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; | |
4584310b | 83 | struct tipc_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); |
5f6d9123 | 119 | kfree_skb(buf); |
b97bf3fd PL |
120 | return -ENOMEM; |
121 | } | |
122 | } | |
4323add6 | 123 | res = tipc_bclink_send_msg(buf); |
a016892c | 124 | if ((res < 0) && (dports.count != 0)) |
5f6d9123 | 125 | kfree_skb(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 | ||
4584310b | 145 | void tipc_port_recv_mcast(struct sk_buff *buf, struct tipc_port_list *dp) |
b97bf3fd | 146 | { |
0e65967e | 147 | struct tipc_msg *msg; |
4584310b PG |
148 | struct tipc_port_list dports = {0, NULL, }; |
149 | struct tipc_port_list *item = dp; | |
b97bf3fd PL |
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: | |
5f6d9123 | 190 | kfree_skb(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; | |
741d9eb7 | 225 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_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 | 329 | /* |
e4a0aee4 AS |
330 | * port_build_proto_msg(): create connection protocol message for port |
331 | * | |
332 | * On entry the port must be locked and connected. | |
b97bf3fd | 333 | */ |
e4a0aee4 AS |
334 | static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr, |
335 | u32 type, u32 ack) | |
b97bf3fd PL |
336 | { |
337 | struct sk_buff *buf; | |
338 | struct tipc_msg *msg; | |
c4307285 | 339 | |
741d9eb7 | 340 | buf = tipc_buf_acquire(INT_H_SIZE); |
b97bf3fd PL |
341 | if (buf) { |
342 | msg = buf_msg(buf); | |
e4a0aee4 AS |
343 | tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE, |
344 | port_peernode(p_ptr)); | |
345 | msg_set_destport(msg, port_peerport(p_ptr)); | |
346 | msg_set_origport(msg, p_ptr->ref); | |
b97bf3fd | 347 | msg_set_msgcnt(msg, ack); |
b97bf3fd PL |
348 | } |
349 | return buf; | |
350 | } | |
351 | ||
b97bf3fd PL |
352 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
353 | { | |
354 | struct tipc_msg *msg = buf_msg(buf); | |
355 | struct sk_buff *rbuf; | |
356 | struct tipc_msg *rmsg; | |
357 | int hdr_sz; | |
7dd1bf28 | 358 | u32 imp; |
b97bf3fd | 359 | u32 data_sz = msg_data_sz(msg); |
017dac31 | 360 | u32 src_node; |
7dd1bf28 | 361 | u32 rmsg_sz; |
b97bf3fd PL |
362 | |
363 | /* discard rejected message if it shouldn't be returned to sender */ | |
76d12527 AS |
364 | |
365 | if (WARN(!msg_isdata(msg), | |
366 | "attempt to reject message with user=%u", msg_user(msg))) { | |
367 | dump_stack(); | |
368 | goto exit; | |
369 | } | |
acc631bf AS |
370 | if (msg_errcode(msg) || msg_dest_droppable(msg)) |
371 | goto exit; | |
b97bf3fd | 372 | |
7dd1bf28 AS |
373 | /* |
374 | * construct returned message by copying rejected message header and | |
375 | * data (or subset), then updating header fields that need adjusting | |
376 | */ | |
377 | ||
378 | hdr_sz = msg_hdr_sz(msg); | |
379 | rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE); | |
380 | ||
381 | rbuf = tipc_buf_acquire(rmsg_sz); | |
acc631bf AS |
382 | if (rbuf == NULL) |
383 | goto exit; | |
384 | ||
b97bf3fd | 385 | rmsg = buf_msg(rbuf); |
7dd1bf28 AS |
386 | skb_copy_to_linear_data(rbuf, msg, rmsg_sz); |
387 | ||
388 | if (msg_connected(rmsg)) { | |
389 | imp = msg_importance(rmsg); | |
390 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
391 | msg_set_importance(rmsg, ++imp); | |
99c14593 | 392 | } |
7dd1bf28 AS |
393 | msg_set_non_seq(rmsg, 0); |
394 | msg_set_size(rmsg, rmsg_sz); | |
395 | msg_set_errcode(rmsg, err); | |
396 | msg_set_prevnode(rmsg, tipc_own_addr); | |
397 | msg_swap_words(rmsg, 4, 5); | |
398 | if (!msg_short(rmsg)) | |
399 | msg_swap_words(rmsg, 6, 7); | |
b97bf3fd PL |
400 | |
401 | /* send self-abort message when rejecting on a connected port */ | |
402 | if (msg_connected(msg)) { | |
23dd4cce | 403 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
404 | |
405 | if (p_ptr) { | |
dff10e9e AS |
406 | struct sk_buff *abuf = NULL; |
407 | ||
23dd4cce | 408 | if (p_ptr->connected) |
b97bf3fd | 409 | abuf = port_build_self_abort_msg(p_ptr, err); |
4323add6 | 410 | tipc_port_unlock(p_ptr); |
dff10e9e | 411 | tipc_net_route_msg(abuf); |
b97bf3fd | 412 | } |
b97bf3fd PL |
413 | } |
414 | ||
acc631bf AS |
415 | /* send returned message & dispose of rejected message */ |
416 | ||
017dac31 AS |
417 | src_node = msg_prevnode(msg); |
418 | if (src_node == tipc_own_addr) | |
419 | tipc_port_recv_msg(rbuf); | |
420 | else | |
421 | tipc_link_send(rbuf, src_node, msg_link_selector(rmsg)); | |
acc631bf | 422 | exit: |
5f6d9123 | 423 | kfree_skb(buf); |
b97bf3fd PL |
424 | return data_sz; |
425 | } | |
426 | ||
23dd4cce | 427 | int tipc_port_reject_sections(struct tipc_port *p_ptr, struct tipc_msg *hdr, |
4323add6 | 428 | struct iovec const *msg_sect, u32 num_sect, |
26896904 | 429 | unsigned int total_len, int err) |
b97bf3fd PL |
430 | { |
431 | struct sk_buff *buf; | |
432 | int res; | |
433 | ||
26896904 | 434 | res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE, |
b97bf3fd PL |
435 | !p_ptr->user_port, &buf); |
436 | if (!buf) | |
437 | return res; | |
438 | ||
439 | return tipc_reject_msg(buf, err); | |
440 | } | |
441 | ||
442 | static void port_timeout(unsigned long ref) | |
443 | { | |
23dd4cce | 444 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 445 | struct sk_buff *buf = NULL; |
b97bf3fd | 446 | |
065fd177 AS |
447 | if (!p_ptr) |
448 | return; | |
449 | ||
23dd4cce | 450 | if (!p_ptr->connected) { |
065fd177 | 451 | tipc_port_unlock(p_ptr); |
b97bf3fd | 452 | return; |
065fd177 | 453 | } |
b97bf3fd PL |
454 | |
455 | /* Last probe answered ? */ | |
456 | if (p_ptr->probing_state == PROBING) { | |
457 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
458 | } else { | |
e4a0aee4 | 459 | buf = port_build_proto_msg(p_ptr, CONN_PROBE, 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 | { |
e244a915 | 483 | struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err); |
b97bf3fd | 484 | |
e244a915 AS |
485 | if (buf) { |
486 | struct tipc_msg *msg = buf_msg(buf); | |
487 | msg_swap_words(msg, 4, 5); | |
488 | msg_swap_words(msg, 6, 7); | |
489 | } | |
490 | return buf; | |
b97bf3fd PL |
491 | } |
492 | ||
493 | ||
23dd4cce | 494 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 495 | { |
e244a915 AS |
496 | struct sk_buff *buf; |
497 | struct tipc_msg *msg; | |
498 | u32 imp; | |
b97bf3fd | 499 | |
23dd4cce | 500 | if (!p_ptr->connected) |
1fc54d8f | 501 | return NULL; |
e244a915 AS |
502 | |
503 | buf = tipc_buf_acquire(BASIC_H_SIZE); | |
504 | if (buf) { | |
505 | msg = buf_msg(buf); | |
506 | memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE); | |
507 | msg_set_hdr_sz(msg, BASIC_H_SIZE); | |
508 | msg_set_size(msg, BASIC_H_SIZE); | |
509 | imp = msg_importance(msg); | |
510 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
511 | msg_set_importance(msg, ++imp); | |
512 | msg_set_errcode(msg, err); | |
513 | } | |
514 | return buf; | |
b97bf3fd PL |
515 | } |
516 | ||
4323add6 | 517 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
518 | { |
519 | struct tipc_msg *msg = buf_msg(buf); | |
1c1a551a | 520 | struct tipc_port *p_ptr; |
1fc54d8f | 521 | struct sk_buff *r_buf = NULL; |
1c1a551a AS |
522 | u32 orignode = msg_orignode(msg); |
523 | u32 origport = msg_origport(msg); | |
524 | u32 destport = msg_destport(msg); | |
525 | int wakeable; | |
526 | ||
527 | /* Validate connection */ | |
528 | ||
529 | p_ptr = tipc_port_lock(destport); | |
530 | if (!p_ptr || !p_ptr->connected || | |
531 | (port_peernode(p_ptr) != orignode) || | |
532 | (port_peerport(p_ptr) != origport)) { | |
f55b5640 AS |
533 | r_buf = tipc_buf_acquire(BASIC_H_SIZE); |
534 | if (r_buf) { | |
535 | msg = buf_msg(r_buf); | |
536 | tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG, | |
537 | BASIC_H_SIZE, orignode); | |
538 | msg_set_errcode(msg, TIPC_ERR_NO_PORT); | |
539 | msg_set_origport(msg, destport); | |
540 | msg_set_destport(msg, origport); | |
541 | } | |
1c1a551a AS |
542 | if (p_ptr) |
543 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
544 | goto exit; |
545 | } | |
546 | ||
1c1a551a AS |
547 | /* Process protocol message sent by peer */ |
548 | ||
549 | switch (msg_type(msg)) { | |
550 | case CONN_ACK: | |
551 | wakeable = tipc_port_congested(p_ptr) && p_ptr->congested && | |
552 | p_ptr->wakeup; | |
553 | p_ptr->acked += msg_msgcnt(msg); | |
554 | if (!tipc_port_congested(p_ptr)) { | |
555 | p_ptr->congested = 0; | |
556 | if (wakeable) | |
557 | p_ptr->wakeup(p_ptr); | |
558 | } | |
559 | break; | |
560 | case CONN_PROBE: | |
e4a0aee4 | 561 | r_buf = port_build_proto_msg(p_ptr, CONN_PROBE_REPLY, 0); |
1c1a551a AS |
562 | break; |
563 | default: | |
564 | /* CONN_PROBE_REPLY or unrecognized - no action required */ | |
565 | break; | |
b97bf3fd PL |
566 | } |
567 | p_ptr->probing_state = CONFIRMED; | |
1c1a551a | 568 | tipc_port_unlock(p_ptr); |
b97bf3fd | 569 | exit: |
4323add6 | 570 | tipc_net_route_msg(r_buf); |
5f6d9123 | 571 | kfree_skb(buf); |
b97bf3fd PL |
572 | } |
573 | ||
23dd4cce | 574 | static void port_print(struct tipc_port *p_ptr, struct print_buf *buf, int full_id) |
b97bf3fd | 575 | { |
c4307285 | 576 | struct publication *publ; |
b97bf3fd PL |
577 | |
578 | if (full_id) | |
c4307285 | 579 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 580 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
23dd4cce | 581 | tipc_node(tipc_own_addr), p_ptr->ref); |
b97bf3fd | 582 | else |
23dd4cce | 583 | tipc_printf(buf, "%-10u:", p_ptr->ref); |
b97bf3fd | 584 | |
23dd4cce | 585 | if (p_ptr->connected) { |
c4307285 YH |
586 | u32 dport = port_peerport(p_ptr); |
587 | u32 destnode = port_peernode(p_ptr); | |
588 | ||
589 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
590 | tipc_zone(destnode), tipc_cluster(destnode), | |
591 | tipc_node(destnode), dport); | |
23dd4cce | 592 | if (p_ptr->conn_type != 0) |
c4307285 | 593 | tipc_printf(buf, " via {%u,%u}", |
23dd4cce AS |
594 | p_ptr->conn_type, |
595 | p_ptr->conn_instance); | |
596 | } else if (p_ptr->published) { | |
c4307285 YH |
597 | tipc_printf(buf, " bound to"); |
598 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
599 | if (publ->lower == publ->upper) |
600 | tipc_printf(buf, " {%u,%u}", publ->type, | |
601 | publ->lower); | |
602 | else | |
c4307285 | 603 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 604 | publ->lower, publ->upper); |
c4307285 YH |
605 | } |
606 | } | |
607 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
608 | } |
609 | ||
610 | #define MAX_PORT_QUERY 32768 | |
611 | ||
4323add6 | 612 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
613 | { |
614 | struct sk_buff *buf; | |
615 | struct tlv_desc *rep_tlv; | |
616 | struct print_buf pb; | |
23dd4cce | 617 | struct tipc_port *p_ptr; |
b97bf3fd PL |
618 | int str_len; |
619 | ||
4323add6 | 620 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
621 | if (!buf) |
622 | return NULL; | |
623 | rep_tlv = (struct tlv_desc *)buf->data; | |
624 | ||
4323add6 PL |
625 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
626 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd | 627 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 628 | spin_lock_bh(p_ptr->lock); |
b97bf3fd | 629 | port_print(p_ptr, &pb, 0); |
23dd4cce | 630 | spin_unlock_bh(p_ptr->lock); |
b97bf3fd | 631 | } |
4323add6 PL |
632 | spin_unlock_bh(&tipc_port_list_lock); |
633 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
634 | |
635 | skb_put(buf, TLV_SPACE(str_len)); | |
636 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
637 | ||
638 | return buf; | |
639 | } | |
640 | ||
4323add6 | 641 | void tipc_port_reinit(void) |
b97bf3fd | 642 | { |
23dd4cce | 643 | struct tipc_port *p_ptr; |
b97bf3fd PL |
644 | struct tipc_msg *msg; |
645 | ||
4323add6 | 646 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 647 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 648 | msg = &p_ptr->phdr; |
b97bf3fd PL |
649 | if (msg_orignode(msg) == tipc_own_addr) |
650 | break; | |
6d4a6672 | 651 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
652 | msg_set_orignode(msg, tipc_own_addr); |
653 | } | |
4323add6 | 654 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
655 | } |
656 | ||
657 | ||
658 | /* | |
659 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
660 | * to the tipc_port interface. | |
661 | */ | |
662 | ||
663 | static void port_dispatcher_sigh(void *dummy) | |
664 | { | |
665 | struct sk_buff *buf; | |
666 | ||
667 | spin_lock_bh(&queue_lock); | |
668 | buf = msg_queue_head; | |
1fc54d8f | 669 | msg_queue_head = NULL; |
b97bf3fd PL |
670 | spin_unlock_bh(&queue_lock); |
671 | ||
672 | while (buf) { | |
23dd4cce | 673 | struct tipc_port *p_ptr; |
b97bf3fd PL |
674 | struct user_port *up_ptr; |
675 | struct tipc_portid orig; | |
676 | struct tipc_name_seq dseq; | |
677 | void *usr_handle; | |
678 | int connected; | |
679 | int published; | |
9688243b | 680 | u32 message_type; |
b97bf3fd PL |
681 | |
682 | struct sk_buff *next = buf->next; | |
683 | struct tipc_msg *msg = buf_msg(buf); | |
684 | u32 dref = msg_destport(msg); | |
c4307285 | 685 | |
9688243b AS |
686 | message_type = msg_type(msg); |
687 | if (message_type > TIPC_DIRECT_MSG) | |
688 | goto reject; /* Unsupported message type */ | |
689 | ||
4323add6 | 690 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
691 | if (!p_ptr) |
692 | goto reject; /* Port deleted while msg in queue */ | |
693 | ||
b97bf3fd PL |
694 | orig.ref = msg_origport(msg); |
695 | orig.node = msg_orignode(msg); | |
696 | up_ptr = p_ptr->user_port; | |
697 | usr_handle = up_ptr->usr_handle; | |
23dd4cce AS |
698 | connected = p_ptr->connected; |
699 | published = p_ptr->published; | |
b97bf3fd PL |
700 | |
701 | if (unlikely(msg_errcode(msg))) | |
702 | goto err; | |
703 | ||
9688243b | 704 | switch (message_type) { |
c4307285 | 705 | |
b97bf3fd PL |
706 | case TIPC_CONN_MSG:{ |
707 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
708 | u32 peer_port = port_peerport(p_ptr); | |
709 | u32 peer_node = port_peernode(p_ptr); | |
cb7ce914 | 710 | u32 dsz; |
b97bf3fd | 711 | |
4cec72c8 | 712 | tipc_port_unlock(p_ptr); |
5307e469 AS |
713 | if (unlikely(!cb)) |
714 | goto reject; | |
b97bf3fd | 715 | if (unlikely(!connected)) { |
84b07c16 | 716 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 717 | goto reject; |
84b07c16 AS |
718 | } else if ((msg_origport(msg) != peer_port) || |
719 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd | 720 | goto reject; |
cb7ce914 AS |
721 | dsz = msg_data_sz(msg); |
722 | if (unlikely(dsz && | |
723 | (++p_ptr->conn_unacked >= | |
724 | TIPC_FLOW_CONTROL_WIN))) | |
c4307285 | 725 | tipc_acknowledge(dref, |
23dd4cce | 726 | p_ptr->conn_unacked); |
b97bf3fd | 727 | skb_pull(buf, msg_hdr_sz(msg)); |
cb7ce914 | 728 | cb(usr_handle, dref, &buf, msg_data(msg), dsz); |
b97bf3fd PL |
729 | break; |
730 | } | |
731 | case TIPC_DIRECT_MSG:{ | |
732 | tipc_msg_event cb = up_ptr->msg_cb; | |
733 | ||
4cec72c8 | 734 | tipc_port_unlock(p_ptr); |
5307e469 | 735 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
736 | goto reject; |
737 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 738 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
739 | msg_data_sz(msg), msg_importance(msg), |
740 | &orig); | |
741 | break; | |
742 | } | |
9688243b | 743 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
744 | case TIPC_NAMED_MSG:{ |
745 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
746 | ||
4cec72c8 | 747 | tipc_port_unlock(p_ptr); |
5307e469 | 748 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
749 | goto reject; |
750 | dseq.type = msg_nametype(msg); | |
751 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
752 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
753 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 754 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 755 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
756 | msg_data_sz(msg), msg_importance(msg), |
757 | &orig, &dseq); | |
758 | break; | |
759 | } | |
760 | } | |
761 | if (buf) | |
5f6d9123 | 762 | kfree_skb(buf); |
b97bf3fd PL |
763 | buf = next; |
764 | continue; | |
765 | err: | |
9688243b | 766 | switch (message_type) { |
c4307285 | 767 | |
b97bf3fd | 768 | case TIPC_CONN_MSG:{ |
c4307285 | 769 | tipc_conn_shutdown_event cb = |
b97bf3fd PL |
770 | up_ptr->conn_err_cb; |
771 | u32 peer_port = port_peerport(p_ptr); | |
772 | u32 peer_node = port_peernode(p_ptr); | |
773 | ||
4cec72c8 | 774 | tipc_port_unlock(p_ptr); |
5307e469 | 775 | if (!cb || !connected) |
b97bf3fd | 776 | break; |
5307e469 AS |
777 | if ((msg_origport(msg) != peer_port) || |
778 | (msg_orignode(msg) != peer_node)) | |
b97bf3fd PL |
779 | break; |
780 | tipc_disconnect(dref); | |
781 | skb_pull(buf, msg_hdr_sz(msg)); | |
782 | cb(usr_handle, dref, &buf, msg_data(msg), | |
783 | msg_data_sz(msg), msg_errcode(msg)); | |
784 | break; | |
785 | } | |
786 | case TIPC_DIRECT_MSG:{ | |
787 | tipc_msg_err_event cb = up_ptr->err_cb; | |
788 | ||
4cec72c8 | 789 | tipc_port_unlock(p_ptr); |
5307e469 | 790 | if (!cb || connected) |
b97bf3fd PL |
791 | break; |
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), &orig); | |
795 | break; | |
796 | } | |
9688243b | 797 | case TIPC_MCAST_MSG: |
b97bf3fd | 798 | case TIPC_NAMED_MSG:{ |
c4307285 | 799 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
800 | up_ptr->named_err_cb; |
801 | ||
4cec72c8 | 802 | tipc_port_unlock(p_ptr); |
5307e469 | 803 | if (!cb || connected) |
b97bf3fd PL |
804 | break; |
805 | dseq.type = msg_nametype(msg); | |
806 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
807 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
808 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 809 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 810 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
811 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
812 | break; | |
813 | } | |
814 | } | |
815 | if (buf) | |
5f6d9123 | 816 | kfree_skb(buf); |
b97bf3fd PL |
817 | buf = next; |
818 | continue; | |
819 | reject: | |
820 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
821 | buf = next; | |
822 | } | |
823 | } | |
824 | ||
825 | /* | |
826 | * port_dispatcher(): Dispatcher for messages destinated | |
827 | * to the tipc_port interface. Called with port locked. | |
828 | */ | |
829 | ||
830 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
831 | { | |
832 | buf->next = NULL; | |
833 | spin_lock_bh(&queue_lock); | |
834 | if (msg_queue_head) { | |
835 | msg_queue_tail->next = buf; | |
836 | msg_queue_tail = buf; | |
837 | } else { | |
838 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 839 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
840 | } |
841 | spin_unlock_bh(&queue_lock); | |
0e35fd5e | 842 | return 0; |
b97bf3fd PL |
843 | } |
844 | ||
c4307285 | 845 | /* |
b97bf3fd | 846 | * Wake up port after congestion: Called with port locked, |
c4307285 | 847 | * |
b97bf3fd PL |
848 | */ |
849 | ||
850 | static void port_wakeup_sh(unsigned long ref) | |
851 | { | |
23dd4cce | 852 | struct tipc_port *p_ptr; |
b97bf3fd | 853 | struct user_port *up_ptr; |
1fc54d8f SR |
854 | tipc_continue_event cb = NULL; |
855 | void *uh = NULL; | |
b97bf3fd | 856 | |
4323add6 | 857 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
858 | if (p_ptr) { |
859 | up_ptr = p_ptr->user_port; | |
860 | if (up_ptr) { | |
861 | cb = up_ptr->continue_event_cb; | |
862 | uh = up_ptr->usr_handle; | |
863 | } | |
4323add6 | 864 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
865 | } |
866 | if (cb) | |
867 | cb(uh, ref); | |
868 | } | |
869 | ||
870 | ||
871 | static void port_wakeup(struct tipc_port *p_ptr) | |
872 | { | |
4323add6 | 873 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
874 | } |
875 | ||
876 | void tipc_acknowledge(u32 ref, u32 ack) | |
877 | { | |
23dd4cce | 878 | struct tipc_port *p_ptr; |
1fc54d8f | 879 | struct sk_buff *buf = NULL; |
b97bf3fd | 880 | |
4323add6 | 881 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
882 | if (!p_ptr) |
883 | return; | |
23dd4cce AS |
884 | if (p_ptr->connected) { |
885 | p_ptr->conn_unacked -= ack; | |
e4a0aee4 | 886 | buf = port_build_proto_msg(p_ptr, CONN_ACK, ack); |
b97bf3fd | 887 | } |
4323add6 PL |
888 | tipc_port_unlock(p_ptr); |
889 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
890 | } |
891 | ||
892 | /* | |
b0c1e928 | 893 | * tipc_createport(): user level call. |
b97bf3fd PL |
894 | */ |
895 | ||
b0c1e928 | 896 | int tipc_createport(void *usr_handle, |
c4307285 YH |
897 | unsigned int importance, |
898 | tipc_msg_err_event error_cb, | |
899 | tipc_named_msg_err_event named_error_cb, | |
900 | tipc_conn_shutdown_event conn_error_cb, | |
901 | tipc_msg_event msg_cb, | |
902 | tipc_named_msg_event named_msg_cb, | |
903 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
904 | tipc_continue_event continue_event_cb,/* May be zero */ |
905 | u32 *portref) | |
906 | { | |
907 | struct user_port *up_ptr; | |
23dd4cce | 908 | struct tipc_port *p_ptr; |
b97bf3fd | 909 | |
0da974f4 | 910 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 911 | if (!up_ptr) { |
a75bf874 | 912 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
913 | return -ENOMEM; |
914 | } | |
23dd4cce | 915 | p_ptr = (struct tipc_port *)tipc_createport_raw(NULL, port_dispatcher, |
0ea52241 AS |
916 | port_wakeup, importance); |
917 | if (!p_ptr) { | |
b97bf3fd PL |
918 | kfree(up_ptr); |
919 | return -ENOMEM; | |
920 | } | |
921 | ||
922 | p_ptr->user_port = up_ptr; | |
b97bf3fd | 923 | up_ptr->usr_handle = usr_handle; |
23dd4cce | 924 | up_ptr->ref = p_ptr->ref; |
b97bf3fd PL |
925 | up_ptr->err_cb = error_cb; |
926 | up_ptr->named_err_cb = named_error_cb; | |
927 | up_ptr->conn_err_cb = conn_error_cb; | |
928 | up_ptr->msg_cb = msg_cb; | |
929 | up_ptr->named_msg_cb = named_msg_cb; | |
930 | up_ptr->conn_msg_cb = conn_msg_cb; | |
931 | up_ptr->continue_event_cb = continue_event_cb; | |
23dd4cce | 932 | *portref = p_ptr->ref; |
4323add6 | 933 | tipc_port_unlock(p_ptr); |
0e35fd5e | 934 | return 0; |
b97bf3fd PL |
935 | } |
936 | ||
b97bf3fd PL |
937 | int tipc_portimportance(u32 ref, unsigned int *importance) |
938 | { | |
23dd4cce | 939 | struct tipc_port *p_ptr; |
c4307285 | 940 | |
4323add6 | 941 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
942 | if (!p_ptr) |
943 | return -EINVAL; | |
23dd4cce | 944 | *importance = (unsigned int)msg_importance(&p_ptr->phdr); |
4cec72c8 | 945 | tipc_port_unlock(p_ptr); |
0e35fd5e | 946 | return 0; |
b97bf3fd PL |
947 | } |
948 | ||
949 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
950 | { | |
23dd4cce | 951 | struct tipc_port *p_ptr; |
b97bf3fd PL |
952 | |
953 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
954 | return -EINVAL; | |
955 | ||
4323add6 | 956 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
957 | if (!p_ptr) |
958 | return -EINVAL; | |
23dd4cce | 959 | msg_set_importance(&p_ptr->phdr, (u32)imp); |
4cec72c8 | 960 | tipc_port_unlock(p_ptr); |
0e35fd5e | 961 | return 0; |
b97bf3fd PL |
962 | } |
963 | ||
964 | ||
965 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
966 | { | |
23dd4cce | 967 | struct tipc_port *p_ptr; |
b97bf3fd PL |
968 | struct publication *publ; |
969 | u32 key; | |
970 | int res = -EINVAL; | |
971 | ||
4323add6 | 972 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
973 | if (!p_ptr) |
974 | return -EINVAL; | |
975 | ||
23dd4cce | 976 | if (p_ptr->connected) |
b97bf3fd PL |
977 | goto exit; |
978 | if (seq->lower > seq->upper) | |
979 | goto exit; | |
980 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
981 | goto exit; | |
982 | key = ref + p_ptr->pub_count + 1; | |
983 | if (key == ref) { | |
984 | res = -EADDRINUSE; | |
985 | goto exit; | |
986 | } | |
4323add6 | 987 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
23dd4cce | 988 | scope, p_ptr->ref, key); |
b97bf3fd PL |
989 | if (publ) { |
990 | list_add(&publ->pport_list, &p_ptr->publications); | |
991 | p_ptr->pub_count++; | |
23dd4cce | 992 | p_ptr->published = 1; |
0e35fd5e | 993 | res = 0; |
b97bf3fd PL |
994 | } |
995 | exit: | |
4323add6 | 996 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
997 | return res; |
998 | } | |
999 | ||
1000 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1001 | { | |
23dd4cce | 1002 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1003 | struct publication *publ; |
1004 | struct publication *tpubl; | |
1005 | int res = -EINVAL; | |
c4307285 | 1006 | |
4323add6 | 1007 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1008 | if (!p_ptr) |
1009 | return -EINVAL; | |
b97bf3fd | 1010 | if (!seq) { |
c4307285 | 1011 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1012 | &p_ptr->publications, pport_list) { |
c4307285 | 1013 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1014 | publ->ref, publ->key); |
b97bf3fd | 1015 | } |
0e35fd5e | 1016 | res = 0; |
b97bf3fd | 1017 | } else { |
c4307285 | 1018 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1019 | &p_ptr->publications, pport_list) { |
1020 | if (publ->scope != scope) | |
1021 | continue; | |
1022 | if (publ->type != seq->type) | |
1023 | continue; | |
1024 | if (publ->lower != seq->lower) | |
1025 | continue; | |
1026 | if (publ->upper != seq->upper) | |
1027 | break; | |
c4307285 | 1028 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1029 | publ->ref, publ->key); |
0e35fd5e | 1030 | res = 0; |
b97bf3fd PL |
1031 | break; |
1032 | } | |
1033 | } | |
1034 | if (list_empty(&p_ptr->publications)) | |
23dd4cce | 1035 | p_ptr->published = 0; |
4323add6 | 1036 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1037 | return res; |
1038 | } | |
1039 | ||
1040 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1041 | { | |
23dd4cce | 1042 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1043 | struct tipc_msg *msg; |
1044 | int res = -EINVAL; | |
1045 | ||
4323add6 | 1046 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1047 | if (!p_ptr) |
1048 | return -EINVAL; | |
23dd4cce | 1049 | if (p_ptr->published || p_ptr->connected) |
b97bf3fd PL |
1050 | goto exit; |
1051 | if (!peer->ref) | |
1052 | goto exit; | |
1053 | ||
23dd4cce | 1054 | msg = &p_ptr->phdr; |
b97bf3fd PL |
1055 | msg_set_destnode(msg, peer->node); |
1056 | msg_set_destport(msg, peer->ref); | |
1057 | msg_set_orignode(msg, tipc_own_addr); | |
23dd4cce | 1058 | msg_set_origport(msg, p_ptr->ref); |
b97bf3fd | 1059 | msg_set_type(msg, TIPC_CONN_MSG); |
53b94364 | 1060 | msg_set_lookup_scope(msg, 0); |
08c80e9a | 1061 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
1062 | |
1063 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1064 | p_ptr->probing_state = CONFIRMED; | |
23dd4cce | 1065 | p_ptr->connected = 1; |
b97bf3fd PL |
1066 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
1067 | ||
0e65967e | 1068 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 1069 | (void *)(unsigned long)ref, |
b97bf3fd | 1070 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 1071 | res = 0; |
b97bf3fd | 1072 | exit: |
4323add6 | 1073 | tipc_port_unlock(p_ptr); |
23dd4cce | 1074 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1075 | return res; |
1076 | } | |
1077 | ||
0c3141e9 AS |
1078 | /** |
1079 | * tipc_disconnect_port - disconnect port from peer | |
1080 | * | |
1081 | * Port must be locked. | |
1082 | */ | |
1083 | ||
1084 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1085 | { | |
1086 | int res; | |
1087 | ||
1088 | if (tp_ptr->connected) { | |
1089 | tp_ptr->connected = 0; | |
1090 | /* let timer expire on it's own to avoid deadlock! */ | |
1091 | tipc_nodesub_unsubscribe( | |
23dd4cce | 1092 | &((struct tipc_port *)tp_ptr)->subscription); |
0e35fd5e | 1093 | res = 0; |
0c3141e9 AS |
1094 | } else { |
1095 | res = -ENOTCONN; | |
1096 | } | |
1097 | return res; | |
1098 | } | |
1099 | ||
b97bf3fd PL |
1100 | /* |
1101 | * tipc_disconnect(): Disconnect port form peer. | |
1102 | * This is a node local operation. | |
1103 | */ | |
1104 | ||
1105 | int tipc_disconnect(u32 ref) | |
1106 | { | |
23dd4cce | 1107 | struct tipc_port *p_ptr; |
0c3141e9 | 1108 | int res; |
b97bf3fd | 1109 | |
4323add6 | 1110 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1111 | if (!p_ptr) |
1112 | return -EINVAL; | |
0c3141e9 | 1113 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1114 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1115 | return res; |
1116 | } | |
1117 | ||
1118 | /* | |
1119 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1120 | */ | |
1121 | int tipc_shutdown(u32 ref) | |
1122 | { | |
23dd4cce | 1123 | struct tipc_port *p_ptr; |
1fc54d8f | 1124 | struct sk_buff *buf = NULL; |
b97bf3fd | 1125 | |
4323add6 | 1126 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1127 | if (!p_ptr) |
1128 | return -EINVAL; | |
1129 | ||
e244a915 | 1130 | buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN); |
4323add6 PL |
1131 | tipc_port_unlock(p_ptr); |
1132 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1133 | return tipc_disconnect(ref); |
1134 | } | |
1135 | ||
b97bf3fd | 1136 | /* |
4323add6 | 1137 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1138 | * message for this node. |
1139 | */ | |
1140 | ||
23dd4cce | 1141 | static int tipc_port_recv_sections(struct tipc_port *sender, unsigned int num_sect, |
26896904 AS |
1142 | struct iovec const *msg_sect, |
1143 | unsigned int total_len) | |
b97bf3fd PL |
1144 | { |
1145 | struct sk_buff *buf; | |
1146 | int res; | |
c4307285 | 1147 | |
26896904 | 1148 | res = tipc_msg_build(&sender->phdr, msg_sect, num_sect, total_len, |
b97bf3fd PL |
1149 | MAX_MSG_SIZE, !sender->user_port, &buf); |
1150 | if (likely(buf)) | |
4323add6 | 1151 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1152 | return res; |
1153 | } | |
1154 | ||
1155 | /** | |
1156 | * tipc_send - send message sections on connection | |
1157 | */ | |
1158 | ||
26896904 AS |
1159 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect, |
1160 | unsigned int total_len) | |
b97bf3fd | 1161 | { |
23dd4cce | 1162 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1163 | u32 destnode; |
1164 | int res; | |
1165 | ||
4323add6 | 1166 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1167 | if (!p_ptr || !p_ptr->connected) |
b97bf3fd PL |
1168 | return -EINVAL; |
1169 | ||
23dd4cce | 1170 | p_ptr->congested = 1; |
4323add6 | 1171 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd PL |
1172 | destnode = port_peernode(p_ptr); |
1173 | if (likely(destnode != tipc_own_addr)) | |
4323add6 | 1174 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
26896904 | 1175 | total_len, destnode); |
b97bf3fd | 1176 | else |
26896904 AS |
1177 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, |
1178 | total_len); | |
b97bf3fd PL |
1179 | |
1180 | if (likely(res != -ELINKCONG)) { | |
23dd4cce | 1181 | p_ptr->congested = 0; |
cb7ce914 AS |
1182 | if (res > 0) |
1183 | p_ptr->sent++; | |
b97bf3fd PL |
1184 | return res; |
1185 | } | |
1186 | } | |
1187 | if (port_unreliable(p_ptr)) { | |
23dd4cce | 1188 | p_ptr->congested = 0; |
26896904 | 1189 | return total_len; |
b97bf3fd PL |
1190 | } |
1191 | return -ELINKCONG; | |
1192 | } | |
1193 | ||
b97bf3fd | 1194 | /** |
12bae479 | 1195 | * tipc_send2name - send message sections to port name |
b97bf3fd PL |
1196 | */ |
1197 | ||
12bae479 | 1198 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
26896904 AS |
1199 | unsigned int num_sect, struct iovec const *msg_sect, |
1200 | unsigned int total_len) | |
b97bf3fd | 1201 | { |
23dd4cce | 1202 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1203 | struct tipc_msg *msg; |
1204 | u32 destnode = domain; | |
9ccc2eb4 | 1205 | u32 destport; |
b97bf3fd PL |
1206 | int res; |
1207 | ||
4323add6 | 1208 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1209 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1210 | return -EINVAL; |
1211 | ||
23dd4cce | 1212 | msg = &p_ptr->phdr; |
b97bf3fd | 1213 | msg_set_type(msg, TIPC_NAMED_MSG); |
12bae479 AS |
1214 | msg_set_orignode(msg, tipc_own_addr); |
1215 | msg_set_origport(msg, ref); | |
741d9eb7 | 1216 | msg_set_hdr_sz(msg, NAMED_H_SIZE); |
b97bf3fd PL |
1217 | msg_set_nametype(msg, name->type); |
1218 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 1219 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 1220 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1221 | msg_set_destnode(msg, destnode); |
1222 | msg_set_destport(msg, destport); | |
1223 | ||
bc9f8143 | 1224 | if (likely(destport || destnode)) { |
b97bf3fd | 1225 | if (likely(destnode == tipc_own_addr)) |
cb7ce914 | 1226 | res = tipc_port_recv_sections(p_ptr, num_sect, |
26896904 | 1227 | msg_sect, total_len); |
cb7ce914 AS |
1228 | else |
1229 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, | |
26896904 AS |
1230 | num_sect, total_len, |
1231 | destnode); | |
cb7ce914 AS |
1232 | if (likely(res != -ELINKCONG)) { |
1233 | if (res > 0) | |
1234 | p_ptr->sent++; | |
b97bf3fd | 1235 | return res; |
cb7ce914 | 1236 | } |
b97bf3fd | 1237 | if (port_unreliable(p_ptr)) { |
26896904 | 1238 | return total_len; |
b97bf3fd PL |
1239 | } |
1240 | return -ELINKCONG; | |
1241 | } | |
c4307285 | 1242 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
26896904 | 1243 | total_len, TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1244 | } |
1245 | ||
1246 | /** | |
12bae479 | 1247 | * tipc_send2port - send message sections to port identity |
b97bf3fd PL |
1248 | */ |
1249 | ||
12bae479 | 1250 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
26896904 AS |
1251 | unsigned int num_sect, struct iovec const *msg_sect, |
1252 | unsigned int total_len) | |
b97bf3fd | 1253 | { |
23dd4cce | 1254 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1255 | struct tipc_msg *msg; |
1256 | int res; | |
1257 | ||
4323add6 | 1258 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1259 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1260 | return -EINVAL; |
1261 | ||
23dd4cce | 1262 | msg = &p_ptr->phdr; |
b97bf3fd | 1263 | msg_set_type(msg, TIPC_DIRECT_MSG); |
53b94364 | 1264 | msg_set_lookup_scope(msg, 0); |
12bae479 AS |
1265 | msg_set_orignode(msg, tipc_own_addr); |
1266 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1267 | msg_set_destnode(msg, dest->node); |
1268 | msg_set_destport(msg, dest->ref); | |
741d9eb7 | 1269 | msg_set_hdr_sz(msg, BASIC_H_SIZE); |
cb7ce914 | 1270 | |
b97bf3fd | 1271 | if (dest->node == tipc_own_addr) |
26896904 AS |
1272 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, |
1273 | total_len); | |
cb7ce914 AS |
1274 | else |
1275 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, | |
26896904 | 1276 | total_len, dest->node); |
cb7ce914 AS |
1277 | if (likely(res != -ELINKCONG)) { |
1278 | if (res > 0) | |
1279 | p_ptr->sent++; | |
b97bf3fd | 1280 | return res; |
cb7ce914 | 1281 | } |
b97bf3fd | 1282 | if (port_unreliable(p_ptr)) { |
26896904 | 1283 | return total_len; |
b97bf3fd PL |
1284 | } |
1285 | return -ELINKCONG; | |
1286 | } | |
1287 | ||
c4307285 | 1288 | /** |
12bae479 | 1289 | * tipc_send_buf2port - send message buffer to port identity |
b97bf3fd PL |
1290 | */ |
1291 | ||
12bae479 AS |
1292 | int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest, |
1293 | struct sk_buff *buf, unsigned int dsz) | |
b97bf3fd | 1294 | { |
23dd4cce | 1295 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1296 | struct tipc_msg *msg; |
1297 | int res; | |
1298 | ||
23dd4cce AS |
1299 | p_ptr = (struct tipc_port *)tipc_ref_deref(ref); |
1300 | if (!p_ptr || p_ptr->connected) | |
b97bf3fd PL |
1301 | return -EINVAL; |
1302 | ||
23dd4cce | 1303 | msg = &p_ptr->phdr; |
b97bf3fd | 1304 | msg_set_type(msg, TIPC_DIRECT_MSG); |
12bae479 AS |
1305 | msg_set_orignode(msg, tipc_own_addr); |
1306 | msg_set_origport(msg, ref); | |
b97bf3fd PL |
1307 | msg_set_destnode(msg, dest->node); |
1308 | msg_set_destport(msg, dest->ref); | |
741d9eb7 AS |
1309 | msg_set_hdr_sz(msg, BASIC_H_SIZE); |
1310 | msg_set_size(msg, BASIC_H_SIZE + dsz); | |
1311 | if (skb_cow(buf, BASIC_H_SIZE)) | |
b97bf3fd PL |
1312 | return -ENOMEM; |
1313 | ||
741d9eb7 AS |
1314 | skb_push(buf, BASIC_H_SIZE); |
1315 | skb_copy_to_linear_data(buf, msg, BASIC_H_SIZE); | |
cb7ce914 | 1316 | |
b97bf3fd | 1317 | if (dest->node == tipc_own_addr) |
cb7ce914 AS |
1318 | res = tipc_port_recv_msg(buf); |
1319 | else | |
1320 | res = tipc_send_buf_fast(buf, dest->node); | |
1321 | if (likely(res != -ELINKCONG)) { | |
1322 | if (res > 0) | |
1323 | p_ptr->sent++; | |
b97bf3fd | 1324 | return res; |
cb7ce914 | 1325 | } |
b97bf3fd PL |
1326 | if (port_unreliable(p_ptr)) |
1327 | return dsz; | |
1328 | return -ELINKCONG; | |
1329 | } | |
1330 |