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Commit | Line | Data |
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b97bf3fd PL |
1 | /* |
2 | * net/tipc/port.c: TIPC port code | |
c4307285 | 3 | * |
05646c91 | 4 | * Copyright (c) 1992-2007, Ericsson AB |
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 | 89 | /** |
247f0f3c YX |
90 | * tipc_port_mcast_xmit - send a multicast message to local and remote |
91 | * destinations | |
b97bf3fd | 92 | */ |
247f0f3c YX |
93 | int tipc_port_mcast_xmit(u32 ref, struct tipc_name_seq const *seq, |
94 | struct iovec const *msg_sect, unsigned int len) | |
b97bf3fd PL |
95 | { |
96 | struct tipc_msg *hdr; | |
97 | struct sk_buff *buf; | |
98 | struct sk_buff *ibuf = NULL; | |
4584310b | 99 | struct tipc_port_list dports = {0, NULL, }; |
23dd4cce | 100 | struct tipc_port *oport = tipc_port_deref(ref); |
b97bf3fd PL |
101 | int ext_targets; |
102 | int res; | |
103 | ||
104 | if (unlikely(!oport)) | |
105 | return -EINVAL; | |
106 | ||
107 | /* Create multicast message */ | |
23dd4cce | 108 | hdr = &oport->phdr; |
b97bf3fd | 109 | msg_set_type(hdr, TIPC_MCAST_MSG); |
53b94364 | 110 | msg_set_lookup_scope(hdr, TIPC_CLUSTER_SCOPE); |
7462b9e9 AS |
111 | msg_set_destport(hdr, 0); |
112 | msg_set_destnode(hdr, 0); | |
b97bf3fd PL |
113 | msg_set_nametype(hdr, seq->type); |
114 | msg_set_namelower(hdr, seq->lower); | |
115 | msg_set_nameupper(hdr, seq->upper); | |
116 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | |
9446b87a | 117 | res = tipc_msg_build(hdr, msg_sect, len, MAX_MSG_SIZE, &buf); |
b97bf3fd PL |
118 | if (unlikely(!buf)) |
119 | return res; | |
120 | ||
121 | /* Figure out where to send multicast message */ | |
4323add6 PL |
122 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
123 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
124 | |
125 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
126 | if (ext_targets) { |
127 | if (dports.count != 0) { | |
128 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
129 | if (ibuf == NULL) { | |
4323add6 | 130 | tipc_port_list_free(&dports); |
5f6d9123 | 131 | kfree_skb(buf); |
b97bf3fd PL |
132 | return -ENOMEM; |
133 | } | |
134 | } | |
247f0f3c | 135 | res = tipc_bclink_xmit(buf); |
a016892c | 136 | if ((res < 0) && (dports.count != 0)) |
5f6d9123 | 137 | kfree_skb(ibuf); |
b97bf3fd PL |
138 | } else { |
139 | ibuf = buf; | |
140 | } | |
141 | ||
142 | if (res >= 0) { | |
143 | if (ibuf) | |
247f0f3c | 144 | tipc_port_mcast_rcv(ibuf, &dports); |
b97bf3fd | 145 | } else { |
4323add6 | 146 | tipc_port_list_free(&dports); |
b97bf3fd PL |
147 | } |
148 | return res; | |
149 | } | |
150 | ||
151 | /** | |
247f0f3c | 152 | * tipc_port_mcast_rcv - deliver multicast message to all destination ports |
c4307285 | 153 | * |
b97bf3fd PL |
154 | * If there is no port list, perform a lookup to create one |
155 | */ | |
247f0f3c | 156 | void tipc_port_mcast_rcv(struct sk_buff *buf, struct tipc_port_list *dp) |
b97bf3fd | 157 | { |
0e65967e | 158 | struct tipc_msg *msg; |
4584310b PG |
159 | struct tipc_port_list dports = {0, NULL, }; |
160 | struct tipc_port_list *item = dp; | |
b97bf3fd PL |
161 | int cnt = 0; |
162 | ||
b97bf3fd PL |
163 | msg = buf_msg(buf); |
164 | ||
165 | /* Create destination port list, if one wasn't supplied */ | |
b97bf3fd | 166 | if (dp == NULL) { |
4323add6 | 167 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
168 | msg_namelower(msg), |
169 | msg_nameupper(msg), | |
170 | TIPC_CLUSTER_SCOPE, | |
171 | &dports); | |
172 | item = dp = &dports; | |
173 | } | |
174 | ||
175 | /* Deliver a copy of message to each destination port */ | |
b97bf3fd | 176 | if (dp->count != 0) { |
7f47f5c7 | 177 | msg_set_destnode(msg, tipc_own_addr); |
b97bf3fd PL |
178 | if (dp->count == 1) { |
179 | msg_set_destport(msg, dp->ports[0]); | |
247f0f3c | 180 | tipc_port_rcv(buf); |
4323add6 | 181 | tipc_port_list_free(dp); |
b97bf3fd PL |
182 | return; |
183 | } | |
184 | for (; cnt < dp->count; cnt++) { | |
185 | int index = cnt % PLSIZE; | |
186 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
187 | ||
188 | if (b == NULL) { | |
2cf8aa19 | 189 | pr_warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
190 | goto exit; |
191 | } | |
a016892c | 192 | if ((index == 0) && (cnt != 0)) |
b97bf3fd | 193 | item = item->next; |
0e65967e | 194 | msg_set_destport(buf_msg(b), item->ports[index]); |
247f0f3c | 195 | tipc_port_rcv(b); |
b97bf3fd PL |
196 | } |
197 | } | |
198 | exit: | |
5f6d9123 | 199 | kfree_skb(buf); |
4323add6 | 200 | tipc_port_list_free(dp); |
b97bf3fd PL |
201 | } |
202 | ||
203 | /** | |
3c5db8e4 | 204 | * tipc_createport - create a generic TIPC port |
c4307285 | 205 | * |
0ea52241 | 206 | * Returns pointer to (locked) TIPC port, or NULL if unable to create it |
b97bf3fd | 207 | */ |
c0fee8ac | 208 | struct tipc_port *tipc_createport(struct sock *sk, |
ae8509c4 PG |
209 | u32 (*dispatcher)(struct tipc_port *, |
210 | struct sk_buff *), | |
211 | void (*wakeup)(struct tipc_port *), | |
212 | const u32 importance) | |
b97bf3fd | 213 | { |
23dd4cce | 214 | struct tipc_port *p_ptr; |
b97bf3fd PL |
215 | struct tipc_msg *msg; |
216 | u32 ref; | |
217 | ||
0da974f4 | 218 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 | 219 | if (!p_ptr) { |
2cf8aa19 | 220 | pr_warn("Port creation failed, no memory\n"); |
0ea52241 | 221 | return NULL; |
b97bf3fd | 222 | } |
23dd4cce | 223 | ref = tipc_ref_acquire(p_ptr, &p_ptr->lock); |
b97bf3fd | 224 | if (!ref) { |
2cf8aa19 | 225 | pr_warn("Port creation failed, ref. table exhausted\n"); |
b97bf3fd | 226 | kfree(p_ptr); |
0ea52241 | 227 | return NULL; |
b97bf3fd PL |
228 | } |
229 | ||
c0fee8ac | 230 | p_ptr->sk = sk; |
23dd4cce AS |
231 | p_ptr->max_pkt = MAX_PKT_DEFAULT; |
232 | p_ptr->ref = ref; | |
b97bf3fd PL |
233 | INIT_LIST_HEAD(&p_ptr->wait_list); |
234 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd PL |
235 | p_ptr->dispatcher = dispatcher; |
236 | p_ptr->wakeup = wakeup; | |
b97bf3fd | 237 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
b97bf3fd PL |
238 | INIT_LIST_HEAD(&p_ptr->publications); |
239 | INIT_LIST_HEAD(&p_ptr->port_list); | |
f21536d1 AS |
240 | |
241 | /* | |
242 | * Must hold port list lock while initializing message header template | |
243 | * to ensure a change to node's own network address doesn't result | |
244 | * in template containing out-dated network address information | |
245 | */ | |
f21536d1 AS |
246 | spin_lock_bh(&tipc_port_list_lock); |
247 | msg = &p_ptr->phdr; | |
248 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0); | |
249 | msg_set_origport(msg, ref); | |
b97bf3fd | 250 | list_add_tail(&p_ptr->port_list, &ports); |
4323add6 | 251 | spin_unlock_bh(&tipc_port_list_lock); |
23dd4cce | 252 | return p_ptr; |
b97bf3fd PL |
253 | } |
254 | ||
84602761 | 255 | int tipc_deleteport(struct tipc_port *p_ptr) |
b97bf3fd | 256 | { |
1fc54d8f | 257 | struct sk_buff *buf = NULL; |
b97bf3fd | 258 | |
84602761 | 259 | tipc_withdraw(p_ptr, 0, NULL); |
b97bf3fd | 260 | |
84602761 YX |
261 | spin_lock_bh(p_ptr->lock); |
262 | tipc_ref_discard(p_ptr->ref); | |
263 | spin_unlock_bh(p_ptr->lock); | |
b97bf3fd PL |
264 | |
265 | k_cancel_timer(&p_ptr->timer); | |
23dd4cce | 266 | if (p_ptr->connected) { |
b97bf3fd | 267 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
4323add6 | 268 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd | 269 | } |
b97bf3fd | 270 | |
4323add6 | 271 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
272 | list_del(&p_ptr->port_list); |
273 | list_del(&p_ptr->wait_list); | |
4323add6 | 274 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
275 | k_term_timer(&p_ptr->timer); |
276 | kfree(p_ptr); | |
4323add6 | 277 | tipc_net_route_msg(buf); |
0e35fd5e | 278 | return 0; |
b97bf3fd PL |
279 | } |
280 | ||
23dd4cce | 281 | static int port_unreliable(struct tipc_port *p_ptr) |
b97bf3fd | 282 | { |
23dd4cce | 283 | return msg_src_droppable(&p_ptr->phdr); |
b97bf3fd PL |
284 | } |
285 | ||
286 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
287 | { | |
23dd4cce | 288 | struct tipc_port *p_ptr; |
c4307285 | 289 | |
4323add6 | 290 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
291 | if (!p_ptr) |
292 | return -EINVAL; | |
293 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 294 | tipc_port_unlock(p_ptr); |
0e35fd5e | 295 | return 0; |
b97bf3fd PL |
296 | } |
297 | ||
298 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
299 | { | |
23dd4cce | 300 | struct tipc_port *p_ptr; |
c4307285 | 301 | |
4323add6 | 302 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
303 | if (!p_ptr) |
304 | return -EINVAL; | |
23dd4cce | 305 | msg_set_src_droppable(&p_ptr->phdr, (isunreliable != 0)); |
4323add6 | 306 | tipc_port_unlock(p_ptr); |
0e35fd5e | 307 | return 0; |
b97bf3fd PL |
308 | } |
309 | ||
23dd4cce | 310 | static int port_unreturnable(struct tipc_port *p_ptr) |
b97bf3fd | 311 | { |
23dd4cce | 312 | return msg_dest_droppable(&p_ptr->phdr); |
b97bf3fd PL |
313 | } |
314 | ||
315 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
316 | { | |
23dd4cce | 317 | struct tipc_port *p_ptr; |
c4307285 | 318 | |
4323add6 | 319 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
320 | if (!p_ptr) |
321 | return -EINVAL; | |
322 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 323 | tipc_port_unlock(p_ptr); |
0e35fd5e | 324 | return 0; |
b97bf3fd PL |
325 | } |
326 | ||
327 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
328 | { | |
23dd4cce | 329 | struct tipc_port *p_ptr; |
c4307285 | 330 | |
4323add6 | 331 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
332 | if (!p_ptr) |
333 | return -EINVAL; | |
23dd4cce | 334 | msg_set_dest_droppable(&p_ptr->phdr, (isunrejectable != 0)); |
4323add6 | 335 | tipc_port_unlock(p_ptr); |
0e35fd5e | 336 | return 0; |
b97bf3fd PL |
337 | } |
338 | ||
c4307285 | 339 | /* |
e4a0aee4 AS |
340 | * port_build_proto_msg(): create connection protocol message for port |
341 | * | |
342 | * On entry the port must be locked and connected. | |
b97bf3fd | 343 | */ |
e4a0aee4 AS |
344 | static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr, |
345 | u32 type, u32 ack) | |
b97bf3fd PL |
346 | { |
347 | struct sk_buff *buf; | |
348 | struct tipc_msg *msg; | |
c4307285 | 349 | |
741d9eb7 | 350 | buf = tipc_buf_acquire(INT_H_SIZE); |
b97bf3fd PL |
351 | if (buf) { |
352 | msg = buf_msg(buf); | |
e4a0aee4 AS |
353 | tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE, |
354 | port_peernode(p_ptr)); | |
355 | msg_set_destport(msg, port_peerport(p_ptr)); | |
356 | msg_set_origport(msg, p_ptr->ref); | |
b97bf3fd | 357 | msg_set_msgcnt(msg, ack); |
b97bf3fd PL |
358 | } |
359 | return buf; | |
360 | } | |
361 | ||
b97bf3fd PL |
362 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
363 | { | |
364 | struct tipc_msg *msg = buf_msg(buf); | |
365 | struct sk_buff *rbuf; | |
366 | struct tipc_msg *rmsg; | |
367 | int hdr_sz; | |
7dd1bf28 | 368 | u32 imp; |
b97bf3fd | 369 | u32 data_sz = msg_data_sz(msg); |
017dac31 | 370 | u32 src_node; |
7dd1bf28 | 371 | u32 rmsg_sz; |
b97bf3fd PL |
372 | |
373 | /* discard rejected message if it shouldn't be returned to sender */ | |
76d12527 AS |
374 | if (WARN(!msg_isdata(msg), |
375 | "attempt to reject message with user=%u", msg_user(msg))) { | |
376 | dump_stack(); | |
377 | goto exit; | |
378 | } | |
acc631bf AS |
379 | if (msg_errcode(msg) || msg_dest_droppable(msg)) |
380 | goto exit; | |
b97bf3fd | 381 | |
7dd1bf28 AS |
382 | /* |
383 | * construct returned message by copying rejected message header and | |
384 | * data (or subset), then updating header fields that need adjusting | |
385 | */ | |
7dd1bf28 AS |
386 | hdr_sz = msg_hdr_sz(msg); |
387 | rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE); | |
388 | ||
389 | rbuf = tipc_buf_acquire(rmsg_sz); | |
acc631bf AS |
390 | if (rbuf == NULL) |
391 | goto exit; | |
392 | ||
b97bf3fd | 393 | rmsg = buf_msg(rbuf); |
7dd1bf28 AS |
394 | skb_copy_to_linear_data(rbuf, msg, rmsg_sz); |
395 | ||
396 | if (msg_connected(rmsg)) { | |
397 | imp = msg_importance(rmsg); | |
398 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
399 | msg_set_importance(rmsg, ++imp); | |
99c14593 | 400 | } |
7dd1bf28 AS |
401 | msg_set_non_seq(rmsg, 0); |
402 | msg_set_size(rmsg, rmsg_sz); | |
403 | msg_set_errcode(rmsg, err); | |
404 | msg_set_prevnode(rmsg, tipc_own_addr); | |
405 | msg_swap_words(rmsg, 4, 5); | |
406 | if (!msg_short(rmsg)) | |
407 | msg_swap_words(rmsg, 6, 7); | |
b97bf3fd PL |
408 | |
409 | /* send self-abort message when rejecting on a connected port */ | |
410 | if (msg_connected(msg)) { | |
23dd4cce | 411 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
412 | |
413 | if (p_ptr) { | |
dff10e9e AS |
414 | struct sk_buff *abuf = NULL; |
415 | ||
23dd4cce | 416 | if (p_ptr->connected) |
b97bf3fd | 417 | abuf = port_build_self_abort_msg(p_ptr, err); |
4323add6 | 418 | tipc_port_unlock(p_ptr); |
dff10e9e | 419 | tipc_net_route_msg(abuf); |
b97bf3fd | 420 | } |
b97bf3fd PL |
421 | } |
422 | ||
acc631bf | 423 | /* send returned message & dispose of rejected message */ |
017dac31 | 424 | src_node = msg_prevnode(msg); |
630d920d | 425 | if (in_own_node(src_node)) |
247f0f3c | 426 | tipc_port_rcv(rbuf); |
017dac31 | 427 | else |
247f0f3c | 428 | tipc_link_xmit(rbuf, src_node, msg_link_selector(rmsg)); |
acc631bf | 429 | exit: |
5f6d9123 | 430 | kfree_skb(buf); |
b97bf3fd PL |
431 | return data_sz; |
432 | } | |
433 | ||
247f0f3c YX |
434 | int tipc_port_iovec_reject(struct tipc_port *p_ptr, struct tipc_msg *hdr, |
435 | struct iovec const *msg_sect, unsigned int len, | |
436 | int err) | |
b97bf3fd PL |
437 | { |
438 | struct sk_buff *buf; | |
439 | int res; | |
440 | ||
9446b87a | 441 | res = tipc_msg_build(hdr, msg_sect, len, MAX_MSG_SIZE, &buf); |
b97bf3fd PL |
442 | if (!buf) |
443 | return res; | |
444 | ||
445 | return tipc_reject_msg(buf, err); | |
446 | } | |
447 | ||
448 | static void port_timeout(unsigned long ref) | |
449 | { | |
23dd4cce | 450 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 451 | struct sk_buff *buf = NULL; |
b97bf3fd | 452 | |
065fd177 AS |
453 | if (!p_ptr) |
454 | return; | |
455 | ||
23dd4cce | 456 | if (!p_ptr->connected) { |
065fd177 | 457 | tipc_port_unlock(p_ptr); |
b97bf3fd | 458 | return; |
065fd177 | 459 | } |
b97bf3fd PL |
460 | |
461 | /* Last probe answered ? */ | |
462 | if (p_ptr->probing_state == PROBING) { | |
463 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
464 | } else { | |
e4a0aee4 | 465 | buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0); |
b97bf3fd PL |
466 | p_ptr->probing_state = PROBING; |
467 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
468 | } | |
4323add6 PL |
469 | tipc_port_unlock(p_ptr); |
470 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
471 | } |
472 | ||
473 | ||
474 | static void port_handle_node_down(unsigned long ref) | |
475 | { | |
23dd4cce | 476 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
0e65967e | 477 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
478 | |
479 | if (!p_ptr) | |
480 | return; | |
481 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
482 | tipc_port_unlock(p_ptr); |
483 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
484 | } |
485 | ||
486 | ||
23dd4cce | 487 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 488 | { |
e244a915 | 489 | struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err); |
b97bf3fd | 490 | |
e244a915 AS |
491 | if (buf) { |
492 | struct tipc_msg *msg = buf_msg(buf); | |
493 | msg_swap_words(msg, 4, 5); | |
494 | msg_swap_words(msg, 6, 7); | |
495 | } | |
496 | return buf; | |
b97bf3fd PL |
497 | } |
498 | ||
499 | ||
23dd4cce | 500 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 501 | { |
e244a915 AS |
502 | struct sk_buff *buf; |
503 | struct tipc_msg *msg; | |
504 | u32 imp; | |
b97bf3fd | 505 | |
23dd4cce | 506 | if (!p_ptr->connected) |
1fc54d8f | 507 | return NULL; |
e244a915 AS |
508 | |
509 | buf = tipc_buf_acquire(BASIC_H_SIZE); | |
510 | if (buf) { | |
511 | msg = buf_msg(buf); | |
512 | memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE); | |
513 | msg_set_hdr_sz(msg, BASIC_H_SIZE); | |
514 | msg_set_size(msg, BASIC_H_SIZE); | |
515 | imp = msg_importance(msg); | |
516 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
517 | msg_set_importance(msg, ++imp); | |
518 | msg_set_errcode(msg, err); | |
519 | } | |
520 | return buf; | |
b97bf3fd PL |
521 | } |
522 | ||
247f0f3c | 523 | void tipc_port_proto_rcv(struct sk_buff *buf) |
b97bf3fd PL |
524 | { |
525 | struct tipc_msg *msg = buf_msg(buf); | |
1c1a551a | 526 | struct tipc_port *p_ptr; |
1fc54d8f | 527 | struct sk_buff *r_buf = NULL; |
1c1a551a AS |
528 | u32 destport = msg_destport(msg); |
529 | int wakeable; | |
530 | ||
531 | /* Validate connection */ | |
1c1a551a | 532 | p_ptr = tipc_port_lock(destport); |
f0712e86 | 533 | if (!p_ptr || !p_ptr->connected || !tipc_port_peer_msg(p_ptr, msg)) { |
f55b5640 AS |
534 | r_buf = tipc_buf_acquire(BASIC_H_SIZE); |
535 | if (r_buf) { | |
536 | msg = buf_msg(r_buf); | |
537 | tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG, | |
f0712e86 | 538 | BASIC_H_SIZE, msg_orignode(msg)); |
f55b5640 AS |
539 | msg_set_errcode(msg, TIPC_ERR_NO_PORT); |
540 | msg_set_origport(msg, destport); | |
f0712e86 | 541 | msg_set_destport(msg, msg_origport(msg)); |
f55b5640 | 542 | } |
1c1a551a AS |
543 | if (p_ptr) |
544 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
545 | goto exit; |
546 | } | |
547 | ||
1c1a551a | 548 | /* Process protocol message sent by peer */ |
1c1a551a AS |
549 | switch (msg_type(msg)) { |
550 | case CONN_ACK: | |
551 | wakeable = tipc_port_congested(p_ptr) && p_ptr->congested && | |
552 | p_ptr->wakeup; | |
553 | p_ptr->acked += msg_msgcnt(msg); | |
554 | if (!tipc_port_congested(p_ptr)) { | |
555 | p_ptr->congested = 0; | |
556 | if (wakeable) | |
557 | p_ptr->wakeup(p_ptr); | |
558 | } | |
559 | break; | |
560 | case CONN_PROBE: | |
e4a0aee4 | 561 | r_buf = port_build_proto_msg(p_ptr, CONN_PROBE_REPLY, 0); |
1c1a551a AS |
562 | break; |
563 | default: | |
564 | /* CONN_PROBE_REPLY or unrecognized - no action required */ | |
565 | break; | |
b97bf3fd PL |
566 | } |
567 | p_ptr->probing_state = CONFIRMED; | |
1c1a551a | 568 | tipc_port_unlock(p_ptr); |
b97bf3fd | 569 | exit: |
4323add6 | 570 | tipc_net_route_msg(r_buf); |
5f6d9123 | 571 | kfree_skb(buf); |
b97bf3fd PL |
572 | } |
573 | ||
dc1aed37 | 574 | static int port_print(struct tipc_port *p_ptr, char *buf, int len, int full_id) |
b97bf3fd | 575 | { |
c4307285 | 576 | struct publication *publ; |
dc1aed37 | 577 | int ret; |
b97bf3fd PL |
578 | |
579 | if (full_id) | |
dc1aed37 EH |
580 | ret = tipc_snprintf(buf, len, "<%u.%u.%u:%u>:", |
581 | tipc_zone(tipc_own_addr), | |
582 | tipc_cluster(tipc_own_addr), | |
583 | tipc_node(tipc_own_addr), p_ptr->ref); | |
b97bf3fd | 584 | else |
dc1aed37 | 585 | ret = tipc_snprintf(buf, len, "%-10u:", p_ptr->ref); |
b97bf3fd | 586 | |
23dd4cce | 587 | if (p_ptr->connected) { |
c4307285 YH |
588 | u32 dport = port_peerport(p_ptr); |
589 | u32 destnode = port_peernode(p_ptr); | |
590 | ||
dc1aed37 EH |
591 | ret += tipc_snprintf(buf + ret, len - ret, |
592 | " connected to <%u.%u.%u:%u>", | |
593 | tipc_zone(destnode), | |
594 | tipc_cluster(destnode), | |
595 | tipc_node(destnode), dport); | |
23dd4cce | 596 | if (p_ptr->conn_type != 0) |
dc1aed37 EH |
597 | ret += tipc_snprintf(buf + ret, len - ret, |
598 | " via {%u,%u}", p_ptr->conn_type, | |
599 | p_ptr->conn_instance); | |
23dd4cce | 600 | } else if (p_ptr->published) { |
dc1aed37 | 601 | ret += tipc_snprintf(buf + ret, len - ret, " bound to"); |
c4307285 | 602 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { |
b97bf3fd | 603 | if (publ->lower == publ->upper) |
dc1aed37 EH |
604 | ret += tipc_snprintf(buf + ret, len - ret, |
605 | " {%u,%u}", publ->type, | |
606 | publ->lower); | |
b97bf3fd | 607 | else |
dc1aed37 EH |
608 | ret += tipc_snprintf(buf + ret, len - ret, |
609 | " {%u,%u,%u}", publ->type, | |
610 | publ->lower, publ->upper); | |
c4307285 YH |
611 | } |
612 | } | |
dc1aed37 EH |
613 | ret += tipc_snprintf(buf + ret, len - ret, "\n"); |
614 | return ret; | |
b97bf3fd PL |
615 | } |
616 | ||
4323add6 | 617 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
618 | { |
619 | struct sk_buff *buf; | |
620 | struct tlv_desc *rep_tlv; | |
dc1aed37 EH |
621 | char *pb; |
622 | int pb_len; | |
23dd4cce | 623 | struct tipc_port *p_ptr; |
dc1aed37 | 624 | int str_len = 0; |
b97bf3fd | 625 | |
dc1aed37 | 626 | buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN)); |
b97bf3fd PL |
627 | if (!buf) |
628 | return NULL; | |
629 | rep_tlv = (struct tlv_desc *)buf->data; | |
dc1aed37 EH |
630 | pb = TLV_DATA(rep_tlv); |
631 | pb_len = ULTRA_STRING_MAX_LEN; | |
b97bf3fd | 632 | |
4323add6 | 633 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 634 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 635 | spin_lock_bh(p_ptr->lock); |
dc1aed37 | 636 | str_len += port_print(p_ptr, pb, pb_len, 0); |
23dd4cce | 637 | spin_unlock_bh(p_ptr->lock); |
b97bf3fd | 638 | } |
4323add6 | 639 | spin_unlock_bh(&tipc_port_list_lock); |
dc1aed37 | 640 | str_len += 1; /* for "\0" */ |
b97bf3fd PL |
641 | skb_put(buf, TLV_SPACE(str_len)); |
642 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
643 | ||
644 | return buf; | |
645 | } | |
646 | ||
4323add6 | 647 | void tipc_port_reinit(void) |
b97bf3fd | 648 | { |
23dd4cce | 649 | struct tipc_port *p_ptr; |
b97bf3fd PL |
650 | struct tipc_msg *msg; |
651 | ||
4323add6 | 652 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 653 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 654 | msg = &p_ptr->phdr; |
6d4a6672 | 655 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
656 | msg_set_orignode(msg, tipc_own_addr); |
657 | } | |
4323add6 | 658 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
659 | } |
660 | ||
b97bf3fd PL |
661 | void tipc_acknowledge(u32 ref, u32 ack) |
662 | { | |
23dd4cce | 663 | struct tipc_port *p_ptr; |
1fc54d8f | 664 | struct sk_buff *buf = NULL; |
b97bf3fd | 665 | |
4323add6 | 666 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
667 | if (!p_ptr) |
668 | return; | |
23dd4cce AS |
669 | if (p_ptr->connected) { |
670 | p_ptr->conn_unacked -= ack; | |
e4a0aee4 | 671 | buf = port_build_proto_msg(p_ptr, CONN_ACK, ack); |
b97bf3fd | 672 | } |
4323add6 PL |
673 | tipc_port_unlock(p_ptr); |
674 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
675 | } |
676 | ||
b97bf3fd PL |
677 | int tipc_portimportance(u32 ref, unsigned int *importance) |
678 | { | |
23dd4cce | 679 | struct tipc_port *p_ptr; |
c4307285 | 680 | |
4323add6 | 681 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
682 | if (!p_ptr) |
683 | return -EINVAL; | |
23dd4cce | 684 | *importance = (unsigned int)msg_importance(&p_ptr->phdr); |
4cec72c8 | 685 | tipc_port_unlock(p_ptr); |
0e35fd5e | 686 | return 0; |
b97bf3fd PL |
687 | } |
688 | ||
689 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
690 | { | |
23dd4cce | 691 | struct tipc_port *p_ptr; |
b97bf3fd PL |
692 | |
693 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
694 | return -EINVAL; | |
695 | ||
4323add6 | 696 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
697 | if (!p_ptr) |
698 | return -EINVAL; | |
23dd4cce | 699 | msg_set_importance(&p_ptr->phdr, (u32)imp); |
4cec72c8 | 700 | tipc_port_unlock(p_ptr); |
0e35fd5e | 701 | return 0; |
b97bf3fd PL |
702 | } |
703 | ||
704 | ||
84602761 YX |
705 | int tipc_publish(struct tipc_port *p_ptr, unsigned int scope, |
706 | struct tipc_name_seq const *seq) | |
b97bf3fd | 707 | { |
b97bf3fd PL |
708 | struct publication *publ; |
709 | u32 key; | |
b97bf3fd | 710 | |
84602761 | 711 | if (p_ptr->connected) |
d55b4c63 | 712 | return -EINVAL; |
84602761 YX |
713 | key = p_ptr->ref + p_ptr->pub_count + 1; |
714 | if (key == p_ptr->ref) | |
715 | return -EADDRINUSE; | |
d55b4c63 | 716 | |
4323add6 | 717 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
23dd4cce | 718 | scope, p_ptr->ref, key); |
b97bf3fd PL |
719 | if (publ) { |
720 | list_add(&publ->pport_list, &p_ptr->publications); | |
721 | p_ptr->pub_count++; | |
23dd4cce | 722 | p_ptr->published = 1; |
84602761 | 723 | return 0; |
b97bf3fd | 724 | } |
84602761 | 725 | return -EINVAL; |
b97bf3fd PL |
726 | } |
727 | ||
84602761 YX |
728 | int tipc_withdraw(struct tipc_port *p_ptr, unsigned int scope, |
729 | struct tipc_name_seq const *seq) | |
b97bf3fd | 730 | { |
b97bf3fd PL |
731 | struct publication *publ; |
732 | struct publication *tpubl; | |
733 | int res = -EINVAL; | |
c4307285 | 734 | |
b97bf3fd | 735 | if (!seq) { |
c4307285 | 736 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 737 | &p_ptr->publications, pport_list) { |
c4307285 | 738 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 739 | publ->ref, publ->key); |
b97bf3fd | 740 | } |
0e35fd5e | 741 | res = 0; |
b97bf3fd | 742 | } else { |
c4307285 | 743 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
744 | &p_ptr->publications, pport_list) { |
745 | if (publ->scope != scope) | |
746 | continue; | |
747 | if (publ->type != seq->type) | |
748 | continue; | |
749 | if (publ->lower != seq->lower) | |
750 | continue; | |
751 | if (publ->upper != seq->upper) | |
752 | break; | |
c4307285 | 753 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 754 | publ->ref, publ->key); |
0e35fd5e | 755 | res = 0; |
b97bf3fd PL |
756 | break; |
757 | } | |
758 | } | |
759 | if (list_empty(&p_ptr->publications)) | |
23dd4cce | 760 | p_ptr->published = 0; |
b97bf3fd PL |
761 | return res; |
762 | } | |
763 | ||
247f0f3c | 764 | int tipc_port_connect(u32 ref, struct tipc_portid const *peer) |
b97bf3fd | 765 | { |
23dd4cce | 766 | struct tipc_port *p_ptr; |
bc879117 | 767 | int res; |
b97bf3fd | 768 | |
4323add6 | 769 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
770 | if (!p_ptr) |
771 | return -EINVAL; | |
247f0f3c | 772 | res = __tipc_port_connect(ref, p_ptr, peer); |
bc879117 PG |
773 | tipc_port_unlock(p_ptr); |
774 | return res; | |
775 | } | |
776 | ||
777 | /* | |
247f0f3c | 778 | * __tipc_port_connect - connect to a remote peer |
bc879117 PG |
779 | * |
780 | * Port must be locked. | |
781 | */ | |
247f0f3c | 782 | int __tipc_port_connect(u32 ref, struct tipc_port *p_ptr, |
bc879117 PG |
783 | struct tipc_portid const *peer) |
784 | { | |
785 | struct tipc_msg *msg; | |
786 | int res = -EINVAL; | |
787 | ||
23dd4cce | 788 | if (p_ptr->published || p_ptr->connected) |
b97bf3fd PL |
789 | goto exit; |
790 | if (!peer->ref) | |
791 | goto exit; | |
792 | ||
23dd4cce | 793 | msg = &p_ptr->phdr; |
b97bf3fd PL |
794 | msg_set_destnode(msg, peer->node); |
795 | msg_set_destport(msg, peer->ref); | |
b97bf3fd | 796 | msg_set_type(msg, TIPC_CONN_MSG); |
53b94364 | 797 | msg_set_lookup_scope(msg, 0); |
08c80e9a | 798 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
799 | |
800 | p_ptr->probing_interval = PROBING_INTERVAL; | |
801 | p_ptr->probing_state = CONFIRMED; | |
23dd4cce | 802 | p_ptr->connected = 1; |
b97bf3fd PL |
803 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
804 | ||
0e65967e | 805 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 806 | (void *)(unsigned long)ref, |
b97bf3fd | 807 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 808 | res = 0; |
b97bf3fd | 809 | exit: |
23dd4cce | 810 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
811 | return res; |
812 | } | |
813 | ||
bc879117 PG |
814 | /* |
815 | * __tipc_disconnect - disconnect port from peer | |
0c3141e9 AS |
816 | * |
817 | * Port must be locked. | |
818 | */ | |
247f0f3c | 819 | int __tipc_port_disconnect(struct tipc_port *tp_ptr) |
0c3141e9 | 820 | { |
0c3141e9 AS |
821 | if (tp_ptr->connected) { |
822 | tp_ptr->connected = 0; | |
823 | /* let timer expire on it's own to avoid deadlock! */ | |
e3192690 | 824 | tipc_nodesub_unsubscribe(&tp_ptr->subscription); |
0cee6bbe | 825 | return 0; |
0c3141e9 | 826 | } |
0cee6bbe | 827 | |
828 | return -ENOTCONN; | |
0c3141e9 AS |
829 | } |
830 | ||
b97bf3fd | 831 | /* |
247f0f3c | 832 | * tipc_port_disconnect(): Disconnect port form peer. |
b97bf3fd PL |
833 | * This is a node local operation. |
834 | */ | |
247f0f3c | 835 | int tipc_port_disconnect(u32 ref) |
b97bf3fd | 836 | { |
23dd4cce | 837 | struct tipc_port *p_ptr; |
0c3141e9 | 838 | int res; |
b97bf3fd | 839 | |
4323add6 | 840 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
841 | if (!p_ptr) |
842 | return -EINVAL; | |
247f0f3c | 843 | res = __tipc_port_disconnect(p_ptr); |
4323add6 | 844 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
845 | return res; |
846 | } | |
847 | ||
848 | /* | |
247f0f3c | 849 | * tipc_port_shutdown(): Send a SHUTDOWN msg to peer and disconnect |
b97bf3fd | 850 | */ |
247f0f3c | 851 | int tipc_port_shutdown(u32 ref) |
b97bf3fd | 852 | { |
23dd4cce | 853 | struct tipc_port *p_ptr; |
1fc54d8f | 854 | struct sk_buff *buf = NULL; |
b97bf3fd | 855 | |
4323add6 | 856 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
857 | if (!p_ptr) |
858 | return -EINVAL; | |
859 | ||
e244a915 | 860 | buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN); |
4323add6 PL |
861 | tipc_port_unlock(p_ptr); |
862 | tipc_net_route_msg(buf); | |
247f0f3c | 863 | return tipc_port_disconnect(ref); |
b97bf3fd PL |
864 | } |
865 | ||
9b641251 | 866 | /** |
247f0f3c | 867 | * tipc_port_rcv - receive message from lower layer and deliver to port user |
9b641251 | 868 | */ |
247f0f3c | 869 | int tipc_port_rcv(struct sk_buff *buf) |
9b641251 AS |
870 | { |
871 | struct tipc_port *p_ptr; | |
872 | struct tipc_msg *msg = buf_msg(buf); | |
873 | u32 destport = msg_destport(msg); | |
874 | u32 dsz = msg_data_sz(msg); | |
875 | u32 err; | |
876 | ||
877 | /* forward unresolved named message */ | |
878 | if (unlikely(!destport)) { | |
879 | tipc_net_route_msg(buf); | |
880 | return dsz; | |
881 | } | |
882 | ||
883 | /* validate destination & pass to port, otherwise reject message */ | |
884 | p_ptr = tipc_port_lock(destport); | |
885 | if (likely(p_ptr)) { | |
9b641251 AS |
886 | err = p_ptr->dispatcher(p_ptr, buf); |
887 | tipc_port_unlock(p_ptr); | |
888 | if (likely(!err)) | |
889 | return dsz; | |
890 | } else { | |
891 | err = TIPC_ERR_NO_PORT; | |
892 | } | |
f0712e86 | 893 | |
9b641251 AS |
894 | return tipc_reject_msg(buf, err); |
895 | } | |
896 | ||
b97bf3fd | 897 | /* |
247f0f3c YX |
898 | * tipc_port_iovec_rcv: Concatenate and deliver sectioned |
899 | * message for this node. | |
b97bf3fd | 900 | */ |
247f0f3c YX |
901 | static int tipc_port_iovec_rcv(struct tipc_port *sender, |
902 | struct iovec const *msg_sect, | |
903 | unsigned int len) | |
b97bf3fd PL |
904 | { |
905 | struct sk_buff *buf; | |
906 | int res; | |
c4307285 | 907 | |
9446b87a | 908 | res = tipc_msg_build(&sender->phdr, msg_sect, len, MAX_MSG_SIZE, &buf); |
b97bf3fd | 909 | if (likely(buf)) |
247f0f3c | 910 | tipc_port_rcv(buf); |
b97bf3fd PL |
911 | return res; |
912 | } | |
913 | ||
914 | /** | |
915 | * tipc_send - send message sections on connection | |
916 | */ | |
9446b87a | 917 | int tipc_send(u32 ref, struct iovec const *msg_sect, unsigned int len) |
b97bf3fd | 918 | { |
23dd4cce | 919 | struct tipc_port *p_ptr; |
b97bf3fd PL |
920 | u32 destnode; |
921 | int res; | |
922 | ||
4323add6 | 923 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 924 | if (!p_ptr || !p_ptr->connected) |
b97bf3fd PL |
925 | return -EINVAL; |
926 | ||
23dd4cce | 927 | p_ptr->congested = 1; |
4323add6 | 928 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd | 929 | destnode = port_peernode(p_ptr); |
8a55fe74 | 930 | if (likely(!in_own_node(destnode))) |
247f0f3c YX |
931 | res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len, |
932 | destnode); | |
b97bf3fd | 933 | else |
247f0f3c | 934 | res = tipc_port_iovec_rcv(p_ptr, msg_sect, len); |
b97bf3fd PL |
935 | |
936 | if (likely(res != -ELINKCONG)) { | |
23dd4cce | 937 | p_ptr->congested = 0; |
cb7ce914 AS |
938 | if (res > 0) |
939 | p_ptr->sent++; | |
b97bf3fd PL |
940 | return res; |
941 | } | |
942 | } | |
943 | if (port_unreliable(p_ptr)) { | |
23dd4cce | 944 | p_ptr->congested = 0; |
9446b87a | 945 | return len; |
b97bf3fd PL |
946 | } |
947 | return -ELINKCONG; | |
948 | } | |
949 | ||
b97bf3fd | 950 | /** |
12bae479 | 951 | * tipc_send2name - send message sections to port name |
b97bf3fd | 952 | */ |
12bae479 | 953 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
9446b87a | 954 | struct iovec const *msg_sect, unsigned int len) |
b97bf3fd | 955 | { |
23dd4cce | 956 | struct tipc_port *p_ptr; |
b97bf3fd PL |
957 | struct tipc_msg *msg; |
958 | u32 destnode = domain; | |
9ccc2eb4 | 959 | u32 destport; |
b97bf3fd PL |
960 | int res; |
961 | ||
4323add6 | 962 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 963 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
964 | return -EINVAL; |
965 | ||
23dd4cce | 966 | msg = &p_ptr->phdr; |
b97bf3fd | 967 | msg_set_type(msg, TIPC_NAMED_MSG); |
741d9eb7 | 968 | msg_set_hdr_sz(msg, NAMED_H_SIZE); |
b97bf3fd PL |
969 | msg_set_nametype(msg, name->type); |
970 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 971 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 972 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
973 | msg_set_destnode(msg, destnode); |
974 | msg_set_destport(msg, destport); | |
975 | ||
bc9f8143 | 976 | if (likely(destport || destnode)) { |
8a55fe74 | 977 | if (likely(in_own_node(destnode))) |
247f0f3c | 978 | res = tipc_port_iovec_rcv(p_ptr, msg_sect, len); |
b8f683d1 | 979 | else if (tipc_own_addr) |
247f0f3c YX |
980 | res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len, |
981 | destnode); | |
b8f683d1 | 982 | else |
247f0f3c YX |
983 | res = tipc_port_iovec_reject(p_ptr, msg, msg_sect, |
984 | len, TIPC_ERR_NO_NODE); | |
cb7ce914 AS |
985 | if (likely(res != -ELINKCONG)) { |
986 | if (res > 0) | |
987 | p_ptr->sent++; | |
b97bf3fd | 988 | return res; |
cb7ce914 | 989 | } |
b97bf3fd | 990 | if (port_unreliable(p_ptr)) { |
9446b87a | 991 | return len; |
b97bf3fd PL |
992 | } |
993 | return -ELINKCONG; | |
994 | } | |
247f0f3c YX |
995 | return tipc_port_iovec_reject(p_ptr, msg, msg_sect, len, |
996 | TIPC_ERR_NO_NAME); | |
b97bf3fd PL |
997 | } |
998 | ||
999 | /** | |
12bae479 | 1000 | * tipc_send2port - send message sections to port identity |
b97bf3fd | 1001 | */ |
12bae479 | 1002 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
9446b87a | 1003 | struct iovec const *msg_sect, unsigned int len) |
b97bf3fd | 1004 | { |
23dd4cce | 1005 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1006 | struct tipc_msg *msg; |
1007 | int res; | |
1008 | ||
4323add6 | 1009 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1010 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1011 | return -EINVAL; |
1012 | ||
23dd4cce | 1013 | msg = &p_ptr->phdr; |
b97bf3fd | 1014 | msg_set_type(msg, TIPC_DIRECT_MSG); |
53b94364 | 1015 | msg_set_lookup_scope(msg, 0); |
b97bf3fd PL |
1016 | msg_set_destnode(msg, dest->node); |
1017 | msg_set_destport(msg, dest->ref); | |
741d9eb7 | 1018 | msg_set_hdr_sz(msg, BASIC_H_SIZE); |
cb7ce914 | 1019 | |
8a55fe74 | 1020 | if (in_own_node(dest->node)) |
247f0f3c | 1021 | res = tipc_port_iovec_rcv(p_ptr, msg_sect, len); |
b8f683d1 | 1022 | else if (tipc_own_addr) |
247f0f3c YX |
1023 | res = tipc_link_iovec_xmit_fast(p_ptr, msg_sect, len, |
1024 | dest->node); | |
b8f683d1 | 1025 | else |
247f0f3c | 1026 | res = tipc_port_iovec_reject(p_ptr, msg, msg_sect, len, |
9446b87a | 1027 | TIPC_ERR_NO_NODE); |
cb7ce914 AS |
1028 | if (likely(res != -ELINKCONG)) { |
1029 | if (res > 0) | |
1030 | p_ptr->sent++; | |
b97bf3fd | 1031 | return res; |
cb7ce914 | 1032 | } |
b97bf3fd | 1033 | if (port_unreliable(p_ptr)) { |
9446b87a | 1034 | return len; |
b97bf3fd PL |
1035 | } |
1036 | return -ELINKCONG; | |
1037 | } |