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 | ||
d0e17fed | 62 | static inline u32 port_peernode(struct tipc_port *p_ptr) |
b97bf3fd | 63 | { |
23dd4cce | 64 | return msg_destnode(&p_ptr->phdr); |
b97bf3fd PL |
65 | } |
66 | ||
d0e17fed | 67 | static inline u32 port_peerport(struct tipc_port *p_ptr) |
b97bf3fd | 68 | { |
23dd4cce | 69 | return msg_destport(&p_ptr->phdr); |
b97bf3fd PL |
70 | } |
71 | ||
f0712e86 AS |
72 | /* |
73 | * tipc_port_peer_msg - verify message was sent by connected port's peer | |
74 | * | |
75 | * Handles cases where the node's network address has changed from | |
76 | * the default of <0.0.0> to its configured setting. | |
77 | */ | |
78 | ||
79 | int tipc_port_peer_msg(struct tipc_port *p_ptr, struct tipc_msg *msg) | |
80 | { | |
81 | u32 peernode; | |
82 | u32 orignode; | |
83 | ||
84 | if (msg_origport(msg) != port_peerport(p_ptr)) | |
85 | return 0; | |
86 | ||
87 | orignode = msg_orignode(msg); | |
88 | peernode = port_peernode(p_ptr); | |
89 | return (orignode == peernode) || | |
90 | (!orignode && (peernode == tipc_own_addr)) || | |
91 | (!peernode && (orignode == tipc_own_addr)); | |
92 | } | |
93 | ||
b97bf3fd PL |
94 | /** |
95 | * tipc_multicast - send a multicast message to local and remote destinations | |
96 | */ | |
97 | ||
38f232ea | 98 | int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, |
26896904 AS |
99 | u32 num_sect, struct iovec const *msg_sect, |
100 | unsigned int total_len) | |
b97bf3fd PL |
101 | { |
102 | struct tipc_msg *hdr; | |
103 | struct sk_buff *buf; | |
104 | struct sk_buff *ibuf = NULL; | |
4584310b | 105 | struct tipc_port_list dports = {0, NULL, }; |
23dd4cce | 106 | struct tipc_port *oport = tipc_port_deref(ref); |
b97bf3fd PL |
107 | int ext_targets; |
108 | int res; | |
109 | ||
110 | if (unlikely(!oport)) | |
111 | return -EINVAL; | |
112 | ||
113 | /* Create multicast message */ | |
114 | ||
23dd4cce | 115 | hdr = &oport->phdr; |
b97bf3fd | 116 | msg_set_type(hdr, TIPC_MCAST_MSG); |
53b94364 | 117 | msg_set_lookup_scope(hdr, TIPC_CLUSTER_SCOPE); |
7462b9e9 AS |
118 | msg_set_destport(hdr, 0); |
119 | msg_set_destnode(hdr, 0); | |
b97bf3fd PL |
120 | msg_set_nametype(hdr, seq->type); |
121 | msg_set_namelower(hdr, seq->lower); | |
122 | msg_set_nameupper(hdr, seq->upper); | |
123 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | |
26896904 | 124 | res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE, |
b97bf3fd PL |
125 | !oport->user_port, &buf); |
126 | if (unlikely(!buf)) | |
127 | return res; | |
128 | ||
129 | /* Figure out where to send multicast message */ | |
130 | ||
4323add6 PL |
131 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
132 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
133 | |
134 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
135 | |
136 | if (ext_targets) { | |
137 | if (dports.count != 0) { | |
138 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
139 | if (ibuf == NULL) { | |
4323add6 | 140 | tipc_port_list_free(&dports); |
5f6d9123 | 141 | kfree_skb(buf); |
b97bf3fd PL |
142 | return -ENOMEM; |
143 | } | |
144 | } | |
4323add6 | 145 | res = tipc_bclink_send_msg(buf); |
a016892c | 146 | if ((res < 0) && (dports.count != 0)) |
5f6d9123 | 147 | kfree_skb(ibuf); |
b97bf3fd PL |
148 | } else { |
149 | ibuf = buf; | |
150 | } | |
151 | ||
152 | if (res >= 0) { | |
153 | if (ibuf) | |
4323add6 | 154 | tipc_port_recv_mcast(ibuf, &dports); |
b97bf3fd | 155 | } else { |
4323add6 | 156 | tipc_port_list_free(&dports); |
b97bf3fd PL |
157 | } |
158 | return res; | |
159 | } | |
160 | ||
161 | /** | |
4323add6 | 162 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
c4307285 | 163 | * |
b97bf3fd PL |
164 | * If there is no port list, perform a lookup to create one |
165 | */ | |
166 | ||
4584310b | 167 | void tipc_port_recv_mcast(struct sk_buff *buf, struct tipc_port_list *dp) |
b97bf3fd | 168 | { |
0e65967e | 169 | struct tipc_msg *msg; |
4584310b PG |
170 | struct tipc_port_list dports = {0, NULL, }; |
171 | struct tipc_port_list *item = dp; | |
b97bf3fd PL |
172 | int cnt = 0; |
173 | ||
b97bf3fd PL |
174 | msg = buf_msg(buf); |
175 | ||
176 | /* Create destination port list, if one wasn't supplied */ | |
177 | ||
178 | if (dp == NULL) { | |
4323add6 | 179 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
180 | msg_namelower(msg), |
181 | msg_nameupper(msg), | |
182 | TIPC_CLUSTER_SCOPE, | |
183 | &dports); | |
184 | item = dp = &dports; | |
185 | } | |
186 | ||
187 | /* Deliver a copy of message to each destination port */ | |
188 | ||
189 | if (dp->count != 0) { | |
7f47f5c7 | 190 | msg_set_destnode(msg, tipc_own_addr); |
b97bf3fd PL |
191 | if (dp->count == 1) { |
192 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
193 | tipc_port_recv_msg(buf); |
194 | tipc_port_list_free(dp); | |
b97bf3fd PL |
195 | return; |
196 | } | |
197 | for (; cnt < dp->count; cnt++) { | |
198 | int index = cnt % PLSIZE; | |
199 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
200 | ||
201 | if (b == NULL) { | |
a10bd924 | 202 | warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
203 | goto exit; |
204 | } | |
a016892c | 205 | if ((index == 0) && (cnt != 0)) |
b97bf3fd | 206 | item = item->next; |
0e65967e | 207 | msg_set_destport(buf_msg(b), item->ports[index]); |
4323add6 | 208 | tipc_port_recv_msg(b); |
b97bf3fd PL |
209 | } |
210 | } | |
211 | exit: | |
5f6d9123 | 212 | kfree_skb(buf); |
4323add6 | 213 | tipc_port_list_free(dp); |
b97bf3fd PL |
214 | } |
215 | ||
216 | /** | |
7ef43eba | 217 | * tipc_createport_raw - create a generic TIPC port |
c4307285 | 218 | * |
0ea52241 | 219 | * Returns pointer to (locked) TIPC port, or NULL if unable to create it |
b97bf3fd PL |
220 | */ |
221 | ||
0ea52241 | 222 | struct tipc_port *tipc_createport_raw(void *usr_handle, |
b97bf3fd PL |
223 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), |
224 | void (*wakeup)(struct tipc_port *), | |
0ea52241 | 225 | const u32 importance) |
b97bf3fd | 226 | { |
23dd4cce | 227 | struct tipc_port *p_ptr; |
b97bf3fd PL |
228 | struct tipc_msg *msg; |
229 | u32 ref; | |
230 | ||
0da974f4 | 231 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 AS |
232 | if (!p_ptr) { |
233 | warn("Port creation failed, no memory\n"); | |
0ea52241 | 234 | return NULL; |
b97bf3fd | 235 | } |
23dd4cce | 236 | ref = tipc_ref_acquire(p_ptr, &p_ptr->lock); |
b97bf3fd | 237 | if (!ref) { |
a10bd924 | 238 | warn("Port creation failed, reference table exhausted\n"); |
b97bf3fd | 239 | kfree(p_ptr); |
0ea52241 | 240 | return NULL; |
b97bf3fd PL |
241 | } |
242 | ||
23dd4cce AS |
243 | p_ptr->usr_handle = usr_handle; |
244 | p_ptr->max_pkt = MAX_PKT_DEFAULT; | |
245 | p_ptr->ref = ref; | |
b97bf3fd PL |
246 | INIT_LIST_HEAD(&p_ptr->wait_list); |
247 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd PL |
248 | p_ptr->dispatcher = dispatcher; |
249 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 250 | p_ptr->user_port = NULL; |
b97bf3fd | 251 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
b97bf3fd PL |
252 | INIT_LIST_HEAD(&p_ptr->publications); |
253 | INIT_LIST_HEAD(&p_ptr->port_list); | |
f21536d1 AS |
254 | |
255 | /* | |
256 | * Must hold port list lock while initializing message header template | |
257 | * to ensure a change to node's own network address doesn't result | |
258 | * in template containing out-dated network address information | |
259 | */ | |
260 | ||
261 | spin_lock_bh(&tipc_port_list_lock); | |
262 | msg = &p_ptr->phdr; | |
263 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0); | |
264 | msg_set_origport(msg, ref); | |
b97bf3fd | 265 | list_add_tail(&p_ptr->port_list, &ports); |
4323add6 | 266 | spin_unlock_bh(&tipc_port_list_lock); |
23dd4cce | 267 | return p_ptr; |
b97bf3fd PL |
268 | } |
269 | ||
270 | int tipc_deleteport(u32 ref) | |
271 | { | |
23dd4cce | 272 | struct tipc_port *p_ptr; |
1fc54d8f | 273 | struct sk_buff *buf = NULL; |
b97bf3fd | 274 | |
1fc54d8f | 275 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 276 | p_ptr = tipc_port_lock(ref); |
c4307285 | 277 | if (!p_ptr) |
b97bf3fd PL |
278 | return -EINVAL; |
279 | ||
4323add6 PL |
280 | tipc_ref_discard(ref); |
281 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
282 | |
283 | k_cancel_timer(&p_ptr->timer); | |
23dd4cce | 284 | if (p_ptr->connected) { |
b97bf3fd | 285 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
4323add6 | 286 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd | 287 | } |
e83504f7 | 288 | kfree(p_ptr->user_port); |
b97bf3fd | 289 | |
4323add6 | 290 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
291 | list_del(&p_ptr->port_list); |
292 | list_del(&p_ptr->wait_list); | |
4323add6 | 293 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
294 | k_term_timer(&p_ptr->timer); |
295 | kfree(p_ptr); | |
4323add6 | 296 | tipc_net_route_msg(buf); |
0e35fd5e | 297 | return 0; |
b97bf3fd PL |
298 | } |
299 | ||
23dd4cce | 300 | static int port_unreliable(struct tipc_port *p_ptr) |
b97bf3fd | 301 | { |
23dd4cce | 302 | return msg_src_droppable(&p_ptr->phdr); |
b97bf3fd PL |
303 | } |
304 | ||
305 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
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 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 313 | tipc_port_unlock(p_ptr); |
0e35fd5e | 314 | return 0; |
b97bf3fd PL |
315 | } |
316 | ||
317 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
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_src_droppable(&p_ptr->phdr, (isunreliable != 0)); |
4323add6 | 325 | tipc_port_unlock(p_ptr); |
0e35fd5e | 326 | return 0; |
b97bf3fd PL |
327 | } |
328 | ||
23dd4cce | 329 | static int port_unreturnable(struct tipc_port *p_ptr) |
b97bf3fd | 330 | { |
23dd4cce | 331 | return msg_dest_droppable(&p_ptr->phdr); |
b97bf3fd PL |
332 | } |
333 | ||
334 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
335 | { | |
23dd4cce | 336 | struct tipc_port *p_ptr; |
c4307285 | 337 | |
4323add6 | 338 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
339 | if (!p_ptr) |
340 | return -EINVAL; | |
341 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 342 | tipc_port_unlock(p_ptr); |
0e35fd5e | 343 | return 0; |
b97bf3fd PL |
344 | } |
345 | ||
346 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
347 | { | |
23dd4cce | 348 | struct tipc_port *p_ptr; |
c4307285 | 349 | |
4323add6 | 350 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
351 | if (!p_ptr) |
352 | return -EINVAL; | |
23dd4cce | 353 | msg_set_dest_droppable(&p_ptr->phdr, (isunrejectable != 0)); |
4323add6 | 354 | tipc_port_unlock(p_ptr); |
0e35fd5e | 355 | return 0; |
b97bf3fd PL |
356 | } |
357 | ||
c4307285 | 358 | /* |
e4a0aee4 AS |
359 | * port_build_proto_msg(): create connection protocol message for port |
360 | * | |
361 | * On entry the port must be locked and connected. | |
b97bf3fd | 362 | */ |
e4a0aee4 AS |
363 | static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr, |
364 | u32 type, u32 ack) | |
b97bf3fd PL |
365 | { |
366 | struct sk_buff *buf; | |
367 | struct tipc_msg *msg; | |
c4307285 | 368 | |
741d9eb7 | 369 | buf = tipc_buf_acquire(INT_H_SIZE); |
b97bf3fd PL |
370 | if (buf) { |
371 | msg = buf_msg(buf); | |
e4a0aee4 AS |
372 | tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE, |
373 | port_peernode(p_ptr)); | |
374 | msg_set_destport(msg, port_peerport(p_ptr)); | |
375 | msg_set_origport(msg, p_ptr->ref); | |
b97bf3fd | 376 | msg_set_msgcnt(msg, ack); |
b97bf3fd PL |
377 | } |
378 | return buf; | |
379 | } | |
380 | ||
b97bf3fd PL |
381 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
382 | { | |
383 | struct tipc_msg *msg = buf_msg(buf); | |
384 | struct sk_buff *rbuf; | |
385 | struct tipc_msg *rmsg; | |
386 | int hdr_sz; | |
7dd1bf28 | 387 | u32 imp; |
b97bf3fd | 388 | u32 data_sz = msg_data_sz(msg); |
017dac31 | 389 | u32 src_node; |
7dd1bf28 | 390 | u32 rmsg_sz; |
b97bf3fd PL |
391 | |
392 | /* discard rejected message if it shouldn't be returned to sender */ | |
76d12527 AS |
393 | |
394 | if (WARN(!msg_isdata(msg), | |
395 | "attempt to reject message with user=%u", msg_user(msg))) { | |
396 | dump_stack(); | |
397 | goto exit; | |
398 | } | |
acc631bf AS |
399 | if (msg_errcode(msg) || msg_dest_droppable(msg)) |
400 | goto exit; | |
b97bf3fd | 401 | |
7dd1bf28 AS |
402 | /* |
403 | * construct returned message by copying rejected message header and | |
404 | * data (or subset), then updating header fields that need adjusting | |
405 | */ | |
406 | ||
407 | hdr_sz = msg_hdr_sz(msg); | |
408 | rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE); | |
409 | ||
410 | rbuf = tipc_buf_acquire(rmsg_sz); | |
acc631bf AS |
411 | if (rbuf == NULL) |
412 | goto exit; | |
413 | ||
b97bf3fd | 414 | rmsg = buf_msg(rbuf); |
7dd1bf28 AS |
415 | skb_copy_to_linear_data(rbuf, msg, rmsg_sz); |
416 | ||
417 | if (msg_connected(rmsg)) { | |
418 | imp = msg_importance(rmsg); | |
419 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
420 | msg_set_importance(rmsg, ++imp); | |
99c14593 | 421 | } |
7dd1bf28 AS |
422 | msg_set_non_seq(rmsg, 0); |
423 | msg_set_size(rmsg, rmsg_sz); | |
424 | msg_set_errcode(rmsg, err); | |
425 | msg_set_prevnode(rmsg, tipc_own_addr); | |
426 | msg_swap_words(rmsg, 4, 5); | |
427 | if (!msg_short(rmsg)) | |
428 | msg_swap_words(rmsg, 6, 7); | |
b97bf3fd PL |
429 | |
430 | /* send self-abort message when rejecting on a connected port */ | |
431 | if (msg_connected(msg)) { | |
23dd4cce | 432 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
433 | |
434 | if (p_ptr) { | |
dff10e9e AS |
435 | struct sk_buff *abuf = NULL; |
436 | ||
23dd4cce | 437 | if (p_ptr->connected) |
b97bf3fd | 438 | abuf = port_build_self_abort_msg(p_ptr, err); |
4323add6 | 439 | tipc_port_unlock(p_ptr); |
dff10e9e | 440 | tipc_net_route_msg(abuf); |
b97bf3fd | 441 | } |
b97bf3fd PL |
442 | } |
443 | ||
acc631bf AS |
444 | /* send returned message & dispose of rejected message */ |
445 | ||
017dac31 | 446 | src_node = msg_prevnode(msg); |
630d920d | 447 | if (in_own_node(src_node)) |
017dac31 AS |
448 | tipc_port_recv_msg(rbuf); |
449 | else | |
450 | tipc_link_send(rbuf, src_node, msg_link_selector(rmsg)); | |
acc631bf | 451 | exit: |
5f6d9123 | 452 | kfree_skb(buf); |
b97bf3fd PL |
453 | return data_sz; |
454 | } | |
455 | ||
23dd4cce | 456 | int tipc_port_reject_sections(struct tipc_port *p_ptr, struct tipc_msg *hdr, |
4323add6 | 457 | struct iovec const *msg_sect, u32 num_sect, |
26896904 | 458 | unsigned int total_len, int err) |
b97bf3fd PL |
459 | { |
460 | struct sk_buff *buf; | |
461 | int res; | |
462 | ||
26896904 | 463 | res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE, |
b97bf3fd PL |
464 | !p_ptr->user_port, &buf); |
465 | if (!buf) | |
466 | return res; | |
467 | ||
468 | return tipc_reject_msg(buf, err); | |
469 | } | |
470 | ||
471 | static void port_timeout(unsigned long ref) | |
472 | { | |
23dd4cce | 473 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 474 | struct sk_buff *buf = NULL; |
b97bf3fd | 475 | |
065fd177 AS |
476 | if (!p_ptr) |
477 | return; | |
478 | ||
23dd4cce | 479 | if (!p_ptr->connected) { |
065fd177 | 480 | tipc_port_unlock(p_ptr); |
b97bf3fd | 481 | return; |
065fd177 | 482 | } |
b97bf3fd PL |
483 | |
484 | /* Last probe answered ? */ | |
485 | if (p_ptr->probing_state == PROBING) { | |
486 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
487 | } else { | |
e4a0aee4 | 488 | buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0); |
b97bf3fd PL |
489 | p_ptr->probing_state = PROBING; |
490 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
491 | } | |
4323add6 PL |
492 | tipc_port_unlock(p_ptr); |
493 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
494 | } |
495 | ||
496 | ||
497 | static void port_handle_node_down(unsigned long ref) | |
498 | { | |
23dd4cce | 499 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
0e65967e | 500 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
501 | |
502 | if (!p_ptr) | |
503 | return; | |
504 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
505 | tipc_port_unlock(p_ptr); |
506 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
507 | } |
508 | ||
509 | ||
23dd4cce | 510 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 511 | { |
e244a915 | 512 | struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err); |
b97bf3fd | 513 | |
e244a915 AS |
514 | if (buf) { |
515 | struct tipc_msg *msg = buf_msg(buf); | |
516 | msg_swap_words(msg, 4, 5); | |
517 | msg_swap_words(msg, 6, 7); | |
518 | } | |
519 | return buf; | |
b97bf3fd PL |
520 | } |
521 | ||
522 | ||
23dd4cce | 523 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 524 | { |
e244a915 AS |
525 | struct sk_buff *buf; |
526 | struct tipc_msg *msg; | |
527 | u32 imp; | |
b97bf3fd | 528 | |
23dd4cce | 529 | if (!p_ptr->connected) |
1fc54d8f | 530 | return NULL; |
e244a915 AS |
531 | |
532 | buf = tipc_buf_acquire(BASIC_H_SIZE); | |
533 | if (buf) { | |
534 | msg = buf_msg(buf); | |
535 | memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE); | |
536 | msg_set_hdr_sz(msg, BASIC_H_SIZE); | |
537 | msg_set_size(msg, BASIC_H_SIZE); | |
538 | imp = msg_importance(msg); | |
539 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
540 | msg_set_importance(msg, ++imp); | |
541 | msg_set_errcode(msg, err); | |
542 | } | |
543 | return buf; | |
b97bf3fd PL |
544 | } |
545 | ||
4323add6 | 546 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
547 | { |
548 | struct tipc_msg *msg = buf_msg(buf); | |
1c1a551a | 549 | struct tipc_port *p_ptr; |
1fc54d8f | 550 | struct sk_buff *r_buf = NULL; |
1c1a551a AS |
551 | u32 destport = msg_destport(msg); |
552 | int wakeable; | |
553 | ||
554 | /* Validate connection */ | |
555 | ||
556 | p_ptr = tipc_port_lock(destport); | |
f0712e86 | 557 | if (!p_ptr || !p_ptr->connected || !tipc_port_peer_msg(p_ptr, msg)) { |
f55b5640 AS |
558 | r_buf = tipc_buf_acquire(BASIC_H_SIZE); |
559 | if (r_buf) { | |
560 | msg = buf_msg(r_buf); | |
561 | tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG, | |
f0712e86 | 562 | BASIC_H_SIZE, msg_orignode(msg)); |
f55b5640 AS |
563 | msg_set_errcode(msg, TIPC_ERR_NO_PORT); |
564 | msg_set_origport(msg, destport); | |
f0712e86 | 565 | msg_set_destport(msg, msg_origport(msg)); |
f55b5640 | 566 | } |
1c1a551a AS |
567 | if (p_ptr) |
568 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
569 | goto exit; |
570 | } | |
571 | ||
1c1a551a AS |
572 | /* Process protocol message sent by peer */ |
573 | ||
574 | switch (msg_type(msg)) { | |
575 | case CONN_ACK: | |
576 | wakeable = tipc_port_congested(p_ptr) && p_ptr->congested && | |
577 | p_ptr->wakeup; | |
578 | p_ptr->acked += msg_msgcnt(msg); | |
579 | if (!tipc_port_congested(p_ptr)) { | |
580 | p_ptr->congested = 0; | |
581 | if (wakeable) | |
582 | p_ptr->wakeup(p_ptr); | |
583 | } | |
584 | break; | |
585 | case CONN_PROBE: | |
e4a0aee4 | 586 | r_buf = port_build_proto_msg(p_ptr, CONN_PROBE_REPLY, 0); |
1c1a551a AS |
587 | break; |
588 | default: | |
589 | /* CONN_PROBE_REPLY or unrecognized - no action required */ | |
590 | break; | |
b97bf3fd PL |
591 | } |
592 | p_ptr->probing_state = CONFIRMED; | |
1c1a551a | 593 | tipc_port_unlock(p_ptr); |
b97bf3fd | 594 | exit: |
4323add6 | 595 | tipc_net_route_msg(r_buf); |
5f6d9123 | 596 | kfree_skb(buf); |
b97bf3fd PL |
597 | } |
598 | ||
23dd4cce | 599 | static void port_print(struct tipc_port *p_ptr, struct print_buf *buf, int full_id) |
b97bf3fd | 600 | { |
c4307285 | 601 | struct publication *publ; |
b97bf3fd PL |
602 | |
603 | if (full_id) | |
c4307285 | 604 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 605 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
23dd4cce | 606 | tipc_node(tipc_own_addr), p_ptr->ref); |
b97bf3fd | 607 | else |
23dd4cce | 608 | tipc_printf(buf, "%-10u:", p_ptr->ref); |
b97bf3fd | 609 | |
23dd4cce | 610 | if (p_ptr->connected) { |
c4307285 YH |
611 | u32 dport = port_peerport(p_ptr); |
612 | u32 destnode = port_peernode(p_ptr); | |
613 | ||
614 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
615 | tipc_zone(destnode), tipc_cluster(destnode), | |
616 | tipc_node(destnode), dport); | |
23dd4cce | 617 | if (p_ptr->conn_type != 0) |
c4307285 | 618 | tipc_printf(buf, " via {%u,%u}", |
23dd4cce AS |
619 | p_ptr->conn_type, |
620 | p_ptr->conn_instance); | |
621 | } else if (p_ptr->published) { | |
c4307285 YH |
622 | tipc_printf(buf, " bound to"); |
623 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
624 | if (publ->lower == publ->upper) |
625 | tipc_printf(buf, " {%u,%u}", publ->type, | |
626 | publ->lower); | |
627 | else | |
c4307285 | 628 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 629 | publ->lower, publ->upper); |
c4307285 YH |
630 | } |
631 | } | |
632 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
633 | } |
634 | ||
635 | #define MAX_PORT_QUERY 32768 | |
636 | ||
4323add6 | 637 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
638 | { |
639 | struct sk_buff *buf; | |
640 | struct tlv_desc *rep_tlv; | |
641 | struct print_buf pb; | |
23dd4cce | 642 | struct tipc_port *p_ptr; |
b97bf3fd PL |
643 | int str_len; |
644 | ||
4323add6 | 645 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
646 | if (!buf) |
647 | return NULL; | |
648 | rep_tlv = (struct tlv_desc *)buf->data; | |
649 | ||
4323add6 PL |
650 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
651 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd | 652 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 653 | spin_lock_bh(p_ptr->lock); |
b97bf3fd | 654 | port_print(p_ptr, &pb, 0); |
23dd4cce | 655 | spin_unlock_bh(p_ptr->lock); |
b97bf3fd | 656 | } |
4323add6 PL |
657 | spin_unlock_bh(&tipc_port_list_lock); |
658 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
659 | |
660 | skb_put(buf, TLV_SPACE(str_len)); | |
661 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
662 | ||
663 | return buf; | |
664 | } | |
665 | ||
4323add6 | 666 | void tipc_port_reinit(void) |
b97bf3fd | 667 | { |
23dd4cce | 668 | struct tipc_port *p_ptr; |
b97bf3fd PL |
669 | struct tipc_msg *msg; |
670 | ||
4323add6 | 671 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 672 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 673 | msg = &p_ptr->phdr; |
6d4a6672 | 674 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
675 | msg_set_orignode(msg, tipc_own_addr); |
676 | } | |
4323add6 | 677 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
678 | } |
679 | ||
680 | ||
681 | /* | |
682 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
683 | * to the tipc_port interface. | |
684 | */ | |
685 | ||
686 | static void port_dispatcher_sigh(void *dummy) | |
687 | { | |
688 | struct sk_buff *buf; | |
689 | ||
690 | spin_lock_bh(&queue_lock); | |
691 | buf = msg_queue_head; | |
1fc54d8f | 692 | msg_queue_head = NULL; |
b97bf3fd PL |
693 | spin_unlock_bh(&queue_lock); |
694 | ||
695 | while (buf) { | |
23dd4cce | 696 | struct tipc_port *p_ptr; |
b97bf3fd PL |
697 | struct user_port *up_ptr; |
698 | struct tipc_portid orig; | |
699 | struct tipc_name_seq dseq; | |
700 | void *usr_handle; | |
701 | int connected; | |
f0712e86 | 702 | int peer_invalid; |
b97bf3fd | 703 | int published; |
9688243b | 704 | u32 message_type; |
b97bf3fd PL |
705 | |
706 | struct sk_buff *next = buf->next; | |
707 | struct tipc_msg *msg = buf_msg(buf); | |
708 | u32 dref = msg_destport(msg); | |
c4307285 | 709 | |
9688243b AS |
710 | message_type = msg_type(msg); |
711 | if (message_type > TIPC_DIRECT_MSG) | |
712 | goto reject; /* Unsupported message type */ | |
713 | ||
4323add6 | 714 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
715 | if (!p_ptr) |
716 | goto reject; /* Port deleted while msg in queue */ | |
717 | ||
b97bf3fd PL |
718 | orig.ref = msg_origport(msg); |
719 | orig.node = msg_orignode(msg); | |
720 | up_ptr = p_ptr->user_port; | |
721 | usr_handle = up_ptr->usr_handle; | |
23dd4cce | 722 | connected = p_ptr->connected; |
f0712e86 | 723 | peer_invalid = connected && !tipc_port_peer_msg(p_ptr, msg); |
23dd4cce | 724 | published = p_ptr->published; |
b97bf3fd PL |
725 | |
726 | if (unlikely(msg_errcode(msg))) | |
727 | goto err; | |
728 | ||
9688243b | 729 | switch (message_type) { |
c4307285 | 730 | |
b97bf3fd PL |
731 | case TIPC_CONN_MSG:{ |
732 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
cb7ce914 | 733 | u32 dsz; |
b97bf3fd | 734 | |
4cec72c8 | 735 | tipc_port_unlock(p_ptr); |
5307e469 AS |
736 | if (unlikely(!cb)) |
737 | goto reject; | |
b97bf3fd | 738 | if (unlikely(!connected)) { |
84b07c16 | 739 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 740 | goto reject; |
f0712e86 | 741 | } else if (peer_invalid) |
b97bf3fd | 742 | goto reject; |
cb7ce914 AS |
743 | dsz = msg_data_sz(msg); |
744 | if (unlikely(dsz && | |
745 | (++p_ptr->conn_unacked >= | |
746 | TIPC_FLOW_CONTROL_WIN))) | |
c4307285 | 747 | tipc_acknowledge(dref, |
23dd4cce | 748 | p_ptr->conn_unacked); |
b97bf3fd | 749 | skb_pull(buf, msg_hdr_sz(msg)); |
cb7ce914 | 750 | cb(usr_handle, dref, &buf, msg_data(msg), dsz); |
b97bf3fd PL |
751 | break; |
752 | } | |
753 | case TIPC_DIRECT_MSG:{ | |
754 | tipc_msg_event cb = up_ptr->msg_cb; | |
755 | ||
4cec72c8 | 756 | tipc_port_unlock(p_ptr); |
5307e469 | 757 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
758 | goto reject; |
759 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 760 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
761 | msg_data_sz(msg), msg_importance(msg), |
762 | &orig); | |
763 | break; | |
764 | } | |
9688243b | 765 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
766 | case TIPC_NAMED_MSG:{ |
767 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
768 | ||
4cec72c8 | 769 | tipc_port_unlock(p_ptr); |
5307e469 | 770 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
771 | goto reject; |
772 | dseq.type = msg_nametype(msg); | |
773 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
774 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
775 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 776 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 777 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
778 | msg_data_sz(msg), msg_importance(msg), |
779 | &orig, &dseq); | |
780 | break; | |
781 | } | |
782 | } | |
783 | if (buf) | |
5f6d9123 | 784 | kfree_skb(buf); |
b97bf3fd PL |
785 | buf = next; |
786 | continue; | |
787 | err: | |
9688243b | 788 | switch (message_type) { |
c4307285 | 789 | |
b97bf3fd | 790 | case TIPC_CONN_MSG:{ |
c4307285 | 791 | tipc_conn_shutdown_event cb = |
b97bf3fd | 792 | up_ptr->conn_err_cb; |
b97bf3fd | 793 | |
4cec72c8 | 794 | tipc_port_unlock(p_ptr); |
f0712e86 | 795 | if (!cb || !connected || peer_invalid) |
b97bf3fd PL |
796 | break; |
797 | tipc_disconnect(dref); | |
798 | skb_pull(buf, msg_hdr_sz(msg)); | |
799 | cb(usr_handle, dref, &buf, msg_data(msg), | |
800 | msg_data_sz(msg), msg_errcode(msg)); | |
801 | break; | |
802 | } | |
803 | case TIPC_DIRECT_MSG:{ | |
804 | tipc_msg_err_event cb = up_ptr->err_cb; | |
805 | ||
4cec72c8 | 806 | tipc_port_unlock(p_ptr); |
5307e469 | 807 | if (!cb || connected) |
b97bf3fd PL |
808 | break; |
809 | skb_pull(buf, msg_hdr_sz(msg)); | |
810 | cb(usr_handle, dref, &buf, msg_data(msg), | |
811 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
812 | break; | |
813 | } | |
9688243b | 814 | case TIPC_MCAST_MSG: |
b97bf3fd | 815 | case TIPC_NAMED_MSG:{ |
c4307285 | 816 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
817 | up_ptr->named_err_cb; |
818 | ||
4cec72c8 | 819 | tipc_port_unlock(p_ptr); |
5307e469 | 820 | if (!cb || connected) |
b97bf3fd PL |
821 | break; |
822 | dseq.type = msg_nametype(msg); | |
823 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
824 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
825 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 826 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 827 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
828 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
829 | break; | |
830 | } | |
831 | } | |
832 | if (buf) | |
5f6d9123 | 833 | kfree_skb(buf); |
b97bf3fd PL |
834 | buf = next; |
835 | continue; | |
836 | reject: | |
837 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
838 | buf = next; | |
839 | } | |
840 | } | |
841 | ||
842 | /* | |
843 | * port_dispatcher(): Dispatcher for messages destinated | |
844 | * to the tipc_port interface. Called with port locked. | |
845 | */ | |
846 | ||
847 | static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf) | |
848 | { | |
849 | buf->next = NULL; | |
850 | spin_lock_bh(&queue_lock); | |
851 | if (msg_queue_head) { | |
852 | msg_queue_tail->next = buf; | |
853 | msg_queue_tail = buf; | |
854 | } else { | |
855 | msg_queue_tail = msg_queue_head = buf; | |
4323add6 | 856 | tipc_k_signal((Handler)port_dispatcher_sigh, 0); |
b97bf3fd PL |
857 | } |
858 | spin_unlock_bh(&queue_lock); | |
0e35fd5e | 859 | return 0; |
b97bf3fd PL |
860 | } |
861 | ||
c4307285 | 862 | /* |
b97bf3fd | 863 | * Wake up port after congestion: Called with port locked, |
c4307285 | 864 | * |
b97bf3fd PL |
865 | */ |
866 | ||
867 | static void port_wakeup_sh(unsigned long ref) | |
868 | { | |
23dd4cce | 869 | struct tipc_port *p_ptr; |
b97bf3fd | 870 | struct user_port *up_ptr; |
1fc54d8f SR |
871 | tipc_continue_event cb = NULL; |
872 | void *uh = NULL; | |
b97bf3fd | 873 | |
4323add6 | 874 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
875 | if (p_ptr) { |
876 | up_ptr = p_ptr->user_port; | |
877 | if (up_ptr) { | |
878 | cb = up_ptr->continue_event_cb; | |
879 | uh = up_ptr->usr_handle; | |
880 | } | |
4323add6 | 881 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
882 | } |
883 | if (cb) | |
884 | cb(uh, ref); | |
885 | } | |
886 | ||
887 | ||
888 | static void port_wakeup(struct tipc_port *p_ptr) | |
889 | { | |
4323add6 | 890 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
891 | } |
892 | ||
893 | void tipc_acknowledge(u32 ref, u32 ack) | |
894 | { | |
23dd4cce | 895 | struct tipc_port *p_ptr; |
1fc54d8f | 896 | struct sk_buff *buf = NULL; |
b97bf3fd | 897 | |
4323add6 | 898 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
899 | if (!p_ptr) |
900 | return; | |
23dd4cce AS |
901 | if (p_ptr->connected) { |
902 | p_ptr->conn_unacked -= ack; | |
e4a0aee4 | 903 | buf = port_build_proto_msg(p_ptr, CONN_ACK, ack); |
b97bf3fd | 904 | } |
4323add6 PL |
905 | tipc_port_unlock(p_ptr); |
906 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
907 | } |
908 | ||
909 | /* | |
b0c1e928 | 910 | * tipc_createport(): user level call. |
b97bf3fd PL |
911 | */ |
912 | ||
b0c1e928 | 913 | int tipc_createport(void *usr_handle, |
c4307285 YH |
914 | unsigned int importance, |
915 | tipc_msg_err_event error_cb, | |
916 | tipc_named_msg_err_event named_error_cb, | |
917 | tipc_conn_shutdown_event conn_error_cb, | |
918 | tipc_msg_event msg_cb, | |
919 | tipc_named_msg_event named_msg_cb, | |
920 | tipc_conn_msg_event conn_msg_cb, | |
b97bf3fd PL |
921 | tipc_continue_event continue_event_cb,/* May be zero */ |
922 | u32 *portref) | |
923 | { | |
924 | struct user_port *up_ptr; | |
23dd4cce | 925 | struct tipc_port *p_ptr; |
b97bf3fd | 926 | |
0da974f4 | 927 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 928 | if (!up_ptr) { |
a75bf874 | 929 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
930 | return -ENOMEM; |
931 | } | |
23dd4cce | 932 | p_ptr = (struct tipc_port *)tipc_createport_raw(NULL, port_dispatcher, |
0ea52241 AS |
933 | port_wakeup, importance); |
934 | if (!p_ptr) { | |
b97bf3fd PL |
935 | kfree(up_ptr); |
936 | return -ENOMEM; | |
937 | } | |
938 | ||
939 | p_ptr->user_port = up_ptr; | |
b97bf3fd | 940 | up_ptr->usr_handle = usr_handle; |
23dd4cce | 941 | up_ptr->ref = p_ptr->ref; |
b97bf3fd PL |
942 | up_ptr->err_cb = error_cb; |
943 | up_ptr->named_err_cb = named_error_cb; | |
944 | up_ptr->conn_err_cb = conn_error_cb; | |
945 | up_ptr->msg_cb = msg_cb; | |
946 | up_ptr->named_msg_cb = named_msg_cb; | |
947 | up_ptr->conn_msg_cb = conn_msg_cb; | |
948 | up_ptr->continue_event_cb = continue_event_cb; | |
23dd4cce | 949 | *portref = p_ptr->ref; |
4323add6 | 950 | tipc_port_unlock(p_ptr); |
0e35fd5e | 951 | return 0; |
b97bf3fd PL |
952 | } |
953 | ||
b97bf3fd PL |
954 | int tipc_portimportance(u32 ref, unsigned int *importance) |
955 | { | |
23dd4cce | 956 | struct tipc_port *p_ptr; |
c4307285 | 957 | |
4323add6 | 958 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
959 | if (!p_ptr) |
960 | return -EINVAL; | |
23dd4cce | 961 | *importance = (unsigned int)msg_importance(&p_ptr->phdr); |
4cec72c8 | 962 | tipc_port_unlock(p_ptr); |
0e35fd5e | 963 | return 0; |
b97bf3fd PL |
964 | } |
965 | ||
966 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
967 | { | |
23dd4cce | 968 | struct tipc_port *p_ptr; |
b97bf3fd PL |
969 | |
970 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
971 | return -EINVAL; | |
972 | ||
4323add6 | 973 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
974 | if (!p_ptr) |
975 | return -EINVAL; | |
23dd4cce | 976 | msg_set_importance(&p_ptr->phdr, (u32)imp); |
4cec72c8 | 977 | tipc_port_unlock(p_ptr); |
0e35fd5e | 978 | return 0; |
b97bf3fd PL |
979 | } |
980 | ||
981 | ||
982 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
983 | { | |
23dd4cce | 984 | struct tipc_port *p_ptr; |
b97bf3fd PL |
985 | struct publication *publ; |
986 | u32 key; | |
987 | int res = -EINVAL; | |
988 | ||
4323add6 | 989 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
990 | if (!p_ptr) |
991 | return -EINVAL; | |
992 | ||
23dd4cce | 993 | if (p_ptr->connected) |
b97bf3fd PL |
994 | goto exit; |
995 | if (seq->lower > seq->upper) | |
996 | goto exit; | |
997 | if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE)) | |
998 | goto exit; | |
999 | key = ref + p_ptr->pub_count + 1; | |
1000 | if (key == ref) { | |
1001 | res = -EADDRINUSE; | |
1002 | goto exit; | |
1003 | } | |
4323add6 | 1004 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
23dd4cce | 1005 | scope, p_ptr->ref, key); |
b97bf3fd PL |
1006 | if (publ) { |
1007 | list_add(&publ->pport_list, &p_ptr->publications); | |
1008 | p_ptr->pub_count++; | |
23dd4cce | 1009 | p_ptr->published = 1; |
0e35fd5e | 1010 | res = 0; |
b97bf3fd PL |
1011 | } |
1012 | exit: | |
4323add6 | 1013 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1014 | return res; |
1015 | } | |
1016 | ||
1017 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
1018 | { | |
23dd4cce | 1019 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1020 | struct publication *publ; |
1021 | struct publication *tpubl; | |
1022 | int res = -EINVAL; | |
c4307285 | 1023 | |
4323add6 | 1024 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1025 | if (!p_ptr) |
1026 | return -EINVAL; | |
b97bf3fd | 1027 | if (!seq) { |
c4307285 | 1028 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1029 | &p_ptr->publications, pport_list) { |
c4307285 | 1030 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1031 | publ->ref, publ->key); |
b97bf3fd | 1032 | } |
0e35fd5e | 1033 | res = 0; |
b97bf3fd | 1034 | } else { |
c4307285 | 1035 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1036 | &p_ptr->publications, pport_list) { |
1037 | if (publ->scope != scope) | |
1038 | continue; | |
1039 | if (publ->type != seq->type) | |
1040 | continue; | |
1041 | if (publ->lower != seq->lower) | |
1042 | continue; | |
1043 | if (publ->upper != seq->upper) | |
1044 | break; | |
c4307285 | 1045 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1046 | publ->ref, publ->key); |
0e35fd5e | 1047 | res = 0; |
b97bf3fd PL |
1048 | break; |
1049 | } | |
1050 | } | |
1051 | if (list_empty(&p_ptr->publications)) | |
23dd4cce | 1052 | p_ptr->published = 0; |
4323add6 | 1053 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1054 | return res; |
1055 | } | |
1056 | ||
1057 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1058 | { | |
23dd4cce | 1059 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1060 | struct tipc_msg *msg; |
1061 | int res = -EINVAL; | |
1062 | ||
4323add6 | 1063 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1064 | if (!p_ptr) |
1065 | return -EINVAL; | |
23dd4cce | 1066 | if (p_ptr->published || p_ptr->connected) |
b97bf3fd PL |
1067 | goto exit; |
1068 | if (!peer->ref) | |
1069 | goto exit; | |
1070 | ||
23dd4cce | 1071 | msg = &p_ptr->phdr; |
b97bf3fd PL |
1072 | msg_set_destnode(msg, peer->node); |
1073 | msg_set_destport(msg, peer->ref); | |
b97bf3fd | 1074 | msg_set_type(msg, TIPC_CONN_MSG); |
53b94364 | 1075 | msg_set_lookup_scope(msg, 0); |
08c80e9a | 1076 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
1077 | |
1078 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1079 | p_ptr->probing_state = CONFIRMED; | |
23dd4cce | 1080 | p_ptr->connected = 1; |
b97bf3fd PL |
1081 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
1082 | ||
0e65967e | 1083 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 1084 | (void *)(unsigned long)ref, |
b97bf3fd | 1085 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 1086 | res = 0; |
b97bf3fd | 1087 | exit: |
4323add6 | 1088 | tipc_port_unlock(p_ptr); |
23dd4cce | 1089 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1090 | return res; |
1091 | } | |
1092 | ||
0c3141e9 AS |
1093 | /** |
1094 | * tipc_disconnect_port - disconnect port from peer | |
1095 | * | |
1096 | * Port must be locked. | |
1097 | */ | |
1098 | ||
1099 | int tipc_disconnect_port(struct tipc_port *tp_ptr) | |
1100 | { | |
1101 | int res; | |
1102 | ||
1103 | if (tp_ptr->connected) { | |
1104 | tp_ptr->connected = 0; | |
1105 | /* let timer expire on it's own to avoid deadlock! */ | |
1106 | tipc_nodesub_unsubscribe( | |
23dd4cce | 1107 | &((struct tipc_port *)tp_ptr)->subscription); |
0e35fd5e | 1108 | res = 0; |
0c3141e9 AS |
1109 | } else { |
1110 | res = -ENOTCONN; | |
1111 | } | |
1112 | return res; | |
1113 | } | |
1114 | ||
b97bf3fd PL |
1115 | /* |
1116 | * tipc_disconnect(): Disconnect port form peer. | |
1117 | * This is a node local operation. | |
1118 | */ | |
1119 | ||
1120 | int tipc_disconnect(u32 ref) | |
1121 | { | |
23dd4cce | 1122 | struct tipc_port *p_ptr; |
0c3141e9 | 1123 | int res; |
b97bf3fd | 1124 | |
4323add6 | 1125 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1126 | if (!p_ptr) |
1127 | return -EINVAL; | |
0c3141e9 | 1128 | res = tipc_disconnect_port((struct tipc_port *)p_ptr); |
4323add6 | 1129 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1130 | return res; |
1131 | } | |
1132 | ||
1133 | /* | |
1134 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1135 | */ | |
1136 | int tipc_shutdown(u32 ref) | |
1137 | { | |
23dd4cce | 1138 | struct tipc_port *p_ptr; |
1fc54d8f | 1139 | struct sk_buff *buf = NULL; |
b97bf3fd | 1140 | |
4323add6 | 1141 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1142 | if (!p_ptr) |
1143 | return -EINVAL; | |
1144 | ||
e244a915 | 1145 | buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN); |
4323add6 PL |
1146 | tipc_port_unlock(p_ptr); |
1147 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1148 | return tipc_disconnect(ref); |
1149 | } | |
1150 | ||
9b641251 AS |
1151 | /** |
1152 | * tipc_port_recv_msg - receive message from lower layer and deliver to port user | |
1153 | */ | |
1154 | ||
1155 | int tipc_port_recv_msg(struct sk_buff *buf) | |
1156 | { | |
1157 | struct tipc_port *p_ptr; | |
1158 | struct tipc_msg *msg = buf_msg(buf); | |
1159 | u32 destport = msg_destport(msg); | |
1160 | u32 dsz = msg_data_sz(msg); | |
1161 | u32 err; | |
1162 | ||
1163 | /* forward unresolved named message */ | |
1164 | if (unlikely(!destport)) { | |
1165 | tipc_net_route_msg(buf); | |
1166 | return dsz; | |
1167 | } | |
1168 | ||
1169 | /* validate destination & pass to port, otherwise reject message */ | |
1170 | p_ptr = tipc_port_lock(destport); | |
1171 | if (likely(p_ptr)) { | |
9b641251 AS |
1172 | err = p_ptr->dispatcher(p_ptr, buf); |
1173 | tipc_port_unlock(p_ptr); | |
1174 | if (likely(!err)) | |
1175 | return dsz; | |
1176 | } else { | |
1177 | err = TIPC_ERR_NO_PORT; | |
1178 | } | |
f0712e86 | 1179 | |
9b641251 AS |
1180 | return tipc_reject_msg(buf, err); |
1181 | } | |
1182 | ||
b97bf3fd | 1183 | /* |
4323add6 | 1184 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1185 | * message for this node. |
1186 | */ | |
1187 | ||
23dd4cce | 1188 | static int tipc_port_recv_sections(struct tipc_port *sender, unsigned int num_sect, |
26896904 AS |
1189 | struct iovec const *msg_sect, |
1190 | unsigned int total_len) | |
b97bf3fd PL |
1191 | { |
1192 | struct sk_buff *buf; | |
1193 | int res; | |
c4307285 | 1194 | |
26896904 | 1195 | res = tipc_msg_build(&sender->phdr, msg_sect, num_sect, total_len, |
b97bf3fd PL |
1196 | MAX_MSG_SIZE, !sender->user_port, &buf); |
1197 | if (likely(buf)) | |
4323add6 | 1198 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1199 | return res; |
1200 | } | |
1201 | ||
1202 | /** | |
1203 | * tipc_send - send message sections on connection | |
1204 | */ | |
1205 | ||
26896904 AS |
1206 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect, |
1207 | unsigned int total_len) | |
b97bf3fd | 1208 | { |
23dd4cce | 1209 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1210 | u32 destnode; |
1211 | int res; | |
1212 | ||
4323add6 | 1213 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1214 | if (!p_ptr || !p_ptr->connected) |
b97bf3fd PL |
1215 | return -EINVAL; |
1216 | ||
23dd4cce | 1217 | p_ptr->congested = 1; |
4323add6 | 1218 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd | 1219 | destnode = port_peernode(p_ptr); |
8a55fe74 | 1220 | if (likely(!in_own_node(destnode))) |
4323add6 | 1221 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
26896904 | 1222 | total_len, destnode); |
b97bf3fd | 1223 | else |
26896904 AS |
1224 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, |
1225 | total_len); | |
b97bf3fd PL |
1226 | |
1227 | if (likely(res != -ELINKCONG)) { | |
23dd4cce | 1228 | p_ptr->congested = 0; |
cb7ce914 AS |
1229 | if (res > 0) |
1230 | p_ptr->sent++; | |
b97bf3fd PL |
1231 | return res; |
1232 | } | |
1233 | } | |
1234 | if (port_unreliable(p_ptr)) { | |
23dd4cce | 1235 | p_ptr->congested = 0; |
26896904 | 1236 | return total_len; |
b97bf3fd PL |
1237 | } |
1238 | return -ELINKCONG; | |
1239 | } | |
1240 | ||
b97bf3fd | 1241 | /** |
12bae479 | 1242 | * tipc_send2name - send message sections to port name |
b97bf3fd PL |
1243 | */ |
1244 | ||
12bae479 | 1245 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
26896904 AS |
1246 | unsigned int num_sect, struct iovec const *msg_sect, |
1247 | unsigned int total_len) | |
b97bf3fd | 1248 | { |
23dd4cce | 1249 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1250 | struct tipc_msg *msg; |
1251 | u32 destnode = domain; | |
9ccc2eb4 | 1252 | u32 destport; |
b97bf3fd PL |
1253 | int res; |
1254 | ||
4323add6 | 1255 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1256 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1257 | return -EINVAL; |
1258 | ||
23dd4cce | 1259 | msg = &p_ptr->phdr; |
b97bf3fd | 1260 | msg_set_type(msg, TIPC_NAMED_MSG); |
741d9eb7 | 1261 | msg_set_hdr_sz(msg, NAMED_H_SIZE); |
b97bf3fd PL |
1262 | msg_set_nametype(msg, name->type); |
1263 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 1264 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 1265 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1266 | msg_set_destnode(msg, destnode); |
1267 | msg_set_destport(msg, destport); | |
1268 | ||
bc9f8143 | 1269 | if (likely(destport || destnode)) { |
8a55fe74 | 1270 | if (likely(in_own_node(destnode))) |
cb7ce914 | 1271 | res = tipc_port_recv_sections(p_ptr, num_sect, |
26896904 | 1272 | msg_sect, total_len); |
b8f683d1 | 1273 | else if (tipc_own_addr) |
cb7ce914 | 1274 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, |
26896904 AS |
1275 | num_sect, total_len, |
1276 | destnode); | |
b8f683d1 AS |
1277 | else |
1278 | res = tipc_port_reject_sections(p_ptr, msg, msg_sect, | |
1279 | num_sect, total_len, | |
1280 | TIPC_ERR_NO_NODE); | |
cb7ce914 AS |
1281 | if (likely(res != -ELINKCONG)) { |
1282 | if (res > 0) | |
1283 | p_ptr->sent++; | |
b97bf3fd | 1284 | return res; |
cb7ce914 | 1285 | } |
b97bf3fd | 1286 | if (port_unreliable(p_ptr)) { |
26896904 | 1287 | return total_len; |
b97bf3fd PL |
1288 | } |
1289 | return -ELINKCONG; | |
1290 | } | |
c4307285 | 1291 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
26896904 | 1292 | total_len, TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1293 | } |
1294 | ||
1295 | /** | |
12bae479 | 1296 | * tipc_send2port - send message sections to port identity |
b97bf3fd PL |
1297 | */ |
1298 | ||
12bae479 | 1299 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
26896904 AS |
1300 | unsigned int num_sect, struct iovec const *msg_sect, |
1301 | unsigned int total_len) | |
b97bf3fd | 1302 | { |
23dd4cce | 1303 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1304 | struct tipc_msg *msg; |
1305 | int res; | |
1306 | ||
4323add6 | 1307 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1308 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1309 | return -EINVAL; |
1310 | ||
23dd4cce | 1311 | msg = &p_ptr->phdr; |
b97bf3fd | 1312 | msg_set_type(msg, TIPC_DIRECT_MSG); |
53b94364 | 1313 | msg_set_lookup_scope(msg, 0); |
b97bf3fd PL |
1314 | msg_set_destnode(msg, dest->node); |
1315 | msg_set_destport(msg, dest->ref); | |
741d9eb7 | 1316 | msg_set_hdr_sz(msg, BASIC_H_SIZE); |
cb7ce914 | 1317 | |
8a55fe74 | 1318 | if (in_own_node(dest->node)) |
26896904 AS |
1319 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, |
1320 | total_len); | |
b8f683d1 | 1321 | else if (tipc_own_addr) |
cb7ce914 | 1322 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
26896904 | 1323 | total_len, dest->node); |
b8f683d1 AS |
1324 | else |
1325 | res = tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, | |
1326 | total_len, TIPC_ERR_NO_NODE); | |
cb7ce914 AS |
1327 | if (likely(res != -ELINKCONG)) { |
1328 | if (res > 0) | |
1329 | p_ptr->sent++; | |
b97bf3fd | 1330 | return res; |
cb7ce914 | 1331 | } |
b97bf3fd | 1332 | if (port_unreliable(p_ptr)) { |
26896904 | 1333 | return total_len; |
b97bf3fd PL |
1334 | } |
1335 | return -ELINKCONG; | |
1336 | } | |
1337 | ||
c4307285 | 1338 | /** |
12bae479 | 1339 | * tipc_send_buf2port - send message buffer to port identity |
b97bf3fd PL |
1340 | */ |
1341 | ||
12bae479 AS |
1342 | int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest, |
1343 | struct sk_buff *buf, unsigned int dsz) | |
b97bf3fd | 1344 | { |
23dd4cce | 1345 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1346 | struct tipc_msg *msg; |
1347 | int res; | |
1348 | ||
23dd4cce AS |
1349 | p_ptr = (struct tipc_port *)tipc_ref_deref(ref); |
1350 | if (!p_ptr || p_ptr->connected) | |
b97bf3fd PL |
1351 | return -EINVAL; |
1352 | ||
23dd4cce | 1353 | msg = &p_ptr->phdr; |
b97bf3fd | 1354 | msg_set_type(msg, TIPC_DIRECT_MSG); |
b97bf3fd PL |
1355 | msg_set_destnode(msg, dest->node); |
1356 | msg_set_destport(msg, dest->ref); | |
741d9eb7 AS |
1357 | msg_set_hdr_sz(msg, BASIC_H_SIZE); |
1358 | msg_set_size(msg, BASIC_H_SIZE + dsz); | |
1359 | if (skb_cow(buf, BASIC_H_SIZE)) | |
b97bf3fd PL |
1360 | return -ENOMEM; |
1361 | ||
741d9eb7 AS |
1362 | skb_push(buf, BASIC_H_SIZE); |
1363 | skb_copy_to_linear_data(buf, msg, BASIC_H_SIZE); | |
cb7ce914 | 1364 | |
8a55fe74 | 1365 | if (in_own_node(dest->node)) |
cb7ce914 AS |
1366 | res = tipc_port_recv_msg(buf); |
1367 | else | |
1368 | res = tipc_send_buf_fast(buf, dest->node); | |
1369 | if (likely(res != -ELINKCONG)) { | |
1370 | if (res > 0) | |
1371 | p_ptr->sent++; | |
b97bf3fd | 1372 | return res; |
cb7ce914 | 1373 | } |
b97bf3fd PL |
1374 | if (port_unreliable(p_ptr)) |
1375 | return dsz; | |
1376 | return -ELINKCONG; | |
1377 | } | |
1378 |