Commit | Line | Data |
---|---|---|
b97bf3fd PL |
1 | /* |
2 | * net/tipc/port.c: TIPC port code | |
c4307285 | 3 | * |
8826cde6 | 4 | * Copyright (c) 1992-2007, 2014, 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" |
8826cde6 | 41 | #include "socket.h" |
b97bf3fd PL |
42 | |
43 | /* Connection management: */ | |
44 | #define PROBING_INTERVAL 3600000 /* [ms] => 1 h */ | |
45 | #define CONFIRMED 0 | |
46 | #define PROBING 1 | |
47 | ||
48 | #define MAX_REJECT_SIZE 1024 | |
49 | ||
34af946a | 50 | DEFINE_SPINLOCK(tipc_port_list_lock); |
b97bf3fd | 51 | |
4323add6 | 52 | static LIST_HEAD(ports); |
b97bf3fd | 53 | static void port_handle_node_down(unsigned long ref); |
23dd4cce AS |
54 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *, u32 err); |
55 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *, u32 err); | |
b97bf3fd PL |
56 | static void port_timeout(unsigned long ref); |
57 | ||
2c53040f | 58 | /** |
f0712e86 AS |
59 | * tipc_port_peer_msg - verify message was sent by connected port's peer |
60 | * | |
61 | * Handles cases where the node's network address has changed from | |
62 | * the default of <0.0.0> to its configured setting. | |
63 | */ | |
f0712e86 AS |
64 | int tipc_port_peer_msg(struct tipc_port *p_ptr, struct tipc_msg *msg) |
65 | { | |
66 | u32 peernode; | |
67 | u32 orignode; | |
68 | ||
f9fef18c | 69 | if (msg_origport(msg) != tipc_port_peerport(p_ptr)) |
f0712e86 AS |
70 | return 0; |
71 | ||
72 | orignode = msg_orignode(msg); | |
f9fef18c | 73 | peernode = tipc_port_peernode(p_ptr); |
f0712e86 AS |
74 | return (orignode == peernode) || |
75 | (!orignode && (peernode == tipc_own_addr)) || | |
76 | (!peernode && (orignode == tipc_own_addr)); | |
77 | } | |
78 | ||
b97bf3fd | 79 | /** |
247f0f3c YX |
80 | * tipc_port_mcast_xmit - send a multicast message to local and remote |
81 | * destinations | |
b97bf3fd | 82 | */ |
5c311421 JPM |
83 | int tipc_port_mcast_xmit(struct tipc_port *oport, |
84 | struct tipc_name_seq const *seq, | |
85 | struct iovec const *msg_sect, | |
86 | unsigned int len) | |
b97bf3fd PL |
87 | { |
88 | struct tipc_msg *hdr; | |
89 | struct sk_buff *buf; | |
90 | struct sk_buff *ibuf = NULL; | |
4584310b | 91 | struct tipc_port_list dports = {0, NULL, }; |
b97bf3fd PL |
92 | int ext_targets; |
93 | int res; | |
94 | ||
b97bf3fd | 95 | /* Create multicast message */ |
23dd4cce | 96 | hdr = &oport->phdr; |
b97bf3fd | 97 | msg_set_type(hdr, TIPC_MCAST_MSG); |
53b94364 | 98 | msg_set_lookup_scope(hdr, TIPC_CLUSTER_SCOPE); |
7462b9e9 AS |
99 | msg_set_destport(hdr, 0); |
100 | msg_set_destnode(hdr, 0); | |
b97bf3fd PL |
101 | msg_set_nametype(hdr, seq->type); |
102 | msg_set_namelower(hdr, seq->lower); | |
103 | msg_set_nameupper(hdr, seq->upper); | |
104 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | |
9446b87a | 105 | res = tipc_msg_build(hdr, msg_sect, len, MAX_MSG_SIZE, &buf); |
b97bf3fd PL |
106 | if (unlikely(!buf)) |
107 | return res; | |
108 | ||
109 | /* Figure out where to send multicast message */ | |
4323add6 PL |
110 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
111 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
112 | |
113 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
114 | if (ext_targets) { |
115 | if (dports.count != 0) { | |
116 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
117 | if (ibuf == NULL) { | |
4323add6 | 118 | tipc_port_list_free(&dports); |
5f6d9123 | 119 | kfree_skb(buf); |
b97bf3fd PL |
120 | return -ENOMEM; |
121 | } | |
122 | } | |
247f0f3c | 123 | res = tipc_bclink_xmit(buf); |
a016892c | 124 | if ((res < 0) && (dports.count != 0)) |
5f6d9123 | 125 | kfree_skb(ibuf); |
b97bf3fd PL |
126 | } else { |
127 | ibuf = buf; | |
128 | } | |
129 | ||
130 | if (res >= 0) { | |
131 | if (ibuf) | |
247f0f3c | 132 | tipc_port_mcast_rcv(ibuf, &dports); |
b97bf3fd | 133 | } else { |
4323add6 | 134 | tipc_port_list_free(&dports); |
b97bf3fd PL |
135 | } |
136 | return res; | |
137 | } | |
138 | ||
139 | /** | |
247f0f3c | 140 | * tipc_port_mcast_rcv - deliver multicast message to all destination ports |
c4307285 | 141 | * |
b97bf3fd PL |
142 | * If there is no port list, perform a lookup to create one |
143 | */ | |
247f0f3c | 144 | void tipc_port_mcast_rcv(struct sk_buff *buf, struct tipc_port_list *dp) |
b97bf3fd | 145 | { |
0e65967e | 146 | struct tipc_msg *msg; |
4584310b PG |
147 | struct tipc_port_list dports = {0, NULL, }; |
148 | struct tipc_port_list *item = dp; | |
b97bf3fd PL |
149 | int cnt = 0; |
150 | ||
b97bf3fd PL |
151 | msg = buf_msg(buf); |
152 | ||
153 | /* Create destination port list, if one wasn't supplied */ | |
b97bf3fd | 154 | if (dp == NULL) { |
4323add6 | 155 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
156 | msg_namelower(msg), |
157 | msg_nameupper(msg), | |
158 | TIPC_CLUSTER_SCOPE, | |
159 | &dports); | |
160 | item = dp = &dports; | |
161 | } | |
162 | ||
163 | /* Deliver a copy of message to each destination port */ | |
b97bf3fd | 164 | if (dp->count != 0) { |
7f47f5c7 | 165 | msg_set_destnode(msg, tipc_own_addr); |
b97bf3fd PL |
166 | if (dp->count == 1) { |
167 | msg_set_destport(msg, dp->ports[0]); | |
247f0f3c | 168 | tipc_port_rcv(buf); |
4323add6 | 169 | tipc_port_list_free(dp); |
b97bf3fd PL |
170 | return; |
171 | } | |
172 | for (; cnt < dp->count; cnt++) { | |
173 | int index = cnt % PLSIZE; | |
174 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
175 | ||
176 | if (b == NULL) { | |
2cf8aa19 | 177 | pr_warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
178 | goto exit; |
179 | } | |
a016892c | 180 | if ((index == 0) && (cnt != 0)) |
b97bf3fd | 181 | item = item->next; |
0e65967e | 182 | msg_set_destport(buf_msg(b), item->ports[index]); |
247f0f3c | 183 | tipc_port_rcv(b); |
b97bf3fd PL |
184 | } |
185 | } | |
186 | exit: | |
5f6d9123 | 187 | kfree_skb(buf); |
4323add6 | 188 | tipc_port_list_free(dp); |
b97bf3fd PL |
189 | } |
190 | ||
24be34b5 JPM |
191 | |
192 | void tipc_port_wakeup(struct tipc_port *port) | |
193 | { | |
58ed9442 | 194 | tipc_sock_wakeup(tipc_port_to_sock(port)); |
24be34b5 JPM |
195 | } |
196 | ||
197 | /* tipc_port_init - intiate TIPC port and lock it | |
c4307285 | 198 | * |
24be34b5 | 199 | * Returns obtained reference if initialization is successful, zero otherwise |
b97bf3fd | 200 | */ |
24be34b5 JPM |
201 | u32 tipc_port_init(struct tipc_port *p_ptr, |
202 | const unsigned int importance) | |
b97bf3fd | 203 | { |
b97bf3fd PL |
204 | struct tipc_msg *msg; |
205 | u32 ref; | |
206 | ||
23dd4cce | 207 | ref = tipc_ref_acquire(p_ptr, &p_ptr->lock); |
b97bf3fd | 208 | if (!ref) { |
8826cde6 | 209 | pr_warn("Port registration failed, ref. table exhausted\n"); |
24be34b5 | 210 | return 0; |
b97bf3fd PL |
211 | } |
212 | ||
23dd4cce AS |
213 | p_ptr->max_pkt = MAX_PKT_DEFAULT; |
214 | p_ptr->ref = ref; | |
b97bf3fd PL |
215 | INIT_LIST_HEAD(&p_ptr->wait_list); |
216 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd | 217 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
b97bf3fd PL |
218 | INIT_LIST_HEAD(&p_ptr->publications); |
219 | INIT_LIST_HEAD(&p_ptr->port_list); | |
f21536d1 AS |
220 | |
221 | /* | |
222 | * Must hold port list lock while initializing message header template | |
223 | * to ensure a change to node's own network address doesn't result | |
224 | * in template containing out-dated network address information | |
225 | */ | |
f21536d1 AS |
226 | spin_lock_bh(&tipc_port_list_lock); |
227 | msg = &p_ptr->phdr; | |
228 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0); | |
229 | msg_set_origport(msg, ref); | |
b97bf3fd | 230 | list_add_tail(&p_ptr->port_list, &ports); |
4323add6 | 231 | spin_unlock_bh(&tipc_port_list_lock); |
24be34b5 | 232 | return ref; |
b97bf3fd PL |
233 | } |
234 | ||
24be34b5 | 235 | void tipc_port_destroy(struct tipc_port *p_ptr) |
b97bf3fd | 236 | { |
1fc54d8f | 237 | struct sk_buff *buf = NULL; |
b97bf3fd | 238 | |
84602761 | 239 | tipc_withdraw(p_ptr, 0, NULL); |
b97bf3fd | 240 | |
84602761 YX |
241 | spin_lock_bh(p_ptr->lock); |
242 | tipc_ref_discard(p_ptr->ref); | |
243 | spin_unlock_bh(p_ptr->lock); | |
b97bf3fd PL |
244 | |
245 | k_cancel_timer(&p_ptr->timer); | |
23dd4cce | 246 | if (p_ptr->connected) { |
b97bf3fd | 247 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
4323add6 | 248 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd | 249 | } |
b97bf3fd | 250 | |
4323add6 | 251 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
252 | list_del(&p_ptr->port_list); |
253 | list_del(&p_ptr->wait_list); | |
4323add6 | 254 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd | 255 | k_term_timer(&p_ptr->timer); |
4323add6 | 256 | tipc_net_route_msg(buf); |
b97bf3fd PL |
257 | } |
258 | ||
c4307285 | 259 | /* |
e4a0aee4 AS |
260 | * port_build_proto_msg(): create connection protocol message for port |
261 | * | |
262 | * On entry the port must be locked and connected. | |
b97bf3fd | 263 | */ |
e4a0aee4 AS |
264 | static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr, |
265 | u32 type, u32 ack) | |
b97bf3fd PL |
266 | { |
267 | struct sk_buff *buf; | |
268 | struct tipc_msg *msg; | |
c4307285 | 269 | |
741d9eb7 | 270 | buf = tipc_buf_acquire(INT_H_SIZE); |
b97bf3fd PL |
271 | if (buf) { |
272 | msg = buf_msg(buf); | |
e4a0aee4 | 273 | tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE, |
f9fef18c JPM |
274 | tipc_port_peernode(p_ptr)); |
275 | msg_set_destport(msg, tipc_port_peerport(p_ptr)); | |
e4a0aee4 | 276 | msg_set_origport(msg, p_ptr->ref); |
b97bf3fd | 277 | msg_set_msgcnt(msg, ack); |
b97bf3fd PL |
278 | } |
279 | return buf; | |
280 | } | |
281 | ||
b97bf3fd PL |
282 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
283 | { | |
284 | struct tipc_msg *msg = buf_msg(buf); | |
285 | struct sk_buff *rbuf; | |
286 | struct tipc_msg *rmsg; | |
287 | int hdr_sz; | |
7dd1bf28 | 288 | u32 imp; |
b97bf3fd | 289 | u32 data_sz = msg_data_sz(msg); |
017dac31 | 290 | u32 src_node; |
7dd1bf28 | 291 | u32 rmsg_sz; |
b97bf3fd PL |
292 | |
293 | /* discard rejected message if it shouldn't be returned to sender */ | |
76d12527 AS |
294 | if (WARN(!msg_isdata(msg), |
295 | "attempt to reject message with user=%u", msg_user(msg))) { | |
296 | dump_stack(); | |
297 | goto exit; | |
298 | } | |
acc631bf AS |
299 | if (msg_errcode(msg) || msg_dest_droppable(msg)) |
300 | goto exit; | |
b97bf3fd | 301 | |
7dd1bf28 AS |
302 | /* |
303 | * construct returned message by copying rejected message header and | |
304 | * data (or subset), then updating header fields that need adjusting | |
305 | */ | |
7dd1bf28 AS |
306 | hdr_sz = msg_hdr_sz(msg); |
307 | rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE); | |
308 | ||
309 | rbuf = tipc_buf_acquire(rmsg_sz); | |
acc631bf AS |
310 | if (rbuf == NULL) |
311 | goto exit; | |
312 | ||
b97bf3fd | 313 | rmsg = buf_msg(rbuf); |
7dd1bf28 AS |
314 | skb_copy_to_linear_data(rbuf, msg, rmsg_sz); |
315 | ||
316 | if (msg_connected(rmsg)) { | |
317 | imp = msg_importance(rmsg); | |
318 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
319 | msg_set_importance(rmsg, ++imp); | |
99c14593 | 320 | } |
7dd1bf28 AS |
321 | msg_set_non_seq(rmsg, 0); |
322 | msg_set_size(rmsg, rmsg_sz); | |
323 | msg_set_errcode(rmsg, err); | |
324 | msg_set_prevnode(rmsg, tipc_own_addr); | |
325 | msg_swap_words(rmsg, 4, 5); | |
326 | if (!msg_short(rmsg)) | |
327 | msg_swap_words(rmsg, 6, 7); | |
b97bf3fd PL |
328 | |
329 | /* send self-abort message when rejecting on a connected port */ | |
330 | if (msg_connected(msg)) { | |
23dd4cce | 331 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
332 | |
333 | if (p_ptr) { | |
dff10e9e AS |
334 | struct sk_buff *abuf = NULL; |
335 | ||
23dd4cce | 336 | if (p_ptr->connected) |
b97bf3fd | 337 | abuf = port_build_self_abort_msg(p_ptr, err); |
4323add6 | 338 | tipc_port_unlock(p_ptr); |
dff10e9e | 339 | tipc_net_route_msg(abuf); |
b97bf3fd | 340 | } |
b97bf3fd PL |
341 | } |
342 | ||
acc631bf | 343 | /* send returned message & dispose of rejected message */ |
017dac31 | 344 | src_node = msg_prevnode(msg); |
630d920d | 345 | if (in_own_node(src_node)) |
247f0f3c | 346 | tipc_port_rcv(rbuf); |
017dac31 | 347 | else |
247f0f3c | 348 | tipc_link_xmit(rbuf, src_node, msg_link_selector(rmsg)); |
acc631bf | 349 | exit: |
5f6d9123 | 350 | kfree_skb(buf); |
b97bf3fd PL |
351 | return data_sz; |
352 | } | |
353 | ||
247f0f3c YX |
354 | int tipc_port_iovec_reject(struct tipc_port *p_ptr, struct tipc_msg *hdr, |
355 | struct iovec const *msg_sect, unsigned int len, | |
356 | int err) | |
b97bf3fd PL |
357 | { |
358 | struct sk_buff *buf; | |
359 | int res; | |
360 | ||
9446b87a | 361 | res = tipc_msg_build(hdr, msg_sect, len, MAX_MSG_SIZE, &buf); |
b97bf3fd PL |
362 | if (!buf) |
363 | return res; | |
364 | ||
365 | return tipc_reject_msg(buf, err); | |
366 | } | |
367 | ||
368 | static void port_timeout(unsigned long ref) | |
369 | { | |
23dd4cce | 370 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 371 | struct sk_buff *buf = NULL; |
b97bf3fd | 372 | |
065fd177 AS |
373 | if (!p_ptr) |
374 | return; | |
375 | ||
23dd4cce | 376 | if (!p_ptr->connected) { |
065fd177 | 377 | tipc_port_unlock(p_ptr); |
b97bf3fd | 378 | return; |
065fd177 | 379 | } |
b97bf3fd PL |
380 | |
381 | /* Last probe answered ? */ | |
382 | if (p_ptr->probing_state == PROBING) { | |
383 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
384 | } else { | |
e4a0aee4 | 385 | buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0); |
b97bf3fd PL |
386 | p_ptr->probing_state = PROBING; |
387 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
388 | } | |
4323add6 PL |
389 | tipc_port_unlock(p_ptr); |
390 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
391 | } |
392 | ||
393 | ||
394 | static void port_handle_node_down(unsigned long ref) | |
395 | { | |
23dd4cce | 396 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
0e65967e | 397 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
398 | |
399 | if (!p_ptr) | |
400 | return; | |
401 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
402 | tipc_port_unlock(p_ptr); |
403 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
404 | } |
405 | ||
406 | ||
23dd4cce | 407 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 408 | { |
e244a915 | 409 | struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err); |
b97bf3fd | 410 | |
e244a915 AS |
411 | if (buf) { |
412 | struct tipc_msg *msg = buf_msg(buf); | |
413 | msg_swap_words(msg, 4, 5); | |
414 | msg_swap_words(msg, 6, 7); | |
415 | } | |
416 | return buf; | |
b97bf3fd PL |
417 | } |
418 | ||
419 | ||
23dd4cce | 420 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 421 | { |
e244a915 AS |
422 | struct sk_buff *buf; |
423 | struct tipc_msg *msg; | |
424 | u32 imp; | |
b97bf3fd | 425 | |
23dd4cce | 426 | if (!p_ptr->connected) |
1fc54d8f | 427 | return NULL; |
e244a915 AS |
428 | |
429 | buf = tipc_buf_acquire(BASIC_H_SIZE); | |
430 | if (buf) { | |
431 | msg = buf_msg(buf); | |
432 | memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE); | |
433 | msg_set_hdr_sz(msg, BASIC_H_SIZE); | |
434 | msg_set_size(msg, BASIC_H_SIZE); | |
435 | imp = msg_importance(msg); | |
436 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
437 | msg_set_importance(msg, ++imp); | |
438 | msg_set_errcode(msg, err); | |
439 | } | |
440 | return buf; | |
b97bf3fd PL |
441 | } |
442 | ||
247f0f3c | 443 | void tipc_port_proto_rcv(struct sk_buff *buf) |
b97bf3fd PL |
444 | { |
445 | struct tipc_msg *msg = buf_msg(buf); | |
1c1a551a | 446 | struct tipc_port *p_ptr; |
1fc54d8f | 447 | struct sk_buff *r_buf = NULL; |
1c1a551a AS |
448 | u32 destport = msg_destport(msg); |
449 | int wakeable; | |
450 | ||
451 | /* Validate connection */ | |
1c1a551a | 452 | p_ptr = tipc_port_lock(destport); |
f0712e86 | 453 | if (!p_ptr || !p_ptr->connected || !tipc_port_peer_msg(p_ptr, msg)) { |
f55b5640 AS |
454 | r_buf = tipc_buf_acquire(BASIC_H_SIZE); |
455 | if (r_buf) { | |
456 | msg = buf_msg(r_buf); | |
457 | tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG, | |
f0712e86 | 458 | BASIC_H_SIZE, msg_orignode(msg)); |
f55b5640 AS |
459 | msg_set_errcode(msg, TIPC_ERR_NO_PORT); |
460 | msg_set_origport(msg, destport); | |
f0712e86 | 461 | msg_set_destport(msg, msg_origport(msg)); |
f55b5640 | 462 | } |
1c1a551a AS |
463 | if (p_ptr) |
464 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
465 | goto exit; |
466 | } | |
467 | ||
1c1a551a | 468 | /* Process protocol message sent by peer */ |
1c1a551a AS |
469 | switch (msg_type(msg)) { |
470 | case CONN_ACK: | |
24be34b5 | 471 | wakeable = tipc_port_congested(p_ptr) && p_ptr->congested; |
1c1a551a AS |
472 | p_ptr->acked += msg_msgcnt(msg); |
473 | if (!tipc_port_congested(p_ptr)) { | |
474 | p_ptr->congested = 0; | |
475 | if (wakeable) | |
24be34b5 | 476 | tipc_port_wakeup(p_ptr); |
1c1a551a AS |
477 | } |
478 | break; | |
479 | case CONN_PROBE: | |
e4a0aee4 | 480 | r_buf = port_build_proto_msg(p_ptr, CONN_PROBE_REPLY, 0); |
1c1a551a AS |
481 | break; |
482 | default: | |
483 | /* CONN_PROBE_REPLY or unrecognized - no action required */ | |
484 | break; | |
b97bf3fd PL |
485 | } |
486 | p_ptr->probing_state = CONFIRMED; | |
1c1a551a | 487 | tipc_port_unlock(p_ptr); |
b97bf3fd | 488 | exit: |
4323add6 | 489 | tipc_net_route_msg(r_buf); |
5f6d9123 | 490 | kfree_skb(buf); |
b97bf3fd PL |
491 | } |
492 | ||
dc1aed37 | 493 | static int port_print(struct tipc_port *p_ptr, char *buf, int len, int full_id) |
b97bf3fd | 494 | { |
c4307285 | 495 | struct publication *publ; |
dc1aed37 | 496 | int ret; |
b97bf3fd PL |
497 | |
498 | if (full_id) | |
dc1aed37 EH |
499 | ret = tipc_snprintf(buf, len, "<%u.%u.%u:%u>:", |
500 | tipc_zone(tipc_own_addr), | |
501 | tipc_cluster(tipc_own_addr), | |
502 | tipc_node(tipc_own_addr), p_ptr->ref); | |
b97bf3fd | 503 | else |
dc1aed37 | 504 | ret = tipc_snprintf(buf, len, "%-10u:", p_ptr->ref); |
b97bf3fd | 505 | |
23dd4cce | 506 | if (p_ptr->connected) { |
f9fef18c JPM |
507 | u32 dport = tipc_port_peerport(p_ptr); |
508 | u32 destnode = tipc_port_peernode(p_ptr); | |
c4307285 | 509 | |
dc1aed37 EH |
510 | ret += tipc_snprintf(buf + ret, len - ret, |
511 | " connected to <%u.%u.%u:%u>", | |
512 | tipc_zone(destnode), | |
513 | tipc_cluster(destnode), | |
514 | tipc_node(destnode), dport); | |
23dd4cce | 515 | if (p_ptr->conn_type != 0) |
dc1aed37 EH |
516 | ret += tipc_snprintf(buf + ret, len - ret, |
517 | " via {%u,%u}", p_ptr->conn_type, | |
518 | p_ptr->conn_instance); | |
23dd4cce | 519 | } else if (p_ptr->published) { |
dc1aed37 | 520 | ret += tipc_snprintf(buf + ret, len - ret, " bound to"); |
c4307285 | 521 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { |
b97bf3fd | 522 | if (publ->lower == publ->upper) |
dc1aed37 EH |
523 | ret += tipc_snprintf(buf + ret, len - ret, |
524 | " {%u,%u}", publ->type, | |
525 | publ->lower); | |
b97bf3fd | 526 | else |
dc1aed37 EH |
527 | ret += tipc_snprintf(buf + ret, len - ret, |
528 | " {%u,%u,%u}", publ->type, | |
529 | publ->lower, publ->upper); | |
c4307285 YH |
530 | } |
531 | } | |
dc1aed37 EH |
532 | ret += tipc_snprintf(buf + ret, len - ret, "\n"); |
533 | return ret; | |
b97bf3fd PL |
534 | } |
535 | ||
4323add6 | 536 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
537 | { |
538 | struct sk_buff *buf; | |
539 | struct tlv_desc *rep_tlv; | |
dc1aed37 EH |
540 | char *pb; |
541 | int pb_len; | |
23dd4cce | 542 | struct tipc_port *p_ptr; |
dc1aed37 | 543 | int str_len = 0; |
b97bf3fd | 544 | |
dc1aed37 | 545 | buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN)); |
b97bf3fd PL |
546 | if (!buf) |
547 | return NULL; | |
548 | rep_tlv = (struct tlv_desc *)buf->data; | |
dc1aed37 EH |
549 | pb = TLV_DATA(rep_tlv); |
550 | pb_len = ULTRA_STRING_MAX_LEN; | |
b97bf3fd | 551 | |
4323add6 | 552 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 553 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 554 | spin_lock_bh(p_ptr->lock); |
dc1aed37 | 555 | str_len += port_print(p_ptr, pb, pb_len, 0); |
23dd4cce | 556 | spin_unlock_bh(p_ptr->lock); |
b97bf3fd | 557 | } |
4323add6 | 558 | spin_unlock_bh(&tipc_port_list_lock); |
dc1aed37 | 559 | str_len += 1; /* for "\0" */ |
b97bf3fd PL |
560 | skb_put(buf, TLV_SPACE(str_len)); |
561 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
562 | ||
563 | return buf; | |
564 | } | |
565 | ||
4323add6 | 566 | void tipc_port_reinit(void) |
b97bf3fd | 567 | { |
23dd4cce | 568 | struct tipc_port *p_ptr; |
b97bf3fd PL |
569 | struct tipc_msg *msg; |
570 | ||
4323add6 | 571 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 572 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 573 | msg = &p_ptr->phdr; |
6d4a6672 | 574 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
575 | msg_set_orignode(msg, tipc_own_addr); |
576 | } | |
4323add6 | 577 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
578 | } |
579 | ||
b97bf3fd PL |
580 | void tipc_acknowledge(u32 ref, u32 ack) |
581 | { | |
23dd4cce | 582 | struct tipc_port *p_ptr; |
1fc54d8f | 583 | struct sk_buff *buf = NULL; |
b97bf3fd | 584 | |
4323add6 | 585 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
586 | if (!p_ptr) |
587 | return; | |
23dd4cce AS |
588 | if (p_ptr->connected) { |
589 | p_ptr->conn_unacked -= ack; | |
e4a0aee4 | 590 | buf = port_build_proto_msg(p_ptr, CONN_ACK, ack); |
b97bf3fd | 591 | } |
4323add6 PL |
592 | tipc_port_unlock(p_ptr); |
593 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
594 | } |
595 | ||
84602761 YX |
596 | int tipc_publish(struct tipc_port *p_ptr, unsigned int scope, |
597 | struct tipc_name_seq const *seq) | |
b97bf3fd | 598 | { |
b97bf3fd PL |
599 | struct publication *publ; |
600 | u32 key; | |
b97bf3fd | 601 | |
84602761 | 602 | if (p_ptr->connected) |
d55b4c63 | 603 | return -EINVAL; |
84602761 YX |
604 | key = p_ptr->ref + p_ptr->pub_count + 1; |
605 | if (key == p_ptr->ref) | |
606 | return -EADDRINUSE; | |
d55b4c63 | 607 | |
4323add6 | 608 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
23dd4cce | 609 | scope, p_ptr->ref, key); |
b97bf3fd PL |
610 | if (publ) { |
611 | list_add(&publ->pport_list, &p_ptr->publications); | |
612 | p_ptr->pub_count++; | |
23dd4cce | 613 | p_ptr->published = 1; |
84602761 | 614 | return 0; |
b97bf3fd | 615 | } |
84602761 | 616 | return -EINVAL; |
b97bf3fd PL |
617 | } |
618 | ||
84602761 YX |
619 | int tipc_withdraw(struct tipc_port *p_ptr, unsigned int scope, |
620 | struct tipc_name_seq const *seq) | |
b97bf3fd | 621 | { |
b97bf3fd PL |
622 | struct publication *publ; |
623 | struct publication *tpubl; | |
624 | int res = -EINVAL; | |
c4307285 | 625 | |
b97bf3fd | 626 | if (!seq) { |
c4307285 | 627 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 628 | &p_ptr->publications, pport_list) { |
c4307285 | 629 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 630 | publ->ref, publ->key); |
b97bf3fd | 631 | } |
0e35fd5e | 632 | res = 0; |
b97bf3fd | 633 | } else { |
c4307285 | 634 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
635 | &p_ptr->publications, pport_list) { |
636 | if (publ->scope != scope) | |
637 | continue; | |
638 | if (publ->type != seq->type) | |
639 | continue; | |
640 | if (publ->lower != seq->lower) | |
641 | continue; | |
642 | if (publ->upper != seq->upper) | |
643 | break; | |
c4307285 | 644 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 645 | publ->ref, publ->key); |
0e35fd5e | 646 | res = 0; |
b97bf3fd PL |
647 | break; |
648 | } | |
649 | } | |
650 | if (list_empty(&p_ptr->publications)) | |
23dd4cce | 651 | p_ptr->published = 0; |
b97bf3fd PL |
652 | return res; |
653 | } | |
654 | ||
247f0f3c | 655 | int tipc_port_connect(u32 ref, struct tipc_portid const *peer) |
b97bf3fd | 656 | { |
23dd4cce | 657 | struct tipc_port *p_ptr; |
bc879117 | 658 | int res; |
b97bf3fd | 659 | |
4323add6 | 660 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
661 | if (!p_ptr) |
662 | return -EINVAL; | |
247f0f3c | 663 | res = __tipc_port_connect(ref, p_ptr, peer); |
bc879117 PG |
664 | tipc_port_unlock(p_ptr); |
665 | return res; | |
666 | } | |
667 | ||
668 | /* | |
247f0f3c | 669 | * __tipc_port_connect - connect to a remote peer |
bc879117 PG |
670 | * |
671 | * Port must be locked. | |
672 | */ | |
247f0f3c | 673 | int __tipc_port_connect(u32 ref, struct tipc_port *p_ptr, |
bc879117 PG |
674 | struct tipc_portid const *peer) |
675 | { | |
676 | struct tipc_msg *msg; | |
677 | int res = -EINVAL; | |
678 | ||
23dd4cce | 679 | if (p_ptr->published || p_ptr->connected) |
b97bf3fd PL |
680 | goto exit; |
681 | if (!peer->ref) | |
682 | goto exit; | |
683 | ||
23dd4cce | 684 | msg = &p_ptr->phdr; |
b97bf3fd PL |
685 | msg_set_destnode(msg, peer->node); |
686 | msg_set_destport(msg, peer->ref); | |
b97bf3fd | 687 | msg_set_type(msg, TIPC_CONN_MSG); |
53b94364 | 688 | msg_set_lookup_scope(msg, 0); |
08c80e9a | 689 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
690 | |
691 | p_ptr->probing_interval = PROBING_INTERVAL; | |
692 | p_ptr->probing_state = CONFIRMED; | |
23dd4cce | 693 | p_ptr->connected = 1; |
b97bf3fd PL |
694 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
695 | ||
0e65967e | 696 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 697 | (void *)(unsigned long)ref, |
b97bf3fd | 698 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 699 | res = 0; |
b97bf3fd | 700 | exit: |
23dd4cce | 701 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
702 | return res; |
703 | } | |
704 | ||
bc879117 PG |
705 | /* |
706 | * __tipc_disconnect - disconnect port from peer | |
0c3141e9 AS |
707 | * |
708 | * Port must be locked. | |
709 | */ | |
247f0f3c | 710 | int __tipc_port_disconnect(struct tipc_port *tp_ptr) |
0c3141e9 | 711 | { |
0c3141e9 AS |
712 | if (tp_ptr->connected) { |
713 | tp_ptr->connected = 0; | |
714 | /* let timer expire on it's own to avoid deadlock! */ | |
e3192690 | 715 | tipc_nodesub_unsubscribe(&tp_ptr->subscription); |
0cee6bbe | 716 | return 0; |
0c3141e9 | 717 | } |
0cee6bbe | 718 | |
719 | return -ENOTCONN; | |
0c3141e9 AS |
720 | } |
721 | ||
b97bf3fd | 722 | /* |
247f0f3c | 723 | * tipc_port_disconnect(): Disconnect port form peer. |
b97bf3fd PL |
724 | * This is a node local operation. |
725 | */ | |
247f0f3c | 726 | int tipc_port_disconnect(u32 ref) |
b97bf3fd | 727 | { |
23dd4cce | 728 | struct tipc_port *p_ptr; |
0c3141e9 | 729 | int res; |
b97bf3fd | 730 | |
4323add6 | 731 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
732 | if (!p_ptr) |
733 | return -EINVAL; | |
247f0f3c | 734 | res = __tipc_port_disconnect(p_ptr); |
4323add6 | 735 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
736 | return res; |
737 | } | |
738 | ||
739 | /* | |
247f0f3c | 740 | * tipc_port_shutdown(): Send a SHUTDOWN msg to peer and disconnect |
b97bf3fd | 741 | */ |
247f0f3c | 742 | int tipc_port_shutdown(u32 ref) |
b97bf3fd | 743 | { |
23dd4cce | 744 | struct tipc_port *p_ptr; |
1fc54d8f | 745 | struct sk_buff *buf = NULL; |
b97bf3fd | 746 | |
4323add6 | 747 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
748 | if (!p_ptr) |
749 | return -EINVAL; | |
750 | ||
e244a915 | 751 | buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN); |
4323add6 PL |
752 | tipc_port_unlock(p_ptr); |
753 | tipc_net_route_msg(buf); | |
247f0f3c | 754 | return tipc_port_disconnect(ref); |
b97bf3fd PL |
755 | } |
756 | ||
9b641251 | 757 | /** |
247f0f3c | 758 | * tipc_port_rcv - receive message from lower layer and deliver to port user |
9b641251 | 759 | */ |
247f0f3c | 760 | int tipc_port_rcv(struct sk_buff *buf) |
9b641251 AS |
761 | { |
762 | struct tipc_port *p_ptr; | |
763 | struct tipc_msg *msg = buf_msg(buf); | |
764 | u32 destport = msg_destport(msg); | |
765 | u32 dsz = msg_data_sz(msg); | |
766 | u32 err; | |
767 | ||
768 | /* forward unresolved named message */ | |
769 | if (unlikely(!destport)) { | |
770 | tipc_net_route_msg(buf); | |
771 | return dsz; | |
772 | } | |
773 | ||
774 | /* validate destination & pass to port, otherwise reject message */ | |
775 | p_ptr = tipc_port_lock(destport); | |
776 | if (likely(p_ptr)) { | |
58ed9442 | 777 | err = tipc_sk_rcv(&tipc_port_to_sock(p_ptr)->sk, buf); |
9b641251 AS |
778 | tipc_port_unlock(p_ptr); |
779 | if (likely(!err)) | |
780 | return dsz; | |
781 | } else { | |
782 | err = TIPC_ERR_NO_PORT; | |
783 | } | |
f0712e86 | 784 | |
9b641251 AS |
785 | return tipc_reject_msg(buf, err); |
786 | } | |
787 | ||
b97bf3fd | 788 | /* |
247f0f3c YX |
789 | * tipc_port_iovec_rcv: Concatenate and deliver sectioned |
790 | * message for this node. | |
b97bf3fd | 791 | */ |
247f0f3c YX |
792 | static int tipc_port_iovec_rcv(struct tipc_port *sender, |
793 | struct iovec const *msg_sect, | |
794 | unsigned int len) | |
b97bf3fd PL |
795 | { |
796 | struct sk_buff *buf; | |
797 | int res; | |
c4307285 | 798 | |
9446b87a | 799 | res = tipc_msg_build(&sender->phdr, msg_sect, len, MAX_MSG_SIZE, &buf); |
b97bf3fd | 800 | if (likely(buf)) |
247f0f3c | 801 | tipc_port_rcv(buf); |
b97bf3fd PL |
802 | return res; |
803 | } | |
804 | ||
805 | /** | |
806 | * tipc_send - send message sections on connection | |
807 | */ | |
5c311421 JPM |
808 | int tipc_send(struct tipc_port *p_ptr, |
809 | struct iovec const *msg_sect, | |
810 | unsigned int len) | |
b97bf3fd | 811 | { |
b97bf3fd PL |
812 | u32 destnode; |
813 | int res; | |
814 | ||
5c311421 | 815 | if (!p_ptr->connected) |
b97bf3fd PL |
816 | return -EINVAL; |
817 | ||
23dd4cce | 818 | p_ptr->congested = 1; |
4323add6 | 819 | if (!tipc_port_congested(p_ptr)) { |
f9fef18c | 820 | destnode = tipc_port_peernode(p_ptr); |
8a55fe74 | 821 | if (likely(!in_own_node(destnode))) |
247f0f3c YX |
822 | res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len, |
823 | destnode); | |
b97bf3fd | 824 | else |
247f0f3c | 825 | res = tipc_port_iovec_rcv(p_ptr, msg_sect, len); |
b97bf3fd PL |
826 | |
827 | if (likely(res != -ELINKCONG)) { | |
23dd4cce | 828 | p_ptr->congested = 0; |
cb7ce914 AS |
829 | if (res > 0) |
830 | p_ptr->sent++; | |
b97bf3fd PL |
831 | return res; |
832 | } | |
833 | } | |
3b4f302d | 834 | if (tipc_port_unreliable(p_ptr)) { |
23dd4cce | 835 | p_ptr->congested = 0; |
9446b87a | 836 | return len; |
b97bf3fd PL |
837 | } |
838 | return -ELINKCONG; | |
839 | } | |
840 | ||
b97bf3fd | 841 | /** |
12bae479 | 842 | * tipc_send2name - send message sections to port name |
b97bf3fd | 843 | */ |
5c311421 JPM |
844 | int tipc_send2name(struct tipc_port *p_ptr, |
845 | struct tipc_name const *name, | |
846 | unsigned int domain, | |
847 | struct iovec const *msg_sect, | |
848 | unsigned int len) | |
b97bf3fd | 849 | { |
b97bf3fd PL |
850 | struct tipc_msg *msg; |
851 | u32 destnode = domain; | |
9ccc2eb4 | 852 | u32 destport; |
b97bf3fd PL |
853 | int res; |
854 | ||
5c311421 | 855 | if (p_ptr->connected) |
b97bf3fd PL |
856 | return -EINVAL; |
857 | ||
23dd4cce | 858 | msg = &p_ptr->phdr; |
b97bf3fd | 859 | msg_set_type(msg, TIPC_NAMED_MSG); |
741d9eb7 | 860 | msg_set_hdr_sz(msg, NAMED_H_SIZE); |
b97bf3fd PL |
861 | msg_set_nametype(msg, name->type); |
862 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 863 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 864 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
865 | msg_set_destnode(msg, destnode); |
866 | msg_set_destport(msg, destport); | |
867 | ||
bc9f8143 | 868 | if (likely(destport || destnode)) { |
8a55fe74 | 869 | if (likely(in_own_node(destnode))) |
247f0f3c | 870 | res = tipc_port_iovec_rcv(p_ptr, msg_sect, len); |
b8f683d1 | 871 | else if (tipc_own_addr) |
247f0f3c YX |
872 | res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len, |
873 | destnode); | |
b8f683d1 | 874 | else |
247f0f3c YX |
875 | res = tipc_port_iovec_reject(p_ptr, msg, msg_sect, |
876 | len, TIPC_ERR_NO_NODE); | |
cb7ce914 AS |
877 | if (likely(res != -ELINKCONG)) { |
878 | if (res > 0) | |
879 | p_ptr->sent++; | |
b97bf3fd | 880 | return res; |
cb7ce914 | 881 | } |
3b4f302d | 882 | if (tipc_port_unreliable(p_ptr)) |
9446b87a | 883 | return len; |
3b4f302d | 884 | |
b97bf3fd PL |
885 | return -ELINKCONG; |
886 | } | |
247f0f3c YX |
887 | return tipc_port_iovec_reject(p_ptr, msg, msg_sect, len, |
888 | TIPC_ERR_NO_NAME); | |
b97bf3fd PL |
889 | } |
890 | ||
891 | /** | |
12bae479 | 892 | * tipc_send2port - send message sections to port identity |
b97bf3fd | 893 | */ |
5c311421 JPM |
894 | int tipc_send2port(struct tipc_port *p_ptr, |
895 | struct tipc_portid const *dest, | |
896 | struct iovec const *msg_sect, | |
897 | unsigned int len) | |
b97bf3fd | 898 | { |
b97bf3fd PL |
899 | struct tipc_msg *msg; |
900 | int res; | |
901 | ||
5c311421 | 902 | if (p_ptr->connected) |
b97bf3fd PL |
903 | return -EINVAL; |
904 | ||
23dd4cce | 905 | msg = &p_ptr->phdr; |
b97bf3fd | 906 | msg_set_type(msg, TIPC_DIRECT_MSG); |
53b94364 | 907 | msg_set_lookup_scope(msg, 0); |
b97bf3fd PL |
908 | msg_set_destnode(msg, dest->node); |
909 | msg_set_destport(msg, dest->ref); | |
741d9eb7 | 910 | msg_set_hdr_sz(msg, BASIC_H_SIZE); |
cb7ce914 | 911 | |
8a55fe74 | 912 | if (in_own_node(dest->node)) |
247f0f3c | 913 | res = tipc_port_iovec_rcv(p_ptr, msg_sect, len); |
b8f683d1 | 914 | else if (tipc_own_addr) |
247f0f3c YX |
915 | res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len, |
916 | dest->node); | |
b8f683d1 | 917 | else |
247f0f3c | 918 | res = tipc_port_iovec_reject(p_ptr, msg, msg_sect, len, |
9446b87a | 919 | TIPC_ERR_NO_NODE); |
cb7ce914 AS |
920 | if (likely(res != -ELINKCONG)) { |
921 | if (res > 0) | |
922 | p_ptr->sent++; | |
b97bf3fd | 923 | return res; |
cb7ce914 | 924 | } |
3b4f302d | 925 | if (tipc_port_unreliable(p_ptr)) |
9446b87a | 926 | return len; |
3b4f302d | 927 | |
b97bf3fd PL |
928 | return -ELINKCONG; |
929 | } |