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 | ||
84602761 | 254 | int tipc_deleteport(struct tipc_port *p_ptr) |
b97bf3fd | 255 | { |
1fc54d8f | 256 | struct sk_buff *buf = NULL; |
b97bf3fd | 257 | |
84602761 | 258 | tipc_withdraw(p_ptr, 0, NULL); |
b97bf3fd | 259 | |
84602761 YX |
260 | spin_lock_bh(p_ptr->lock); |
261 | tipc_ref_discard(p_ptr->ref); | |
262 | spin_unlock_bh(p_ptr->lock); | |
b97bf3fd PL |
263 | |
264 | k_cancel_timer(&p_ptr->timer); | |
23dd4cce | 265 | if (p_ptr->connected) { |
b97bf3fd | 266 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
4323add6 | 267 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd | 268 | } |
b97bf3fd | 269 | |
4323add6 | 270 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
271 | list_del(&p_ptr->port_list); |
272 | list_del(&p_ptr->wait_list); | |
4323add6 | 273 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
274 | k_term_timer(&p_ptr->timer); |
275 | kfree(p_ptr); | |
4323add6 | 276 | tipc_net_route_msg(buf); |
0e35fd5e | 277 | return 0; |
b97bf3fd PL |
278 | } |
279 | ||
23dd4cce | 280 | static int port_unreliable(struct tipc_port *p_ptr) |
b97bf3fd | 281 | { |
23dd4cce | 282 | return msg_src_droppable(&p_ptr->phdr); |
b97bf3fd PL |
283 | } |
284 | ||
285 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
286 | { | |
23dd4cce | 287 | struct tipc_port *p_ptr; |
c4307285 | 288 | |
4323add6 | 289 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
290 | if (!p_ptr) |
291 | return -EINVAL; | |
292 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 293 | tipc_port_unlock(p_ptr); |
0e35fd5e | 294 | return 0; |
b97bf3fd PL |
295 | } |
296 | ||
297 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
298 | { | |
23dd4cce | 299 | struct tipc_port *p_ptr; |
c4307285 | 300 | |
4323add6 | 301 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
302 | if (!p_ptr) |
303 | return -EINVAL; | |
23dd4cce | 304 | msg_set_src_droppable(&p_ptr->phdr, (isunreliable != 0)); |
4323add6 | 305 | tipc_port_unlock(p_ptr); |
0e35fd5e | 306 | return 0; |
b97bf3fd PL |
307 | } |
308 | ||
23dd4cce | 309 | static int port_unreturnable(struct tipc_port *p_ptr) |
b97bf3fd | 310 | { |
23dd4cce | 311 | return msg_dest_droppable(&p_ptr->phdr); |
b97bf3fd PL |
312 | } |
313 | ||
314 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
315 | { | |
23dd4cce | 316 | struct tipc_port *p_ptr; |
c4307285 | 317 | |
4323add6 | 318 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
319 | if (!p_ptr) |
320 | return -EINVAL; | |
321 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 322 | tipc_port_unlock(p_ptr); |
0e35fd5e | 323 | return 0; |
b97bf3fd PL |
324 | } |
325 | ||
326 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
327 | { | |
23dd4cce | 328 | struct tipc_port *p_ptr; |
c4307285 | 329 | |
4323add6 | 330 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
331 | if (!p_ptr) |
332 | return -EINVAL; | |
23dd4cce | 333 | msg_set_dest_droppable(&p_ptr->phdr, (isunrejectable != 0)); |
4323add6 | 334 | tipc_port_unlock(p_ptr); |
0e35fd5e | 335 | return 0; |
b97bf3fd PL |
336 | } |
337 | ||
c4307285 | 338 | /* |
e4a0aee4 AS |
339 | * port_build_proto_msg(): create connection protocol message for port |
340 | * | |
341 | * On entry the port must be locked and connected. | |
b97bf3fd | 342 | */ |
e4a0aee4 AS |
343 | static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr, |
344 | u32 type, u32 ack) | |
b97bf3fd PL |
345 | { |
346 | struct sk_buff *buf; | |
347 | struct tipc_msg *msg; | |
c4307285 | 348 | |
741d9eb7 | 349 | buf = tipc_buf_acquire(INT_H_SIZE); |
b97bf3fd PL |
350 | if (buf) { |
351 | msg = buf_msg(buf); | |
e4a0aee4 AS |
352 | tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE, |
353 | port_peernode(p_ptr)); | |
354 | msg_set_destport(msg, port_peerport(p_ptr)); | |
355 | msg_set_origport(msg, p_ptr->ref); | |
b97bf3fd | 356 | msg_set_msgcnt(msg, ack); |
b97bf3fd PL |
357 | } |
358 | return buf; | |
359 | } | |
360 | ||
b97bf3fd PL |
361 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
362 | { | |
363 | struct tipc_msg *msg = buf_msg(buf); | |
364 | struct sk_buff *rbuf; | |
365 | struct tipc_msg *rmsg; | |
366 | int hdr_sz; | |
7dd1bf28 | 367 | u32 imp; |
b97bf3fd | 368 | u32 data_sz = msg_data_sz(msg); |
017dac31 | 369 | u32 src_node; |
7dd1bf28 | 370 | u32 rmsg_sz; |
b97bf3fd PL |
371 | |
372 | /* discard rejected message if it shouldn't be returned to sender */ | |
76d12527 AS |
373 | if (WARN(!msg_isdata(msg), |
374 | "attempt to reject message with user=%u", msg_user(msg))) { | |
375 | dump_stack(); | |
376 | goto exit; | |
377 | } | |
acc631bf AS |
378 | if (msg_errcode(msg) || msg_dest_droppable(msg)) |
379 | goto exit; | |
b97bf3fd | 380 | |
7dd1bf28 AS |
381 | /* |
382 | * construct returned message by copying rejected message header and | |
383 | * data (or subset), then updating header fields that need adjusting | |
384 | */ | |
7dd1bf28 AS |
385 | hdr_sz = msg_hdr_sz(msg); |
386 | rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE); | |
387 | ||
388 | rbuf = tipc_buf_acquire(rmsg_sz); | |
acc631bf AS |
389 | if (rbuf == NULL) |
390 | goto exit; | |
391 | ||
b97bf3fd | 392 | rmsg = buf_msg(rbuf); |
7dd1bf28 AS |
393 | skb_copy_to_linear_data(rbuf, msg, rmsg_sz); |
394 | ||
395 | if (msg_connected(rmsg)) { | |
396 | imp = msg_importance(rmsg); | |
397 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
398 | msg_set_importance(rmsg, ++imp); | |
99c14593 | 399 | } |
7dd1bf28 AS |
400 | msg_set_non_seq(rmsg, 0); |
401 | msg_set_size(rmsg, rmsg_sz); | |
402 | msg_set_errcode(rmsg, err); | |
403 | msg_set_prevnode(rmsg, tipc_own_addr); | |
404 | msg_swap_words(rmsg, 4, 5); | |
405 | if (!msg_short(rmsg)) | |
406 | msg_swap_words(rmsg, 6, 7); | |
b97bf3fd PL |
407 | |
408 | /* send self-abort message when rejecting on a connected port */ | |
409 | if (msg_connected(msg)) { | |
23dd4cce | 410 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
411 | |
412 | if (p_ptr) { | |
dff10e9e AS |
413 | struct sk_buff *abuf = NULL; |
414 | ||
23dd4cce | 415 | if (p_ptr->connected) |
b97bf3fd | 416 | abuf = port_build_self_abort_msg(p_ptr, err); |
4323add6 | 417 | tipc_port_unlock(p_ptr); |
dff10e9e | 418 | tipc_net_route_msg(abuf); |
b97bf3fd | 419 | } |
b97bf3fd PL |
420 | } |
421 | ||
acc631bf | 422 | /* send returned message & dispose of rejected message */ |
017dac31 | 423 | src_node = msg_prevnode(msg); |
630d920d | 424 | if (in_own_node(src_node)) |
017dac31 AS |
425 | tipc_port_recv_msg(rbuf); |
426 | else | |
427 | tipc_link_send(rbuf, src_node, msg_link_selector(rmsg)); | |
acc631bf | 428 | exit: |
5f6d9123 | 429 | kfree_skb(buf); |
b97bf3fd PL |
430 | return data_sz; |
431 | } | |
432 | ||
23dd4cce | 433 | int tipc_port_reject_sections(struct tipc_port *p_ptr, struct tipc_msg *hdr, |
9446b87a YX |
434 | struct iovec const *msg_sect, unsigned int len, |
435 | int err) | |
b97bf3fd PL |
436 | { |
437 | struct sk_buff *buf; | |
438 | int res; | |
439 | ||
9446b87a | 440 | res = tipc_msg_build(hdr, msg_sect, len, MAX_MSG_SIZE, &buf); |
b97bf3fd PL |
441 | if (!buf) |
442 | return res; | |
443 | ||
444 | return tipc_reject_msg(buf, err); | |
445 | } | |
446 | ||
447 | static void port_timeout(unsigned long ref) | |
448 | { | |
23dd4cce | 449 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 450 | struct sk_buff *buf = NULL; |
b97bf3fd | 451 | |
065fd177 AS |
452 | if (!p_ptr) |
453 | return; | |
454 | ||
23dd4cce | 455 | if (!p_ptr->connected) { |
065fd177 | 456 | tipc_port_unlock(p_ptr); |
b97bf3fd | 457 | return; |
065fd177 | 458 | } |
b97bf3fd PL |
459 | |
460 | /* Last probe answered ? */ | |
461 | if (p_ptr->probing_state == PROBING) { | |
462 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
463 | } else { | |
e4a0aee4 | 464 | buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0); |
b97bf3fd PL |
465 | p_ptr->probing_state = PROBING; |
466 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
467 | } | |
4323add6 PL |
468 | tipc_port_unlock(p_ptr); |
469 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
470 | } |
471 | ||
472 | ||
473 | static void port_handle_node_down(unsigned long ref) | |
474 | { | |
23dd4cce | 475 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
0e65967e | 476 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
477 | |
478 | if (!p_ptr) | |
479 | return; | |
480 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
481 | tipc_port_unlock(p_ptr); |
482 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
483 | } |
484 | ||
485 | ||
23dd4cce | 486 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 487 | { |
e244a915 | 488 | struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err); |
b97bf3fd | 489 | |
e244a915 AS |
490 | if (buf) { |
491 | struct tipc_msg *msg = buf_msg(buf); | |
492 | msg_swap_words(msg, 4, 5); | |
493 | msg_swap_words(msg, 6, 7); | |
494 | } | |
495 | return buf; | |
b97bf3fd PL |
496 | } |
497 | ||
498 | ||
23dd4cce | 499 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 500 | { |
e244a915 AS |
501 | struct sk_buff *buf; |
502 | struct tipc_msg *msg; | |
503 | u32 imp; | |
b97bf3fd | 504 | |
23dd4cce | 505 | if (!p_ptr->connected) |
1fc54d8f | 506 | return NULL; |
e244a915 AS |
507 | |
508 | buf = tipc_buf_acquire(BASIC_H_SIZE); | |
509 | if (buf) { | |
510 | msg = buf_msg(buf); | |
511 | memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE); | |
512 | msg_set_hdr_sz(msg, BASIC_H_SIZE); | |
513 | msg_set_size(msg, BASIC_H_SIZE); | |
514 | imp = msg_importance(msg); | |
515 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
516 | msg_set_importance(msg, ++imp); | |
517 | msg_set_errcode(msg, err); | |
518 | } | |
519 | return buf; | |
b97bf3fd PL |
520 | } |
521 | ||
4323add6 | 522 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
523 | { |
524 | struct tipc_msg *msg = buf_msg(buf); | |
1c1a551a | 525 | struct tipc_port *p_ptr; |
1fc54d8f | 526 | struct sk_buff *r_buf = NULL; |
1c1a551a AS |
527 | u32 destport = msg_destport(msg); |
528 | int wakeable; | |
529 | ||
530 | /* Validate connection */ | |
1c1a551a | 531 | p_ptr = tipc_port_lock(destport); |
f0712e86 | 532 | if (!p_ptr || !p_ptr->connected || !tipc_port_peer_msg(p_ptr, msg)) { |
f55b5640 AS |
533 | r_buf = tipc_buf_acquire(BASIC_H_SIZE); |
534 | if (r_buf) { | |
535 | msg = buf_msg(r_buf); | |
536 | tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG, | |
f0712e86 | 537 | BASIC_H_SIZE, msg_orignode(msg)); |
f55b5640 AS |
538 | msg_set_errcode(msg, TIPC_ERR_NO_PORT); |
539 | msg_set_origport(msg, destport); | |
f0712e86 | 540 | msg_set_destport(msg, msg_origport(msg)); |
f55b5640 | 541 | } |
1c1a551a AS |
542 | if (p_ptr) |
543 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
544 | goto exit; |
545 | } | |
546 | ||
1c1a551a | 547 | /* Process protocol message sent by peer */ |
1c1a551a AS |
548 | switch (msg_type(msg)) { |
549 | case CONN_ACK: | |
550 | wakeable = tipc_port_congested(p_ptr) && p_ptr->congested && | |
551 | p_ptr->wakeup; | |
552 | p_ptr->acked += msg_msgcnt(msg); | |
553 | if (!tipc_port_congested(p_ptr)) { | |
554 | p_ptr->congested = 0; | |
555 | if (wakeable) | |
556 | p_ptr->wakeup(p_ptr); | |
557 | } | |
558 | break; | |
559 | case CONN_PROBE: | |
e4a0aee4 | 560 | r_buf = port_build_proto_msg(p_ptr, CONN_PROBE_REPLY, 0); |
1c1a551a AS |
561 | break; |
562 | default: | |
563 | /* CONN_PROBE_REPLY or unrecognized - no action required */ | |
564 | break; | |
b97bf3fd PL |
565 | } |
566 | p_ptr->probing_state = CONFIRMED; | |
1c1a551a | 567 | tipc_port_unlock(p_ptr); |
b97bf3fd | 568 | exit: |
4323add6 | 569 | tipc_net_route_msg(r_buf); |
5f6d9123 | 570 | kfree_skb(buf); |
b97bf3fd PL |
571 | } |
572 | ||
dc1aed37 | 573 | static int port_print(struct tipc_port *p_ptr, char *buf, int len, int full_id) |
b97bf3fd | 574 | { |
c4307285 | 575 | struct publication *publ; |
dc1aed37 | 576 | int ret; |
b97bf3fd PL |
577 | |
578 | if (full_id) | |
dc1aed37 EH |
579 | ret = tipc_snprintf(buf, len, "<%u.%u.%u:%u>:", |
580 | tipc_zone(tipc_own_addr), | |
581 | tipc_cluster(tipc_own_addr), | |
582 | tipc_node(tipc_own_addr), p_ptr->ref); | |
b97bf3fd | 583 | else |
dc1aed37 | 584 | ret = tipc_snprintf(buf, len, "%-10u:", p_ptr->ref); |
b97bf3fd | 585 | |
23dd4cce | 586 | if (p_ptr->connected) { |
c4307285 YH |
587 | u32 dport = port_peerport(p_ptr); |
588 | u32 destnode = port_peernode(p_ptr); | |
589 | ||
dc1aed37 EH |
590 | ret += tipc_snprintf(buf + ret, len - ret, |
591 | " connected to <%u.%u.%u:%u>", | |
592 | tipc_zone(destnode), | |
593 | tipc_cluster(destnode), | |
594 | tipc_node(destnode), dport); | |
23dd4cce | 595 | if (p_ptr->conn_type != 0) |
dc1aed37 EH |
596 | ret += tipc_snprintf(buf + ret, len - ret, |
597 | " via {%u,%u}", p_ptr->conn_type, | |
598 | p_ptr->conn_instance); | |
23dd4cce | 599 | } else if (p_ptr->published) { |
dc1aed37 | 600 | ret += tipc_snprintf(buf + ret, len - ret, " bound to"); |
c4307285 | 601 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { |
b97bf3fd | 602 | if (publ->lower == publ->upper) |
dc1aed37 EH |
603 | ret += tipc_snprintf(buf + ret, len - ret, |
604 | " {%u,%u}", publ->type, | |
605 | publ->lower); | |
b97bf3fd | 606 | else |
dc1aed37 EH |
607 | ret += tipc_snprintf(buf + ret, len - ret, |
608 | " {%u,%u,%u}", publ->type, | |
609 | publ->lower, publ->upper); | |
c4307285 YH |
610 | } |
611 | } | |
dc1aed37 EH |
612 | ret += tipc_snprintf(buf + ret, len - ret, "\n"); |
613 | return ret; | |
b97bf3fd PL |
614 | } |
615 | ||
4323add6 | 616 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
617 | { |
618 | struct sk_buff *buf; | |
619 | struct tlv_desc *rep_tlv; | |
dc1aed37 EH |
620 | char *pb; |
621 | int pb_len; | |
23dd4cce | 622 | struct tipc_port *p_ptr; |
dc1aed37 | 623 | int str_len = 0; |
b97bf3fd | 624 | |
dc1aed37 | 625 | buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN)); |
b97bf3fd PL |
626 | if (!buf) |
627 | return NULL; | |
628 | rep_tlv = (struct tlv_desc *)buf->data; | |
dc1aed37 EH |
629 | pb = TLV_DATA(rep_tlv); |
630 | pb_len = ULTRA_STRING_MAX_LEN; | |
b97bf3fd | 631 | |
4323add6 | 632 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 633 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 634 | spin_lock_bh(p_ptr->lock); |
dc1aed37 | 635 | str_len += port_print(p_ptr, pb, pb_len, 0); |
23dd4cce | 636 | spin_unlock_bh(p_ptr->lock); |
b97bf3fd | 637 | } |
4323add6 | 638 | spin_unlock_bh(&tipc_port_list_lock); |
dc1aed37 | 639 | str_len += 1; /* for "\0" */ |
b97bf3fd PL |
640 | skb_put(buf, TLV_SPACE(str_len)); |
641 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
642 | ||
643 | return buf; | |
644 | } | |
645 | ||
4323add6 | 646 | void tipc_port_reinit(void) |
b97bf3fd | 647 | { |
23dd4cce | 648 | struct tipc_port *p_ptr; |
b97bf3fd PL |
649 | struct tipc_msg *msg; |
650 | ||
4323add6 | 651 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 652 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 653 | msg = &p_ptr->phdr; |
6d4a6672 | 654 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
655 | msg_set_orignode(msg, tipc_own_addr); |
656 | } | |
4323add6 | 657 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
658 | } |
659 | ||
b97bf3fd PL |
660 | void tipc_acknowledge(u32 ref, u32 ack) |
661 | { | |
23dd4cce | 662 | struct tipc_port *p_ptr; |
1fc54d8f | 663 | struct sk_buff *buf = NULL; |
b97bf3fd | 664 | |
4323add6 | 665 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
666 | if (!p_ptr) |
667 | return; | |
23dd4cce AS |
668 | if (p_ptr->connected) { |
669 | p_ptr->conn_unacked -= ack; | |
e4a0aee4 | 670 | buf = port_build_proto_msg(p_ptr, CONN_ACK, ack); |
b97bf3fd | 671 | } |
4323add6 PL |
672 | tipc_port_unlock(p_ptr); |
673 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
674 | } |
675 | ||
b97bf3fd PL |
676 | int tipc_portimportance(u32 ref, unsigned int *importance) |
677 | { | |
23dd4cce | 678 | struct tipc_port *p_ptr; |
c4307285 | 679 | |
4323add6 | 680 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
681 | if (!p_ptr) |
682 | return -EINVAL; | |
23dd4cce | 683 | *importance = (unsigned int)msg_importance(&p_ptr->phdr); |
4cec72c8 | 684 | tipc_port_unlock(p_ptr); |
0e35fd5e | 685 | return 0; |
b97bf3fd PL |
686 | } |
687 | ||
688 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
689 | { | |
23dd4cce | 690 | struct tipc_port *p_ptr; |
b97bf3fd PL |
691 | |
692 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
693 | return -EINVAL; | |
694 | ||
4323add6 | 695 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
696 | if (!p_ptr) |
697 | return -EINVAL; | |
23dd4cce | 698 | msg_set_importance(&p_ptr->phdr, (u32)imp); |
4cec72c8 | 699 | tipc_port_unlock(p_ptr); |
0e35fd5e | 700 | return 0; |
b97bf3fd PL |
701 | } |
702 | ||
703 | ||
84602761 YX |
704 | int tipc_publish(struct tipc_port *p_ptr, unsigned int scope, |
705 | struct tipc_name_seq const *seq) | |
b97bf3fd | 706 | { |
b97bf3fd PL |
707 | struct publication *publ; |
708 | u32 key; | |
b97bf3fd | 709 | |
84602761 | 710 | if (p_ptr->connected) |
d55b4c63 | 711 | return -EINVAL; |
84602761 YX |
712 | key = p_ptr->ref + p_ptr->pub_count + 1; |
713 | if (key == p_ptr->ref) | |
714 | return -EADDRINUSE; | |
d55b4c63 | 715 | |
4323add6 | 716 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
23dd4cce | 717 | scope, p_ptr->ref, key); |
b97bf3fd PL |
718 | if (publ) { |
719 | list_add(&publ->pport_list, &p_ptr->publications); | |
720 | p_ptr->pub_count++; | |
23dd4cce | 721 | p_ptr->published = 1; |
84602761 | 722 | return 0; |
b97bf3fd | 723 | } |
84602761 | 724 | return -EINVAL; |
b97bf3fd PL |
725 | } |
726 | ||
84602761 YX |
727 | int tipc_withdraw(struct tipc_port *p_ptr, unsigned int scope, |
728 | struct tipc_name_seq const *seq) | |
b97bf3fd | 729 | { |
b97bf3fd PL |
730 | struct publication *publ; |
731 | struct publication *tpubl; | |
732 | int res = -EINVAL; | |
c4307285 | 733 | |
b97bf3fd | 734 | if (!seq) { |
c4307285 | 735 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 736 | &p_ptr->publications, pport_list) { |
c4307285 | 737 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 738 | publ->ref, publ->key); |
b97bf3fd | 739 | } |
0e35fd5e | 740 | res = 0; |
b97bf3fd | 741 | } else { |
c4307285 | 742 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
743 | &p_ptr->publications, pport_list) { |
744 | if (publ->scope != scope) | |
745 | continue; | |
746 | if (publ->type != seq->type) | |
747 | continue; | |
748 | if (publ->lower != seq->lower) | |
749 | continue; | |
750 | if (publ->upper != seq->upper) | |
751 | break; | |
c4307285 | 752 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 753 | publ->ref, publ->key); |
0e35fd5e | 754 | res = 0; |
b97bf3fd PL |
755 | break; |
756 | } | |
757 | } | |
758 | if (list_empty(&p_ptr->publications)) | |
23dd4cce | 759 | p_ptr->published = 0; |
b97bf3fd PL |
760 | return res; |
761 | } | |
762 | ||
bc879117 | 763 | int tipc_connect(u32 ref, struct tipc_portid const *peer) |
b97bf3fd | 764 | { |
23dd4cce | 765 | struct tipc_port *p_ptr; |
bc879117 | 766 | int res; |
b97bf3fd | 767 | |
4323add6 | 768 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
769 | if (!p_ptr) |
770 | return -EINVAL; | |
bc879117 PG |
771 | res = __tipc_connect(ref, p_ptr, peer); |
772 | tipc_port_unlock(p_ptr); | |
773 | return res; | |
774 | } | |
775 | ||
776 | /* | |
777 | * __tipc_connect - connect to a remote peer | |
778 | * | |
779 | * Port must be locked. | |
780 | */ | |
781 | int __tipc_connect(u32 ref, struct tipc_port *p_ptr, | |
782 | struct tipc_portid const *peer) | |
783 | { | |
784 | struct tipc_msg *msg; | |
785 | int res = -EINVAL; | |
786 | ||
23dd4cce | 787 | if (p_ptr->published || p_ptr->connected) |
b97bf3fd PL |
788 | goto exit; |
789 | if (!peer->ref) | |
790 | goto exit; | |
791 | ||
23dd4cce | 792 | msg = &p_ptr->phdr; |
b97bf3fd PL |
793 | msg_set_destnode(msg, peer->node); |
794 | msg_set_destport(msg, peer->ref); | |
b97bf3fd | 795 | msg_set_type(msg, TIPC_CONN_MSG); |
53b94364 | 796 | msg_set_lookup_scope(msg, 0); |
08c80e9a | 797 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
798 | |
799 | p_ptr->probing_interval = PROBING_INTERVAL; | |
800 | p_ptr->probing_state = CONFIRMED; | |
23dd4cce | 801 | p_ptr->connected = 1; |
b97bf3fd PL |
802 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
803 | ||
0e65967e | 804 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 805 | (void *)(unsigned long)ref, |
b97bf3fd | 806 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 807 | res = 0; |
b97bf3fd | 808 | exit: |
23dd4cce | 809 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
810 | return res; |
811 | } | |
812 | ||
bc879117 PG |
813 | /* |
814 | * __tipc_disconnect - disconnect port from peer | |
0c3141e9 AS |
815 | * |
816 | * Port must be locked. | |
817 | */ | |
bc879117 | 818 | int __tipc_disconnect(struct tipc_port *tp_ptr) |
0c3141e9 | 819 | { |
0c3141e9 AS |
820 | if (tp_ptr->connected) { |
821 | tp_ptr->connected = 0; | |
822 | /* let timer expire on it's own to avoid deadlock! */ | |
e3192690 | 823 | tipc_nodesub_unsubscribe(&tp_ptr->subscription); |
0cee6bbe | 824 | return 0; |
0c3141e9 | 825 | } |
0cee6bbe | 826 | |
827 | return -ENOTCONN; | |
0c3141e9 AS |
828 | } |
829 | ||
b97bf3fd PL |
830 | /* |
831 | * tipc_disconnect(): Disconnect port form peer. | |
832 | * This is a node local operation. | |
833 | */ | |
b97bf3fd PL |
834 | int tipc_disconnect(u32 ref) |
835 | { | |
23dd4cce | 836 | struct tipc_port *p_ptr; |
0c3141e9 | 837 | int res; |
b97bf3fd | 838 | |
4323add6 | 839 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
840 | if (!p_ptr) |
841 | return -EINVAL; | |
bc879117 | 842 | res = __tipc_disconnect(p_ptr); |
4323add6 | 843 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
844 | return res; |
845 | } | |
846 | ||
847 | /* | |
848 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
849 | */ | |
850 | int tipc_shutdown(u32 ref) | |
851 | { | |
23dd4cce | 852 | struct tipc_port *p_ptr; |
1fc54d8f | 853 | struct sk_buff *buf = NULL; |
b97bf3fd | 854 | |
4323add6 | 855 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
856 | if (!p_ptr) |
857 | return -EINVAL; | |
858 | ||
e244a915 | 859 | buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN); |
4323add6 PL |
860 | tipc_port_unlock(p_ptr); |
861 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
862 | return tipc_disconnect(ref); |
863 | } | |
864 | ||
9b641251 AS |
865 | /** |
866 | * tipc_port_recv_msg - receive message from lower layer and deliver to port user | |
867 | */ | |
9b641251 AS |
868 | int tipc_port_recv_msg(struct sk_buff *buf) |
869 | { | |
870 | struct tipc_port *p_ptr; | |
871 | struct tipc_msg *msg = buf_msg(buf); | |
872 | u32 destport = msg_destport(msg); | |
873 | u32 dsz = msg_data_sz(msg); | |
874 | u32 err; | |
875 | ||
876 | /* forward unresolved named message */ | |
877 | if (unlikely(!destport)) { | |
878 | tipc_net_route_msg(buf); | |
879 | return dsz; | |
880 | } | |
881 | ||
882 | /* validate destination & pass to port, otherwise reject message */ | |
883 | p_ptr = tipc_port_lock(destport); | |
884 | if (likely(p_ptr)) { | |
9b641251 AS |
885 | err = p_ptr->dispatcher(p_ptr, buf); |
886 | tipc_port_unlock(p_ptr); | |
887 | if (likely(!err)) | |
888 | return dsz; | |
889 | } else { | |
890 | err = TIPC_ERR_NO_PORT; | |
891 | } | |
f0712e86 | 892 | |
9b641251 AS |
893 | return tipc_reject_msg(buf, err); |
894 | } | |
895 | ||
b97bf3fd | 896 | /* |
4323add6 | 897 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
898 | * message for this node. |
899 | */ | |
9446b87a | 900 | static int tipc_port_recv_sections(struct tipc_port *sender, |
26896904 | 901 | struct iovec const *msg_sect, |
9446b87a | 902 | unsigned int len) |
b97bf3fd PL |
903 | { |
904 | struct sk_buff *buf; | |
905 | int res; | |
c4307285 | 906 | |
9446b87a | 907 | res = tipc_msg_build(&sender->phdr, msg_sect, len, MAX_MSG_SIZE, &buf); |
b97bf3fd | 908 | if (likely(buf)) |
4323add6 | 909 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
910 | return res; |
911 | } | |
912 | ||
913 | /** | |
914 | * tipc_send - send message sections on connection | |
915 | */ | |
9446b87a | 916 | int tipc_send(u32 ref, struct iovec const *msg_sect, unsigned int len) |
b97bf3fd | 917 | { |
23dd4cce | 918 | struct tipc_port *p_ptr; |
b97bf3fd PL |
919 | u32 destnode; |
920 | int res; | |
921 | ||
4323add6 | 922 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 923 | if (!p_ptr || !p_ptr->connected) |
b97bf3fd PL |
924 | return -EINVAL; |
925 | ||
23dd4cce | 926 | p_ptr->congested = 1; |
4323add6 | 927 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd | 928 | destnode = port_peernode(p_ptr); |
8a55fe74 | 929 | if (likely(!in_own_node(destnode))) |
9446b87a YX |
930 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, |
931 | len, destnode); | |
b97bf3fd | 932 | else |
9446b87a | 933 | res = tipc_port_recv_sections(p_ptr, msg_sect, len); |
b97bf3fd PL |
934 | |
935 | if (likely(res != -ELINKCONG)) { | |
23dd4cce | 936 | p_ptr->congested = 0; |
cb7ce914 AS |
937 | if (res > 0) |
938 | p_ptr->sent++; | |
b97bf3fd PL |
939 | return res; |
940 | } | |
941 | } | |
942 | if (port_unreliable(p_ptr)) { | |
23dd4cce | 943 | p_ptr->congested = 0; |
9446b87a | 944 | return len; |
b97bf3fd PL |
945 | } |
946 | return -ELINKCONG; | |
947 | } | |
948 | ||
b97bf3fd | 949 | /** |
12bae479 | 950 | * tipc_send2name - send message sections to port name |
b97bf3fd | 951 | */ |
12bae479 | 952 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
9446b87a | 953 | struct iovec const *msg_sect, unsigned int len) |
b97bf3fd | 954 | { |
23dd4cce | 955 | struct tipc_port *p_ptr; |
b97bf3fd PL |
956 | struct tipc_msg *msg; |
957 | u32 destnode = domain; | |
9ccc2eb4 | 958 | u32 destport; |
b97bf3fd PL |
959 | int res; |
960 | ||
4323add6 | 961 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 962 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
963 | return -EINVAL; |
964 | ||
23dd4cce | 965 | msg = &p_ptr->phdr; |
b97bf3fd | 966 | msg_set_type(msg, TIPC_NAMED_MSG); |
741d9eb7 | 967 | msg_set_hdr_sz(msg, NAMED_H_SIZE); |
b97bf3fd PL |
968 | msg_set_nametype(msg, name->type); |
969 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 970 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 971 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
972 | msg_set_destnode(msg, destnode); |
973 | msg_set_destport(msg, destport); | |
974 | ||
bc9f8143 | 975 | if (likely(destport || destnode)) { |
8a55fe74 | 976 | if (likely(in_own_node(destnode))) |
9446b87a | 977 | res = tipc_port_recv_sections(p_ptr, msg_sect, len); |
b8f683d1 | 978 | else if (tipc_own_addr) |
cb7ce914 | 979 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, |
9446b87a | 980 | len, destnode); |
b8f683d1 AS |
981 | else |
982 | res = tipc_port_reject_sections(p_ptr, msg, msg_sect, | |
9446b87a | 983 | len, TIPC_ERR_NO_NODE); |
cb7ce914 AS |
984 | if (likely(res != -ELINKCONG)) { |
985 | if (res > 0) | |
986 | p_ptr->sent++; | |
b97bf3fd | 987 | return res; |
cb7ce914 | 988 | } |
b97bf3fd | 989 | if (port_unreliable(p_ptr)) { |
9446b87a | 990 | return len; |
b97bf3fd PL |
991 | } |
992 | return -ELINKCONG; | |
993 | } | |
9446b87a YX |
994 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, len, |
995 | TIPC_ERR_NO_NAME); | |
b97bf3fd PL |
996 | } |
997 | ||
998 | /** | |
12bae479 | 999 | * tipc_send2port - send message sections to port identity |
b97bf3fd | 1000 | */ |
12bae479 | 1001 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
9446b87a | 1002 | struct iovec const *msg_sect, unsigned int len) |
b97bf3fd | 1003 | { |
23dd4cce | 1004 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1005 | struct tipc_msg *msg; |
1006 | int res; | |
1007 | ||
4323add6 | 1008 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1009 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1010 | return -EINVAL; |
1011 | ||
23dd4cce | 1012 | msg = &p_ptr->phdr; |
b97bf3fd | 1013 | msg_set_type(msg, TIPC_DIRECT_MSG); |
53b94364 | 1014 | msg_set_lookup_scope(msg, 0); |
b97bf3fd PL |
1015 | msg_set_destnode(msg, dest->node); |
1016 | msg_set_destport(msg, dest->ref); | |
741d9eb7 | 1017 | msg_set_hdr_sz(msg, BASIC_H_SIZE); |
cb7ce914 | 1018 | |
8a55fe74 | 1019 | if (in_own_node(dest->node)) |
9446b87a | 1020 | res = tipc_port_recv_sections(p_ptr, msg_sect, len); |
b8f683d1 | 1021 | else if (tipc_own_addr) |
9446b87a YX |
1022 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, len, |
1023 | dest->node); | |
b8f683d1 | 1024 | else |
9446b87a YX |
1025 | res = tipc_port_reject_sections(p_ptr, msg, msg_sect, len, |
1026 | TIPC_ERR_NO_NODE); | |
cb7ce914 AS |
1027 | if (likely(res != -ELINKCONG)) { |
1028 | if (res > 0) | |
1029 | p_ptr->sent++; | |
b97bf3fd | 1030 | return res; |
cb7ce914 | 1031 | } |
b97bf3fd | 1032 | if (port_unreliable(p_ptr)) { |
9446b87a | 1033 | return len; |
b97bf3fd PL |
1034 | } |
1035 | return -ELINKCONG; | |
1036 | } |