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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 | ||
872f24db | 62 | static u32 port_peernode(struct tipc_port *p_ptr) |
b97bf3fd | 63 | { |
23dd4cce | 64 | return msg_destnode(&p_ptr->phdr); |
b97bf3fd PL |
65 | } |
66 | ||
872f24db | 67 | static u32 port_peerport(struct tipc_port *p_ptr) |
b97bf3fd | 68 | { |
23dd4cce | 69 | return msg_destport(&p_ptr->phdr); |
b97bf3fd PL |
70 | } |
71 | ||
2c53040f | 72 | /** |
f0712e86 AS |
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 | */ | |
f0712e86 AS |
78 | int tipc_port_peer_msg(struct tipc_port *p_ptr, struct tipc_msg *msg) |
79 | { | |
80 | u32 peernode; | |
81 | u32 orignode; | |
82 | ||
83 | if (msg_origport(msg) != port_peerport(p_ptr)) | |
84 | return 0; | |
85 | ||
86 | orignode = msg_orignode(msg); | |
87 | peernode = port_peernode(p_ptr); | |
88 | return (orignode == peernode) || | |
89 | (!orignode && (peernode == tipc_own_addr)) || | |
90 | (!peernode && (orignode == tipc_own_addr)); | |
91 | } | |
92 | ||
b97bf3fd PL |
93 | /** |
94 | * tipc_multicast - send a multicast message to local and remote destinations | |
95 | */ | |
38f232ea | 96 | int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, |
26896904 AS |
97 | u32 num_sect, struct iovec const *msg_sect, |
98 | unsigned int total_len) | |
b97bf3fd PL |
99 | { |
100 | struct tipc_msg *hdr; | |
101 | struct sk_buff *buf; | |
102 | struct sk_buff *ibuf = NULL; | |
4584310b | 103 | struct tipc_port_list dports = {0, NULL, }; |
23dd4cce | 104 | struct tipc_port *oport = tipc_port_deref(ref); |
b97bf3fd PL |
105 | int ext_targets; |
106 | int res; | |
107 | ||
108 | if (unlikely(!oport)) | |
109 | return -EINVAL; | |
110 | ||
111 | /* Create multicast message */ | |
23dd4cce | 112 | hdr = &oport->phdr; |
b97bf3fd | 113 | msg_set_type(hdr, TIPC_MCAST_MSG); |
53b94364 | 114 | msg_set_lookup_scope(hdr, TIPC_CLUSTER_SCOPE); |
7462b9e9 AS |
115 | msg_set_destport(hdr, 0); |
116 | msg_set_destnode(hdr, 0); | |
b97bf3fd PL |
117 | msg_set_nametype(hdr, seq->type); |
118 | msg_set_namelower(hdr, seq->lower); | |
119 | msg_set_nameupper(hdr, seq->upper); | |
120 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | |
26896904 | 121 | res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE, |
b97bf3fd PL |
122 | !oport->user_port, &buf); |
123 | if (unlikely(!buf)) | |
124 | return res; | |
125 | ||
126 | /* Figure out where to send multicast message */ | |
4323add6 PL |
127 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
128 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
129 | |
130 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
131 | if (ext_targets) { |
132 | if (dports.count != 0) { | |
133 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
134 | if (ibuf == NULL) { | |
4323add6 | 135 | tipc_port_list_free(&dports); |
5f6d9123 | 136 | kfree_skb(buf); |
b97bf3fd PL |
137 | return -ENOMEM; |
138 | } | |
139 | } | |
4323add6 | 140 | res = tipc_bclink_send_msg(buf); |
a016892c | 141 | if ((res < 0) && (dports.count != 0)) |
5f6d9123 | 142 | kfree_skb(ibuf); |
b97bf3fd PL |
143 | } else { |
144 | ibuf = buf; | |
145 | } | |
146 | ||
147 | if (res >= 0) { | |
148 | if (ibuf) | |
4323add6 | 149 | tipc_port_recv_mcast(ibuf, &dports); |
b97bf3fd | 150 | } else { |
4323add6 | 151 | tipc_port_list_free(&dports); |
b97bf3fd PL |
152 | } |
153 | return res; | |
154 | } | |
155 | ||
156 | /** | |
4323add6 | 157 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
c4307285 | 158 | * |
b97bf3fd PL |
159 | * If there is no port list, perform a lookup to create one |
160 | */ | |
4584310b | 161 | void tipc_port_recv_mcast(struct sk_buff *buf, struct tipc_port_list *dp) |
b97bf3fd | 162 | { |
0e65967e | 163 | struct tipc_msg *msg; |
4584310b PG |
164 | struct tipc_port_list dports = {0, NULL, }; |
165 | struct tipc_port_list *item = dp; | |
b97bf3fd PL |
166 | int cnt = 0; |
167 | ||
b97bf3fd PL |
168 | msg = buf_msg(buf); |
169 | ||
170 | /* Create destination port list, if one wasn't supplied */ | |
b97bf3fd | 171 | if (dp == NULL) { |
4323add6 | 172 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
173 | msg_namelower(msg), |
174 | msg_nameupper(msg), | |
175 | TIPC_CLUSTER_SCOPE, | |
176 | &dports); | |
177 | item = dp = &dports; | |
178 | } | |
179 | ||
180 | /* Deliver a copy of message to each destination port */ | |
b97bf3fd | 181 | if (dp->count != 0) { |
7f47f5c7 | 182 | msg_set_destnode(msg, tipc_own_addr); |
b97bf3fd PL |
183 | if (dp->count == 1) { |
184 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
185 | tipc_port_recv_msg(buf); |
186 | tipc_port_list_free(dp); | |
b97bf3fd PL |
187 | return; |
188 | } | |
189 | for (; cnt < dp->count; cnt++) { | |
190 | int index = cnt % PLSIZE; | |
191 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
192 | ||
193 | if (b == NULL) { | |
a10bd924 | 194 | warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
195 | goto exit; |
196 | } | |
a016892c | 197 | if ((index == 0) && (cnt != 0)) |
b97bf3fd | 198 | item = item->next; |
0e65967e | 199 | msg_set_destport(buf_msg(b), item->ports[index]); |
4323add6 | 200 | tipc_port_recv_msg(b); |
b97bf3fd PL |
201 | } |
202 | } | |
203 | exit: | |
5f6d9123 | 204 | kfree_skb(buf); |
4323add6 | 205 | tipc_port_list_free(dp); |
b97bf3fd PL |
206 | } |
207 | ||
208 | /** | |
7ef43eba | 209 | * tipc_createport_raw - create a generic TIPC port |
c4307285 | 210 | * |
0ea52241 | 211 | * Returns pointer to (locked) TIPC port, or NULL if unable to create it |
b97bf3fd | 212 | */ |
0ea52241 | 213 | struct tipc_port *tipc_createport_raw(void *usr_handle, |
b97bf3fd PL |
214 | u32 (*dispatcher)(struct tipc_port *, struct sk_buff *), |
215 | void (*wakeup)(struct tipc_port *), | |
0ea52241 | 216 | const u32 importance) |
b97bf3fd | 217 | { |
23dd4cce | 218 | struct tipc_port *p_ptr; |
b97bf3fd PL |
219 | struct tipc_msg *msg; |
220 | u32 ref; | |
221 | ||
0da974f4 | 222 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 AS |
223 | if (!p_ptr) { |
224 | warn("Port creation failed, no memory\n"); | |
0ea52241 | 225 | return NULL; |
b97bf3fd | 226 | } |
23dd4cce | 227 | ref = tipc_ref_acquire(p_ptr, &p_ptr->lock); |
b97bf3fd | 228 | if (!ref) { |
a10bd924 | 229 | warn("Port creation failed, reference table exhausted\n"); |
b97bf3fd | 230 | kfree(p_ptr); |
0ea52241 | 231 | return NULL; |
b97bf3fd PL |
232 | } |
233 | ||
23dd4cce AS |
234 | p_ptr->usr_handle = usr_handle; |
235 | p_ptr->max_pkt = MAX_PKT_DEFAULT; | |
236 | p_ptr->ref = ref; | |
b97bf3fd PL |
237 | INIT_LIST_HEAD(&p_ptr->wait_list); |
238 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd PL |
239 | p_ptr->dispatcher = dispatcher; |
240 | p_ptr->wakeup = wakeup; | |
1fc54d8f | 241 | p_ptr->user_port = NULL; |
b97bf3fd | 242 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
b97bf3fd PL |
243 | INIT_LIST_HEAD(&p_ptr->publications); |
244 | INIT_LIST_HEAD(&p_ptr->port_list); | |
f21536d1 AS |
245 | |
246 | /* | |
247 | * Must hold port list lock while initializing message header template | |
248 | * to ensure a change to node's own network address doesn't result | |
249 | * in template containing out-dated network address information | |
250 | */ | |
f21536d1 AS |
251 | spin_lock_bh(&tipc_port_list_lock); |
252 | msg = &p_ptr->phdr; | |
253 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0); | |
254 | msg_set_origport(msg, ref); | |
b97bf3fd | 255 | list_add_tail(&p_ptr->port_list, &ports); |
4323add6 | 256 | spin_unlock_bh(&tipc_port_list_lock); |
23dd4cce | 257 | return p_ptr; |
b97bf3fd PL |
258 | } |
259 | ||
260 | int tipc_deleteport(u32 ref) | |
261 | { | |
23dd4cce | 262 | struct tipc_port *p_ptr; |
1fc54d8f | 263 | struct sk_buff *buf = NULL; |
b97bf3fd | 264 | |
1fc54d8f | 265 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 266 | p_ptr = tipc_port_lock(ref); |
c4307285 | 267 | if (!p_ptr) |
b97bf3fd PL |
268 | return -EINVAL; |
269 | ||
4323add6 PL |
270 | tipc_ref_discard(ref); |
271 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
272 | |
273 | k_cancel_timer(&p_ptr->timer); | |
23dd4cce | 274 | if (p_ptr->connected) { |
b97bf3fd | 275 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
4323add6 | 276 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd | 277 | } |
e83504f7 | 278 | kfree(p_ptr->user_port); |
b97bf3fd | 279 | |
4323add6 | 280 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
281 | list_del(&p_ptr->port_list); |
282 | list_del(&p_ptr->wait_list); | |
4323add6 | 283 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
284 | k_term_timer(&p_ptr->timer); |
285 | kfree(p_ptr); | |
4323add6 | 286 | tipc_net_route_msg(buf); |
0e35fd5e | 287 | return 0; |
b97bf3fd PL |
288 | } |
289 | ||
23dd4cce | 290 | static int port_unreliable(struct tipc_port *p_ptr) |
b97bf3fd | 291 | { |
23dd4cce | 292 | return msg_src_droppable(&p_ptr->phdr); |
b97bf3fd PL |
293 | } |
294 | ||
295 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
296 | { | |
23dd4cce | 297 | struct tipc_port *p_ptr; |
c4307285 | 298 | |
4323add6 | 299 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
300 | if (!p_ptr) |
301 | return -EINVAL; | |
302 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 303 | tipc_port_unlock(p_ptr); |
0e35fd5e | 304 | return 0; |
b97bf3fd PL |
305 | } |
306 | ||
307 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
308 | { | |
23dd4cce | 309 | struct tipc_port *p_ptr; |
c4307285 | 310 | |
4323add6 | 311 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
312 | if (!p_ptr) |
313 | return -EINVAL; | |
23dd4cce | 314 | msg_set_src_droppable(&p_ptr->phdr, (isunreliable != 0)); |
4323add6 | 315 | tipc_port_unlock(p_ptr); |
0e35fd5e | 316 | return 0; |
b97bf3fd PL |
317 | } |
318 | ||
23dd4cce | 319 | static int port_unreturnable(struct tipc_port *p_ptr) |
b97bf3fd | 320 | { |
23dd4cce | 321 | return msg_dest_droppable(&p_ptr->phdr); |
b97bf3fd PL |
322 | } |
323 | ||
324 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
325 | { | |
23dd4cce | 326 | struct tipc_port *p_ptr; |
c4307285 | 327 | |
4323add6 | 328 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
329 | if (!p_ptr) |
330 | return -EINVAL; | |
331 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 332 | tipc_port_unlock(p_ptr); |
0e35fd5e | 333 | return 0; |
b97bf3fd PL |
334 | } |
335 | ||
336 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
337 | { | |
23dd4cce | 338 | struct tipc_port *p_ptr; |
c4307285 | 339 | |
4323add6 | 340 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
341 | if (!p_ptr) |
342 | return -EINVAL; | |
23dd4cce | 343 | msg_set_dest_droppable(&p_ptr->phdr, (isunrejectable != 0)); |
4323add6 | 344 | tipc_port_unlock(p_ptr); |
0e35fd5e | 345 | return 0; |
b97bf3fd PL |
346 | } |
347 | ||
c4307285 | 348 | /* |
e4a0aee4 AS |
349 | * port_build_proto_msg(): create connection protocol message for port |
350 | * | |
351 | * On entry the port must be locked and connected. | |
b97bf3fd | 352 | */ |
e4a0aee4 AS |
353 | static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr, |
354 | u32 type, u32 ack) | |
b97bf3fd PL |
355 | { |
356 | struct sk_buff *buf; | |
357 | struct tipc_msg *msg; | |
c4307285 | 358 | |
741d9eb7 | 359 | buf = tipc_buf_acquire(INT_H_SIZE); |
b97bf3fd PL |
360 | if (buf) { |
361 | msg = buf_msg(buf); | |
e4a0aee4 AS |
362 | tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE, |
363 | port_peernode(p_ptr)); | |
364 | msg_set_destport(msg, port_peerport(p_ptr)); | |
365 | msg_set_origport(msg, p_ptr->ref); | |
b97bf3fd | 366 | msg_set_msgcnt(msg, ack); |
b97bf3fd PL |
367 | } |
368 | return buf; | |
369 | } | |
370 | ||
b97bf3fd PL |
371 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
372 | { | |
373 | struct tipc_msg *msg = buf_msg(buf); | |
374 | struct sk_buff *rbuf; | |
375 | struct tipc_msg *rmsg; | |
376 | int hdr_sz; | |
7dd1bf28 | 377 | u32 imp; |
b97bf3fd | 378 | u32 data_sz = msg_data_sz(msg); |
017dac31 | 379 | u32 src_node; |
7dd1bf28 | 380 | u32 rmsg_sz; |
b97bf3fd PL |
381 | |
382 | /* discard rejected message if it shouldn't be returned to sender */ | |
76d12527 AS |
383 | if (WARN(!msg_isdata(msg), |
384 | "attempt to reject message with user=%u", msg_user(msg))) { | |
385 | dump_stack(); | |
386 | goto exit; | |
387 | } | |
acc631bf AS |
388 | if (msg_errcode(msg) || msg_dest_droppable(msg)) |
389 | goto exit; | |
b97bf3fd | 390 | |
7dd1bf28 AS |
391 | /* |
392 | * construct returned message by copying rejected message header and | |
393 | * data (or subset), then updating header fields that need adjusting | |
394 | */ | |
7dd1bf28 AS |
395 | hdr_sz = msg_hdr_sz(msg); |
396 | rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE); | |
397 | ||
398 | rbuf = tipc_buf_acquire(rmsg_sz); | |
acc631bf AS |
399 | if (rbuf == NULL) |
400 | goto exit; | |
401 | ||
b97bf3fd | 402 | rmsg = buf_msg(rbuf); |
7dd1bf28 AS |
403 | skb_copy_to_linear_data(rbuf, msg, rmsg_sz); |
404 | ||
405 | if (msg_connected(rmsg)) { | |
406 | imp = msg_importance(rmsg); | |
407 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
408 | msg_set_importance(rmsg, ++imp); | |
99c14593 | 409 | } |
7dd1bf28 AS |
410 | msg_set_non_seq(rmsg, 0); |
411 | msg_set_size(rmsg, rmsg_sz); | |
412 | msg_set_errcode(rmsg, err); | |
413 | msg_set_prevnode(rmsg, tipc_own_addr); | |
414 | msg_swap_words(rmsg, 4, 5); | |
415 | if (!msg_short(rmsg)) | |
416 | msg_swap_words(rmsg, 6, 7); | |
b97bf3fd PL |
417 | |
418 | /* send self-abort message when rejecting on a connected port */ | |
419 | if (msg_connected(msg)) { | |
23dd4cce | 420 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
421 | |
422 | if (p_ptr) { | |
dff10e9e AS |
423 | struct sk_buff *abuf = NULL; |
424 | ||
23dd4cce | 425 | if (p_ptr->connected) |
b97bf3fd | 426 | abuf = port_build_self_abort_msg(p_ptr, err); |
4323add6 | 427 | tipc_port_unlock(p_ptr); |
dff10e9e | 428 | tipc_net_route_msg(abuf); |
b97bf3fd | 429 | } |
b97bf3fd PL |
430 | } |
431 | ||
acc631bf | 432 | /* send returned message & dispose of rejected message */ |
017dac31 | 433 | src_node = msg_prevnode(msg); |
630d920d | 434 | if (in_own_node(src_node)) |
017dac31 AS |
435 | tipc_port_recv_msg(rbuf); |
436 | else | |
437 | tipc_link_send(rbuf, src_node, msg_link_selector(rmsg)); | |
acc631bf | 438 | exit: |
5f6d9123 | 439 | kfree_skb(buf); |
b97bf3fd PL |
440 | return data_sz; |
441 | } | |
442 | ||
23dd4cce | 443 | int tipc_port_reject_sections(struct tipc_port *p_ptr, struct tipc_msg *hdr, |
4323add6 | 444 | struct iovec const *msg_sect, u32 num_sect, |
26896904 | 445 | unsigned int total_len, int err) |
b97bf3fd PL |
446 | { |
447 | struct sk_buff *buf; | |
448 | int res; | |
449 | ||
26896904 | 450 | res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE, |
b97bf3fd PL |
451 | !p_ptr->user_port, &buf); |
452 | if (!buf) | |
453 | return res; | |
454 | ||
455 | return tipc_reject_msg(buf, err); | |
456 | } | |
457 | ||
458 | static void port_timeout(unsigned long ref) | |
459 | { | |
23dd4cce | 460 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 461 | struct sk_buff *buf = NULL; |
b97bf3fd | 462 | |
065fd177 AS |
463 | if (!p_ptr) |
464 | return; | |
465 | ||
23dd4cce | 466 | if (!p_ptr->connected) { |
065fd177 | 467 | tipc_port_unlock(p_ptr); |
b97bf3fd | 468 | return; |
065fd177 | 469 | } |
b97bf3fd PL |
470 | |
471 | /* Last probe answered ? */ | |
472 | if (p_ptr->probing_state == PROBING) { | |
473 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
474 | } else { | |
e4a0aee4 | 475 | buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0); |
b97bf3fd PL |
476 | p_ptr->probing_state = PROBING; |
477 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
478 | } | |
4323add6 PL |
479 | tipc_port_unlock(p_ptr); |
480 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
481 | } |
482 | ||
483 | ||
484 | static void port_handle_node_down(unsigned long ref) | |
485 | { | |
23dd4cce | 486 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
0e65967e | 487 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
488 | |
489 | if (!p_ptr) | |
490 | return; | |
491 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
492 | tipc_port_unlock(p_ptr); |
493 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
494 | } |
495 | ||
496 | ||
23dd4cce | 497 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 498 | { |
e244a915 | 499 | struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err); |
b97bf3fd | 500 | |
e244a915 AS |
501 | if (buf) { |
502 | struct tipc_msg *msg = buf_msg(buf); | |
503 | msg_swap_words(msg, 4, 5); | |
504 | msg_swap_words(msg, 6, 7); | |
505 | } | |
506 | return buf; | |
b97bf3fd PL |
507 | } |
508 | ||
509 | ||
23dd4cce | 510 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 511 | { |
e244a915 AS |
512 | struct sk_buff *buf; |
513 | struct tipc_msg *msg; | |
514 | u32 imp; | |
b97bf3fd | 515 | |
23dd4cce | 516 | if (!p_ptr->connected) |
1fc54d8f | 517 | return NULL; |
e244a915 AS |
518 | |
519 | buf = tipc_buf_acquire(BASIC_H_SIZE); | |
520 | if (buf) { | |
521 | msg = buf_msg(buf); | |
522 | memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE); | |
523 | msg_set_hdr_sz(msg, BASIC_H_SIZE); | |
524 | msg_set_size(msg, BASIC_H_SIZE); | |
525 | imp = msg_importance(msg); | |
526 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
527 | msg_set_importance(msg, ++imp); | |
528 | msg_set_errcode(msg, err); | |
529 | } | |
530 | return buf; | |
b97bf3fd PL |
531 | } |
532 | ||
4323add6 | 533 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
534 | { |
535 | struct tipc_msg *msg = buf_msg(buf); | |
1c1a551a | 536 | struct tipc_port *p_ptr; |
1fc54d8f | 537 | struct sk_buff *r_buf = NULL; |
1c1a551a AS |
538 | u32 destport = msg_destport(msg); |
539 | int wakeable; | |
540 | ||
541 | /* Validate connection */ | |
1c1a551a | 542 | p_ptr = tipc_port_lock(destport); |
f0712e86 | 543 | if (!p_ptr || !p_ptr->connected || !tipc_port_peer_msg(p_ptr, msg)) { |
f55b5640 AS |
544 | r_buf = tipc_buf_acquire(BASIC_H_SIZE); |
545 | if (r_buf) { | |
546 | msg = buf_msg(r_buf); | |
547 | tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG, | |
f0712e86 | 548 | BASIC_H_SIZE, msg_orignode(msg)); |
f55b5640 AS |
549 | msg_set_errcode(msg, TIPC_ERR_NO_PORT); |
550 | msg_set_origport(msg, destport); | |
f0712e86 | 551 | msg_set_destport(msg, msg_origport(msg)); |
f55b5640 | 552 | } |
1c1a551a AS |
553 | if (p_ptr) |
554 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
555 | goto exit; |
556 | } | |
557 | ||
1c1a551a | 558 | /* Process protocol message sent by peer */ |
1c1a551a AS |
559 | switch (msg_type(msg)) { |
560 | case CONN_ACK: | |
561 | wakeable = tipc_port_congested(p_ptr) && p_ptr->congested && | |
562 | p_ptr->wakeup; | |
563 | p_ptr->acked += msg_msgcnt(msg); | |
564 | if (!tipc_port_congested(p_ptr)) { | |
565 | p_ptr->congested = 0; | |
566 | if (wakeable) | |
567 | p_ptr->wakeup(p_ptr); | |
568 | } | |
569 | break; | |
570 | case CONN_PROBE: | |
e4a0aee4 | 571 | r_buf = port_build_proto_msg(p_ptr, CONN_PROBE_REPLY, 0); |
1c1a551a AS |
572 | break; |
573 | default: | |
574 | /* CONN_PROBE_REPLY or unrecognized - no action required */ | |
575 | break; | |
b97bf3fd PL |
576 | } |
577 | p_ptr->probing_state = CONFIRMED; | |
1c1a551a | 578 | tipc_port_unlock(p_ptr); |
b97bf3fd | 579 | exit: |
4323add6 | 580 | tipc_net_route_msg(r_buf); |
5f6d9123 | 581 | kfree_skb(buf); |
b97bf3fd PL |
582 | } |
583 | ||
23dd4cce | 584 | static void port_print(struct tipc_port *p_ptr, struct print_buf *buf, int full_id) |
b97bf3fd | 585 | { |
c4307285 | 586 | struct publication *publ; |
b97bf3fd PL |
587 | |
588 | if (full_id) | |
c4307285 | 589 | tipc_printf(buf, "<%u.%u.%u:%u>:", |
b97bf3fd | 590 | tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr), |
23dd4cce | 591 | tipc_node(tipc_own_addr), p_ptr->ref); |
b97bf3fd | 592 | else |
23dd4cce | 593 | tipc_printf(buf, "%-10u:", p_ptr->ref); |
b97bf3fd | 594 | |
23dd4cce | 595 | if (p_ptr->connected) { |
c4307285 YH |
596 | u32 dport = port_peerport(p_ptr); |
597 | u32 destnode = port_peernode(p_ptr); | |
598 | ||
599 | tipc_printf(buf, " connected to <%u.%u.%u:%u>", | |
600 | tipc_zone(destnode), tipc_cluster(destnode), | |
601 | tipc_node(destnode), dport); | |
23dd4cce | 602 | if (p_ptr->conn_type != 0) |
c4307285 | 603 | tipc_printf(buf, " via {%u,%u}", |
23dd4cce AS |
604 | p_ptr->conn_type, |
605 | p_ptr->conn_instance); | |
606 | } else if (p_ptr->published) { | |
c4307285 YH |
607 | tipc_printf(buf, " bound to"); |
608 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { | |
b97bf3fd PL |
609 | if (publ->lower == publ->upper) |
610 | tipc_printf(buf, " {%u,%u}", publ->type, | |
611 | publ->lower); | |
612 | else | |
c4307285 | 613 | tipc_printf(buf, " {%u,%u,%u}", publ->type, |
b97bf3fd | 614 | publ->lower, publ->upper); |
c4307285 YH |
615 | } |
616 | } | |
617 | tipc_printf(buf, "\n"); | |
b97bf3fd PL |
618 | } |
619 | ||
620 | #define MAX_PORT_QUERY 32768 | |
621 | ||
4323add6 | 622 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
623 | { |
624 | struct sk_buff *buf; | |
625 | struct tlv_desc *rep_tlv; | |
626 | struct print_buf pb; | |
23dd4cce | 627 | struct tipc_port *p_ptr; |
b97bf3fd PL |
628 | int str_len; |
629 | ||
4323add6 | 630 | buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY)); |
b97bf3fd PL |
631 | if (!buf) |
632 | return NULL; | |
633 | rep_tlv = (struct tlv_desc *)buf->data; | |
634 | ||
4323add6 PL |
635 | tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY); |
636 | spin_lock_bh(&tipc_port_list_lock); | |
b97bf3fd | 637 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 638 | spin_lock_bh(p_ptr->lock); |
b97bf3fd | 639 | port_print(p_ptr, &pb, 0); |
23dd4cce | 640 | spin_unlock_bh(p_ptr->lock); |
b97bf3fd | 641 | } |
4323add6 PL |
642 | spin_unlock_bh(&tipc_port_list_lock); |
643 | str_len = tipc_printbuf_validate(&pb); | |
b97bf3fd PL |
644 | |
645 | skb_put(buf, TLV_SPACE(str_len)); | |
646 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
647 | ||
648 | return buf; | |
649 | } | |
650 | ||
4323add6 | 651 | void tipc_port_reinit(void) |
b97bf3fd | 652 | { |
23dd4cce | 653 | struct tipc_port *p_ptr; |
b97bf3fd PL |
654 | struct tipc_msg *msg; |
655 | ||
4323add6 | 656 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 657 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 658 | msg = &p_ptr->phdr; |
6d4a6672 | 659 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
660 | msg_set_orignode(msg, tipc_own_addr); |
661 | } | |
4323add6 | 662 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
663 | } |
664 | ||
665 | ||
666 | /* | |
667 | * port_dispatcher_sigh(): Signal handler for messages destinated | |
668 | * to the tipc_port interface. | |
669 | */ | |
b97bf3fd PL |
670 | static void port_dispatcher_sigh(void *dummy) |
671 | { | |
672 | struct sk_buff *buf; | |
673 | ||
674 | spin_lock_bh(&queue_lock); | |
675 | buf = msg_queue_head; | |
1fc54d8f | 676 | msg_queue_head = NULL; |
b97bf3fd PL |
677 | spin_unlock_bh(&queue_lock); |
678 | ||
679 | while (buf) { | |
23dd4cce | 680 | struct tipc_port *p_ptr; |
b97bf3fd PL |
681 | struct user_port *up_ptr; |
682 | struct tipc_portid orig; | |
683 | struct tipc_name_seq dseq; | |
684 | void *usr_handle; | |
685 | int connected; | |
f0712e86 | 686 | int peer_invalid; |
b97bf3fd | 687 | int published; |
9688243b | 688 | u32 message_type; |
b97bf3fd PL |
689 | |
690 | struct sk_buff *next = buf->next; | |
691 | struct tipc_msg *msg = buf_msg(buf); | |
692 | u32 dref = msg_destport(msg); | |
c4307285 | 693 | |
9688243b AS |
694 | message_type = msg_type(msg); |
695 | if (message_type > TIPC_DIRECT_MSG) | |
696 | goto reject; /* Unsupported message type */ | |
697 | ||
4323add6 | 698 | p_ptr = tipc_port_lock(dref); |
9688243b AS |
699 | if (!p_ptr) |
700 | goto reject; /* Port deleted while msg in queue */ | |
701 | ||
b97bf3fd PL |
702 | orig.ref = msg_origport(msg); |
703 | orig.node = msg_orignode(msg); | |
704 | up_ptr = p_ptr->user_port; | |
705 | usr_handle = up_ptr->usr_handle; | |
23dd4cce | 706 | connected = p_ptr->connected; |
f0712e86 | 707 | peer_invalid = connected && !tipc_port_peer_msg(p_ptr, msg); |
23dd4cce | 708 | published = p_ptr->published; |
b97bf3fd PL |
709 | |
710 | if (unlikely(msg_errcode(msg))) | |
711 | goto err; | |
712 | ||
9688243b | 713 | switch (message_type) { |
c4307285 | 714 | |
b97bf3fd PL |
715 | case TIPC_CONN_MSG:{ |
716 | tipc_conn_msg_event cb = up_ptr->conn_msg_cb; | |
cb7ce914 | 717 | u32 dsz; |
b97bf3fd | 718 | |
4cec72c8 | 719 | tipc_port_unlock(p_ptr); |
5307e469 AS |
720 | if (unlikely(!cb)) |
721 | goto reject; | |
b97bf3fd | 722 | if (unlikely(!connected)) { |
84b07c16 | 723 | if (tipc_connect2port(dref, &orig)) |
b97bf3fd | 724 | goto reject; |
f0712e86 | 725 | } else if (peer_invalid) |
b97bf3fd | 726 | goto reject; |
cb7ce914 AS |
727 | dsz = msg_data_sz(msg); |
728 | if (unlikely(dsz && | |
729 | (++p_ptr->conn_unacked >= | |
730 | TIPC_FLOW_CONTROL_WIN))) | |
c4307285 | 731 | tipc_acknowledge(dref, |
23dd4cce | 732 | p_ptr->conn_unacked); |
b97bf3fd | 733 | skb_pull(buf, msg_hdr_sz(msg)); |
cb7ce914 | 734 | cb(usr_handle, dref, &buf, msg_data(msg), dsz); |
b97bf3fd PL |
735 | break; |
736 | } | |
737 | case TIPC_DIRECT_MSG:{ | |
738 | tipc_msg_event cb = up_ptr->msg_cb; | |
739 | ||
4cec72c8 | 740 | tipc_port_unlock(p_ptr); |
5307e469 | 741 | if (unlikely(!cb || connected)) |
b97bf3fd PL |
742 | goto reject; |
743 | skb_pull(buf, msg_hdr_sz(msg)); | |
c4307285 | 744 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
745 | msg_data_sz(msg), msg_importance(msg), |
746 | &orig); | |
747 | break; | |
748 | } | |
9688243b | 749 | case TIPC_MCAST_MSG: |
b97bf3fd PL |
750 | case TIPC_NAMED_MSG:{ |
751 | tipc_named_msg_event cb = up_ptr->named_msg_cb; | |
752 | ||
4cec72c8 | 753 | tipc_port_unlock(p_ptr); |
5307e469 | 754 | if (unlikely(!cb || connected || !published)) |
b97bf3fd PL |
755 | goto reject; |
756 | dseq.type = msg_nametype(msg); | |
757 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
758 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
759 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 760 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 761 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
762 | msg_data_sz(msg), msg_importance(msg), |
763 | &orig, &dseq); | |
764 | break; | |
765 | } | |
766 | } | |
767 | if (buf) | |
5f6d9123 | 768 | kfree_skb(buf); |
b97bf3fd PL |
769 | buf = next; |
770 | continue; | |
771 | err: | |
9688243b | 772 | switch (message_type) { |
c4307285 | 773 | |
b97bf3fd | 774 | case TIPC_CONN_MSG:{ |
c4307285 | 775 | tipc_conn_shutdown_event cb = |
b97bf3fd | 776 | up_ptr->conn_err_cb; |
b97bf3fd | 777 | |
4cec72c8 | 778 | tipc_port_unlock(p_ptr); |
f0712e86 | 779 | if (!cb || !connected || peer_invalid) |
b97bf3fd PL |
780 | break; |
781 | tipc_disconnect(dref); | |
782 | skb_pull(buf, msg_hdr_sz(msg)); | |
783 | cb(usr_handle, dref, &buf, msg_data(msg), | |
784 | msg_data_sz(msg), msg_errcode(msg)); | |
785 | break; | |
786 | } | |
787 | case TIPC_DIRECT_MSG:{ | |
788 | tipc_msg_err_event cb = up_ptr->err_cb; | |
789 | ||
4cec72c8 | 790 | tipc_port_unlock(p_ptr); |
5307e469 | 791 | if (!cb || connected) |
b97bf3fd PL |
792 | break; |
793 | skb_pull(buf, msg_hdr_sz(msg)); | |
794 | cb(usr_handle, dref, &buf, msg_data(msg), | |
795 | msg_data_sz(msg), msg_errcode(msg), &orig); | |
796 | break; | |
797 | } | |
9688243b | 798 | case TIPC_MCAST_MSG: |
b97bf3fd | 799 | case TIPC_NAMED_MSG:{ |
c4307285 | 800 | tipc_named_msg_err_event cb = |
b97bf3fd PL |
801 | up_ptr->named_err_cb; |
802 | ||
4cec72c8 | 803 | tipc_port_unlock(p_ptr); |
5307e469 | 804 | if (!cb || connected) |
b97bf3fd PL |
805 | break; |
806 | dseq.type = msg_nametype(msg); | |
807 | dseq.lower = msg_nameinst(msg); | |
9688243b AS |
808 | dseq.upper = (message_type == TIPC_NAMED_MSG) |
809 | ? dseq.lower : msg_nameupper(msg); | |
b97bf3fd | 810 | skb_pull(buf, msg_hdr_sz(msg)); |
c4307285 | 811 | cb(usr_handle, dref, &buf, msg_data(msg), |
b97bf3fd PL |
812 | msg_data_sz(msg), msg_errcode(msg), &dseq); |
813 | break; | |
814 | } | |
815 | } | |
816 | if (buf) | |
5f6d9123 | 817 | kfree_skb(buf); |
b97bf3fd PL |
818 | buf = next; |
819 | continue; | |
820 | reject: | |
821 | tipc_reject_msg(buf, TIPC_ERR_NO_PORT); | |
822 | buf = next; | |
823 | } | |
824 | } | |
825 | ||
826 | /* | |
827 | * port_dispatcher(): Dispatcher for messages destinated | |
828 | * to the tipc_port interface. Called with port locked. | |
829 | */ | |
b97bf3fd PL |
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 | /* |
617d3c7a | 846 | * Wake up port after congestion: Called with port locked |
b97bf3fd | 847 | */ |
b97bf3fd PL |
848 | static void port_wakeup_sh(unsigned long ref) |
849 | { | |
23dd4cce | 850 | struct tipc_port *p_ptr; |
b97bf3fd | 851 | struct user_port *up_ptr; |
1fc54d8f SR |
852 | tipc_continue_event cb = NULL; |
853 | void *uh = NULL; | |
b97bf3fd | 854 | |
4323add6 | 855 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
856 | if (p_ptr) { |
857 | up_ptr = p_ptr->user_port; | |
858 | if (up_ptr) { | |
859 | cb = up_ptr->continue_event_cb; | |
860 | uh = up_ptr->usr_handle; | |
861 | } | |
4323add6 | 862 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
863 | } |
864 | if (cb) | |
865 | cb(uh, ref); | |
866 | } | |
867 | ||
868 | ||
869 | static void port_wakeup(struct tipc_port *p_ptr) | |
870 | { | |
4323add6 | 871 | tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref); |
b97bf3fd PL |
872 | } |
873 | ||
874 | void tipc_acknowledge(u32 ref, u32 ack) | |
875 | { | |
23dd4cce | 876 | struct tipc_port *p_ptr; |
1fc54d8f | 877 | struct sk_buff *buf = NULL; |
b97bf3fd | 878 | |
4323add6 | 879 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
880 | if (!p_ptr) |
881 | return; | |
23dd4cce AS |
882 | if (p_ptr->connected) { |
883 | p_ptr->conn_unacked -= ack; | |
e4a0aee4 | 884 | buf = port_build_proto_msg(p_ptr, CONN_ACK, ack); |
b97bf3fd | 885 | } |
4323add6 PL |
886 | tipc_port_unlock(p_ptr); |
887 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
888 | } |
889 | ||
890 | /* | |
b0c1e928 | 891 | * tipc_createport(): user level call. |
b97bf3fd | 892 | */ |
b0c1e928 | 893 | int tipc_createport(void *usr_handle, |
c4307285 YH |
894 | unsigned int importance, |
895 | tipc_msg_err_event error_cb, | |
896 | tipc_named_msg_err_event named_error_cb, | |
897 | tipc_conn_shutdown_event conn_error_cb, | |
898 | tipc_msg_event msg_cb, | |
899 | tipc_named_msg_event named_msg_cb, | |
900 | tipc_conn_msg_event conn_msg_cb, | |
617d3c7a | 901 | tipc_continue_event continue_event_cb, /* May be zero */ |
b97bf3fd PL |
902 | u32 *portref) |
903 | { | |
904 | struct user_port *up_ptr; | |
23dd4cce | 905 | struct tipc_port *p_ptr; |
b97bf3fd | 906 | |
0da974f4 | 907 | up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC); |
a10bd924 | 908 | if (!up_ptr) { |
a75bf874 | 909 | warn("Port creation failed, no memory\n"); |
b97bf3fd PL |
910 | return -ENOMEM; |
911 | } | |
e3192690 JP |
912 | p_ptr = tipc_createport_raw(NULL, port_dispatcher, port_wakeup, |
913 | importance); | |
0ea52241 | 914 | if (!p_ptr) { |
b97bf3fd PL |
915 | kfree(up_ptr); |
916 | return -ENOMEM; | |
917 | } | |
918 | ||
919 | p_ptr->user_port = up_ptr; | |
b97bf3fd | 920 | up_ptr->usr_handle = usr_handle; |
23dd4cce | 921 | up_ptr->ref = p_ptr->ref; |
b97bf3fd PL |
922 | up_ptr->err_cb = error_cb; |
923 | up_ptr->named_err_cb = named_error_cb; | |
924 | up_ptr->conn_err_cb = conn_error_cb; | |
925 | up_ptr->msg_cb = msg_cb; | |
926 | up_ptr->named_msg_cb = named_msg_cb; | |
927 | up_ptr->conn_msg_cb = conn_msg_cb; | |
928 | up_ptr->continue_event_cb = continue_event_cb; | |
23dd4cce | 929 | *portref = p_ptr->ref; |
4323add6 | 930 | tipc_port_unlock(p_ptr); |
0e35fd5e | 931 | return 0; |
b97bf3fd PL |
932 | } |
933 | ||
b97bf3fd PL |
934 | int tipc_portimportance(u32 ref, unsigned int *importance) |
935 | { | |
23dd4cce | 936 | struct tipc_port *p_ptr; |
c4307285 | 937 | |
4323add6 | 938 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
939 | if (!p_ptr) |
940 | return -EINVAL; | |
23dd4cce | 941 | *importance = (unsigned int)msg_importance(&p_ptr->phdr); |
4cec72c8 | 942 | tipc_port_unlock(p_ptr); |
0e35fd5e | 943 | return 0; |
b97bf3fd PL |
944 | } |
945 | ||
946 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
947 | { | |
23dd4cce | 948 | struct tipc_port *p_ptr; |
b97bf3fd PL |
949 | |
950 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
951 | return -EINVAL; | |
952 | ||
4323add6 | 953 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
954 | if (!p_ptr) |
955 | return -EINVAL; | |
23dd4cce | 956 | msg_set_importance(&p_ptr->phdr, (u32)imp); |
4cec72c8 | 957 | tipc_port_unlock(p_ptr); |
0e35fd5e | 958 | return 0; |
b97bf3fd PL |
959 | } |
960 | ||
961 | ||
962 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
963 | { | |
23dd4cce | 964 | struct tipc_port *p_ptr; |
b97bf3fd PL |
965 | struct publication *publ; |
966 | u32 key; | |
967 | int res = -EINVAL; | |
968 | ||
4323add6 | 969 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
970 | if (!p_ptr) |
971 | return -EINVAL; | |
972 | ||
23dd4cce | 973 | if (p_ptr->connected) |
b97bf3fd | 974 | goto exit; |
b97bf3fd PL |
975 | key = ref + p_ptr->pub_count + 1; |
976 | if (key == ref) { | |
977 | res = -EADDRINUSE; | |
978 | goto exit; | |
979 | } | |
4323add6 | 980 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
23dd4cce | 981 | scope, p_ptr->ref, key); |
b97bf3fd PL |
982 | if (publ) { |
983 | list_add(&publ->pport_list, &p_ptr->publications); | |
984 | p_ptr->pub_count++; | |
23dd4cce | 985 | p_ptr->published = 1; |
0e35fd5e | 986 | res = 0; |
b97bf3fd PL |
987 | } |
988 | exit: | |
4323add6 | 989 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
990 | return res; |
991 | } | |
992 | ||
993 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
994 | { | |
23dd4cce | 995 | struct tipc_port *p_ptr; |
b97bf3fd PL |
996 | struct publication *publ; |
997 | struct publication *tpubl; | |
998 | int res = -EINVAL; | |
c4307285 | 999 | |
4323add6 | 1000 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1001 | if (!p_ptr) |
1002 | return -EINVAL; | |
b97bf3fd | 1003 | if (!seq) { |
c4307285 | 1004 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 1005 | &p_ptr->publications, pport_list) { |
c4307285 | 1006 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1007 | publ->ref, publ->key); |
b97bf3fd | 1008 | } |
0e35fd5e | 1009 | res = 0; |
b97bf3fd | 1010 | } else { |
c4307285 | 1011 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
1012 | &p_ptr->publications, pport_list) { |
1013 | if (publ->scope != scope) | |
1014 | continue; | |
1015 | if (publ->type != seq->type) | |
1016 | continue; | |
1017 | if (publ->lower != seq->lower) | |
1018 | continue; | |
1019 | if (publ->upper != seq->upper) | |
1020 | break; | |
c4307285 | 1021 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 1022 | publ->ref, publ->key); |
0e35fd5e | 1023 | res = 0; |
b97bf3fd PL |
1024 | break; |
1025 | } | |
1026 | } | |
1027 | if (list_empty(&p_ptr->publications)) | |
23dd4cce | 1028 | p_ptr->published = 0; |
4323add6 | 1029 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1030 | return res; |
1031 | } | |
1032 | ||
1033 | int tipc_connect2port(u32 ref, struct tipc_portid const *peer) | |
1034 | { | |
23dd4cce | 1035 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1036 | struct tipc_msg *msg; |
1037 | int res = -EINVAL; | |
1038 | ||
4323add6 | 1039 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1040 | if (!p_ptr) |
1041 | return -EINVAL; | |
23dd4cce | 1042 | if (p_ptr->published || p_ptr->connected) |
b97bf3fd PL |
1043 | goto exit; |
1044 | if (!peer->ref) | |
1045 | goto exit; | |
1046 | ||
23dd4cce | 1047 | msg = &p_ptr->phdr; |
b97bf3fd PL |
1048 | msg_set_destnode(msg, peer->node); |
1049 | msg_set_destport(msg, peer->ref); | |
b97bf3fd | 1050 | msg_set_type(msg, TIPC_CONN_MSG); |
53b94364 | 1051 | msg_set_lookup_scope(msg, 0); |
08c80e9a | 1052 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
1053 | |
1054 | p_ptr->probing_interval = PROBING_INTERVAL; | |
1055 | p_ptr->probing_state = CONFIRMED; | |
23dd4cce | 1056 | p_ptr->connected = 1; |
b97bf3fd PL |
1057 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
1058 | ||
0e65967e | 1059 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 1060 | (void *)(unsigned long)ref, |
b97bf3fd | 1061 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 1062 | res = 0; |
b97bf3fd | 1063 | exit: |
4323add6 | 1064 | tipc_port_unlock(p_ptr); |
23dd4cce | 1065 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
1066 | return res; |
1067 | } | |
1068 | ||
0c3141e9 AS |
1069 | /** |
1070 | * tipc_disconnect_port - disconnect port from peer | |
1071 | * | |
1072 | * Port must be locked. | |
1073 | */ | |
0c3141e9 AS |
1074 | int tipc_disconnect_port(struct tipc_port *tp_ptr) |
1075 | { | |
1076 | int res; | |
1077 | ||
1078 | if (tp_ptr->connected) { | |
1079 | tp_ptr->connected = 0; | |
1080 | /* let timer expire on it's own to avoid deadlock! */ | |
e3192690 | 1081 | tipc_nodesub_unsubscribe(&tp_ptr->subscription); |
0e35fd5e | 1082 | res = 0; |
0c3141e9 AS |
1083 | } else { |
1084 | res = -ENOTCONN; | |
1085 | } | |
1086 | return res; | |
1087 | } | |
1088 | ||
b97bf3fd PL |
1089 | /* |
1090 | * tipc_disconnect(): Disconnect port form peer. | |
1091 | * This is a node local operation. | |
1092 | */ | |
b97bf3fd PL |
1093 | int tipc_disconnect(u32 ref) |
1094 | { | |
23dd4cce | 1095 | struct tipc_port *p_ptr; |
0c3141e9 | 1096 | int res; |
b97bf3fd | 1097 | |
4323add6 | 1098 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1099 | if (!p_ptr) |
1100 | return -EINVAL; | |
e3192690 | 1101 | res = tipc_disconnect_port(p_ptr); |
4323add6 | 1102 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
1103 | return res; |
1104 | } | |
1105 | ||
1106 | /* | |
1107 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
1108 | */ | |
1109 | int tipc_shutdown(u32 ref) | |
1110 | { | |
23dd4cce | 1111 | struct tipc_port *p_ptr; |
1fc54d8f | 1112 | struct sk_buff *buf = NULL; |
b97bf3fd | 1113 | |
4323add6 | 1114 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
1115 | if (!p_ptr) |
1116 | return -EINVAL; | |
1117 | ||
e244a915 | 1118 | buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN); |
4323add6 PL |
1119 | tipc_port_unlock(p_ptr); |
1120 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
1121 | return tipc_disconnect(ref); |
1122 | } | |
1123 | ||
9b641251 AS |
1124 | /** |
1125 | * tipc_port_recv_msg - receive message from lower layer and deliver to port user | |
1126 | */ | |
9b641251 AS |
1127 | int tipc_port_recv_msg(struct sk_buff *buf) |
1128 | { | |
1129 | struct tipc_port *p_ptr; | |
1130 | struct tipc_msg *msg = buf_msg(buf); | |
1131 | u32 destport = msg_destport(msg); | |
1132 | u32 dsz = msg_data_sz(msg); | |
1133 | u32 err; | |
1134 | ||
1135 | /* forward unresolved named message */ | |
1136 | if (unlikely(!destport)) { | |
1137 | tipc_net_route_msg(buf); | |
1138 | return dsz; | |
1139 | } | |
1140 | ||
1141 | /* validate destination & pass to port, otherwise reject message */ | |
1142 | p_ptr = tipc_port_lock(destport); | |
1143 | if (likely(p_ptr)) { | |
9b641251 AS |
1144 | err = p_ptr->dispatcher(p_ptr, buf); |
1145 | tipc_port_unlock(p_ptr); | |
1146 | if (likely(!err)) | |
1147 | return dsz; | |
1148 | } else { | |
1149 | err = TIPC_ERR_NO_PORT; | |
1150 | } | |
f0712e86 | 1151 | |
9b641251 AS |
1152 | return tipc_reject_msg(buf, err); |
1153 | } | |
1154 | ||
b97bf3fd | 1155 | /* |
4323add6 | 1156 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
1157 | * message for this node. |
1158 | */ | |
23dd4cce | 1159 | static int tipc_port_recv_sections(struct tipc_port *sender, unsigned int num_sect, |
26896904 AS |
1160 | struct iovec const *msg_sect, |
1161 | unsigned int total_len) | |
b97bf3fd PL |
1162 | { |
1163 | struct sk_buff *buf; | |
1164 | int res; | |
c4307285 | 1165 | |
26896904 | 1166 | res = tipc_msg_build(&sender->phdr, msg_sect, num_sect, total_len, |
b97bf3fd PL |
1167 | MAX_MSG_SIZE, !sender->user_port, &buf); |
1168 | if (likely(buf)) | |
4323add6 | 1169 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
1170 | return res; |
1171 | } | |
1172 | ||
1173 | /** | |
1174 | * tipc_send - send message sections on connection | |
1175 | */ | |
26896904 AS |
1176 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect, |
1177 | unsigned int total_len) | |
b97bf3fd | 1178 | { |
23dd4cce | 1179 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1180 | u32 destnode; |
1181 | int res; | |
1182 | ||
4323add6 | 1183 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1184 | if (!p_ptr || !p_ptr->connected) |
b97bf3fd PL |
1185 | return -EINVAL; |
1186 | ||
23dd4cce | 1187 | p_ptr->congested = 1; |
4323add6 | 1188 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd | 1189 | destnode = port_peernode(p_ptr); |
8a55fe74 | 1190 | if (likely(!in_own_node(destnode))) |
4323add6 | 1191 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
26896904 | 1192 | total_len, destnode); |
b97bf3fd | 1193 | else |
26896904 AS |
1194 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, |
1195 | total_len); | |
b97bf3fd PL |
1196 | |
1197 | if (likely(res != -ELINKCONG)) { | |
23dd4cce | 1198 | p_ptr->congested = 0; |
cb7ce914 AS |
1199 | if (res > 0) |
1200 | p_ptr->sent++; | |
b97bf3fd PL |
1201 | return res; |
1202 | } | |
1203 | } | |
1204 | if (port_unreliable(p_ptr)) { | |
23dd4cce | 1205 | p_ptr->congested = 0; |
26896904 | 1206 | return total_len; |
b97bf3fd PL |
1207 | } |
1208 | return -ELINKCONG; | |
1209 | } | |
1210 | ||
b97bf3fd | 1211 | /** |
12bae479 | 1212 | * tipc_send2name - send message sections to port name |
b97bf3fd | 1213 | */ |
12bae479 | 1214 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
26896904 AS |
1215 | unsigned int num_sect, struct iovec const *msg_sect, |
1216 | unsigned int total_len) | |
b97bf3fd | 1217 | { |
23dd4cce | 1218 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1219 | struct tipc_msg *msg; |
1220 | u32 destnode = domain; | |
9ccc2eb4 | 1221 | u32 destport; |
b97bf3fd PL |
1222 | int res; |
1223 | ||
4323add6 | 1224 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1225 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1226 | return -EINVAL; |
1227 | ||
23dd4cce | 1228 | msg = &p_ptr->phdr; |
b97bf3fd | 1229 | msg_set_type(msg, TIPC_NAMED_MSG); |
741d9eb7 | 1230 | msg_set_hdr_sz(msg, NAMED_H_SIZE); |
b97bf3fd PL |
1231 | msg_set_nametype(msg, name->type); |
1232 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 1233 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 1234 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
1235 | msg_set_destnode(msg, destnode); |
1236 | msg_set_destport(msg, destport); | |
1237 | ||
bc9f8143 | 1238 | if (likely(destport || destnode)) { |
8a55fe74 | 1239 | if (likely(in_own_node(destnode))) |
cb7ce914 | 1240 | res = tipc_port_recv_sections(p_ptr, num_sect, |
26896904 | 1241 | msg_sect, total_len); |
b8f683d1 | 1242 | else if (tipc_own_addr) |
cb7ce914 | 1243 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, |
26896904 AS |
1244 | num_sect, total_len, |
1245 | destnode); | |
b8f683d1 AS |
1246 | else |
1247 | res = tipc_port_reject_sections(p_ptr, msg, msg_sect, | |
1248 | num_sect, total_len, | |
1249 | TIPC_ERR_NO_NODE); | |
cb7ce914 AS |
1250 | if (likely(res != -ELINKCONG)) { |
1251 | if (res > 0) | |
1252 | p_ptr->sent++; | |
b97bf3fd | 1253 | return res; |
cb7ce914 | 1254 | } |
b97bf3fd | 1255 | if (port_unreliable(p_ptr)) { |
26896904 | 1256 | return total_len; |
b97bf3fd PL |
1257 | } |
1258 | return -ELINKCONG; | |
1259 | } | |
c4307285 | 1260 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
26896904 | 1261 | total_len, TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1262 | } |
1263 | ||
1264 | /** | |
12bae479 | 1265 | * tipc_send2port - send message sections to port identity |
b97bf3fd | 1266 | */ |
12bae479 | 1267 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
26896904 AS |
1268 | unsigned int num_sect, struct iovec const *msg_sect, |
1269 | unsigned int total_len) | |
b97bf3fd | 1270 | { |
23dd4cce | 1271 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1272 | struct tipc_msg *msg; |
1273 | int res; | |
1274 | ||
4323add6 | 1275 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1276 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1277 | return -EINVAL; |
1278 | ||
23dd4cce | 1279 | msg = &p_ptr->phdr; |
b97bf3fd | 1280 | msg_set_type(msg, TIPC_DIRECT_MSG); |
53b94364 | 1281 | msg_set_lookup_scope(msg, 0); |
b97bf3fd PL |
1282 | msg_set_destnode(msg, dest->node); |
1283 | msg_set_destport(msg, dest->ref); | |
741d9eb7 | 1284 | msg_set_hdr_sz(msg, BASIC_H_SIZE); |
cb7ce914 | 1285 | |
8a55fe74 | 1286 | if (in_own_node(dest->node)) |
26896904 AS |
1287 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, |
1288 | total_len); | |
b8f683d1 | 1289 | else if (tipc_own_addr) |
cb7ce914 | 1290 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
26896904 | 1291 | total_len, dest->node); |
b8f683d1 AS |
1292 | else |
1293 | res = tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, | |
1294 | total_len, TIPC_ERR_NO_NODE); | |
cb7ce914 AS |
1295 | if (likely(res != -ELINKCONG)) { |
1296 | if (res > 0) | |
1297 | p_ptr->sent++; | |
b97bf3fd | 1298 | return res; |
cb7ce914 | 1299 | } |
b97bf3fd | 1300 | if (port_unreliable(p_ptr)) { |
26896904 | 1301 | return total_len; |
b97bf3fd PL |
1302 | } |
1303 | return -ELINKCONG; | |
1304 | } | |
1305 | ||
c4307285 | 1306 | /** |
12bae479 | 1307 | * tipc_send_buf2port - send message buffer to port identity |
b97bf3fd | 1308 | */ |
12bae479 AS |
1309 | int tipc_send_buf2port(u32 ref, struct tipc_portid const *dest, |
1310 | struct sk_buff *buf, unsigned int dsz) | |
b97bf3fd | 1311 | { |
23dd4cce | 1312 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1313 | struct tipc_msg *msg; |
1314 | int res; | |
1315 | ||
23dd4cce AS |
1316 | p_ptr = (struct tipc_port *)tipc_ref_deref(ref); |
1317 | if (!p_ptr || p_ptr->connected) | |
b97bf3fd PL |
1318 | return -EINVAL; |
1319 | ||
23dd4cce | 1320 | msg = &p_ptr->phdr; |
b97bf3fd | 1321 | msg_set_type(msg, TIPC_DIRECT_MSG); |
b97bf3fd PL |
1322 | msg_set_destnode(msg, dest->node); |
1323 | msg_set_destport(msg, dest->ref); | |
741d9eb7 AS |
1324 | msg_set_hdr_sz(msg, BASIC_H_SIZE); |
1325 | msg_set_size(msg, BASIC_H_SIZE + dsz); | |
1326 | if (skb_cow(buf, BASIC_H_SIZE)) | |
b97bf3fd PL |
1327 | return -ENOMEM; |
1328 | ||
741d9eb7 AS |
1329 | skb_push(buf, BASIC_H_SIZE); |
1330 | skb_copy_to_linear_data(buf, msg, BASIC_H_SIZE); | |
cb7ce914 | 1331 | |
8a55fe74 | 1332 | if (in_own_node(dest->node)) |
cb7ce914 AS |
1333 | res = tipc_port_recv_msg(buf); |
1334 | else | |
1335 | res = tipc_send_buf_fast(buf, dest->node); | |
1336 | if (likely(res != -ELINKCONG)) { | |
1337 | if (res > 0) | |
1338 | p_ptr->sent++; | |
b97bf3fd | 1339 | return res; |
cb7ce914 | 1340 | } |
b97bf3fd PL |
1341 | if (port_unreliable(p_ptr)) |
1342 | return dsz; | |
1343 | return -ELINKCONG; | |
1344 | } |