Commit | Line | Data |
---|---|---|
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 */ | |
76d12527 AS |
370 | |
371 | if (WARN(!msg_isdata(msg), | |
372 | "attempt to reject message with user=%u", msg_user(msg))) { | |
373 | dump_stack(); | |
374 | goto exit; | |
375 | } | |
acc631bf AS |
376 | if (msg_errcode(msg) || msg_dest_droppable(msg)) |
377 | goto exit; | |
b97bf3fd PL |
378 | |
379 | /* construct rejected message */ | |
380 | if (msg_mcast(msg)) | |
381 | hdr_sz = MCAST_H_SIZE; | |
382 | else | |
383 | hdr_sz = LONG_H_SIZE; | |
31e3c3f6 | 384 | rbuf = tipc_buf_acquire(data_sz + hdr_sz); |
acc631bf AS |
385 | if (rbuf == NULL) |
386 | goto exit; | |
387 | ||
b97bf3fd | 388 | rmsg = buf_msg(rbuf); |
c68ca7b7 | 389 | tipc_msg_init(rmsg, imp, msg_type(msg), hdr_sz, msg_orignode(msg)); |
75715217 | 390 | msg_set_errcode(rmsg, err); |
b97bf3fd | 391 | msg_set_destport(rmsg, msg_origport(msg)); |
b97bf3fd | 392 | msg_set_origport(rmsg, msg_destport(msg)); |
99c14593 | 393 | if (msg_short(msg)) { |
b97bf3fd | 394 | msg_set_orignode(rmsg, tipc_own_addr); |
99c14593 AS |
395 | /* leave name type & instance as zeroes */ |
396 | } else { | |
b97bf3fd | 397 | msg_set_orignode(rmsg, msg_destnode(msg)); |
99c14593 AS |
398 | msg_set_nametype(rmsg, msg_nametype(msg)); |
399 | msg_set_nameinst(rmsg, msg_nameinst(msg)); | |
400 | } | |
c4307285 | 401 | msg_set_size(rmsg, data_sz + hdr_sz); |
27d7ff46 | 402 | skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz); |
b97bf3fd PL |
403 | |
404 | /* send self-abort message when rejecting on a connected port */ | |
405 | if (msg_connected(msg)) { | |
1fc54d8f | 406 | struct sk_buff *abuf = NULL; |
23dd4cce | 407 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
408 | |
409 | if (p_ptr) { | |
23dd4cce | 410 | if (p_ptr->connected) |
b97bf3fd | 411 | abuf = port_build_self_abort_msg(p_ptr, err); |
4323add6 | 412 | tipc_port_unlock(p_ptr); |
b97bf3fd | 413 | } |
4323add6 | 414 | tipc_net_route_msg(abuf); |
b97bf3fd PL |
415 | } |
416 | ||
acc631bf AS |
417 | /* send returned message & dispose of rejected message */ |
418 | ||
4323add6 | 419 | tipc_net_route_msg(rbuf); |
acc631bf AS |
420 | exit: |
421 | buf_discard(buf); | |
b97bf3fd PL |
422 | return data_sz; |
423 | } | |
424 | ||
23dd4cce | 425 | int tipc_port_reject_sections(struct tipc_port *p_ptr, struct tipc_msg *hdr, |
4323add6 | 426 | struct iovec const *msg_sect, u32 num_sect, |
26896904 | 427 | unsigned int total_len, int err) |
b97bf3fd PL |
428 | { |
429 | struct sk_buff *buf; | |
430 | int res; | |
431 | ||
26896904 | 432 | res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE, |
b97bf3fd PL |
433 | !p_ptr->user_port, &buf); |
434 | if (!buf) | |
435 | return res; | |
436 | ||
437 | return tipc_reject_msg(buf, err); | |
438 | } | |
439 | ||
440 | static void port_timeout(unsigned long ref) | |
441 | { | |
23dd4cce | 442 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 443 | struct sk_buff *buf = NULL; |
b97bf3fd | 444 | |
065fd177 AS |
445 | if (!p_ptr) |
446 | return; | |
447 | ||
23dd4cce | 448 | if (!p_ptr->connected) { |
065fd177 | 449 | tipc_port_unlock(p_ptr); |
b97bf3fd | 450 | return; |
065fd177 | 451 | } |
b97bf3fd PL |
452 | |
453 | /* Last probe answered ? */ | |
454 | if (p_ptr->probing_state == PROBING) { | |
455 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
456 | } else { | |
457 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
458 | port_peernode(p_ptr), | |
23dd4cce | 459 | p_ptr->ref, |
b97bf3fd PL |
460 | tipc_own_addr, |
461 | CONN_MANAGER, | |
462 | CONN_PROBE, | |
c4307285 | 463 | TIPC_OK, |
b97bf3fd | 464 | 0); |
b97bf3fd PL |
465 | p_ptr->probing_state = PROBING; |
466 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
467 | } | |
4323add6 PL |
468 | tipc_port_unlock(p_ptr); |
469 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
470 | } |
471 | ||
472 | ||
473 | static void port_handle_node_down(unsigned long ref) | |
474 | { | |
23dd4cce | 475 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
0e65967e | 476 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
477 | |
478 | if (!p_ptr) | |
479 | return; | |
480 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
481 | tipc_port_unlock(p_ptr); |
482 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
483 | } |
484 | ||
485 | ||
23dd4cce | 486 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 487 | { |
23dd4cce | 488 | u32 imp = msg_importance(&p_ptr->phdr); |
b97bf3fd | 489 | |
23dd4cce | 490 | if (!p_ptr->connected) |
1fc54d8f | 491 | return NULL; |
b97bf3fd PL |
492 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
493 | imp++; | |
23dd4cce | 494 | return port_build_proto_msg(p_ptr->ref, |
b97bf3fd PL |
495 | tipc_own_addr, |
496 | port_peerport(p_ptr), | |
497 | port_peernode(p_ptr), | |
498 | imp, | |
499 | TIPC_CONN_MSG, | |
c4307285 | 500 | err, |
b97bf3fd PL |
501 | 0); |
502 | } | |
503 | ||
504 | ||
23dd4cce | 505 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 506 | { |
23dd4cce | 507 | u32 imp = msg_importance(&p_ptr->phdr); |
b97bf3fd | 508 | |
23dd4cce | 509 | if (!p_ptr->connected) |
1fc54d8f | 510 | return NULL; |
b97bf3fd PL |
511 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
512 | imp++; | |
513 | return port_build_proto_msg(port_peerport(p_ptr), | |
514 | port_peernode(p_ptr), | |
23dd4cce | 515 | p_ptr->ref, |
b97bf3fd PL |
516 | tipc_own_addr, |
517 | imp, | |
518 | TIPC_CONN_MSG, | |
c4307285 | 519 | err, |
b97bf3fd PL |
520 | 0); |
521 | } | |
522 | ||
4323add6 | 523 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
524 | { |
525 | struct tipc_msg *msg = buf_msg(buf); | |
23dd4cce | 526 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd | 527 | u32 err = TIPC_OK; |
1fc54d8f SR |
528 | struct sk_buff *r_buf = NULL; |
529 | struct sk_buff *abort_buf = NULL; | |
b97bf3fd | 530 | |
b97bf3fd PL |
531 | if (!p_ptr) { |
532 | err = TIPC_ERR_NO_PORT; | |
23dd4cce | 533 | } else if (p_ptr->connected) { |
96d841b7 AS |
534 | if ((port_peernode(p_ptr) != msg_orignode(msg)) || |
535 | (port_peerport(p_ptr) != msg_origport(msg))) { | |
b97bf3fd | 536 | err = TIPC_ERR_NO_PORT; |
96d841b7 | 537 | } else if (msg_type(msg) == CONN_ACK) { |
c4307285 | 538 | int wakeup = tipc_port_congested(p_ptr) && |
23dd4cce | 539 | p_ptr->congested && |
b97bf3fd PL |
540 | p_ptr->wakeup; |
541 | p_ptr->acked += msg_msgcnt(msg); | |
4323add6 | 542 | if (tipc_port_congested(p_ptr)) |
b97bf3fd | 543 | goto exit; |
23dd4cce | 544 | p_ptr->congested = 0; |
b97bf3fd PL |
545 | if (!wakeup) |
546 | goto exit; | |
23dd4cce | 547 | p_ptr->wakeup(p_ptr); |
b97bf3fd PL |
548 | goto exit; |
549 | } | |
23dd4cce | 550 | } else if (p_ptr->published) { |
b97bf3fd PL |
551 | err = TIPC_ERR_NO_PORT; |
552 | } | |
553 | if (err) { | |
554 | r_buf = port_build_proto_msg(msg_origport(msg), | |
c4307285 YH |
555 | msg_orignode(msg), |
556 | msg_destport(msg), | |
b97bf3fd | 557 | tipc_own_addr, |
06d82c91 | 558 | TIPC_HIGH_IMPORTANCE, |
b97bf3fd PL |
559 | TIPC_CONN_MSG, |
560 | err, | |
b97bf3fd PL |
561 | 0); |
562 | goto exit; | |
563 | } | |
564 | ||
565 | /* All is fine */ | |
566 | if (msg_type(msg) == CONN_PROBE) { | |
c4307285 YH |
567 | r_buf = port_build_proto_msg(msg_origport(msg), |
568 | msg_orignode(msg), | |
569 | msg_destport(msg), | |
570 | tipc_own_addr, | |
b97bf3fd PL |
571 | CONN_MANAGER, |
572 | CONN_PROBE_REPLY, | |
573 | TIPC_OK, | |
b97bf3fd PL |
574 | 0); |
575 | } | |
576 | p_ptr->probing_state = CONFIRMED; | |
b97bf3fd PL |
577 | exit: |
578 | if (p_ptr) | |
4323add6 PL |
579 | tipc_port_unlock(p_ptr); |
580 | tipc_net_route_msg(r_buf); | |
581 | tipc_net_route_msg(abort_buf); | |
b97bf3fd PL |
582 | buf_discard(buf); |
583 | } | |
584 | ||
23dd4cce | 585 | static void port_print(struct tipc_port *p_ptr, struct print_buf *buf, int full_id) |
b97bf3fd | 586 | { |
c4307285 | 587 | struct publication *publ; |
b97bf3fd PL |
588 | |
589 | if (full_id) | |
c4307285 | 590 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 591 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
23dd4cce | 592 | tipc_node(tipc_own_addr), p_ptr->ref); |
b97bf3fd | 593 | else |
23dd4cce | 594 | tipc_printf(buf, "%-10u:", p_ptr->ref); |
b97bf3fd | 595 | |
23dd4cce | 596 | if (p_ptr->connected) { |
c4307285 YH |
597 | u32 dport = port_peerport(p_ptr); |
598 | u32 destnode = port_peernode(p_ptr); | |
599 | ||
600 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
601 | tipc_zone(destnode), tipc_cluster(destnode), | |
602 | tipc_node(destnode), dport); | |
23dd4cce | 603 | if (p_ptr->conn_type != 0) |
c4307285 | 604 | tipc_printf(buf, " via {%u,%u}", |
23dd4cce AS |
605 | p_ptr->conn_type, |
606 | p_ptr->conn_instance); | |
607 | } else if (p_ptr->published) { | |
c4307285 YH |
608 | tipc_printf(buf, " bound to"); |
609 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
610 | if (publ->lower == publ->upper) |
611 | tipc_printf(buf, " {%u,%u}", publ->type, | |
612 | publ->lower); | |
613 | else | |
c4307285 | 614 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 615 | publ->lower, publ->upper); |
c4307285 YH |
616 | } |
617 | } | |
618 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
619 | } |
620 | ||
621 | #define MAX_PORT_QUERY 32768 | |
622 | ||
4323add6 | 623 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
624 | { |
625 | struct sk_buff *buf; | |
626 | struct tlv_desc *rep_tlv; | |
627 | struct print_buf pb; | |
23dd4cce | 628 | struct tipc_port *p_ptr; |
b97bf3fd PL |
629 | int str_len; |
630 | ||
4323add6 | 631 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
632 | if (!buf) |
633 | return NULL; | |
634 | rep_tlv = (struct tlv_desc *)buf->data; | |
635 | ||
4323add6 PL |
636 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
637 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd | 638 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 639 | spin_lock_bh(p_ptr->lock); |
b97bf3fd | 640 | port_print(p_ptr, &pb, 0); |
23dd4cce | 641 | spin_unlock_bh(p_ptr->lock); |
b97bf3fd | 642 | } |
4323add6 PL |
643 | spin_unlock_bh(&tipc_port_list_lock); |
644 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
645 | |
646 | skb_put(buf, TLV_SPACE(str_len)); | |
647 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
648 | ||
649 | return buf; | |
650 | } | |
651 | ||
4323add6 | 652 | void tipc_port_reinit(void) |
b97bf3fd | 653 | { |
23dd4cce | 654 | struct tipc_port *p_ptr; |
b97bf3fd PL |
655 | struct tipc_msg *msg; |
656 | ||
4323add6 | 657 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 658 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 659 | msg = &p_ptr->phdr; |
b97bf3fd PL |
660 | if (msg_orignode(msg) == tipc_own_addr) |
661 | break; | |
6d4a6672 | 662 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
663 | msg_set_orignode(msg, tipc_own_addr); |
664 | } | |
4323add6 | 665 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
666 | } |
667 | ||
668 | ||
669 | /* | |
670 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
671 | * to the tipc_port interface. | |
672 | */ | |
673 | ||
674 | static void port_dispatcher_sigh(void *dummy) | |
675 | { | |
676 | struct sk_buff *buf; | |
677 | ||
678 | spin_lock_bh(&queue_lock); | |
679 | buf = msg_queue_head; | |
1fc54d8f | 680 | msg_queue_head = NULL; |
b97bf3fd PL |
681 | spin_unlock_bh(&queue_lock); |
682 | ||
683 | while (buf) { | |
23dd4cce | 684 | struct tipc_port *p_ptr; |
b97bf3fd PL |
685 | struct user_port *up_ptr; |
686 | struct tipc_portid orig; | |
687 | struct tipc_name_seq dseq; | |
688 | void *usr_handle; | |
689 | int connected; | |
690 | int published; | |
9688243b | 691 | u32 message_type; |
b97bf3fd PL |
692 | |
693 | struct sk_buff *next = buf->next; | |
694 | struct tipc_msg *msg = buf_msg(buf); | |
695 | u32 dref = msg_destport(msg); | |
c4307285 | 696 | |
9688243b AS |
697 | message_type = msg_type(msg); |
698 | if (message_type > TIPC_DIRECT_MSG) | |
699 | goto reject; /* Unsupported message type */ | |
700 | ||
4323add6 | 701 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
702 | if (!p_ptr) |
703 | goto reject; /* Port deleted while msg in queue */ | |
704 | ||
b97bf3fd PL |
705 | orig.ref = msg_origport(msg); |
706 | orig.node = msg_orignode(msg); | |
707 | up_ptr = p_ptr->user_port; | |
708 | usr_handle = up_ptr->usr_handle; | |
23dd4cce AS |
709 | connected = p_ptr->connected; |
710 | published = p_ptr->published; | |
b97bf3fd PL |
711 | |
712 | if (unlikely(msg_errcode(msg))) | |
713 | goto err; | |
714 | ||
9688243b | 715 | switch (message_type) { |
c4307285 | 716 | |
b97bf3fd PL |
717 | case TIPC_CONN_MSG:{ |
718 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
719 | u32 peer_port = port_peerport(p_ptr); | |
720 | u32 peer_node = port_peernode(p_ptr); | |
cb7ce914 | 721 | u32 dsz; |
b97bf3fd | 722 | |
4cec72c8 | 723 | tipc_port_unlock(p_ptr); |
5307e469 AS |
724 | if (unlikely(!cb)) |
725 | goto reject; | |
b97bf3fd | 726 | if (unlikely(!connected)) { |
84b07c16 | 727 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 728 | goto reject; |
84b07c16 AS |
729 | } else if ((msg_origport(msg) != peer_port) || |
730 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 731 | goto reject; |
cb7ce914 AS |
732 | dsz = msg_data_sz(msg); |
733 | if (unlikely(dsz && | |
734 | (++p_ptr->conn_unacked >= | |
735 | TIPC_FLOW_CONTROL_WIN))) | |
c4307285 | 736 | tipc_acknowledge(dref, |
23dd4cce | 737 | p_ptr->conn_unacked); |
b97bf3fd | 738 | skb_pull(buf, msg_hdr_sz(msg)); |
cb7ce914 | 739 | cb(usr_handle, dref, &buf, msg_data(msg), dsz); |
b97bf3fd PL |
740 | break; |
741 | } | |
742 | case TIPC_DIRECT_MSG:{ | |
743 | tipc_msg_event cb = up_ptr->msg_cb; | |
744 | ||
4cec72c8 | 745 | tipc_port_unlock(p_ptr); |
5307e469 | 746 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
747 | goto reject; |
748 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 749 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
750 | msg_data_sz(msg), msg_importance(msg), |
751 | &orig); | |
752 | break; | |
753 | } | |
9688243b | 754 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
755 | case TIPC_NAMED_MSG:{ |
756 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
757 | ||
4cec72c8 | 758 | tipc_port_unlock(p_ptr); |
5307e469 | 759 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
760 | goto reject; |
761 | dseq.type = msg_nametype(msg); | |
762 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
763 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
764 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 765 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 766 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
767 | msg_data_sz(msg), msg_importance(msg), |
768 | &orig, &dseq); | |
769 | break; | |
770 | } | |
771 | } | |
772 | if (buf) | |
773 | buf_discard(buf); | |
774 | buf = next; | |
775 | continue; | |
776 | err: | |
9688243b | 777 | switch (message_type) { |
c4307285 | 778 | |
b97bf3fd | 779 | case TIPC_CONN_MSG:{ |
c4307285 | 780 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
781 | up_ptr->conn_err_cb; |
782 | u32 peer_port = port_peerport(p_ptr); | |
783 | u32 peer_node = port_peernode(p_ptr); | |
784 | ||
4cec72c8 | 785 | tipc_port_unlock(p_ptr); |
5307e469 | 786 | if (!cb || !connected) |
b97bf3fd | 787 | break; |
5307e469 AS |
788 | if ((msg_origport(msg) != peer_port) || |
789 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
790 | break; |
791 | tipc_disconnect(dref); | |
792 | skb_pull(buf, msg_hdr_sz(msg)); | |
793 | cb(usr_handle, dref, &buf, msg_data(msg), | |
794 | msg_data_sz(msg), msg_errcode(msg)); | |
795 | break; | |
796 | } | |
797 | case TIPC_DIRECT_MSG:{ | |
798 | tipc_msg_err_event cb = up_ptr->err_cb; | |
799 | ||
4cec72c8 | 800 | tipc_port_unlock(p_ptr); |
5307e469 | 801 | if (!cb || connected) |
b97bf3fd PL |
802 | break; |
803 | skb_pull(buf, msg_hdr_sz(msg)); | |
804 | cb(usr_handle, dref, &buf, msg_data(msg), | |
805 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
806 | break; | |
807 | } | |
9688243b | 808 | case TIPC_MCAST_MSG: |
b97bf3fd | 809 | case TIPC_NAMED_MSG:{ |
c4307285 | 810 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
811 | up_ptr->named_err_cb; |
812 | ||
4cec72c8 | 813 | tipc_port_unlock(p_ptr); |
5307e469 | 814 | if (!cb || connected) |
b97bf3fd PL |
815 | break; |
816 | dseq.type = msg_nametype(msg); | |
817 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
818 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
819 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 820 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 821 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
822 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
823 | break; | |
824 | } | |
825 | } | |
826 | if (buf) | |
827 | buf_discard(buf); | |
828 | buf = next; | |
829 | continue; | |
830 | reject: | |
831 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
832 | buf = next; | |
833 | } | |
834 | } | |
835 | ||
836 | /* | |
837 | * port_dispatcher(): Dispatcher for messages destinated | |
838 | * to the tipc_port interface. Called with port locked. | |
839 | */ | |
840 | ||
841 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
842 | { | |
843 | buf->next = NULL; | |
844 | spin_lock_bh(&queue_lock); | |
845 | if (msg_queue_head) { | |
846 | msg_queue_tail->next = buf; | |
847 | msg_queue_tail = buf; | |
848 | } else { | |
849 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 850 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
851 | } |
852 | spin_unlock_bh(&queue_lock); | |
0e35fd5e | 853 | return 0; |
b97bf3fd PL |
854 | } |
855 | ||
c4307285 | 856 | /* |
b97bf3fd | 857 | * Wake up port after congestion: Called with port locked, |
c4307285 | 858 | * |
b97bf3fd PL |
859 | */ |
860 | ||
861 | static void port_wakeup_sh(unsigned long ref) | |
862 | { | |
23dd4cce | 863 | struct tipc_port *p_ptr; |
b97bf3fd | 864 | struct user_port *up_ptr; |
1fc54d8f SR |
865 | tipc_continue_event cb = NULL; |
866 | void *uh = NULL; | |
b97bf3fd | 867 | |
4323add6 | 868 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
869 | if (p_ptr) { |
870 | up_ptr = p_ptr->user_port; | |
871 | if (up_ptr) { | |
872 | cb = up_ptr->continue_event_cb; | |
873 | uh = up_ptr->usr_handle; | |
874 | } | |
4323add6 | 875 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
876 | } |
877 | if (cb) | |
878 | cb(uh, ref); | |
879 | } | |
880 | ||
881 | ||
882 | static void port_wakeup(struct tipc_port *p_ptr) | |
883 | { | |
4323add6 | 884 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
885 | } |
886 | ||
887 | void tipc_acknowledge(u32 ref, u32 ack) | |
888 | { | |
23dd4cce | 889 | struct tipc_port *p_ptr; |
1fc54d8f | 890 | struct sk_buff *buf = NULL; |
b97bf3fd | 891 | |
4323add6 | 892 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
893 | if (!p_ptr) |
894 | return; | |
23dd4cce AS |
895 | if (p_ptr->connected) { |
896 | p_ptr->conn_unacked -= ack; | |
b97bf3fd PL |
897 | buf = port_build_proto_msg(port_peerport(p_ptr), |
898 | port_peernode(p_ptr), | |
899 | ref, | |
900 | tipc_own_addr, | |
901 | CONN_MANAGER, | |
902 | CONN_ACK, | |
c4307285 | 903 | TIPC_OK, |
b97bf3fd PL |
904 | ack); |
905 | } | |
4323add6 PL |
906 | tipc_port_unlock(p_ptr); |
907 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
908 | } |
909 | ||
910 | /* | |
b0c1e928 | 911 | * tipc_createport(): user level call. |
b97bf3fd PL |
912 | */ |
913 | ||
b0c1e928 | 914 | int tipc_createport(void *usr_handle, |
c4307285 YH |
915 | unsigned int importance, |
916 | tipc_msg_err_event error_cb, | |
917 | tipc_named_msg_err_event named_error_cb, | |
918 | tipc_conn_shutdown_event conn_error_cb, | |
919 | tipc_msg_event msg_cb, | |
920 | tipc_named_msg_event named_msg_cb, | |
921 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
922 | tipc_continue_event continue_event_cb,/* May be zero */ |
923 | u32 *portref) | |
924 | { | |
925 | struct user_port *up_ptr; | |
23dd4cce | 926 | struct tipc_port *p_ptr; |
b97bf3fd | 927 | |
0da974f4 | 928 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 929 | if (!up_ptr) { |
a75bf874 | 930 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
931 | return -ENOMEM; |
932 | } | |
23dd4cce | 933 | p_ptr = (struct tipc_port *)tipc_createport_raw(NULL, port_dispatcher, |
0ea52241 AS |
934 | port_wakeup, importance); |
935 | if (!p_ptr) { | |
b97bf3fd PL |
936 | kfree(up_ptr); |
937 | return -ENOMEM; | |
938 | } | |
939 | ||
940 | p_ptr->user_port = up_ptr; | |
b97bf3fd | 941 | up_ptr->usr_handle = usr_handle; |
23dd4cce | 942 | up_ptr->ref = p_ptr->ref; |
b97bf3fd PL |
943 | up_ptr->err_cb = error_cb; |
944 | up_ptr->named_err_cb = named_error_cb; | |
945 | up_ptr->conn_err_cb = conn_error_cb; | |
946 | up_ptr->msg_cb = msg_cb; | |
947 | up_ptr->named_msg_cb = named_msg_cb; | |
948 | up_ptr->conn_msg_cb = conn_msg_cb; | |
949 | up_ptr->continue_event_cb = continue_event_cb; | |
23dd4cce | 950 | *portref = p_ptr->ref; |
4323add6 | 951 | tipc_port_unlock(p_ptr); |
0e35fd5e | 952 | return 0; |
b97bf3fd PL |
953 | } |
954 | ||
b97bf3fd PL |
955 | int tipc_portimportance(u32 ref, unsigned int *importance) |
956 | { | |
23dd4cce | 957 | struct tipc_port *p_ptr; |
c4307285 | 958 | |
4323add6 | 959 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
960 | if (!p_ptr) |
961 | return -EINVAL; | |
23dd4cce | 962 | *importance = (unsigned int)msg_importance(&p_ptr->phdr); |
4cec72c8 | 963 | tipc_port_unlock(p_ptr); |
0e35fd5e | 964 | return 0; |
b97bf3fd PL |
965 | } |
966 | ||
967 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
968 | { | |
23dd4cce | 969 | struct tipc_port *p_ptr; |
b97bf3fd PL |
970 | |
971 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
972 | return -EINVAL; | |
973 | ||
4323add6 | 974 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
975 | if (!p_ptr) |
976 | return -EINVAL; | |
23dd4cce | 977 | msg_set_importance(&p_ptr->phdr, (u32)imp); |
4cec72c8 | 978 | tipc_port_unlock(p_ptr); |
0e35fd5e | 979 | return 0; |
b97bf3fd PL |
980 | } |
981 | ||
982 | ||
983 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
984 | { | |
23dd4cce | 985 | struct tipc_port *p_ptr; |
b97bf3fd PL |
986 | struct publication *publ; |
987 | u32 key; | |
988 | int res = -EINVAL; | |
989 | ||
4323add6 | 990 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
991 | if (!p_ptr) |
992 | return -EINVAL; | |
993 | ||
23dd4cce | 994 | if (p_ptr->connected) |
b97bf3fd PL |
995 | goto exit; |
996 | if (seq->lower > seq->upper) | |
997 | goto exit; | |
998 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
999 | goto exit; | |
1000 | key = ref + p_ptr->pub_count + 1; | |
1001 | if (key == ref) { | |
1002 | res = -EADDRINUSE; | |
1003 | goto exit; | |
1004 | } | |
4323add6 | 1005 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
23dd4cce | 1006 | scope, p_ptr->ref, key); |
b97bf3fd PL |
1007 | if (publ) { |
1008 | list_add(&publ->pport_list, &p_ptr->publications); | |
1009 | p_ptr->pub_count++; | |
23dd4cce | 1010 | p_ptr->published = 1; |
0e35fd5e | 1011 | res = 0; |
b97bf3fd PL |
1012 | } |
1013 | exit: | |
4323add6 | 1014 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1015 | return res; |
1016 | } | |
1017 | ||
1018 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1019 | { | |
23dd4cce | 1020 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1021 | struct publication *publ; |
1022 | struct publication *tpubl; | |
1023 | int res = -EINVAL; | |
c4307285 | 1024 | |
4323add6 | 1025 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1026 | if (!p_ptr) |
1027 | return -EINVAL; | |
b97bf3fd | 1028 | if (!seq) { |
c4307285 | 1029 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1030 | &p_ptr->publications, pport_list) { |
c4307285 | 1031 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1032 | publ->ref, publ->key); |
b97bf3fd | 1033 | } |
0e35fd5e | 1034 | res = 0; |
b97bf3fd | 1035 | } else { |
c4307285 | 1036 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1037 | &p_ptr->publications, pport_list) { |
1038 | if (publ->scope != scope) | |
1039 | continue; | |
1040 | if (publ->type != seq->type) | |
1041 | continue; | |
1042 | if (publ->lower != seq->lower) | |
1043 | continue; | |
1044 | if (publ->upper != seq->upper) | |
1045 | break; | |
c4307285 | 1046 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1047 | publ->ref, publ->key); |
0e35fd5e | 1048 | res = 0; |
b97bf3fd PL |
1049 | break; |
1050 | } | |
1051 | } | |
1052 | if (list_empty(&p_ptr->publications)) | |
23dd4cce | 1053 | p_ptr->published = 0; |
4323add6 | 1054 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1055 | return res; |
1056 | } | |
1057 | ||
1058 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1059 | { | |
23dd4cce | 1060 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1061 | struct tipc_msg *msg; |
1062 | int res = -EINVAL; | |
1063 | ||
4323add6 | 1064 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1065 | if (!p_ptr) |
1066 | return -EINVAL; | |
23dd4cce | 1067 | if (p_ptr->published || p_ptr->connected) |
b97bf3fd PL |
1068 | goto exit; |
1069 | if (!peer->ref) | |
1070 | goto exit; | |
1071 | ||
23dd4cce | 1072 | msg = &p_ptr->phdr; |
b97bf3fd PL |
1073 | msg_set_destnode(msg, peer->node); |
1074 | msg_set_destport(msg, peer->ref); | |
1075 | msg_set_orignode(msg, tipc_own_addr); | |
23dd4cce | 1076 | msg_set_origport(msg, p_ptr->ref); |
b97bf3fd | 1077 | msg_set_type(msg, TIPC_CONN_MSG); |
53b94364 | 1078 | msg_set_lookup_scope(msg, 0); |
08c80e9a | 1079 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
1080 | |
1081 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1082 | p_ptr->probing_state = CONFIRMED; | |
23dd4cce | 1083 | p_ptr->connected = 1; |
b97bf3fd PL |
1084 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
1085 | ||
0e65967e | 1086 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 1087 | (void *)(unsigned long)ref, |
b97bf3fd | 1088 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 1089 | res = 0; |
b97bf3fd | 1090 | exit: |
4323add6 | 1091 | tipc_port_unlock(p_ptr); |
23dd4cce | 1092 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1093 | return res; |
1094 | } | |
1095 | ||
0c3141e9 AS |
1096 | /** |
1097 | * tipc_disconnect_port - disconnect port from peer | |
1098 | * | |
1099 | * Port must be locked. | |
1100 | */ | |
1101 | ||
1102 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1103 | { | |
1104 | int res; | |
1105 | ||
1106 | if (tp_ptr->connected) { | |
1107 | tp_ptr->connected = 0; | |
1108 | /* let timer expire on it's own to avoid deadlock! */ | |
1109 | tipc_nodesub_unsubscribe( | |
23dd4cce | 1110 | &((struct tipc_port *)tp_ptr)->subscription); |
0e35fd5e | 1111 | res = 0; |
0c3141e9 AS |
1112 | } else { |
1113 | res = -ENOTCONN; | |
1114 | } | |
1115 | return res; | |
1116 | } | |
1117 | ||
b97bf3fd PL |
1118 | /* |
1119 | * tipc_disconnect(): Disconnect port form peer. | |
1120 | * This is a node local operation. | |
1121 | */ | |
1122 | ||
1123 | int tipc_disconnect(u32 ref) | |
1124 | { | |
23dd4cce | 1125 | struct tipc_port *p_ptr; |
0c3141e9 | 1126 | int res; |
b97bf3fd | 1127 | |
4323add6 | 1128 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1129 | if (!p_ptr) |
1130 | return -EINVAL; | |
0c3141e9 | 1131 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1132 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1133 | return res; |
1134 | } | |
1135 | ||
1136 | /* | |
1137 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1138 | */ | |
1139 | int tipc_shutdown(u32 ref) | |
1140 | { | |
23dd4cce | 1141 | struct tipc_port *p_ptr; |
1fc54d8f | 1142 | struct sk_buff *buf = NULL; |
b97bf3fd | 1143 | |
4323add6 | 1144 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1145 | if (!p_ptr) |
1146 | return -EINVAL; | |
1147 | ||
23dd4cce AS |
1148 | if (p_ptr->connected) { |
1149 | u32 imp = msg_importance(&p_ptr->phdr); | |
b97bf3fd PL |
1150 | if (imp < TIPC_CRITICAL_IMPORTANCE) |
1151 | imp++; | |
1152 | buf = port_build_proto_msg(port_peerport(p_ptr), | |
1153 | port_peernode(p_ptr), | |
1154 | ref, | |
1155 | tipc_own_addr, | |
1156 | imp, | |
1157 | TIPC_CONN_MSG, | |
c4307285 | 1158 | TIPC_CONN_SHUTDOWN, |
b97bf3fd PL |
1159 | 0); |
1160 | } | |
4323add6 PL |
1161 | tipc_port_unlock(p_ptr); |
1162 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1163 | return tipc_disconnect(ref); |
1164 | } | |
1165 | ||
b97bf3fd | 1166 | /* |
4323add6 | 1167 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1168 | * message for this node. |
1169 | */ | |
1170 | ||
23dd4cce | 1171 | static int tipc_port_recv_sections(struct tipc_port *sender, unsigned int num_sect, |
26896904 AS |
1172 | struct iovec const *msg_sect, |
1173 | unsigned int total_len) | |
b97bf3fd PL |
1174 | { |
1175 | struct sk_buff *buf; | |
1176 | int res; | |
c4307285 | 1177 | |
26896904 | 1178 | res = tipc_msg_build(&sender->phdr, msg_sect, num_sect, total_len, |
b97bf3fd PL |
1179 | MAX_MSG_SIZE, !sender->user_port, &buf); |
1180 | if (likely(buf)) | |
4323add6 | 1181 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1182 | return res; |
1183 | } | |
1184 | ||
1185 | /** | |
1186 | * tipc_send - send message sections on connection | |
1187 | */ | |
1188 | ||
26896904 AS |
1189 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect, |
1190 | unsigned int total_len) | |
b97bf3fd | 1191 | { |
23dd4cce | 1192 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1193 | u32 destnode; |
1194 | int res; | |
1195 | ||
4323add6 | 1196 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1197 | if (!p_ptr || !p_ptr->connected) |
b97bf3fd PL |
1198 | return -EINVAL; |
1199 | ||
23dd4cce | 1200 | p_ptr->congested = 1; |
4323add6 | 1201 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1202 | destnode = port_peernode(p_ptr); |
1203 | if (likely(destnode != tipc_own_addr)) | |
4323add6 | 1204 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
26896904 | 1205 | total_len, destnode); |
b97bf3fd | 1206 | else |
26896904 AS |
1207 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, |
1208 | total_len); | |
b97bf3fd PL |
1209 | |
1210 | if (likely(res != -ELINKCONG)) { | |
23dd4cce | 1211 | p_ptr->congested = 0; |
cb7ce914 AS |
1212 | if (res > 0) |
1213 | p_ptr->sent++; | |
b97bf3fd PL |
1214 | return res; |
1215 | } | |
1216 | } | |
1217 | if (port_unreliable(p_ptr)) { | |
23dd4cce | 1218 | p_ptr->congested = 0; |
26896904 | 1219 | return total_len; |
b97bf3fd PL |
1220 | } |
1221 | return -ELINKCONG; | |
1222 | } | |
1223 | ||
b97bf3fd | 1224 | /** |
12bae479 | 1225 | * tipc_send2name - send message sections to port name |
b97bf3fd PL |
1226 | */ |
1227 | ||
12bae479 | 1228 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
26896904 AS |
1229 | unsigned int num_sect, struct iovec const *msg_sect, |
1230 | unsigned int total_len) | |
b97bf3fd | 1231 | { |
23dd4cce | 1232 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1233 | struct tipc_msg *msg; |
1234 | u32 destnode = domain; | |
9ccc2eb4 | 1235 | u32 destport; |
b97bf3fd PL |
1236 | int res; |
1237 | ||
4323add6 | 1238 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1239 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1240 | return -EINVAL; |
1241 | ||
23dd4cce | 1242 | msg = &p_ptr->phdr; |
b97bf3fd | 1243 | msg_set_type(msg, TIPC_NAMED_MSG); |
12bae479 AS |
1244 | msg_set_orignode(msg, tipc_own_addr); |
1245 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1246 | msg_set_hdr_sz(msg, LONG_H_SIZE); |
1247 | msg_set_nametype(msg, name->type); | |
1248 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 1249 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 1250 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1251 | msg_set_destnode(msg, destnode); |
1252 | msg_set_destport(msg, destport); | |
1253 | ||
5d9c54c1 | 1254 | if (likely(destport)) { |
b97bf3fd | 1255 | if (likely(destnode == tipc_own_addr)) |
cb7ce914 | 1256 | res = tipc_port_recv_sections(p_ptr, num_sect, |
26896904 | 1257 | msg_sect, total_len); |
cb7ce914 AS |
1258 | else |
1259 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, | |
26896904 AS |
1260 | num_sect, total_len, |
1261 | destnode); | |
cb7ce914 AS |
1262 | if (likely(res != -ELINKCONG)) { |
1263 | if (res > 0) | |
1264 | p_ptr->sent++; | |
b97bf3fd | 1265 | return res; |
cb7ce914 | 1266 | } |
b97bf3fd | 1267 | if (port_unreliable(p_ptr)) { |
26896904 | 1268 | return total_len; |
b97bf3fd PL |
1269 | } |
1270 | return -ELINKCONG; | |
1271 | } | |
c4307285 | 1272 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
26896904 | 1273 | total_len, TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1274 | } |
1275 | ||
1276 | /** | |
12bae479 | 1277 | * tipc_send2port - send message sections to port identity |
b97bf3fd PL |
1278 | */ |
1279 | ||
12bae479 | 1280 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
26896904 AS |
1281 | unsigned int num_sect, struct iovec const *msg_sect, |
1282 | unsigned int total_len) | |
b97bf3fd | 1283 | { |
23dd4cce | 1284 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1285 | struct tipc_msg *msg; |
1286 | int res; | |
1287 | ||
4323add6 | 1288 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1289 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1290 | return -EINVAL; |
1291 | ||
23dd4cce | 1292 | msg = &p_ptr->phdr; |
b97bf3fd | 1293 | msg_set_type(msg, TIPC_DIRECT_MSG); |
53b94364 | 1294 | msg_set_lookup_scope(msg, 0); |
12bae479 AS |
1295 | msg_set_orignode(msg, tipc_own_addr); |
1296 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1297 | msg_set_destnode(msg, dest->node); |
1298 | msg_set_destport(msg, dest->ref); | |
1299 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
cb7ce914 | 1300 | |
b97bf3fd | 1301 | if (dest->node == tipc_own_addr) |
26896904 AS |
1302 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, |
1303 | total_len); | |
cb7ce914 AS |
1304 | else |
1305 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, | |
26896904 | 1306 | total_len, dest->node); |
cb7ce914 AS |
1307 | if (likely(res != -ELINKCONG)) { |
1308 | if (res > 0) | |
1309 | p_ptr->sent++; | |
b97bf3fd | 1310 | return res; |
cb7ce914 | 1311 | } |
b97bf3fd | 1312 | if (port_unreliable(p_ptr)) { |
26896904 | 1313 | return total_len; |
b97bf3fd PL |
1314 | } |
1315 | return -ELINKCONG; | |
1316 | } | |
1317 | ||
c4307285 | 1318 | /** |
12bae479 | 1319 | * tipc_send_buf2port - send message buffer to port identity |
b97bf3fd PL |
1320 | */ |
1321 | ||
12bae479 AS |
1322 | int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest, |
1323 | struct sk_buff *buf, unsigned int dsz) | |
b97bf3fd | 1324 | { |
23dd4cce | 1325 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1326 | struct tipc_msg *msg; |
1327 | int res; | |
1328 | ||
23dd4cce AS |
1329 | p_ptr = (struct tipc_port *)tipc_ref_deref(ref); |
1330 | if (!p_ptr || p_ptr->connected) | |
b97bf3fd PL |
1331 | return -EINVAL; |
1332 | ||
23dd4cce | 1333 | msg = &p_ptr->phdr; |
b97bf3fd | 1334 | msg_set_type(msg, TIPC_DIRECT_MSG); |
12bae479 AS |
1335 | msg_set_orignode(msg, tipc_own_addr); |
1336 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1337 | msg_set_destnode(msg, dest->node); |
1338 | msg_set_destport(msg, dest->ref); | |
1339 | msg_set_hdr_sz(msg, DIR_MSG_H_SIZE); | |
b97bf3fd PL |
1340 | msg_set_size(msg, DIR_MSG_H_SIZE + dsz); |
1341 | if (skb_cow(buf, DIR_MSG_H_SIZE)) | |
1342 | return -ENOMEM; | |
1343 | ||
1344 | skb_push(buf, DIR_MSG_H_SIZE); | |
27d7ff46 | 1345 | skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE); |
cb7ce914 | 1346 | |
b97bf3fd | 1347 | if (dest->node == tipc_own_addr) |
cb7ce914 AS |
1348 | res = tipc_port_recv_msg(buf); |
1349 | else | |
1350 | res = tipc_send_buf_fast(buf, dest->node); | |
1351 | if (likely(res != -ELINKCONG)) { | |
1352 | if (res > 0) | |
1353 | p_ptr->sent++; | |
b97bf3fd | 1354 | return res; |
cb7ce914 | 1355 | } |
b97bf3fd PL |
1356 | if (port_unreliable(p_ptr)) |
1357 | return dsz; | |
1358 | return -ELINKCONG; | |
1359 | } | |
1360 |