 | ||
167 | if (dp->count != 0) { | |
7f47f5c7 | 168 | msg_set_destnode(msg, tipc_own_addr); |
b97bf3fd PL |
169 | if (dp->count == 1) { |
170 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
171 | tipc_port_recv_msg(buf); |
172 | tipc_port_list_free(dp); | |
b97bf3fd PL |
173 | return; |
174 | } | |
175 | for (; cnt < dp->count; cnt++) { | |
176 | int index = cnt % PLSIZE; | |
177 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
178 | ||
179 | if (b == NULL) { | |
a10bd924 | 180 | warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
181 | goto exit; |
182 | } | |
a016892c | 183 | if ((index == 0) && (cnt != 0)) |
b97bf3fd | 184 | item = item->next; |
0e65967e | 185 | msg_set_destport(buf_msg(b), item->ports[index]); |
4323add6 | 186 | tipc_port_recv_msg(b); |
b97bf3fd PL |
187 | } |
188 | } | |
189 | exit: | |
190 | buf_discard(buf); | |
4323add6 | 191 | tipc_port_list_free(dp); |
b97bf3fd PL |
192 | } |
193 | ||
194 | /** | |
7ef43eba | 195 | * tipc_createport_raw - create a generic TIPC port |
c4307285 | 196 | * |
0ea52241 | 197 | * Returns pointer to (locked) TIPC port, or NULL if unable to create it |
b97bf3fd PL |
198 | */ |
199 | ||
0ea52241 | 200 | struct tipc_port *tipc_createport_raw(void *usr_handle, |
b97bf3fd PL |
201 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), |
202 | void (*wakeup)(struct tipc_port *), | |
0ea52241 | 203 | const u32 importance) |
b97bf3fd | 204 | { |
23dd4cce | 205 | struct tipc_port *p_ptr; |
b97bf3fd PL |
206 | struct tipc_msg *msg; |
207 | u32 ref; | |
208 | ||
0da974f4 | 209 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 AS |
210 | if (!p_ptr) { |
211 | warn("Port creation failed, no memory\n"); | |
0ea52241 | 212 | return NULL; |
b97bf3fd | 213 | } |
23dd4cce | 214 | ref = tipc_ref_acquire(p_ptr, &p_ptr->lock); |
b97bf3fd | 215 | if (!ref) { |
a10bd924 | 216 | warn("Port creation failed, reference table exhausted\n"); |
b97bf3fd | 217 | kfree(p_ptr); |
0ea52241 | 218 | return NULL; |
b97bf3fd PL |
219 | } |
220 | ||
23dd4cce AS |
221 | p_ptr->usr_handle = usr_handle; |
222 | p_ptr->max_pkt = MAX_PKT_DEFAULT; | |
223 | p_ptr->ref = ref; | |
224 | msg = &p_ptr->phdr; | |
c68ca7b7 | 225 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, LONG_H_SIZE, 0); |
b97bf3fd | 226 | msg_set_origport(msg, ref); |
b97bf3fd PL |
227 | INIT_LIST_HEAD(&p_ptr->wait_list); |
228 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd PL |
229 | p_ptr->dispatcher = dispatcher; |
230 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 231 | p_ptr->user_port = NULL; |
b97bf3fd | 232 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
4323add6 | 233 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
234 | INIT_LIST_HEAD(&p_ptr->publications); |
235 | INIT_LIST_HEAD(&p_ptr->port_list); | |
236 | list_add_tail(&p_ptr->port_list, &ports); | |
4323add6 | 237 | spin_unlock_bh(&tipc_port_list_lock); |
23dd4cce | 238 | return p_ptr; |
b97bf3fd PL |
239 | } |
240 | ||
241 | int tipc_deleteport(u32 ref) | |
242 | { | |
23dd4cce | 243 | struct tipc_port *p_ptr; |
1fc54d8f | 244 | struct sk_buff *buf = NULL; |
b97bf3fd | 245 | |
1fc54d8f | 246 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 247 | p_ptr = tipc_port_lock(ref); |
c4307285 | 248 | if (!p_ptr) |
b97bf3fd PL |
249 | return -EINVAL; |
250 | ||
4323add6 PL |
251 | tipc_ref_discard(ref); |
252 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
253 | |
254 | k_cancel_timer(&p_ptr->timer); | |
23dd4cce | 255 | if (p_ptr->connected) { |
b97bf3fd | 256 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
4323add6 | 257 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd | 258 | } |
e83504f7 | 259 | kfree(p_ptr->user_port); |
b97bf3fd | 260 | |
4323add6 | 261 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
262 | list_del(&p_ptr->port_list); |
263 | list_del(&p_ptr->wait_list); | |
4323add6 | 264 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
265 | k_term_timer(&p_ptr->timer); |
266 | kfree(p_ptr); | |
4323add6 | 267 | tipc_net_route_msg(buf); |
0e35fd5e | 268 | return 0; |
b97bf3fd PL |
269 | } |
270 | ||
23dd4cce | 271 | static int port_unreliable(struct tipc_port *p_ptr) |
b97bf3fd | 272 | { |
23dd4cce | 273 | return msg_src_droppable(&p_ptr->phdr); |
b97bf3fd PL |
274 | } |
275 | ||
276 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
277 | { | |
23dd4cce | 278 | struct tipc_port *p_ptr; |
c4307285 | 279 | |
4323add6 | 280 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
281 | if (!p_ptr) |
282 | return -EINVAL; | |
283 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 284 | tipc_port_unlock(p_ptr); |
0e35fd5e | 285 | return 0; |
b97bf3fd PL |
286 | } |
287 | ||
288 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
289 | { | |
23dd4cce | 290 | struct tipc_port *p_ptr; |
c4307285 | 291 | |
4323add6 | 292 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
293 | if (!p_ptr) |
294 | return -EINVAL; | |
23dd4cce | 295 | msg_set_src_droppable(&p_ptr->phdr, (isunreliable != 0)); |
4323add6 | 296 | tipc_port_unlock(p_ptr); |
0e35fd5e | 297 | return 0; |
b97bf3fd PL |
298 | } |
299 | ||
23dd4cce | 300 | static int port_unreturnable(struct tipc_port *p_ptr) |
b97bf3fd | 301 | { |
23dd4cce | 302 | return msg_dest_droppable(&p_ptr->phdr); |
b97bf3fd PL |
303 | } |
304 | ||
305 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
306 | { | |
23dd4cce | 307 | struct tipc_port *p_ptr; |
c4307285 | 308 | |
4323add6 | 309 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
310 | if (!p_ptr) |
311 | return -EINVAL; | |
312 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 313 | tipc_port_unlock(p_ptr); |
0e35fd5e | 314 | return 0; |
b97bf3fd PL |
315 | } |
316 | ||
317 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
318 | { | |
23dd4cce | 319 | struct tipc_port *p_ptr; |
c4307285 | 320 | |
4323add6 | 321 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
322 | if (!p_ptr) |
323 | return -EINVAL; | |
23dd4cce | 324 | msg_set_dest_droppable(&p_ptr->phdr, (isunrejectable != 0)); |
4323add6 | 325 | tipc_port_unlock(p_ptr); |
0e35fd5e | 326 | return 0; |
b97bf3fd PL |
327 | } |
328 | ||
c4307285 YH |
329 | /* |
330 | * port_build_proto_msg(): build a port level protocol | |
331 | * or a connection abortion message. Called with | |
b97bf3fd PL |
332 | * tipc_port lock on. |
333 | */ | |
334 | static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode, | |
335 | u32 origport, u32 orignode, | |
c4307285 | 336 | u32 usr, u32 type, u32 err, |
741de3e9 | 337 | u32 ack) |
b97bf3fd PL |
338 | { |
339 | struct sk_buff *buf; | |
340 | struct tipc_msg *msg; | |
c4307285 | 341 | |
31e3c3f6 | 342 | buf = tipc_buf_acquire(LONG_H_SIZE); |
b97bf3fd PL |
343 | if (buf) { |
344 | msg = buf_msg(buf); | |
c68ca7b7 | 345 | tipc_msg_init(msg, usr, type, LONG_H_SIZE, destnode); |
75715217 | 346 | msg_set_errcode(msg, err); |
b97bf3fd PL |
347 | msg_set_destport(msg, destport); |
348 | msg_set_origport(msg, origport); | |
b97bf3fd | 349 | msg_set_orignode(msg, orignode); |
b97bf3fd | 350 | msg_set_msgcnt(msg, ack); |
b97bf3fd PL |
351 | } |
352 | return buf; | |
353 | } | |
354 | ||
b97bf3fd PL |
355 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
356 | { | |
357 | struct tipc_msg *msg = buf_msg(buf); | |
358 | struct sk_buff *rbuf; | |
359 | struct tipc_msg *rmsg; | |
360 | int hdr_sz; | |
361 | u32 imp = msg_importance(msg); | |
362 | u32 data_sz = msg_data_sz(msg); | |
363 | ||
364 | if (data_sz > MAX_REJECT_SIZE) | |
365 | data_sz = MAX_REJECT_SIZE; | |
366 | if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE)) | |
367 | imp++; | |
b97bf3fd PL |
368 | |
369 | /* discard rejected message if it shouldn't be returned to sender */ | |
370 | if (msg_errcode(msg) || msg_dest_droppable(msg)) { | |
371 | buf_discard(buf); | |
372 | return data_sz; | |
373 | } | |
374 | ||
375 | /* construct rejected message */ | |
376 | if (msg_mcast(msg)) | |
377 | hdr_sz = MCAST_H_SIZE; | |
378 | else | |
379 | hdr_sz = LONG_H_SIZE; | |
31e3c3f6 | 380 | rbuf = tipc_buf_acquire(data_sz + hdr_sz); |
b97bf3fd PL |
381 | if (rbuf == NULL) { |
382 | buf_discard(buf); | |
383 | return data_sz; | |
384 | } | |
385 | rmsg = buf_msg(rbuf); | |
c68ca7b7 | 386 | tipc_msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg)); |
75715217 | 387 | msg_set_errcode(rmsg, err); |
b97bf3fd | 388 | msg_set_destport(rmsg, msg_origport(msg)); |
b97bf3fd | 389 | msg_set_origport(rmsg, msg_destport(msg)); |
99c14593 | 390 | if (msg_short(msg)) { |
b97bf3fd | 391 | msg_set_orignode(rmsg, tipc_own_addr); |
99c14593 AS |
392 | /* leave name type & instance as zeroes */ |
393 | } else { | |
b97bf3fd | 394 | msg_set_orignode(rmsg, msg_destnode(msg)); |
99c14593 AS |
395 | msg_set_nametype(rmsg, msg_nametype(msg)); |
396 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
397 | } | |
c4307285 | 398 | msg_set_size(rmsg, data_sz + hdr_sz); |
27d7ff46 | 399 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
400 | |
401 | /* send self-abort message when rejecting on a connected port */ | |
402 | if (msg_connected(msg)) { | |
1fc54d8f | 403 | struct sk_buff *abuf = NULL; |
23dd4cce | 404 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
405 | |
406 | if (p_ptr) { | |
23dd4cce | 407 | if (p_ptr->connected) |
b97bf3fd | 408 | abuf = port_build_self_abort_msg(p_ptr, err); |
4323add6 | 409 | tipc_port_unlock(p_ptr); |
b97bf3fd | 410 | } |
4323add6 | 411 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
412 | } |
413 | ||
414 | /* send rejected message */ | |
415 | buf_discard(buf); | |
4323add6 | 416 | tipc_net_route_msg(rbuf); |
b97bf3fd PL |
417 | return data_sz; |
418 | } | |
419 | ||
23dd4cce | 420 | int tipc_port_reject_sections(struct tipc_port *p_ptr, struct tipc_msg *hdr, |
4323add6 | 421 | struct iovec const *msg_sect, u32 num_sect, |
26896904 | 422 | unsigned int total_len, int err) |
b97bf3fd PL |
423 | { |
424 | struct sk_buff *buf; | |
425 | int res; | |
426 | ||
26896904 | 427 | res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE, |
b97bf3fd PL |
428 | !p_ptr->user_port, &buf); |
429 | if (!buf) | |
430 | return res; | |
431 | ||
432 | return tipc_reject_msg(buf, err); | |
433 | } | |
434 | ||
435 | static void port_timeout(unsigned long ref) | |
436 | { | |
23dd4cce | 437 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 438 | struct sk_buff *buf = NULL; |
b97bf3fd | 439 | |
065fd177 AS |
440 | if (!p_ptr) |
441 | return; | |
442 | ||
23dd4cce | 443 | if (!p_ptr->connected) { |
065fd177 | 444 | tipc_port_unlock(p_ptr); |
b97bf3fd | 445 | return; |
065fd177 | 446 | } |
b97bf3fd PL |
447 | |
448 | /* Last probe answered ? */ | |
449 | if (p_ptr->probing_state == PROBING) { | |
450 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
451 | } else { | |
452 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
453 | port_peernode(p_ptr), | |
23dd4cce | 454 | p_ptr->ref, |
b97bf3fd PL |
455 | tipc_own_addr, |
456 | CONN_MANAGER, | |
457 | CONN_PROBE, | |
c4307285 | 458 | TIPC_OK, |
b97bf3fd | 459 | 0); |
b97bf3fd PL |
460 | p_ptr->probing_state = PROBING; |
461 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
462 | } | |
4323add6 PL |
463 | tipc_port_unlock(p_ptr); |
464 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
465 | } |
466 | ||
467 | ||
468 | static void port_handle_node_down(unsigned long ref) | |
469 | { | |
23dd4cce | 470 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
0e65967e | 471 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
472 | |
473 | if (!p_ptr) | |
474 | return; | |
475 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
476 | tipc_port_unlock(p_ptr); |
477 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
478 | } |
479 | ||
480 | ||
23dd4cce | 481 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 482 | { |
23dd4cce | 483 | u32 imp = msg_importance(&p_ptr->phdr); |
b97bf3fd | 484 | |
23dd4cce | 485 | if (!p_ptr->connected) |
1fc54d8f | 486 | return NULL; |
b97bf3fd PL |
487 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
488 | imp++; | |
23dd4cce | 489 | return port_build_proto_msg(p_ptr->ref, |
b97bf3fd PL |
490 | tipc_own_addr, |
491 | port_peerport(p_ptr), | |
492 | port_peernode(p_ptr), | |
493 | imp, | |
494 | TIPC_CONN_MSG, | |
c4307285 | 495 | err, |
b97bf3fd PL |
496 | 0); |
497 | } | |
498 | ||
499 | ||
23dd4cce | 500 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 501 | { |
23dd4cce | 502 | u32 imp = msg_importance(&p_ptr->phdr); |
b97bf3fd | 503 | |
23dd4cce | 504 | if (!p_ptr->connected) |
1fc54d8f | 505 | return NULL; |
b97bf3fd PL |
506 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
507 | imp++; | |
508 | return port_build_proto_msg(port_peerport(p_ptr), | |
509 | port_peernode(p_ptr), | |
23dd4cce | 510 | p_ptr->ref, |
b97bf3fd PL |
511 | tipc_own_addr, |
512 | imp, | |
513 | TIPC_CONN_MSG, | |
c4307285 | 514 | err, |
b97bf3fd PL |
515 | 0); |
516 | } | |
517 | ||
4323add6 | 518 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
519 | { |
520 | struct tipc_msg *msg = buf_msg(buf); | |
23dd4cce | 521 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 522 | u32 err = TIPC_OK; |
1fc54d8f SR |
523 | struct sk_buff *r_buf = NULL; |
524 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd | 525 | |
b97bf3fd PL |
526 | if (!p_ptr) { |
527 | err = TIPC_ERR_NO_PORT; | |
23dd4cce | 528 | } else if (p_ptr->connected) { |
96d841b7 AS |
529 | if ((port_peernode(p_ptr) != msg_orignode(msg)) || |
530 | (port_peerport(p_ptr) != msg_origport(msg))) { | |
b97bf3fd | 531 | err = TIPC_ERR_NO_PORT; |
96d841b7 | 532 | } else if (msg_type(msg) == CONN_ACK) { |
c4307285 | 533 | int wakeup = tipc_port_congested(p_ptr) && |
23dd4cce | 534 | p_ptr->congested && |
b97bf3fd PL |
535 | p_ptr->wakeup; |
536 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 537 | if (tipc_port_congested(p_ptr)) |
b97bf3fd | 538 | goto exit; |
23dd4cce | 539 | p_ptr->congested = 0; |
b97bf3fd PL |
540 | if (!wakeup) |
541 | goto exit; | |
23dd4cce | 542 | p_ptr->wakeup(p_ptr); |
b97bf3fd PL |
543 | goto exit; |
544 | } | |
23dd4cce | 545 | } else if (p_ptr->published) { |
b97bf3fd PL |
546 | err = TIPC_ERR_NO_PORT; |
547 | } | |
548 | if (err) { | |
549 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
550 | msg_orignode(msg), |
551 | msg_destport(msg), | |
b97bf3fd | 552 | tipc_own_addr, |
06d82c91 | 553 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
554 | TIPC_CONN_MSG, |
555 | err, | |
b97bf3fd PL |
556 | 0); |
557 | goto exit; | |
558 | } | |
559 | ||
560 | /* All is fine */ | |
561 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
562 | r_buf = port_build_proto_msg(msg_origport(msg), |
563 | msg_orignode(msg), | |
564 | msg_destport(msg), | |
565 | tipc_own_addr, | |
b97bf3fd PL |
566 | CONN_MANAGER, |
567 | CONN_PROBE_REPLY, | |
568 | TIPC_OK, | |
b97bf3fd PL |
569 | 0); |
570 | } | |
571 | p_ptr->probing_state = CONFIRMED; | |
b97bf3fd PL |
572 | exit: |
573 | if (p_ptr) | |
4323add6 PL |
574 | tipc_port_unlock(p_ptr); |
575 | tipc_net_route_msg(r_buf); | |
576 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
577 | buf_discard(buf); |
578 | } | |
579 | ||
23dd4cce | 580 | static void port_print(struct tipc_port *p_ptr, struct print_buf *buf, int full_id) |
b97bf3fd | 581 | { |
c4307285 | 582 | struct publication *publ; |
b97bf3fd PL |
583 | |
584 | if (full_id) | |
c4307285 | 585 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 586 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
23dd4cce | 587 | tipc_node(tipc_own_addr), p_ptr->ref); |
b97bf3fd | 588 | else |
23dd4cce | 589 | tipc_printf(buf, "%-10u:", p_ptr->ref); |
b97bf3fd | 590 | |
23dd4cce | 591 | if (p_ptr->connected) { |
c4307285 YH |
592 | u32 dport = port_peerport(p_ptr); |
593 | u32 destnode = port_peernode(p_ptr); | |
594 | ||
595 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
596 | tipc_zone(destnode), tipc_cluster(destnode), | |
597 | tipc_node(destnode), dport); | |
23dd4cce | 598 | if (p_ptr->conn_type != 0) |
c4307285 | 599 | tipc_printf(buf, " via {%u,%u}", |
23dd4cce AS |
600 | p_ptr->conn_type, |
601 | p_ptr->conn_instance); | |
602 | } else if (p_ptr->published) { | |
c4307285 YH |
603 | tipc_printf(buf, " bound to"); |
604 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
605 | if (publ->lower == publ->upper) |
606 | tipc_printf(buf, " {%u,%u}", publ->type, | |
607 | publ->lower); | |
608 | else | |
c4307285 | 609 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 610 | publ->lower, publ->upper); |
c4307285 YH |
611 | } |
612 | } | |
613 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
614 | } |
615 | ||
616 | #define MAX_PORT_QUERY 32768 | |
617 | ||
4323add6 | 618 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
619 | { |
620 | struct sk_buff *buf; | |
621 | struct tlv_desc *rep_tlv; | |
622 | struct print_buf pb; | |
23dd4cce | 623 | struct tipc_port *p_ptr; |
b97bf3fd PL |
624 | int str_len; |
625 | ||
4323add6 | 626 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
627 | if (!buf) |
628 | return NULL; | |
629 | rep_tlv = (struct tlv_desc *)buf->data; | |
630 | ||
4323add6 PL |
631 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
632 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd | 633 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 634 | spin_lock_bh(p_ptr->lock); |
b97bf3fd | 635 | port_print(p_ptr, &pb, 0); |
23dd4cce | 636 | spin_unlock_bh(p_ptr->lock); |
b97bf3fd | 637 | } |
4323add6 PL |
638 | spin_unlock_bh(&tipc_port_list_lock); |
639 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
640 | |
641 | skb_put(buf, TLV_SPACE(str_len)); | |
642 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
643 | ||
644 | return buf; | |
645 | } | |
646 | ||
4323add6 | 647 | void tipc_port_reinit(void) |
b97bf3fd | 648 | { |
23dd4cce | 649 | struct tipc_port *p_ptr; |
b97bf3fd PL |
650 | struct tipc_msg *msg; |
651 | ||
4323add6 | 652 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 653 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 654 | msg = &p_ptr->phdr; |
b97bf3fd PL |
655 | if (msg_orignode(msg) == tipc_own_addr) |
656 | break; | |
6d4a6672 | 657 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
658 | msg_set_orignode(msg, tipc_own_addr); |
659 | } | |
4323add6 | 660 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
661 | } |
662 | ||
663 | ||
664 | /* | |
665 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
666 | * to the tipc_port interface. | |
667 | */ | |
668 | ||
669 | static void port_dispatcher_sigh(void *dummy) | |
670 | { | |
671 | struct sk_buff *buf; | |
672 | ||
673 | spin_lock_bh(&queue_lock); | |
674 | buf = msg_queue_head; | |
1fc54d8f | 675 | msg_queue_head = NULL; |
b97bf3fd PL |
676 | spin_unlock_bh(&queue_lock); |
677 | ||
678 | while (buf) { | |
23dd4cce | 679 | struct tipc_port *p_ptr; |
b97bf3fd PL |
680 | struct user_port *up_ptr; |
681 | struct tipc_portid orig; | |
682 | struct tipc_name_seq dseq; | |
683 | void *usr_handle; | |
684 | int connected; | |
685 | int published; | |
9688243b | 686 | u32 message_type; |
b97bf3fd PL |
687 | |
688 | struct sk_buff *next = buf->next; | |
689 | struct tipc_msg *msg = buf_msg(buf); | |
690 | u32 dref = msg_destport(msg); | |
c4307285 | 691 | |
9688243b AS |
692 | message_type = msg_type(msg); |
693 | if (message_type > TIPC_DIRECT_MSG) | |
694 | goto reject; /* Unsupported message type */ | |
695 | ||
4323add6 | 696 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
697 | if (!p_ptr) |
698 | goto reject; /* Port deleted while msg in queue */ | |
699 | ||
b97bf3fd PL |
700 | orig.ref = msg_origport(msg); |
701 | orig.node = msg_orignode(msg); | |
702 | up_ptr = p_ptr->user_port; | |
703 | usr_handle = up_ptr->usr_handle; | |
23dd4cce AS |
704 | connected = p_ptr->connected; |
705 | published = p_ptr->published; | |
b97bf3fd PL |
706 | |
707 | if (unlikely(msg_errcode(msg))) | |
708 | goto err; | |
709 | ||
9688243b | 710 | switch (message_type) { |
c4307285 | 711 | |
b97bf3fd PL |
712 | case TIPC_CONN_MSG:{ |
713 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
714 | u32 peer_port = port_peerport(p_ptr); | |
715 | u32 peer_node = port_peernode(p_ptr); | |
cb7ce914 | 716 | u32 dsz; |
b97bf3fd | 717 | |
4cec72c8 | 718 | tipc_port_unlock(p_ptr); |
5307e469 AS |
719 | if (unlikely(!cb)) |
720 | goto reject; | |
b97bf3fd | 721 | if (unlikely(!connected)) { |
84b07c16 | 722 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 723 | goto reject; |
84b07c16 AS |
724 | } else if ((msg_origport(msg) != peer_port) || |
725 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 726 | goto reject; |
cb7ce914 AS |
727 | dsz = msg_data_sz(msg); |
728 | if (unlikely(dsz && | |
729 | (++p_ptr->conn_unacked >= | |
730 | TIPC_FLOW_CONTROL_WIN))) | |
c4307285 | 731 | tipc_acknowledge(dref, |
23dd4cce | 732 | p_ptr->conn_unacked); |
b97bf3fd | 733 | skb_pull(buf, msg_hdr_sz(msg)); |
cb7ce914 | 734 | cb(usr_handle, dref, &buf, msg_data(msg), dsz); |
b97bf3fd PL |
735 | break; |
736 | } | |
737 | case TIPC_DIRECT_MSG:{ | |
738 | tipc_msg_event cb = up_ptr->msg_cb; | |
739 | ||
4cec72c8 | 740 | tipc_port_unlock(p_ptr); |
5307e469 | 741 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
742 | goto reject; |
743 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 744 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
745 | msg_data_sz(msg), msg_importance(msg), |
746 | &orig); | |
747 | break; | |
748 | } | |
9688243b | 749 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
750 | case TIPC_NAMED_MSG:{ |
751 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
752 | ||
4cec72c8 | 753 | tipc_port_unlock(p_ptr); |
5307e469 | 754 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
755 | goto reject; |
756 | dseq.type = msg_nametype(msg); | |
757 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
758 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
759 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 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, &dseq); | |
764 | break; | |
765 | } | |
766 | } | |
767 | if (buf) | |
768 | buf_discard(buf); | |
769 | buf = next; | |
770 | continue; | |
771 | err: | |
9688243b | 772 | switch (message_type) { |
c4307285 | 773 | |
b97bf3fd | 774 | case TIPC_CONN_MSG:{ |
c4307285 | 775 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
776 | up_ptr->conn_err_cb; |
777 | u32 peer_port = port_peerport(p_ptr); | |
778 | u32 peer_node = port_peernode(p_ptr); | |
779 | ||
4cec72c8 | 780 | tipc_port_unlock(p_ptr); |
5307e469 | 781 | if (!cb || !connected) |
b97bf3fd | 782 | break; |
5307e469 AS |
783 | if ((msg_origport(msg) != peer_port) || |
784 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
785 | break; |
786 | tipc_disconnect(dref); | |
787 | skb_pull(buf, msg_hdr_sz(msg)); | |
788 | cb(usr_handle, dref, &buf, msg_data(msg), | |
789 | msg_data_sz(msg), msg_errcode(msg)); | |
790 | break; | |
791 | } | |
792 | case TIPC_DIRECT_MSG:{ | |
793 | tipc_msg_err_event cb = up_ptr->err_cb; | |
794 | ||
4cec72c8 | 795 | tipc_port_unlock(p_ptr); |
5307e469 | 796 | if (!cb || connected) |
b97bf3fd PL |
797 | break; |
798 | skb_pull(buf, msg_hdr_sz(msg)); | |
799 | cb(usr_handle, dref, &buf, msg_data(msg), | |
800 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
801 | break; | |
802 | } | |
9688243b | 803 | case TIPC_MCAST_MSG: |
b97bf3fd | 804 | case TIPC_NAMED_MSG:{ |
c4307285 | 805 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
806 | up_ptr->named_err_cb; |
807 | ||
4cec72c8 | 808 | tipc_port_unlock(p_ptr); |
5307e469 | 809 | if (!cb || connected) |
b97bf3fd PL |
810 | break; |
811 | dseq.type = msg_nametype(msg); | |
812 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
813 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
814 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 815 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 816 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
817 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
818 | break; | |
819 | } | |
820 | } | |
821 | if (buf) | |
822 | buf_discard(buf); | |
823 | buf = next; | |
824 | continue; | |
825 | reject: | |
826 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
827 | buf = next; | |
828 | } | |
829 | } | |
830 | ||
831 | /* | |
832 | * port_dispatcher(): Dispatcher for messages destinated | |
833 | * to the tipc_port interface. Called with port locked. | |
834 | */ | |
835 | ||
836 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
837 | { | |
838 | buf->next = NULL; | |
839 | spin_lock_bh(&queue_lock); | |
840 | if (msg_queue_head) { | |
841 | msg_queue_tail->next = buf; | |
842 | msg_queue_tail = buf; | |
843 | } else { | |
844 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 845 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
846 | } |
847 | spin_unlock_bh(&queue_lock); | |
0e35fd5e | 848 | return 0; |
b97bf3fd PL |
849 | } |
850 | ||
c4307285 | 851 | /* |
b97bf3fd | 852 | * Wake up port after congestion: Called with port locked, |
c4307285 | 853 | * |
b97bf3fd PL |
854 | */ |
855 | ||
856 | static void port_wakeup_sh(unsigned long ref) | |
857 | { | |
23dd4cce | 858 | struct tipc_port *p_ptr; |
b97bf3fd | 859 | struct user_port *up_ptr; |
1fc54d8f SR |
860 | tipc_continue_event cb = NULL; |
861 | void *uh = NULL; | |
b97bf3fd | 862 | |
4323add6 | 863 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
864 | if (p_ptr) { |
865 | up_ptr = p_ptr->user_port; | |
866 | if (up_ptr) { | |
867 | cb = up_ptr->continue_event_cb; | |
868 | uh = up_ptr->usr_handle; | |
869 | } | |
4323add6 | 870 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
871 | } |
872 | if (cb) | |
873 | cb(uh, ref); | |
874 | } | |
875 | ||
876 | ||
877 | static void port_wakeup(struct tipc_port *p_ptr) | |
878 | { | |
4323add6 | 879 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
880 | } |
881 | ||
882 | void tipc_acknowledge(u32 ref, u32 ack) | |
883 | { | |
23dd4cce | 884 | struct tipc_port *p_ptr; |
1fc54d8f | 885 | struct sk_buff *buf = NULL; |
b97bf3fd | 886 | |
4323add6 | 887 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
888 | if (!p_ptr) |
889 | return; | |
23dd4cce AS |
890 | if (p_ptr->connected) { |
891 | p_ptr->conn_unacked -= ack; | |
b97bf3fd PL |
892 | buf = port_build_proto_msg(port_peerport(p_ptr), |
893 | port_peernode(p_ptr), | |
894 | ref, | |
895 | tipc_own_addr, | |
896 | CONN_MANAGER, | |
897 | CONN_ACK, | |
c4307285 | 898 | TIPC_OK, |
b97bf3fd PL |
899 | ack); |
900 | } | |
4323add6 PL |
901 | tipc_port_unlock(p_ptr); |
902 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
903 | } |
904 | ||
905 | /* | |
b0c1e928 | 906 | * tipc_createport(): user level call. |
b97bf3fd PL |
907 | */ |
908 | ||
b0c1e928 | 909 | int tipc_createport(void *usr_handle, |
c4307285 YH |
910 | unsigned int importance, |
911 | tipc_msg_err_event error_cb, | |
912 | tipc_named_msg_err_event named_error_cb, | |
913 | tipc_conn_shutdown_event conn_error_cb, | |
914 | tipc_msg_event msg_cb, | |
915 | tipc_named_msg_event named_msg_cb, | |
916 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
917 | tipc_continue_event continue_event_cb,/* May be zero */ |
918 | u32 *portref) | |
919 | { | |
920 | struct user_port *up_ptr; | |
23dd4cce | 921 | struct tipc_port *p_ptr; |
b97bf3fd | 922 | |
0da974f4 | 923 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 924 | if (!up_ptr) { |
a75bf874 | 925 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
926 | return -ENOMEM; |
927 | } | |
23dd4cce | 928 | p_ptr = (struct tipc_port *)tipc_createport_raw(NULL, port_dispatcher, |
0ea52241 AS |
929 | port_wakeup, importance); |
930 | if (!p_ptr) { | |
b97bf3fd PL |
931 | kfree(up_ptr); |
932 | return -ENOMEM; | |
933 | } | |
934 | ||
935 | p_ptr->user_port = up_ptr; | |
b97bf3fd | 936 | up_ptr->usr_handle = usr_handle; |
23dd4cce | 937 | up_ptr->ref = p_ptr->ref; |
b97bf3fd PL |
938 | up_ptr->err_cb = error_cb; |
939 | up_ptr->named_err_cb = named_error_cb; | |
940 | up_ptr->conn_err_cb = conn_error_cb; | |
941 | up_ptr->msg_cb = msg_cb; | |
942 | up_ptr->named_msg_cb = named_msg_cb; | |
943 | up_ptr->conn_msg_cb = conn_msg_cb; | |
944 | up_ptr->continue_event_cb = continue_event_cb; | |
23dd4cce | 945 | *portref = p_ptr->ref; |
4323add6 | 946 | tipc_port_unlock(p_ptr); |
0e35fd5e | 947 | return 0; |
b97bf3fd PL |
948 | } |
949 | ||
b97bf3fd PL |
950 | int tipc_portimportance(u32 ref, unsigned int *importance) |
951 | { | |
23dd4cce | 952 | struct tipc_port *p_ptr; |
c4307285 | 953 | |
4323add6 | 954 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
955 | if (!p_ptr) |
956 | return -EINVAL; | |
23dd4cce | 957 | *importance = (unsigned int)msg_importance(&p_ptr->phdr); |
4cec72c8 | 958 | tipc_port_unlock(p_ptr); |
0e35fd5e | 959 | return 0; |
b97bf3fd PL |
960 | } |
961 | ||
962 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
963 | { | |
23dd4cce | 964 | struct tipc_port *p_ptr; |
b97bf3fd PL |
965 | |
966 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
967 | return -EINVAL; | |
968 | ||
4323add6 | 969 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
970 | if (!p_ptr) |
971 | return -EINVAL; | |
23dd4cce | 972 | msg_set_importance(&p_ptr->phdr, (u32)imp); |
4cec72c8 | 973 | tipc_port_unlock(p_ptr); |
0e35fd5e | 974 | return 0; |
b97bf3fd PL |
975 | } |
976 | ||
977 | ||
978 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
979 | { | |
23dd4cce | 980 | struct tipc_port *p_ptr; |
b97bf3fd PL |
981 | struct publication *publ; |
982 | u32 key; | |
983 | int res = -EINVAL; | |
984 | ||
4323add6 | 985 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
986 | if (!p_ptr) |
987 | return -EINVAL; | |
988 | ||
23dd4cce | 989 | if (p_ptr->connected) |
b97bf3fd PL |
990 | goto exit; |
991 | if (seq->lower > seq->upper) | |
992 | goto exit; | |
993 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
994 | goto exit; | |
995 | key = ref + p_ptr->pub_count + 1; | |
996 | if (key == ref) { | |
997 | res = -EADDRINUSE; | |
998 | goto exit; | |
999 | } | |
4323add6 | 1000 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
23dd4cce | 1001 | scope, p_ptr->ref, key); |
b97bf3fd PL |
1002 | if (publ) { |
1003 | list_add(&publ->pport_list, &p_ptr->publications); | |
1004 | p_ptr->pub_count++; | |
23dd4cce | 1005 | p_ptr->published = 1; |
0e35fd5e | 1006 | res = 0; |
b97bf3fd PL |
1007 | } |
1008 | exit: | |
4323add6 | 1009 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1010 | return res; |
1011 | } | |
1012 | ||
1013 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1014 | { | |
23dd4cce | 1015 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1016 | struct publication *publ; |
1017 | struct publication *tpubl; | |
1018 | int res = -EINVAL; | |
c4307285 | 1019 | |
4323add6 | 1020 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1021 | if (!p_ptr) |
1022 | return -EINVAL; | |
b97bf3fd | 1023 | if (!seq) { |
c4307285 | 1024 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1025 | &p_ptr->publications, pport_list) { |
c4307285 | 1026 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1027 | publ->ref, publ->key); |
b97bf3fd | 1028 | } |
0e35fd5e | 1029 | res = 0; |
b97bf3fd | 1030 | } else { |
c4307285 | 1031 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1032 | &p_ptr->publications, pport_list) { |
1033 | if (publ->scope != scope) | |
1034 | continue; | |
1035 | if (publ->type != seq->type) | |
1036 | continue; | |
1037 | if (publ->lower != seq->lower) | |
1038 | continue; | |
1039 | if (publ->upper != seq->upper) | |
1040 | break; | |
c4307285 | 1041 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1042 | publ->ref, publ->key); |
0e35fd5e | 1043 | res = 0; |
b97bf3fd PL |
1044 | break; |
1045 | } | |
1046 | } | |
1047 | if (list_empty(&p_ptr->publications)) | |
23dd4cce | 1048 | p_ptr->published = 0; |
4323add6 | 1049 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1050 | return res; |
1051 | } | |
1052 | ||
1053 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1054 | { | |
23dd4cce | 1055 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1056 | struct tipc_msg *msg; |
1057 | int res = -EINVAL; | |
1058 | ||
4323add6 | 1059 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1060 | if (!p_ptr) |
1061 | return -EINVAL; | |
23dd4cce | 1062 | if (p_ptr->published || p_ptr->connected) |
b97bf3fd PL |
1063 | goto exit; |
1064 | if (!peer->ref) | |
1065 | goto exit; | |
1066 | ||
23dd4cce | 1067 | msg = &p_ptr->phdr; |
b97bf3fd PL |
1068 | msg_set_destnode(msg, peer->node); |
1069 | msg_set_destport(msg, peer->ref); | |
1070 | msg_set_orignode(msg, tipc_own_addr); | |
23dd4cce | 1071 | msg_set_origport(msg, p_ptr->ref); |
b97bf3fd | 1072 | msg_set_type(msg, TIPC_CONN_MSG); |
53b94364 | 1073 | msg_set_lookup_scope(msg, 0); |
08c80e9a | 1074 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
1075 | |
1076 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1077 | p_ptr->probing_state = CONFIRMED; | |
23dd4cce | 1078 | p_ptr->connected = 1; |
b97bf3fd PL |
1079 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
1080 | ||
0e65967e | 1081 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 1082 | (void *)(unsigned long)ref, |
b97bf3fd | 1083 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 1084 | res = 0; |
b97bf3fd | 1085 | exit: |
4323add6 | 1086 | tipc_port_unlock(p_ptr); |
23dd4cce | 1087 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1088 | return res; |
1089 | } | |
1090 | ||
0c3141e9 AS |
1091 | /** |
1092 | * tipc_disconnect_port - disconnect port from peer | |
1093 | * | |
1094 | * Port must be locked. | |
1095 | */ | |
1096 | ||
1097 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1098 | { | |
1099 | int res; | |
1100 | ||
1101 | if (tp_ptr->connected) { | |
1102 | tp_ptr->connected = 0; | |
1103 | /* let timer expire on it's own to avoid deadlock! */ | |
1104 | tipc_nodesub_unsubscribe( | |
23dd4cce | 1105 | &((struct tipc_port *)tp_ptr)->subscription); |
0e35fd5e | 1106 | res = 0; |
0c3141e9 AS |
1107 | } else { |
1108 | res = -ENOTCONN; | |
1109 | } | |
1110 | return res; | |
1111 | } | |
1112 | ||
b97bf3fd PL |
1113 | /* |
1114 | * tipc_disconnect(): Disconnect port form peer. | |
1115 | * This is a node local operation. | |
1116 | */ | |
1117 | ||
1118 | int tipc_disconnect(u32 ref) | |
1119 | { | |
23dd4cce | 1120 | struct tipc_port *p_ptr; |
0c3141e9 | 1121 | int res; |
b97bf3fd | 1122 | |
4323add6 | 1123 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1124 | if (!p_ptr) |
1125 | return -EINVAL; | |
0c3141e9 | 1126 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1127 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1128 | return res; |
1129 | } | |
1130 | ||
1131 | /* | |
1132 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1133 | */ | |
1134 | int tipc_shutdown(u32 ref) | |
1135 | { | |
23dd4cce | 1136 | struct tipc_port *p_ptr; |
1fc54d8f | 1137 | struct sk_buff *buf = NULL; |
b97bf3fd | 1138 | |
4323add6 | 1139 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1140 | if (!p_ptr) |
1141 | return -EINVAL; | |
1142 | ||
23dd4cce AS |
1143 | if (p_ptr->connected) { |
1144 | u32 imp = msg_importance(&p_ptr->phdr); | |
b97bf3fd PL |
1145 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
1146 | imp++; | |
1147 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1148 | port_peernode(p_ptr), | |
1149 | ref, | |
1150 | tipc_own_addr, | |
1151 | imp, | |
1152 | TIPC_CONN_MSG, | |
c4307285 | 1153 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1154 | 0); |
1155 | } | |
4323add6 PL |
1156 | tipc_port_unlock(p_ptr); |
1157 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1158 | return tipc_disconnect(ref); |
1159 | } | |
1160 | ||
b97bf3fd | 1161 | /* |
4323add6 | 1162 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1163 | * message for this node. |
1164 | */ | |
1165 | ||
23dd4cce | 1166 | static int tipc_port_recv_sections(struct tipc_port *sender, unsigned int num_sect, |
26896904 AS |
1167 | struct iovec const *msg_sect, |
1168 | unsigned int total_len) | |
b97bf3fd PL |
1169 | { |
1170 | struct sk_buff *buf; | |
1171 | int res; | |
c4307285 | 1172 | |
26896904 | 1173 | res = tipc_msg_build(&sender->phdr, msg_sect, num_sect, total_len, |
b97bf3fd PL |
1174 | MAX_MSG_SIZE, !sender->user_port, &buf); |
1175 | if (likely(buf)) | |
4323add6 | 1176 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1177 | return res; |
1178 | } | |
1179 | ||
1180 | /** | |
1181 | * tipc_send - send message sections on connection | |
1182 | */ | |
1183 | ||
26896904 AS |
1184 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect, |
1185 | unsigned int total_len) | |
b97bf3fd | 1186 | { |
23dd4cce | 1187 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1188 | u32 destnode; |
1189 | int res; | |
1190 | ||
4323add6 | 1191 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1192 | if (!p_ptr || !p_ptr->connected) |
b97bf3fd PL |
1193 | return -EINVAL; |
1194 | ||
23dd4cce | 1195 | p_ptr->congested = 1; |
4323add6 | 1196 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1197 | destnode = port_peernode(p_ptr); |
1198 | if (likely(destnode != tipc_own_addr)) | |
4323add6 | 1199 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
26896904 | 1200 | total_len, destnode); |
b97bf3fd | 1201 | else |
26896904 AS |
1202 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, |
1203 | total_len); | |
b97bf3fd PL |
1204 | |
1205 | if (likely(res != -ELINKCONG)) { | |
23dd4cce | 1206 | p_ptr->congested = 0; |
cb7ce914 AS |
1207 | if (res > 0) |
1208 | p_ptr->sent++; | |
b97bf3fd PL |
1209 | return res; |
1210 | } | |
1211 | } | |
1212 | if (port_unreliable(p_ptr)) { | |
23dd4cce | 1213 | p_ptr->congested = 0; |
26896904 | 1214 | return total_len; |
b97bf3fd PL |
1215 | } |
1216 | return -ELINKCONG; | |
1217 | } | |
1218 | ||
b97bf3fd | 1219 | /** |
12bae479 | 1220 | * tipc_send2name - send message sections to port name |
b97bf3fd PL |
1221 | */ |
1222 | ||
12bae479 | 1223 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
26896904 AS |
1224 | unsigned int num_sect, struct iovec const *msg_sect, |
1225 | unsigned int total_len) | |
b97bf3fd | 1226 | { |
23dd4cce | 1227 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1228 | struct tipc_msg *msg; |
1229 | u32 destnode = domain; | |
9ccc2eb4 | 1230 | u32 destport; |
b97bf3fd PL |
1231 | int res; |
1232 | ||
4323add6 | 1233 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1234 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1235 | return -EINVAL; |
1236 | ||
23dd4cce | 1237 | msg = &p_ptr->phdr; |
b97bf3fd | 1238 | msg_set_type(msg, TIPC_NAMED_MSG); |
12bae479 AS |
1239 | msg_set_orignode(msg, tipc_own_addr); |
1240 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1241 | msg_set_hdr_sz(msg, LONG_H_SIZE); |
1242 | msg_set_nametype(msg, name->type); | |
1243 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 1244 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 1245 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1246 | msg_set_destnode(msg, destnode); |
1247 | msg_set_destport(msg, destport); | |
1248 | ||
5d9c54c1 | 1249 | if (likely(destport)) { |
b97bf3fd | 1250 | if (likely(destnode == tipc_own_addr)) |
cb7ce914 | 1251 | res = tipc_port_recv_sections(p_ptr, num_sect, |
26896904 | 1252 | msg_sect, total_len); |
cb7ce914 AS |
1253 | else |
1254 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, | |
26896904 AS |
1255 | num_sect, total_len, |
1256 | destnode); | |
cb7ce914 AS |
1257 | if (likely(res != -ELINKCONG)) { |
1258 | if (res > 0) | |
1259 | p_ptr->sent++; | |
b97bf3fd | 1260 | return res; |
cb7ce914 | 1261 | } |
b97bf3fd | 1262 | if (port_unreliable(p_ptr)) { |
26896904 | 1263 | return total_len; |
b97bf3fd PL |
1264 | } |
1265 | return -ELINKCONG; | |
1266 | } | |
c4307285 | 1267 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
26896904 | 1268 | total_len, TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1269 | } |
1270 | ||
1271 | /** | |
12bae479 | 1272 | * tipc_send2port - send message sections to port identity |
b97bf3fd PL |
1273 | */ |
1274 | ||
12bae479 | 1275 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
26896904 AS |
1276 | unsigned int num_sect, struct iovec const *msg_sect, |
1277 | unsigned int total_len) | |
b97bf3fd | 1278 | { |
23dd4cce | 1279 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1280 | struct tipc_msg *msg; |
1281 | int res; | |
1282 | ||
4323add6 | 1283 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1284 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1285 | return -EINVAL; |
1286 | ||
23dd4cce | 1287 | msg = &p_ptr->phdr; |
b97bf3fd | 1288 | msg_set_type(msg, TIPC_DIRECT_MSG); |
53b94364 | 1289 | msg_set_lookup_scope(msg, 0); |
12bae479 AS |
1290 | msg_set_orignode(msg, tipc_own_addr); |
1291 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1292 | msg_set_destnode(msg, dest->node); |
1293 | msg_set_destport(msg, dest->ref); | |
1294 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
cb7ce914 | 1295 | |
b97bf3fd | 1296 | if (dest->node == tipc_own_addr) |
26896904 AS |
1297 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, |
1298 | total_len); | |
cb7ce914 AS |
1299 | else |
1300 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, | |
26896904 | 1301 | total_len, dest->node); |
cb7ce914 AS |
1302 | if (likely(res != -ELINKCONG)) { |
1303 | if (res > 0) | |
1304 | p_ptr->sent++; | |
b97bf3fd | 1305 | return res; |
cb7ce914 | 1306 | } |
b97bf3fd | 1307 | if (port_unreliable(p_ptr)) { |
26896904 | 1308 | return total_len; |
b97bf3fd PL |
1309 | } |
1310 | return -ELINKCONG; | |
1311 | } | |
1312 | ||
c4307285 | 1313 | /** |
12bae479 | 1314 | * tipc_send_buf2port - send message buffer to port identity |
b97bf3fd PL |
1315 | */ |
1316 | ||
12bae479 AS |
1317 | int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest, |
1318 | struct sk_buff *buf, unsigned int dsz) | |
b97bf3fd | 1319 | { |
23dd4cce | 1320 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1321 | struct tipc_msg *msg; |
1322 | int res; | |
1323 | ||
23dd4cce AS |
1324 | p_ptr = (struct tipc_port *)tipc_ref_deref(ref); |
1325 | if (!p_ptr || p_ptr->connected) | |
b97bf3fd PL |
1326 | return -EINVAL; |
1327 | ||
23dd4cce | 1328 | msg = &p_ptr->phdr; |
b97bf3fd | 1329 | msg_set_type(msg, TIPC_DIRECT_MSG); |
12bae479 AS |
1330 | msg_set_orignode(msg, tipc_own_addr); |
1331 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1332 | msg_set_destnode(msg, dest->node); |
1333 | msg_set_destport(msg, dest->ref); | |
1334 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
b97bf3fd PL |
1335 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); |
1336 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1337 | return -ENOMEM; | |
1338 | ||
1339 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1340 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
cb7ce914 | 1341 | |
b97bf3fd | 1342 | if (dest->node == tipc_own_addr) |
cb7ce914 AS |
1343 | res = tipc_port_recv_msg(buf); |
1344 | else | |
1345 | res = tipc_send_buf_fast(buf, dest->node); | |
1346 | if (likely(res != -ELINKCONG)) { | |
1347 | if (res > 0) | |
1348 | p_ptr->sent++; | |
b97bf3fd | 1349 | return res; |
cb7ce914 | 1350 | } |
b97bf3fd PL |
1351 | if (port_unreliable(p_ptr)) |
1352 | return dsz; | |
1353 | return -ELINKCONG; | |
1354 | } | |
1355 |