Commit | Line | Data |
---|---|---|
b97bf3fd PL |
1 | /* |
2 | * net/tipc/port.c: TIPC port code | |
c4307285 | 3 | * |
05646c91 | 4 | * Copyright (c) 1992-2007, Ericsson AB |
198d73b8 | 5 | * Copyright (c) 2004-2008, 2010-2013, 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 | ||
34af946a | 49 | DEFINE_SPINLOCK(tipc_port_list_lock); |
b97bf3fd | 50 | |
4323add6 | 51 | static LIST_HEAD(ports); |
b97bf3fd | 52 | static void port_handle_node_down(unsigned long ref); |
23dd4cce AS |
53 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *, u32 err); |
54 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *, u32 err); | |
b97bf3fd PL |
55 | static void port_timeout(unsigned long ref); |
56 | ||
57 | ||
872f24db | 58 | static u32 port_peernode(struct tipc_port *p_ptr) |
b97bf3fd | 59 | { |
23dd4cce | 60 | return msg_destnode(&p_ptr->phdr); |
b97bf3fd PL |
61 | } |
62 | ||
872f24db | 63 | static u32 port_peerport(struct tipc_port *p_ptr) |
b97bf3fd | 64 | { |
23dd4cce | 65 | return msg_destport(&p_ptr->phdr); |
b97bf3fd PL |
66 | } |
67 | ||
2c53040f | 68 | /** |
f0712e86 AS |
69 | * tipc_port_peer_msg - verify message was sent by connected port's peer |
70 | * | |
71 | * Handles cases where the node's network address has changed from | |
72 | * the default of <0.0.0> to its configured setting. | |
73 | */ | |
f0712e86 AS |
74 | int tipc_port_peer_msg(struct tipc_port *p_ptr, struct tipc_msg *msg) |
75 | { | |
76 | u32 peernode; | |
77 | u32 orignode; | |
78 | ||
79 | if (msg_origport(msg) != port_peerport(p_ptr)) | |
80 | return 0; | |
81 | ||
82 | orignode = msg_orignode(msg); | |
83 | peernode = port_peernode(p_ptr); | |
84 | return (orignode == peernode) || | |
85 | (!orignode && (peernode == tipc_own_addr)) || | |
86 | (!peernode && (orignode == tipc_own_addr)); | |
87 | } | |
88 | ||
b97bf3fd PL |
89 | /** |
90 | * tipc_multicast - send a multicast message to local and remote destinations | |
91 | */ | |
38f232ea | 92 | int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, |
9446b87a | 93 | struct iovec const *msg_sect, unsigned int len) |
b97bf3fd PL |
94 | { |
95 | struct tipc_msg *hdr; | |
96 | struct sk_buff *buf; | |
97 | struct sk_buff *ibuf = NULL; | |
4584310b | 98 | struct tipc_port_list dports = {0, NULL, }; |
23dd4cce | 99 | struct tipc_port *oport = tipc_port_deref(ref); |
b97bf3fd PL |
100 | int ext_targets; |
101 | int res; | |
102 | ||
103 | if (unlikely(!oport)) | |
104 | return -EINVAL; | |
105 | ||
106 | /* Create multicast message */ | |
23dd4cce | 107 | hdr = &oport->phdr; |
b97bf3fd | 108 | msg_set_type(hdr, TIPC_MCAST_MSG); |
53b94364 | 109 | msg_set_lookup_scope(hdr, TIPC_CLUSTER_SCOPE); |
7462b9e9 AS |
110 | msg_set_destport(hdr, 0); |
111 | msg_set_destnode(hdr, 0); | |
b97bf3fd PL |
112 | msg_set_nametype(hdr, seq->type); |
113 | msg_set_namelower(hdr, seq->lower); | |
114 | msg_set_nameupper(hdr, seq->upper); | |
115 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | |
9446b87a | 116 | res = tipc_msg_build(hdr, msg_sect, len, MAX_MSG_SIZE, &buf); |
b97bf3fd PL |
117 | if (unlikely(!buf)) |
118 | return res; | |
119 | ||
120 | /* Figure out where to send multicast message */ | |
4323add6 PL |
121 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
122 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
123 | |
124 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
125 | if (ext_targets) { |
126 | if (dports.count != 0) { | |
127 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
128 | if (ibuf == NULL) { | |
4323add6 | 129 | tipc_port_list_free(&dports); |
5f6d9123 | 130 | kfree_skb(buf); |
b97bf3fd PL |
131 | return -ENOMEM; |
132 | } | |
133 | } | |
4323add6 | 134 | res = tipc_bclink_send_msg(buf); |
a016892c | 135 | if ((res < 0) && (dports.count != 0)) |
5f6d9123 | 136 | kfree_skb(ibuf); |
b97bf3fd PL |
137 | } else { |
138 | ibuf = buf; | |
139 | } | |
140 | ||
141 | if (res >= 0) { | |
142 | if (ibuf) | |
4323add6 | 143 | tipc_port_recv_mcast(ibuf, &dports); |
b97bf3fd | 144 | } else { |
4323add6 | 145 | tipc_port_list_free(&dports); |
b97bf3fd PL |
146 | } |
147 | return res; | |
148 | } | |
149 | ||
150 | /** | |
4323add6 | 151 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
c4307285 | 152 | * |
b97bf3fd PL |
153 | * If there is no port list, perform a lookup to create one |
154 | */ | |
4584310b | 155 | void tipc_port_recv_mcast(struct sk_buff *buf, struct tipc_port_list *dp) |
b97bf3fd | 156 | { |
0e65967e | 157 | struct tipc_msg *msg; |
4584310b PG |
158 | struct tipc_port_list dports = {0, NULL, }; |
159 | struct tipc_port_list *item = dp; | |
b97bf3fd PL |
160 | int cnt = 0; |
161 | ||
b97bf3fd PL |
162 | msg = buf_msg(buf); |
163 | ||
164 | /* Create destination port list, if one wasn't supplied */ | |
b97bf3fd | 165 | if (dp == NULL) { |
4323add6 | 166 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
167 | msg_namelower(msg), |
168 | msg_nameupper(msg), | |
169 | TIPC_CLUSTER_SCOPE, | |
170 | &dports); | |
171 | item = dp = &dports; | |
172 | } | |
173 | ||
174 | /* Deliver a copy of message to each destination port */ | |
b97bf3fd | 175 | if (dp->count != 0) { |
7f47f5c7 | 176 | msg_set_destnode(msg, tipc_own_addr); |
b97bf3fd PL |
177 | if (dp->count == 1) { |
178 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
179 | tipc_port_recv_msg(buf); |
180 | tipc_port_list_free(dp); | |
b97bf3fd PL |
181 | return; |
182 | } | |
183 | for (; cnt < dp->count; cnt++) { | |
184 | int index = cnt % PLSIZE; | |
185 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
186 | ||
187 | if (b == NULL) { | |
2cf8aa19 | 188 | pr_warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
189 | goto exit; |
190 | } | |
a016892c | 191 | if ((index == 0) && (cnt != 0)) |
b97bf3fd | 192 | item = item->next; |
0e65967e | 193 | msg_set_destport(buf_msg(b), item->ports[index]); |
4323add6 | 194 | tipc_port_recv_msg(b); |
b97bf3fd PL |
195 | } |
196 | } | |
197 | exit: | |
5f6d9123 | 198 | kfree_skb(buf); |
4323add6 | 199 | tipc_port_list_free(dp); |
b97bf3fd PL |
200 | } |
201 | ||
202 | /** | |
3c5db8e4 | 203 | * tipc_createport - create a generic TIPC port |
c4307285 | 204 | * |
0ea52241 | 205 | * Returns pointer to (locked) TIPC port, or NULL if unable to create it |
b97bf3fd | 206 | */ |
c0fee8ac | 207 | struct tipc_port *tipc_createport(struct sock *sk, |
ae8509c4 PG |
208 | u32 (*dispatcher)(struct tipc_port *, |
209 | struct sk_buff *), | |
210 | void (*wakeup)(struct tipc_port *), | |
211 | const u32 importance) | |
b97bf3fd | 212 | { |
23dd4cce | 213 | struct tipc_port *p_ptr; |
b97bf3fd PL |
214 | struct tipc_msg *msg; |
215 | u32 ref; | |
216 | ||
0da974f4 | 217 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 | 218 | if (!p_ptr) { |
2cf8aa19 | 219 | pr_warn("Port creation failed, no memory\n"); |
0ea52241 | 220 | return NULL; |
b97bf3fd | 221 | } |
23dd4cce | 222 | ref = tipc_ref_acquire(p_ptr, &p_ptr->lock); |
b97bf3fd | 223 | if (!ref) { |
2cf8aa19 | 224 | pr_warn("Port creation failed, ref. table exhausted\n"); |
b97bf3fd | 225 | kfree(p_ptr); |
0ea52241 | 226 | return NULL; |
b97bf3fd PL |
227 | } |
228 | ||
c0fee8ac | 229 | p_ptr->sk = sk; |
23dd4cce AS |
230 | p_ptr->max_pkt = MAX_PKT_DEFAULT; |
231 | p_ptr->ref = ref; | |
b97bf3fd PL |
232 | INIT_LIST_HEAD(&p_ptr->wait_list); |
233 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd PL |
234 | p_ptr->dispatcher = dispatcher; |
235 | p_ptr->wakeup = wakeup; | |
b97bf3fd | 236 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
b97bf3fd PL |
237 | INIT_LIST_HEAD(&p_ptr->publications); |
238 | INIT_LIST_HEAD(&p_ptr->port_list); | |
f21536d1 AS |
239 | |
240 | /* | |
241 | * Must hold port list lock while initializing message header template | |
242 | * to ensure a change to node's own network address doesn't result | |
243 | * in template containing out-dated network address information | |
244 | */ | |
f21536d1 AS |
245 | spin_lock_bh(&tipc_port_list_lock); |
246 | msg = &p_ptr->phdr; | |
247 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0); | |
248 | msg_set_origport(msg, ref); | |
b97bf3fd | 249 | list_add_tail(&p_ptr->port_list, &ports); |
4323add6 | 250 | spin_unlock_bh(&tipc_port_list_lock); |
23dd4cce | 251 | return p_ptr; |
b97bf3fd PL |
252 | } |
253 | ||
254 | int tipc_deleteport(u32 ref) | |
255 | { | |
23dd4cce | 256 | struct tipc_port *p_ptr; |
1fc54d8f | 257 | struct sk_buff *buf = NULL; |
b97bf3fd | 258 | |
1fc54d8f | 259 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 260 | p_ptr = tipc_port_lock(ref); |
c4307285 | 261 | if (!p_ptr) |
b97bf3fd PL |
262 | return -EINVAL; |
263 | ||
4323add6 PL |
264 | tipc_ref_discard(ref); |
265 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
266 | |
267 | k_cancel_timer(&p_ptr->timer); | |
23dd4cce | 268 | if (p_ptr->connected) { |
b97bf3fd | 269 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
4323add6 | 270 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd | 271 | } |
b97bf3fd | 272 | |
4323add6 | 273 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
274 | list_del(&p_ptr->port_list); |
275 | list_del(&p_ptr->wait_list); | |
4323add6 | 276 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
277 | k_term_timer(&p_ptr->timer); |
278 | kfree(p_ptr); | |
4323add6 | 279 | tipc_net_route_msg(buf); |
0e35fd5e | 280 | return 0; |
b97bf3fd PL |
281 | } |
282 | ||
23dd4cce | 283 | static int port_unreliable(struct tipc_port *p_ptr) |
b97bf3fd | 284 | { |
23dd4cce | 285 | return msg_src_droppable(&p_ptr->phdr); |
b97bf3fd PL |
286 | } |
287 | ||
288 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
289 | { | |
23dd4cce | 290 | struct tipc_port *p_ptr; |
c4307285 | 291 | |
4323add6 | 292 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
293 | if (!p_ptr) |
294 | return -EINVAL; | |
295 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 296 | tipc_port_unlock(p_ptr); |
0e35fd5e | 297 | return 0; |
b97bf3fd PL |
298 | } |
299 | ||
300 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
301 | { | |
23dd4cce | 302 | struct tipc_port *p_ptr; |
c4307285 | 303 | |
4323add6 | 304 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
305 | if (!p_ptr) |
306 | return -EINVAL; | |
23dd4cce | 307 | msg_set_src_droppable(&p_ptr->phdr, (isunreliable != 0)); |
4323add6 | 308 | tipc_port_unlock(p_ptr); |
0e35fd5e | 309 | return 0; |
b97bf3fd PL |
310 | } |
311 | ||
23dd4cce | 312 | static int port_unreturnable(struct tipc_port *p_ptr) |
b97bf3fd | 313 | { |
23dd4cce | 314 | return msg_dest_droppable(&p_ptr->phdr); |
b97bf3fd PL |
315 | } |
316 | ||
317 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
318 | { | |
23dd4cce | 319 | struct tipc_port *p_ptr; |
c4307285 | 320 | |
4323add6 | 321 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
322 | if (!p_ptr) |
323 | return -EINVAL; | |
324 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 325 | tipc_port_unlock(p_ptr); |
0e35fd5e | 326 | return 0; |
b97bf3fd PL |
327 | } |
328 | ||
329 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
330 | { | |
23dd4cce | 331 | struct tipc_port *p_ptr; |
c4307285 | 332 | |
4323add6 | 333 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
334 | if (!p_ptr) |
335 | return -EINVAL; | |
23dd4cce | 336 | msg_set_dest_droppable(&p_ptr->phdr, (isunrejectable != 0)); |
4323add6 | 337 | tipc_port_unlock(p_ptr); |
0e35fd5e | 338 | return 0; |
b97bf3fd PL |
339 | } |
340 | ||
c4307285 | 341 | /* |
e4a0aee4 AS |
342 | * port_build_proto_msg(): create connection protocol message for port |
343 | * | |
344 | * On entry the port must be locked and connected. | |
b97bf3fd | 345 | */ |
e4a0aee4 AS |
346 | static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr, |
347 | u32 type, u32 ack) | |
b97bf3fd PL |
348 | { |
349 | struct sk_buff *buf; | |
350 | struct tipc_msg *msg; | |
c4307285 | 351 | |
741d9eb7 | 352 | buf = tipc_buf_acquire(INT_H_SIZE); |
b97bf3fd PL |
353 | if (buf) { |
354 | msg = buf_msg(buf); | |
e4a0aee4 AS |
355 | tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE, |
356 | port_peernode(p_ptr)); | |
357 | msg_set_destport(msg, port_peerport(p_ptr)); | |
358 | msg_set_origport(msg, p_ptr->ref); | |
b97bf3fd | 359 | msg_set_msgcnt(msg, ack); |
b97bf3fd PL |
360 | } |
361 | return buf; | |
362 | } | |
363 | ||
b97bf3fd PL |
364 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
365 | { | |
366 | struct tipc_msg *msg = buf_msg(buf); | |
367 | struct sk_buff *rbuf; | |
368 | struct tipc_msg *rmsg; | |
369 | int hdr_sz; | |
7dd1bf28 | 370 | u32 imp; |
b97bf3fd | 371 | u32 data_sz = msg_data_sz(msg); |
017dac31 | 372 | u32 src_node; |
7dd1bf28 | 373 | u32 rmsg_sz; |
b97bf3fd PL |
374 | |
375 | /* discard rejected message if it shouldn't be returned to sender */ | |
76d12527 AS |
376 | if (WARN(!msg_isdata(msg), |
377 | "attempt to reject message with user=%u", msg_user(msg))) { | |
378 | dump_stack(); | |
379 | goto exit; | |
380 | } | |
acc631bf AS |
381 | if (msg_errcode(msg) || msg_dest_droppable(msg)) |
382 | goto exit; | |
b97bf3fd | 383 | |
7dd1bf28 AS |
384 | /* |
385 | * construct returned message by copying rejected message header and | |
386 | * data (or subset), then updating header fields that need adjusting | |
387 | */ | |
7dd1bf28 AS |
388 | hdr_sz = msg_hdr_sz(msg); |
389 | rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE); | |
390 | ||
391 | rbuf = tipc_buf_acquire(rmsg_sz); | |
acc631bf AS |
392 | if (rbuf == NULL) |
393 | goto exit; | |
394 | ||
b97bf3fd | 395 | rmsg = buf_msg(rbuf); |
7dd1bf28 AS |
396 | skb_copy_to_linear_data(rbuf, msg, rmsg_sz); |
397 | ||
398 | if (msg_connected(rmsg)) { | |
399 | imp = msg_importance(rmsg); | |
400 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
401 | msg_set_importance(rmsg, ++imp); | |
99c14593 | 402 | } |
7dd1bf28 AS |
403 | msg_set_non_seq(rmsg, 0); |
404 | msg_set_size(rmsg, rmsg_sz); | |
405 | msg_set_errcode(rmsg, err); | |
406 | msg_set_prevnode(rmsg, tipc_own_addr); | |
407 | msg_swap_words(rmsg, 4, 5); | |
408 | if (!msg_short(rmsg)) | |
409 | msg_swap_words(rmsg, 6, 7); | |
b97bf3fd PL |
410 | |
411 | /* send self-abort message when rejecting on a connected port */ | |
412 | if (msg_connected(msg)) { | |
23dd4cce | 413 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
414 | |
415 | if (p_ptr) { | |
dff10e9e AS |
416 | struct sk_buff *abuf = NULL; |
417 | ||
23dd4cce | 418 | if (p_ptr->connected) |
b97bf3fd | 419 | abuf = port_build_self_abort_msg(p_ptr, err); |
4323add6 | 420 | tipc_port_unlock(p_ptr); |
dff10e9e | 421 | tipc_net_route_msg(abuf); |
b97bf3fd | 422 | } |
b97bf3fd PL |
423 | } |
424 | ||
acc631bf | 425 | /* send returned message & dispose of rejected message */ |
017dac31 | 426 | src_node = msg_prevnode(msg); |
630d920d | 427 | if (in_own_node(src_node)) |
017dac31 AS |
428 | tipc_port_recv_msg(rbuf); |
429 | else | |
430 | tipc_link_send(rbuf, src_node, msg_link_selector(rmsg)); | |
acc631bf | 431 | exit: |
5f6d9123 | 432 | kfree_skb(buf); |
b97bf3fd PL |
433 | return data_sz; |
434 | } | |
435 | ||
23dd4cce | 436 | int tipc_port_reject_sections(struct tipc_port *p_ptr, struct tipc_msg *hdr, |
9446b87a YX |
437 | struct iovec const *msg_sect, unsigned int len, |
438 | int err) | |
b97bf3fd PL |
439 | { |
440 | struct sk_buff *buf; | |
441 | int res; | |
442 | ||
9446b87a | 443 | res = tipc_msg_build(hdr, msg_sect, len, MAX_MSG_SIZE, &buf); |
b97bf3fd PL |
444 | if (!buf) |
445 | return res; | |
446 | ||
447 | return tipc_reject_msg(buf, err); | |
448 | } | |
449 | ||
450 | static void port_timeout(unsigned long ref) | |
451 | { | |
23dd4cce | 452 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 453 | struct sk_buff *buf = NULL; |
b97bf3fd | 454 | |
065fd177 AS |
455 | if (!p_ptr) |
456 | return; | |
457 | ||
23dd4cce | 458 | if (!p_ptr->connected) { |
065fd177 | 459 | tipc_port_unlock(p_ptr); |
b97bf3fd | 460 | return; |
065fd177 | 461 | } |
b97bf3fd PL |
462 | |
463 | /* Last probe answered ? */ | |
464 | if (p_ptr->probing_state == PROBING) { | |
465 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
466 | } else { | |
e4a0aee4 | 467 | buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0); |
b97bf3fd PL |
468 | p_ptr->probing_state = PROBING; |
469 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
470 | } | |
4323add6 PL |
471 | tipc_port_unlock(p_ptr); |
472 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
473 | } |
474 | ||
475 | ||
476 | static void port_handle_node_down(unsigned long ref) | |
477 | { | |
23dd4cce | 478 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
0e65967e | 479 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
480 | |
481 | if (!p_ptr) | |
482 | return; | |
483 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
484 | tipc_port_unlock(p_ptr); |
485 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
486 | } |
487 | ||
488 | ||
23dd4cce | 489 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 490 | { |
e244a915 | 491 | struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err); |
b97bf3fd | 492 | |
e244a915 AS |
493 | if (buf) { |
494 | struct tipc_msg *msg = buf_msg(buf); | |
495 | msg_swap_words(msg, 4, 5); | |
496 | msg_swap_words(msg, 6, 7); | |
497 | } | |
498 | return buf; | |
b97bf3fd PL |
499 | } |
500 | ||
501 | ||
23dd4cce | 502 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 503 | { |
e244a915 AS |
504 | struct sk_buff *buf; |
505 | struct tipc_msg *msg; | |
506 | u32 imp; | |
b97bf3fd | 507 | |
23dd4cce | 508 | if (!p_ptr->connected) |
1fc54d8f | 509 | return NULL; |
e244a915 AS |
510 | |
511 | buf = tipc_buf_acquire(BASIC_H_SIZE); | |
512 | if (buf) { | |
513 | msg = buf_msg(buf); | |
514 | memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE); | |
515 | msg_set_hdr_sz(msg, BASIC_H_SIZE); | |
516 | msg_set_size(msg, BASIC_H_SIZE); | |
517 | imp = msg_importance(msg); | |
518 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
519 | msg_set_importance(msg, ++imp); | |
520 | msg_set_errcode(msg, err); | |
521 | } | |
522 | return buf; | |
b97bf3fd PL |
523 | } |
524 | ||
4323add6 | 525 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
526 | { |
527 | struct tipc_msg *msg = buf_msg(buf); | |
1c1a551a | 528 | struct tipc_port *p_ptr; |
1fc54d8f | 529 | struct sk_buff *r_buf = NULL; |
1c1a551a AS |
530 | u32 destport = msg_destport(msg); |
531 | int wakeable; | |
532 | ||
533 | /* Validate connection */ | |
1c1a551a | 534 | p_ptr = tipc_port_lock(destport); |
f0712e86 | 535 | if (!p_ptr || !p_ptr->connected || !tipc_port_peer_msg(p_ptr, msg)) { |
f55b5640 AS |
536 | r_buf = tipc_buf_acquire(BASIC_H_SIZE); |
537 | if (r_buf) { | |
538 | msg = buf_msg(r_buf); | |
539 | tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG, | |
f0712e86 | 540 | BASIC_H_SIZE, msg_orignode(msg)); |
f55b5640 AS |
541 | msg_set_errcode(msg, TIPC_ERR_NO_PORT); |
542 | msg_set_origport(msg, destport); | |
f0712e86 | 543 | msg_set_destport(msg, msg_origport(msg)); |
f55b5640 | 544 | } |
1c1a551a AS |
545 | if (p_ptr) |
546 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
547 | goto exit; |
548 | } | |
549 | ||
1c1a551a | 550 | /* Process protocol message sent by peer */ |
1c1a551a AS |
551 | switch (msg_type(msg)) { |
552 | case CONN_ACK: | |
553 | wakeable = tipc_port_congested(p_ptr) && p_ptr->congested && | |
554 | p_ptr->wakeup; | |
555 | p_ptr->acked += msg_msgcnt(msg); | |
556 | if (!tipc_port_congested(p_ptr)) { | |
557 | p_ptr->congested = 0; | |
558 | if (wakeable) | |
559 | p_ptr->wakeup(p_ptr); | |
560 | } | |
561 | break; | |
562 | case CONN_PROBE: | |
e4a0aee4 | 563 | r_buf = port_build_proto_msg(p_ptr, CONN_PROBE_REPLY, 0); |
1c1a551a AS |
564 | break; |
565 | default: | |
566 | /* CONN_PROBE_REPLY or unrecognized - no action required */ | |
567 | break; | |
b97bf3fd PL |
568 | } |
569 | p_ptr->probing_state = CONFIRMED; | |
1c1a551a | 570 | tipc_port_unlock(p_ptr); |
b97bf3fd | 571 | exit: |
4323add6 | 572 | tipc_net_route_msg(r_buf); |
5f6d9123 | 573 | kfree_skb(buf); |
b97bf3fd PL |
574 | } |
575 | ||
dc1aed37 | 576 | static int port_print(struct tipc_port *p_ptr, char *buf, int len, int full_id) |
b97bf3fd | 577 | { |
c4307285 | 578 | struct publication *publ; |
dc1aed37 | 579 | int ret; |
b97bf3fd PL |
580 | |
581 | if (full_id) | |
dc1aed37 EH |
582 | ret = tipc_snprintf(buf, len, "<%u.%u.%u:%u>:", |
583 | tipc_zone(tipc_own_addr), | |
584 | tipc_cluster(tipc_own_addr), | |
585 | tipc_node(tipc_own_addr), p_ptr->ref); | |
b97bf3fd | 586 | else |
dc1aed37 | 587 | ret = tipc_snprintf(buf, len, "%-10u:", p_ptr->ref); |
b97bf3fd | 588 | |
23dd4cce | 589 | if (p_ptr->connected) { |
c4307285 YH |
590 | u32 dport = port_peerport(p_ptr); |
591 | u32 destnode = port_peernode(p_ptr); | |
592 | ||
dc1aed37 EH |
593 | ret += tipc_snprintf(buf + ret, len - ret, |
594 | " connected to <%u.%u.%u:%u>", | |
595 | tipc_zone(destnode), | |
596 | tipc_cluster(destnode), | |
597 | tipc_node(destnode), dport); | |
23dd4cce | 598 | if (p_ptr->conn_type != 0) |
dc1aed37 EH |
599 | ret += tipc_snprintf(buf + ret, len - ret, |
600 | " via {%u,%u}", p_ptr->conn_type, | |
601 | p_ptr->conn_instance); | |
23dd4cce | 602 | } else if (p_ptr->published) { |
dc1aed37 | 603 | ret += tipc_snprintf(buf + ret, len - ret, " bound to"); |
c4307285 | 604 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { |
b97bf3fd | 605 | if (publ->lower == publ->upper) |
dc1aed37 EH |
606 | ret += tipc_snprintf(buf + ret, len - ret, |
607 | " {%u,%u}", publ->type, | |
608 | publ->lower); | |
b97bf3fd | 609 | else |
dc1aed37 EH |
610 | ret += tipc_snprintf(buf + ret, len - ret, |
611 | " {%u,%u,%u}", publ->type, | |
612 | publ->lower, publ->upper); | |
c4307285 YH |
613 | } |
614 | } | |
dc1aed37 EH |
615 | ret += tipc_snprintf(buf + ret, len - ret, "\n"); |
616 | return ret; | |
b97bf3fd PL |
617 | } |
618 | ||
4323add6 | 619 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
620 | { |
621 | struct sk_buff *buf; | |
622 | struct tlv_desc *rep_tlv; | |
dc1aed37 EH |
623 | char *pb; |
624 | int pb_len; | |
23dd4cce | 625 | struct tipc_port *p_ptr; |
dc1aed37 | 626 | int str_len = 0; |
b97bf3fd | 627 | |
dc1aed37 | 628 | buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN)); |
b97bf3fd PL |
629 | if (!buf) |
630 | return NULL; | |
631 | rep_tlv = (struct tlv_desc *)buf->data; | |
dc1aed37 EH |
632 | pb = TLV_DATA(rep_tlv); |
633 | pb_len = ULTRA_STRING_MAX_LEN; | |
b97bf3fd | 634 | |
4323add6 | 635 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 636 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 637 | spin_lock_bh(p_ptr->lock); |
dc1aed37 | 638 | str_len += port_print(p_ptr, pb, pb_len, 0); |
23dd4cce | 639 | spin_unlock_bh(p_ptr->lock); |
b97bf3fd | 640 | } |
4323add6 | 641 | spin_unlock_bh(&tipc_port_list_lock); |
dc1aed37 | 642 | str_len += 1; /* for "\0" */ |
b97bf3fd PL |
643 | skb_put(buf, TLV_SPACE(str_len)); |
644 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
645 | ||
646 | return buf; | |
647 | } | |
648 | ||
4323add6 | 649 | void tipc_port_reinit(void) |
b97bf3fd | 650 | { |
23dd4cce | 651 | struct tipc_port *p_ptr; |
b97bf3fd PL |
652 | struct tipc_msg *msg; |
653 | ||
4323add6 | 654 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 655 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 656 | msg = &p_ptr->phdr; |
6d4a6672 | 657 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
658 | msg_set_orignode(msg, tipc_own_addr); |
659 | } | |
4323add6 | 660 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
661 | } |
662 | ||
b97bf3fd PL |
663 | void tipc_acknowledge(u32 ref, u32 ack) |
664 | { | |
23dd4cce | 665 | struct tipc_port *p_ptr; |
1fc54d8f | 666 | struct sk_buff *buf = NULL; |
b97bf3fd | 667 | |
4323add6 | 668 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
669 | if (!p_ptr) |
670 | return; | |
23dd4cce AS |
671 | if (p_ptr->connected) { |
672 | p_ptr->conn_unacked -= ack; | |
e4a0aee4 | 673 | buf = port_build_proto_msg(p_ptr, CONN_ACK, ack); |
b97bf3fd | 674 | } |
4323add6 PL |
675 | tipc_port_unlock(p_ptr); |
676 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
677 | } |
678 | ||
b97bf3fd PL |
679 | int tipc_portimportance(u32 ref, unsigned int *importance) |
680 | { | |
23dd4cce | 681 | struct tipc_port *p_ptr; |
c4307285 | 682 | |
4323add6 | 683 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
684 | if (!p_ptr) |
685 | return -EINVAL; | |
23dd4cce | 686 | *importance = (unsigned int)msg_importance(&p_ptr->phdr); |
4cec72c8 | 687 | tipc_port_unlock(p_ptr); |
0e35fd5e | 688 | return 0; |
b97bf3fd PL |
689 | } |
690 | ||
691 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
692 | { | |
23dd4cce | 693 | struct tipc_port *p_ptr; |
b97bf3fd PL |
694 | |
695 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
696 | return -EINVAL; | |
697 | ||
4323add6 | 698 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
699 | if (!p_ptr) |
700 | return -EINVAL; | |
23dd4cce | 701 | msg_set_importance(&p_ptr->phdr, (u32)imp); |
4cec72c8 | 702 | tipc_port_unlock(p_ptr); |
0e35fd5e | 703 | return 0; |
b97bf3fd PL |
704 | } |
705 | ||
706 | ||
707 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
708 | { | |
23dd4cce | 709 | struct tipc_port *p_ptr; |
b97bf3fd PL |
710 | struct publication *publ; |
711 | u32 key; | |
712 | int res = -EINVAL; | |
713 | ||
4323add6 | 714 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
715 | if (!p_ptr) |
716 | return -EINVAL; | |
717 | ||
23dd4cce | 718 | if (p_ptr->connected) |
b97bf3fd | 719 | goto exit; |
b97bf3fd PL |
720 | key = ref + p_ptr->pub_count + 1; |
721 | if (key == ref) { | |
722 | res = -EADDRINUSE; | |
723 | goto exit; | |
724 | } | |
4323add6 | 725 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
23dd4cce | 726 | scope, p_ptr->ref, key); |
b97bf3fd PL |
727 | if (publ) { |
728 | list_add(&publ->pport_list, &p_ptr->publications); | |
729 | p_ptr->pub_count++; | |
23dd4cce | 730 | p_ptr->published = 1; |
0e35fd5e | 731 | res = 0; |
b97bf3fd PL |
732 | } |
733 | exit: | |
4323add6 | 734 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
735 | return res; |
736 | } | |
737 | ||
738 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
739 | { | |
23dd4cce | 740 | struct tipc_port *p_ptr; |
b97bf3fd PL |
741 | struct publication *publ; |
742 | struct publication *tpubl; | |
743 | int res = -EINVAL; | |
c4307285 | 744 | |
4323add6 | 745 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
746 | if (!p_ptr) |
747 | return -EINVAL; | |
b97bf3fd | 748 | if (!seq) { |
c4307285 | 749 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 750 | &p_ptr->publications, pport_list) { |
c4307285 | 751 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 752 | publ->ref, publ->key); |
b97bf3fd | 753 | } |
0e35fd5e | 754 | res = 0; |
b97bf3fd | 755 | } else { |
c4307285 | 756 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
757 | &p_ptr->publications, pport_list) { |
758 | if (publ->scope != scope) | |
759 | continue; | |
760 | if (publ->type != seq->type) | |
761 | continue; | |
762 | if (publ->lower != seq->lower) | |
763 | continue; | |
764 | if (publ->upper != seq->upper) | |
765 | break; | |
c4307285 | 766 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 767 | publ->ref, publ->key); |
0e35fd5e | 768 | res = 0; |
b97bf3fd PL |
769 | break; |
770 | } | |
771 | } | |
772 | if (list_empty(&p_ptr->publications)) | |
23dd4cce | 773 | p_ptr->published = 0; |
4323add6 | 774 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
775 | return res; |
776 | } | |
777 | ||
bc879117 | 778 | int tipc_connect(u32 ref, struct tipc_portid const *peer) |
b97bf3fd | 779 | { |
23dd4cce | 780 | struct tipc_port *p_ptr; |
bc879117 | 781 | int res; |
b97bf3fd | 782 | |
4323add6 | 783 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
784 | if (!p_ptr) |
785 | return -EINVAL; | |
bc879117 PG |
786 | res = __tipc_connect(ref, p_ptr, peer); |
787 | tipc_port_unlock(p_ptr); | |
788 | return res; | |
789 | } | |
790 | ||
791 | /* | |
792 | * __tipc_connect - connect to a remote peer | |
793 | * | |
794 | * Port must be locked. | |
795 | */ | |
796 | int __tipc_connect(u32 ref, struct tipc_port *p_ptr, | |
797 | struct tipc_portid const *peer) | |
798 | { | |
799 | struct tipc_msg *msg; | |
800 | int res = -EINVAL; | |
801 | ||
23dd4cce | 802 | if (p_ptr->published || p_ptr->connected) |
b97bf3fd PL |
803 | goto exit; |
804 | if (!peer->ref) | |
805 | goto exit; | |
806 | ||
23dd4cce | 807 | msg = &p_ptr->phdr; |
b97bf3fd PL |
808 | msg_set_destnode(msg, peer->node); |
809 | msg_set_destport(msg, peer->ref); | |
b97bf3fd | 810 | msg_set_type(msg, TIPC_CONN_MSG); |
53b94364 | 811 | msg_set_lookup_scope(msg, 0); |
08c80e9a | 812 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
813 | |
814 | p_ptr->probing_interval = PROBING_INTERVAL; | |
815 | p_ptr->probing_state = CONFIRMED; | |
23dd4cce | 816 | p_ptr->connected = 1; |
b97bf3fd PL |
817 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
818 | ||
0e65967e | 819 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 820 | (void *)(unsigned long)ref, |
b97bf3fd | 821 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 822 | res = 0; |
b97bf3fd | 823 | exit: |
23dd4cce | 824 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
825 | return res; |
826 | } | |
827 | ||
bc879117 PG |
828 | /* |
829 | * __tipc_disconnect - disconnect port from peer | |
0c3141e9 AS |
830 | * |
831 | * Port must be locked. | |
832 | */ | |
bc879117 | 833 | int __tipc_disconnect(struct tipc_port *tp_ptr) |
0c3141e9 AS |
834 | { |
835 | int res; | |
836 | ||
837 | if (tp_ptr->connected) { | |
838 | tp_ptr->connected = 0; | |
839 | /* let timer expire on it's own to avoid deadlock! */ | |
e3192690 | 840 | tipc_nodesub_unsubscribe(&tp_ptr->subscription); |
0e35fd5e | 841 | res = 0; |
0c3141e9 AS |
842 | } else { |
843 | res = -ENOTCONN; | |
844 | } | |
845 | return res; | |
846 | } | |
847 | ||
b97bf3fd PL |
848 | /* |
849 | * tipc_disconnect(): Disconnect port form peer. | |
850 | * This is a node local operation. | |
851 | */ | |
b97bf3fd PL |
852 | int tipc_disconnect(u32 ref) |
853 | { | |
23dd4cce | 854 | struct tipc_port *p_ptr; |
0c3141e9 | 855 | int res; |
b97bf3fd | 856 | |
4323add6 | 857 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
858 | if (!p_ptr) |
859 | return -EINVAL; | |
bc879117 | 860 | res = __tipc_disconnect(p_ptr); |
4323add6 | 861 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
862 | return res; |
863 | } | |
864 | ||
865 | /* | |
866 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
867 | */ | |
868 | int tipc_shutdown(u32 ref) | |
869 | { | |
23dd4cce | 870 | struct tipc_port *p_ptr; |
1fc54d8f | 871 | struct sk_buff *buf = NULL; |
b97bf3fd | 872 | |
4323add6 | 873 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
874 | if (!p_ptr) |
875 | return -EINVAL; | |
876 | ||
e244a915 | 877 | buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN); |
4323add6 PL |
878 | tipc_port_unlock(p_ptr); |
879 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
880 | return tipc_disconnect(ref); |
881 | } | |
882 | ||
9b641251 AS |
883 | /** |
884 | * tipc_port_recv_msg - receive message from lower layer and deliver to port user | |
885 | */ | |
9b641251 AS |
886 | int tipc_port_recv_msg(struct sk_buff *buf) |
887 | { | |
888 | struct tipc_port *p_ptr; | |
889 | struct tipc_msg *msg = buf_msg(buf); | |
890 | u32 destport = msg_destport(msg); | |
891 | u32 dsz = msg_data_sz(msg); | |
892 | u32 err; | |
893 | ||
894 | /* forward unresolved named message */ | |
895 | if (unlikely(!destport)) { | |
896 | tipc_net_route_msg(buf); | |
897 | return dsz; | |
898 | } | |
899 | ||
900 | /* validate destination & pass to port, otherwise reject message */ | |
901 | p_ptr = tipc_port_lock(destport); | |
902 | if (likely(p_ptr)) { | |
9b641251 AS |
903 | err = p_ptr->dispatcher(p_ptr, buf); |
904 | tipc_port_unlock(p_ptr); | |
905 | if (likely(!err)) | |
906 | return dsz; | |
907 | } else { | |
908 | err = TIPC_ERR_NO_PORT; | |
909 | } | |
f0712e86 | 910 | |
9b641251 AS |
911 | return tipc_reject_msg(buf, err); |
912 | } | |
913 | ||
b97bf3fd | 914 | /* |
4323add6 | 915 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
916 | * message for this node. |
917 | */ | |
9446b87a | 918 | static int tipc_port_recv_sections(struct tipc_port *sender, |
26896904 | 919 | struct iovec const *msg_sect, |
9446b87a | 920 | unsigned int len) |
b97bf3fd PL |
921 | { |
922 | struct sk_buff *buf; | |
923 | int res; | |
c4307285 | 924 | |
9446b87a | 925 | res = tipc_msg_build(&sender->phdr, msg_sect, len, MAX_MSG_SIZE, &buf); |
b97bf3fd | 926 | if (likely(buf)) |
4323add6 | 927 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
928 | return res; |
929 | } | |
930 | ||
931 | /** | |
932 | * tipc_send - send message sections on connection | |
933 | */ | |
9446b87a | 934 | int tipc_send(u32 ref, struct iovec const *msg_sect, unsigned int len) |
b97bf3fd | 935 | { |
23dd4cce | 936 | struct tipc_port *p_ptr; |
b97bf3fd PL |
937 | u32 destnode; |
938 | int res; | |
939 | ||
4323add6 | 940 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 941 | if (!p_ptr || !p_ptr->connected) |
b97bf3fd PL |
942 | return -EINVAL; |
943 | ||
23dd4cce | 944 | p_ptr->congested = 1; |
4323add6 | 945 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd | 946 | destnode = port_peernode(p_ptr); |
8a55fe74 | 947 | if (likely(!in_own_node(destnode))) |
9446b87a YX |
948 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, |
949 | len, destnode); | |
b97bf3fd | 950 | else |
9446b87a | 951 | res = tipc_port_recv_sections(p_ptr, msg_sect, len); |
b97bf3fd PL |
952 | |
953 | if (likely(res != -ELINKCONG)) { | |
23dd4cce | 954 | p_ptr->congested = 0; |
cb7ce914 AS |
955 | if (res > 0) |
956 | p_ptr->sent++; | |
b97bf3fd PL |
957 | return res; |
958 | } | |
959 | } | |
960 | if (port_unreliable(p_ptr)) { | |
23dd4cce | 961 | p_ptr->congested = 0; |
9446b87a | 962 | return len; |
b97bf3fd PL |
963 | } |
964 | return -ELINKCONG; | |
965 | } | |
966 | ||
b97bf3fd | 967 | /** |
12bae479 | 968 | * tipc_send2name - send message sections to port name |
b97bf3fd | 969 | */ |
12bae479 | 970 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
9446b87a | 971 | struct iovec const *msg_sect, unsigned int len) |
b97bf3fd | 972 | { |
23dd4cce | 973 | struct tipc_port *p_ptr; |
b97bf3fd PL |
974 | struct tipc_msg *msg; |
975 | u32 destnode = domain; | |
9ccc2eb4 | 976 | u32 destport; |
b97bf3fd PL |
977 | int res; |
978 | ||
4323add6 | 979 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 980 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
981 | return -EINVAL; |
982 | ||
23dd4cce | 983 | msg = &p_ptr->phdr; |
b97bf3fd | 984 | msg_set_type(msg, TIPC_NAMED_MSG); |
741d9eb7 | 985 | msg_set_hdr_sz(msg, NAMED_H_SIZE); |
b97bf3fd PL |
986 | msg_set_nametype(msg, name->type); |
987 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 988 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 989 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
990 | msg_set_destnode(msg, destnode); |
991 | msg_set_destport(msg, destport); | |
992 | ||
bc9f8143 | 993 | if (likely(destport || destnode)) { |
8a55fe74 | 994 | if (likely(in_own_node(destnode))) |
9446b87a | 995 | res = tipc_port_recv_sections(p_ptr, msg_sect, len); |
b8f683d1 | 996 | else if (tipc_own_addr) |
cb7ce914 | 997 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, |
9446b87a | 998 | len, destnode); |
b8f683d1 AS |
999 | else |
1000 | res = tipc_port_reject_sections(p_ptr, msg, msg_sect, | |
9446b87a | 1001 | len, TIPC_ERR_NO_NODE); |
cb7ce914 AS |
1002 | if (likely(res != -ELINKCONG)) { |
1003 | if (res > 0) | |
1004 | p_ptr->sent++; | |
b97bf3fd | 1005 | return res; |
cb7ce914 | 1006 | } |
b97bf3fd | 1007 | if (port_unreliable(p_ptr)) { |
9446b87a | 1008 | return len; |
b97bf3fd PL |
1009 | } |
1010 | return -ELINKCONG; | |
1011 | } | |
9446b87a YX |
1012 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, len, |
1013 | TIPC_ERR_NO_NAME); | |
b97bf3fd PL |
1014 | } |
1015 | ||
1016 | /** | |
12bae479 | 1017 | * tipc_send2port - send message sections to port identity |
b97bf3fd | 1018 | */ |
12bae479 | 1019 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
9446b87a | 1020 | struct iovec const *msg_sect, unsigned int len) |
b97bf3fd | 1021 | { |
23dd4cce | 1022 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1023 | struct tipc_msg *msg; |
1024 | int res; | |
1025 | ||
4323add6 | 1026 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1027 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1028 | return -EINVAL; |
1029 | ||
23dd4cce | 1030 | msg = &p_ptr->phdr; |
b97bf3fd | 1031 | msg_set_type(msg, TIPC_DIRECT_MSG); |
53b94364 | 1032 | msg_set_lookup_scope(msg, 0); |
b97bf3fd PL |
1033 | msg_set_destnode(msg, dest->node); |
1034 | msg_set_destport(msg, dest->ref); | |
741d9eb7 | 1035 | msg_set_hdr_sz(msg, BASIC_H_SIZE); |
cb7ce914 | 1036 | |
8a55fe74 | 1037 | if (in_own_node(dest->node)) |
9446b87a | 1038 | res = tipc_port_recv_sections(p_ptr, msg_sect, len); |
b8f683d1 | 1039 | else if (tipc_own_addr) |
9446b87a YX |
1040 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, len, |
1041 | dest->node); | |
b8f683d1 | 1042 | else |
9446b87a YX |
1043 | res = tipc_port_reject_sections(p_ptr, msg, msg_sect, len, |
1044 | TIPC_ERR_NO_NODE); | |
cb7ce914 AS |
1045 | if (likely(res != -ELINKCONG)) { |
1046 | if (res > 0) | |
1047 | p_ptr->sent++; | |
b97bf3fd | 1048 | return res; |
cb7ce914 | 1049 | } |
b97bf3fd | 1050 | if (port_unreliable(p_ptr)) { |
9446b87a | 1051 | return len; |
b97bf3fd PL |
1052 | } |
1053 | return -ELINKCONG; | |
1054 | } |