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, |
26896904 AS |
93 | u32 num_sect, struct iovec const *msg_sect, |
94 | unsigned int total_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); | |
26896904 | 117 | res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE, |
f1733d75 | 118 | &buf); |
b97bf3fd PL |
119 | if (unlikely(!buf)) |
120 | return res; | |
121 | ||
122 | /* Figure out where to send multicast message */ | |
4323add6 PL |
123 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
124 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
125 | |
126 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
127 | if (ext_targets) { |
128 | if (dports.count != 0) { | |
129 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
130 | if (ibuf == NULL) { | |
4323add6 | 131 | tipc_port_list_free(&dports); |
5f6d9123 | 132 | kfree_skb(buf); |
b97bf3fd PL |
133 | return -ENOMEM; |
134 | } | |
135 | } | |
4323add6 | 136 | res = tipc_bclink_send_msg(buf); |
a016892c | 137 | if ((res < 0) && (dports.count != 0)) |
5f6d9123 | 138 | kfree_skb(ibuf); |
b97bf3fd PL |
139 | } else { |
140 | ibuf = buf; | |
141 | } | |
142 | ||
143 | if (res >= 0) { | |
144 | if (ibuf) | |
4323add6 | 145 | tipc_port_recv_mcast(ibuf, &dports); |
b97bf3fd | 146 | } else { |
4323add6 | 147 | tipc_port_list_free(&dports); |
b97bf3fd PL |
148 | } |
149 | return res; | |
150 | } | |
151 | ||
152 | /** | |
4323add6 | 153 | * tipc_port_recv_mcast - deliver multicast message to all destination ports |
c4307285 | 154 | * |
b97bf3fd PL |
155 | * If there is no port list, perform a lookup to create one |
156 | */ | |
4584310b | 157 | void tipc_port_recv_mcast(struct sk_buff *buf, struct tipc_port_list *dp) |
b97bf3fd | 158 | { |
0e65967e | 159 | struct tipc_msg *msg; |
4584310b PG |
160 | struct tipc_port_list dports = {0, NULL, }; |
161 | struct tipc_port_list *item = dp; | |
b97bf3fd PL |
162 | int cnt = 0; |
163 | ||
b97bf3fd PL |
164 | msg = buf_msg(buf); |
165 | ||
166 | /* Create destination port list, if one wasn't supplied */ | |
b97bf3fd | 167 | if (dp == NULL) { |
4323add6 | 168 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
169 | msg_namelower(msg), |
170 | msg_nameupper(msg), | |
171 | TIPC_CLUSTER_SCOPE, | |
172 | &dports); | |
173 | item = dp = &dports; | |
174 | } | |
175 | ||
176 | /* Deliver a copy of message to each destination port */ | |
b97bf3fd | 177 | if (dp->count != 0) { |
7f47f5c7 | 178 | msg_set_destnode(msg, tipc_own_addr); |
b97bf3fd PL |
179 | if (dp->count == 1) { |
180 | msg_set_destport(msg, dp->ports[0]); | |
4323add6 PL |
181 | tipc_port_recv_msg(buf); |
182 | tipc_port_list_free(dp); | |
b97bf3fd PL |
183 | return; |
184 | } | |
185 | for (; cnt < dp->count; cnt++) { | |
186 | int index = cnt % PLSIZE; | |
187 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
188 | ||
189 | if (b == NULL) { | |
2cf8aa19 | 190 | pr_warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
191 | goto exit; |
192 | } | |
a016892c | 193 | if ((index == 0) && (cnt != 0)) |
b97bf3fd | 194 | item = item->next; |
0e65967e | 195 | msg_set_destport(buf_msg(b), item->ports[index]); |
4323add6 | 196 | tipc_port_recv_msg(b); |
b97bf3fd PL |
197 | } |
198 | } | |
199 | exit: | |
5f6d9123 | 200 | kfree_skb(buf); |
4323add6 | 201 | tipc_port_list_free(dp); |
b97bf3fd PL |
202 | } |
203 | ||
204 | /** | |
3c5db8e4 | 205 | * tipc_createport - create a generic TIPC port |
c4307285 | 206 | * |
0ea52241 | 207 | * Returns pointer to (locked) TIPC port, or NULL if unable to create it |
b97bf3fd | 208 | */ |
c0fee8ac | 209 | struct tipc_port *tipc_createport(struct sock *sk, |
ae8509c4 PG |
210 | u32 (*dispatcher)(struct tipc_port *, |
211 | struct sk_buff *), | |
212 | void (*wakeup)(struct tipc_port *), | |
213 | const u32 importance) | |
b97bf3fd | 214 | { |
23dd4cce | 215 | struct tipc_port *p_ptr; |
b97bf3fd PL |
216 | struct tipc_msg *msg; |
217 | u32 ref; | |
218 | ||
0da974f4 | 219 | p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC); |
a10bd924 | 220 | if (!p_ptr) { |
2cf8aa19 | 221 | pr_warn("Port creation failed, no memory\n"); |
0ea52241 | 222 | return NULL; |
b97bf3fd | 223 | } |
23dd4cce | 224 | ref = tipc_ref_acquire(p_ptr, &p_ptr->lock); |
b97bf3fd | 225 | if (!ref) { |
2cf8aa19 | 226 | pr_warn("Port creation failed, ref. table exhausted\n"); |
b97bf3fd | 227 | kfree(p_ptr); |
0ea52241 | 228 | return NULL; |
b97bf3fd PL |
229 | } |
230 | ||
c0fee8ac | 231 | p_ptr->sk = sk; |
23dd4cce AS |
232 | p_ptr->max_pkt = MAX_PKT_DEFAULT; |
233 | p_ptr->ref = ref; | |
b97bf3fd PL |
234 | INIT_LIST_HEAD(&p_ptr->wait_list); |
235 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd PL |
236 | p_ptr->dispatcher = dispatcher; |
237 | p_ptr->wakeup = wakeup; | |
b97bf3fd | 238 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
b97bf3fd PL |
239 | INIT_LIST_HEAD(&p_ptr->publications); |
240 | INIT_LIST_HEAD(&p_ptr->port_list); | |
f21536d1 AS |
241 | |
242 | /* | |
243 | * Must hold port list lock while initializing message header template | |
244 | * to ensure a change to node's own network address doesn't result | |
245 | * in template containing out-dated network address information | |
246 | */ | |
f21536d1 AS |
247 | spin_lock_bh(&tipc_port_list_lock); |
248 | msg = &p_ptr->phdr; | |
249 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0); | |
250 | msg_set_origport(msg, ref); | |
b97bf3fd | 251 | list_add_tail(&p_ptr->port_list, &ports); |
4323add6 | 252 | spin_unlock_bh(&tipc_port_list_lock); |
23dd4cce | 253 | return p_ptr; |
b97bf3fd PL |
254 | } |
255 | ||
256 | int tipc_deleteport(u32 ref) | |
257 | { | |
23dd4cce | 258 | struct tipc_port *p_ptr; |
1fc54d8f | 259 | struct sk_buff *buf = NULL; |
b97bf3fd | 260 | |
1fc54d8f | 261 | tipc_withdraw(ref, 0, NULL); |
4323add6 | 262 | p_ptr = tipc_port_lock(ref); |
c4307285 | 263 | if (!p_ptr) |
b97bf3fd PL |
264 | return -EINVAL; |
265 | ||
4323add6 PL |
266 | tipc_ref_discard(ref); |
267 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
268 | |
269 | k_cancel_timer(&p_ptr->timer); | |
23dd4cce | 270 | if (p_ptr->connected) { |
b97bf3fd | 271 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
4323add6 | 272 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b97bf3fd | 273 | } |
b97bf3fd | 274 | |
4323add6 | 275 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
276 | list_del(&p_ptr->port_list); |
277 | list_del(&p_ptr->wait_list); | |
4323add6 | 278 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
279 | k_term_timer(&p_ptr->timer); |
280 | kfree(p_ptr); | |
4323add6 | 281 | tipc_net_route_msg(buf); |
0e35fd5e | 282 | return 0; |
b97bf3fd PL |
283 | } |
284 | ||
23dd4cce | 285 | static int port_unreliable(struct tipc_port *p_ptr) |
b97bf3fd | 286 | { |
23dd4cce | 287 | return msg_src_droppable(&p_ptr->phdr); |
b97bf3fd PL |
288 | } |
289 | ||
290 | int tipc_portunreliable(u32 ref, unsigned int *isunreliable) | |
291 | { | |
23dd4cce | 292 | struct tipc_port *p_ptr; |
c4307285 | 293 | |
4323add6 | 294 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
295 | if (!p_ptr) |
296 | return -EINVAL; | |
297 | *isunreliable = port_unreliable(p_ptr); | |
4cec72c8 | 298 | tipc_port_unlock(p_ptr); |
0e35fd5e | 299 | return 0; |
b97bf3fd PL |
300 | } |
301 | ||
302 | int tipc_set_portunreliable(u32 ref, unsigned int isunreliable) | |
303 | { | |
23dd4cce | 304 | struct tipc_port *p_ptr; |
c4307285 | 305 | |
4323add6 | 306 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
307 | if (!p_ptr) |
308 | return -EINVAL; | |
23dd4cce | 309 | msg_set_src_droppable(&p_ptr->phdr, (isunreliable != 0)); |
4323add6 | 310 | tipc_port_unlock(p_ptr); |
0e35fd5e | 311 | return 0; |
b97bf3fd PL |
312 | } |
313 | ||
23dd4cce | 314 | static int port_unreturnable(struct tipc_port *p_ptr) |
b97bf3fd | 315 | { |
23dd4cce | 316 | return msg_dest_droppable(&p_ptr->phdr); |
b97bf3fd PL |
317 | } |
318 | ||
319 | int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable) | |
320 | { | |
23dd4cce | 321 | struct tipc_port *p_ptr; |
c4307285 | 322 | |
4323add6 | 323 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
324 | if (!p_ptr) |
325 | return -EINVAL; | |
326 | *isunrejectable = port_unreturnable(p_ptr); | |
4cec72c8 | 327 | tipc_port_unlock(p_ptr); |
0e35fd5e | 328 | return 0; |
b97bf3fd PL |
329 | } |
330 | ||
331 | int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable) | |
332 | { | |
23dd4cce | 333 | struct tipc_port *p_ptr; |
c4307285 | 334 | |
4323add6 | 335 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
336 | if (!p_ptr) |
337 | return -EINVAL; | |
23dd4cce | 338 | msg_set_dest_droppable(&p_ptr->phdr, (isunrejectable != 0)); |
4323add6 | 339 | tipc_port_unlock(p_ptr); |
0e35fd5e | 340 | return 0; |
b97bf3fd PL |
341 | } |
342 | ||
c4307285 | 343 | /* |
e4a0aee4 AS |
344 | * port_build_proto_msg(): create connection protocol message for port |
345 | * | |
346 | * On entry the port must be locked and connected. | |
b97bf3fd | 347 | */ |
e4a0aee4 AS |
348 | static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr, |
349 | u32 type, u32 ack) | |
b97bf3fd PL |
350 | { |
351 | struct sk_buff *buf; | |
352 | struct tipc_msg *msg; | |
c4307285 | 353 | |
741d9eb7 | 354 | buf = tipc_buf_acquire(INT_H_SIZE); |
b97bf3fd PL |
355 | if (buf) { |
356 | msg = buf_msg(buf); | |
e4a0aee4 AS |
357 | tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE, |
358 | port_peernode(p_ptr)); | |
359 | msg_set_destport(msg, port_peerport(p_ptr)); | |
360 | msg_set_origport(msg, p_ptr->ref); | |
b97bf3fd | 361 | msg_set_msgcnt(msg, ack); |
b97bf3fd PL |
362 | } |
363 | return buf; | |
364 | } | |
365 | ||
b97bf3fd PL |
366 | int tipc_reject_msg(struct sk_buff *buf, u32 err) |
367 | { | |
368 | struct tipc_msg *msg = buf_msg(buf); | |
369 | struct sk_buff *rbuf; | |
370 | struct tipc_msg *rmsg; | |
371 | int hdr_sz; | |
7dd1bf28 | 372 | u32 imp; |
b97bf3fd | 373 | u32 data_sz = msg_data_sz(msg); |
017dac31 | 374 | u32 src_node; |
7dd1bf28 | 375 | u32 rmsg_sz; |
b97bf3fd PL |
376 | |
377 | /* discard rejected message if it shouldn't be returned to sender */ | |
76d12527 AS |
378 | if (WARN(!msg_isdata(msg), |
379 | "attempt to reject message with user=%u", msg_user(msg))) { | |
380 | dump_stack(); | |
381 | goto exit; | |
382 | } | |
acc631bf AS |
383 | if (msg_errcode(msg) || msg_dest_droppable(msg)) |
384 | goto exit; | |
b97bf3fd | 385 | |
7dd1bf28 AS |
386 | /* |
387 | * construct returned message by copying rejected message header and | |
388 | * data (or subset), then updating header fields that need adjusting | |
389 | */ | |
7dd1bf28 AS |
390 | hdr_sz = msg_hdr_sz(msg); |
391 | rmsg_sz = hdr_sz + min_t(u32, data_sz, MAX_REJECT_SIZE); | |
392 | ||
393 | rbuf = tipc_buf_acquire(rmsg_sz); | |
acc631bf AS |
394 | if (rbuf == NULL) |
395 | goto exit; | |
396 | ||
b97bf3fd | 397 | rmsg = buf_msg(rbuf); |
7dd1bf28 AS |
398 | skb_copy_to_linear_data(rbuf, msg, rmsg_sz); |
399 | ||
400 | if (msg_connected(rmsg)) { | |
401 | imp = msg_importance(rmsg); | |
402 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
403 | msg_set_importance(rmsg, ++imp); | |
99c14593 | 404 | } |
7dd1bf28 AS |
405 | msg_set_non_seq(rmsg, 0); |
406 | msg_set_size(rmsg, rmsg_sz); | |
407 | msg_set_errcode(rmsg, err); | |
408 | msg_set_prevnode(rmsg, tipc_own_addr); | |
409 | msg_swap_words(rmsg, 4, 5); | |
410 | if (!msg_short(rmsg)) | |
411 | msg_swap_words(rmsg, 6, 7); | |
b97bf3fd PL |
412 | |
413 | /* send self-abort message when rejecting on a connected port */ | |
414 | if (msg_connected(msg)) { | |
23dd4cce | 415 | struct tipc_port *p_ptr = tipc_port_lock(msg_destport(msg)); |
b97bf3fd PL |
416 | |
417 | if (p_ptr) { | |
dff10e9e AS |
418 | struct sk_buff *abuf = NULL; |
419 | ||
23dd4cce | 420 | if (p_ptr->connected) |
b97bf3fd | 421 | abuf = port_build_self_abort_msg(p_ptr, err); |
4323add6 | 422 | tipc_port_unlock(p_ptr); |
dff10e9e | 423 | tipc_net_route_msg(abuf); |
b97bf3fd | 424 | } |
b97bf3fd PL |
425 | } |
426 | ||
acc631bf | 427 | /* send returned message & dispose of rejected message */ |
017dac31 | 428 | src_node = msg_prevnode(msg); |
630d920d | 429 | if (in_own_node(src_node)) |
017dac31 AS |
430 | tipc_port_recv_msg(rbuf); |
431 | else | |
432 | tipc_link_send(rbuf, src_node, msg_link_selector(rmsg)); | |
acc631bf | 433 | exit: |
5f6d9123 | 434 | kfree_skb(buf); |
b97bf3fd PL |
435 | return data_sz; |
436 | } | |
437 | ||
23dd4cce | 438 | int tipc_port_reject_sections(struct tipc_port *p_ptr, struct tipc_msg *hdr, |
4323add6 | 439 | struct iovec const *msg_sect, u32 num_sect, |
26896904 | 440 | unsigned int total_len, int err) |
b97bf3fd PL |
441 | { |
442 | struct sk_buff *buf; | |
443 | int res; | |
444 | ||
26896904 | 445 | res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE, |
f1733d75 | 446 | &buf); |
b97bf3fd PL |
447 | if (!buf) |
448 | return res; | |
449 | ||
450 | return tipc_reject_msg(buf, err); | |
451 | } | |
452 | ||
453 | static void port_timeout(unsigned long ref) | |
454 | { | |
23dd4cce | 455 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 456 | struct sk_buff *buf = NULL; |
b97bf3fd | 457 | |
065fd177 AS |
458 | if (!p_ptr) |
459 | return; | |
460 | ||
23dd4cce | 461 | if (!p_ptr->connected) { |
065fd177 | 462 | tipc_port_unlock(p_ptr); |
b97bf3fd | 463 | return; |
065fd177 | 464 | } |
b97bf3fd PL |
465 | |
466 | /* Last probe answered ? */ | |
467 | if (p_ptr->probing_state == PROBING) { | |
468 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); | |
469 | } else { | |
e4a0aee4 | 470 | buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0); |
b97bf3fd PL |
471 | p_ptr->probing_state = PROBING; |
472 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); | |
473 | } | |
4323add6 PL |
474 | tipc_port_unlock(p_ptr); |
475 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
476 | } |
477 | ||
478 | ||
479 | static void port_handle_node_down(unsigned long ref) | |
480 | { | |
23dd4cce | 481 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
0e65967e | 482 | struct sk_buff *buf = NULL; |
b97bf3fd PL |
483 | |
484 | if (!p_ptr) | |
485 | return; | |
486 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 PL |
487 | tipc_port_unlock(p_ptr); |
488 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
489 | } |
490 | ||
491 | ||
23dd4cce | 492 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 493 | { |
e244a915 | 494 | struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err); |
b97bf3fd | 495 | |
e244a915 AS |
496 | if (buf) { |
497 | struct tipc_msg *msg = buf_msg(buf); | |
498 | msg_swap_words(msg, 4, 5); | |
499 | msg_swap_words(msg, 6, 7); | |
500 | } | |
501 | return buf; | |
b97bf3fd PL |
502 | } |
503 | ||
504 | ||
23dd4cce | 505 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 506 | { |
e244a915 AS |
507 | struct sk_buff *buf; |
508 | struct tipc_msg *msg; | |
509 | u32 imp; | |
b97bf3fd | 510 | |
23dd4cce | 511 | if (!p_ptr->connected) |
1fc54d8f | 512 | return NULL; |
e244a915 AS |
513 | |
514 | buf = tipc_buf_acquire(BASIC_H_SIZE); | |
515 | if (buf) { | |
516 | msg = buf_msg(buf); | |
517 | memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE); | |
518 | msg_set_hdr_sz(msg, BASIC_H_SIZE); | |
519 | msg_set_size(msg, BASIC_H_SIZE); | |
520 | imp = msg_importance(msg); | |
521 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
522 | msg_set_importance(msg, ++imp); | |
523 | msg_set_errcode(msg, err); | |
524 | } | |
525 | return buf; | |
b97bf3fd PL |
526 | } |
527 | ||
4323add6 | 528 | void tipc_port_recv_proto_msg(struct sk_buff *buf) |
b97bf3fd PL |
529 | { |
530 | struct tipc_msg *msg = buf_msg(buf); | |
1c1a551a | 531 | struct tipc_port *p_ptr; |
1fc54d8f | 532 | struct sk_buff *r_buf = NULL; |
1c1a551a AS |
533 | u32 destport = msg_destport(msg); |
534 | int wakeable; | |
535 | ||
536 | /* Validate connection */ | |
1c1a551a | 537 | p_ptr = tipc_port_lock(destport); |
f0712e86 | 538 | if (!p_ptr || !p_ptr->connected || !tipc_port_peer_msg(p_ptr, msg)) { |
f55b5640 AS |
539 | r_buf = tipc_buf_acquire(BASIC_H_SIZE); |
540 | if (r_buf) { | |
541 | msg = buf_msg(r_buf); | |
542 | tipc_msg_init(msg, TIPC_HIGH_IMPORTANCE, TIPC_CONN_MSG, | |
f0712e86 | 543 | BASIC_H_SIZE, msg_orignode(msg)); |
f55b5640 AS |
544 | msg_set_errcode(msg, TIPC_ERR_NO_PORT); |
545 | msg_set_origport(msg, destport); | |
f0712e86 | 546 | msg_set_destport(msg, msg_origport(msg)); |
f55b5640 | 547 | } |
1c1a551a AS |
548 | if (p_ptr) |
549 | tipc_port_unlock(p_ptr); | |
b97bf3fd PL |
550 | goto exit; |
551 | } | |
552 | ||
1c1a551a | 553 | /* Process protocol message sent by peer */ |
1c1a551a AS |
554 | switch (msg_type(msg)) { |
555 | case CONN_ACK: | |
556 | wakeable = tipc_port_congested(p_ptr) && p_ptr->congested && | |
557 | p_ptr->wakeup; | |
558 | p_ptr->acked += msg_msgcnt(msg); | |
559 | if (!tipc_port_congested(p_ptr)) { | |
560 | p_ptr->congested = 0; | |
561 | if (wakeable) | |
562 | p_ptr->wakeup(p_ptr); | |
563 | } | |
564 | break; | |
565 | case CONN_PROBE: | |
e4a0aee4 | 566 | r_buf = port_build_proto_msg(p_ptr, CONN_PROBE_REPLY, 0); |
1c1a551a AS |
567 | break; |
568 | default: | |
569 | /* CONN_PROBE_REPLY or unrecognized - no action required */ | |
570 | break; | |
b97bf3fd PL |
571 | } |
572 | p_ptr->probing_state = CONFIRMED; | |
1c1a551a | 573 | tipc_port_unlock(p_ptr); |
b97bf3fd | 574 | exit: |
4323add6 | 575 | tipc_net_route_msg(r_buf); |
5f6d9123 | 576 | kfree_skb(buf); |
b97bf3fd PL |
577 | } |
578 | ||
dc1aed37 | 579 | static int port_print(struct tipc_port *p_ptr, char *buf, int len, int full_id) |
b97bf3fd | 580 | { |
c4307285 | 581 | struct publication *publ; |
dc1aed37 | 582 | int ret; |
b97bf3fd PL |
583 | |
584 | if (full_id) | |
dc1aed37 EH |
585 | ret = tipc_snprintf(buf, len, "<%u.%u.%u:%u>:", |
586 | tipc_zone(tipc_own_addr), | |
587 | tipc_cluster(tipc_own_addr), | |
588 | tipc_node(tipc_own_addr), p_ptr->ref); | |
b97bf3fd | 589 | else |
dc1aed37 | 590 | ret = tipc_snprintf(buf, len, "%-10u:", p_ptr->ref); |
b97bf3fd | 591 | |
23dd4cce | 592 | if (p_ptr->connected) { |
c4307285 YH |
593 | u32 dport = port_peerport(p_ptr); |
594 | u32 destnode = port_peernode(p_ptr); | |
595 | ||
dc1aed37 EH |
596 | ret += tipc_snprintf(buf + ret, len - ret, |
597 | " connected to <%u.%u.%u:%u>", | |
598 | tipc_zone(destnode), | |
599 | tipc_cluster(destnode), | |
600 | tipc_node(destnode), dport); | |
23dd4cce | 601 | if (p_ptr->conn_type != 0) |
dc1aed37 EH |
602 | ret += tipc_snprintf(buf + ret, len - ret, |
603 | " via {%u,%u}", p_ptr->conn_type, | |
604 | p_ptr->conn_instance); | |
23dd4cce | 605 | } else if (p_ptr->published) { |
dc1aed37 | 606 | ret += tipc_snprintf(buf + ret, len - ret, " bound to"); |
c4307285 | 607 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { |
b97bf3fd | 608 | if (publ->lower == publ->upper) |
dc1aed37 EH |
609 | ret += tipc_snprintf(buf + ret, len - ret, |
610 | " {%u,%u}", publ->type, | |
611 | publ->lower); | |
b97bf3fd | 612 | else |
dc1aed37 EH |
613 | ret += tipc_snprintf(buf + ret, len - ret, |
614 | " {%u,%u,%u}", publ->type, | |
615 | publ->lower, publ->upper); | |
c4307285 YH |
616 | } |
617 | } | |
dc1aed37 EH |
618 | ret += tipc_snprintf(buf + ret, len - ret, "\n"); |
619 | return ret; | |
b97bf3fd PL |
620 | } |
621 | ||
4323add6 | 622 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
623 | { |
624 | struct sk_buff *buf; | |
625 | struct tlv_desc *rep_tlv; | |
dc1aed37 EH |
626 | char *pb; |
627 | int pb_len; | |
23dd4cce | 628 | struct tipc_port *p_ptr; |
dc1aed37 | 629 | int str_len = 0; |
b97bf3fd | 630 | |
dc1aed37 | 631 | buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN)); |
b97bf3fd PL |
632 | if (!buf) |
633 | return NULL; | |
634 | rep_tlv = (struct tlv_desc *)buf->data; | |
dc1aed37 EH |
635 | pb = TLV_DATA(rep_tlv); |
636 | pb_len = ULTRA_STRING_MAX_LEN; | |
b97bf3fd | 637 | |
4323add6 | 638 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 639 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 640 | spin_lock_bh(p_ptr->lock); |
dc1aed37 | 641 | str_len += port_print(p_ptr, pb, pb_len, 0); |
23dd4cce | 642 | spin_unlock_bh(p_ptr->lock); |
b97bf3fd | 643 | } |
4323add6 | 644 | spin_unlock_bh(&tipc_port_list_lock); |
dc1aed37 | 645 | str_len += 1; /* for "\0" */ |
b97bf3fd PL |
646 | skb_put(buf, TLV_SPACE(str_len)); |
647 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
648 | ||
649 | return buf; | |
650 | } | |
651 | ||
4323add6 | 652 | void tipc_port_reinit(void) |
b97bf3fd | 653 | { |
23dd4cce | 654 | struct tipc_port *p_ptr; |
b97bf3fd PL |
655 | struct tipc_msg *msg; |
656 | ||
4323add6 | 657 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 658 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 659 | msg = &p_ptr->phdr; |
6d4a6672 | 660 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
661 | msg_set_orignode(msg, tipc_own_addr); |
662 | } | |
4323add6 | 663 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
664 | } |
665 | ||
b97bf3fd PL |
666 | void tipc_acknowledge(u32 ref, u32 ack) |
667 | { | |
23dd4cce | 668 | struct tipc_port *p_ptr; |
1fc54d8f | 669 | struct sk_buff *buf = NULL; |
b97bf3fd | 670 | |
4323add6 | 671 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
672 | if (!p_ptr) |
673 | return; | |
23dd4cce AS |
674 | if (p_ptr->connected) { |
675 | p_ptr->conn_unacked -= ack; | |
e4a0aee4 | 676 | buf = port_build_proto_msg(p_ptr, CONN_ACK, ack); |
b97bf3fd | 677 | } |
4323add6 PL |
678 | tipc_port_unlock(p_ptr); |
679 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
680 | } |
681 | ||
b97bf3fd PL |
682 | int tipc_portimportance(u32 ref, unsigned int *importance) |
683 | { | |
23dd4cce | 684 | struct tipc_port *p_ptr; |
c4307285 | 685 | |
4323add6 | 686 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
687 | if (!p_ptr) |
688 | return -EINVAL; | |
23dd4cce | 689 | *importance = (unsigned int)msg_importance(&p_ptr->phdr); |
4cec72c8 | 690 | tipc_port_unlock(p_ptr); |
0e35fd5e | 691 | return 0; |
b97bf3fd PL |
692 | } |
693 | ||
694 | int tipc_set_portimportance(u32 ref, unsigned int imp) | |
695 | { | |
23dd4cce | 696 | struct tipc_port *p_ptr; |
b97bf3fd PL |
697 | |
698 | if (imp > TIPC_CRITICAL_IMPORTANCE) | |
699 | return -EINVAL; | |
700 | ||
4323add6 | 701 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
702 | if (!p_ptr) |
703 | return -EINVAL; | |
23dd4cce | 704 | msg_set_importance(&p_ptr->phdr, (u32)imp); |
4cec72c8 | 705 | tipc_port_unlock(p_ptr); |
0e35fd5e | 706 | return 0; |
b97bf3fd PL |
707 | } |
708 | ||
709 | ||
710 | int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
711 | { | |
23dd4cce | 712 | struct tipc_port *p_ptr; |
b97bf3fd PL |
713 | struct publication *publ; |
714 | u32 key; | |
715 | int res = -EINVAL; | |
716 | ||
4323add6 | 717 | p_ptr = tipc_port_lock(ref); |
d55b4c63 AB |
718 | if (!p_ptr) |
719 | return -EINVAL; | |
720 | ||
23dd4cce | 721 | if (p_ptr->connected) |
b97bf3fd | 722 | goto exit; |
b97bf3fd PL |
723 | key = ref + p_ptr->pub_count + 1; |
724 | if (key == ref) { | |
725 | res = -EADDRINUSE; | |
726 | goto exit; | |
727 | } | |
4323add6 | 728 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
23dd4cce | 729 | scope, p_ptr->ref, key); |
b97bf3fd PL |
730 | if (publ) { |
731 | list_add(&publ->pport_list, &p_ptr->publications); | |
732 | p_ptr->pub_count++; | |
23dd4cce | 733 | p_ptr->published = 1; |
0e35fd5e | 734 | res = 0; |
b97bf3fd PL |
735 | } |
736 | exit: | |
4323add6 | 737 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
738 | return res; |
739 | } | |
740 | ||
741 | int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq) | |
742 | { | |
23dd4cce | 743 | struct tipc_port *p_ptr; |
b97bf3fd PL |
744 | struct publication *publ; |
745 | struct publication *tpubl; | |
746 | int res = -EINVAL; | |
c4307285 | 747 | |
4323add6 | 748 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
749 | if (!p_ptr) |
750 | return -EINVAL; | |
b97bf3fd | 751 | if (!seq) { |
c4307285 | 752 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 753 | &p_ptr->publications, pport_list) { |
c4307285 | 754 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 755 | publ->ref, publ->key); |
b97bf3fd | 756 | } |
0e35fd5e | 757 | res = 0; |
b97bf3fd | 758 | } else { |
c4307285 | 759 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
760 | &p_ptr->publications, pport_list) { |
761 | if (publ->scope != scope) | |
762 | continue; | |
763 | if (publ->type != seq->type) | |
764 | continue; | |
765 | if (publ->lower != seq->lower) | |
766 | continue; | |
767 | if (publ->upper != seq->upper) | |
768 | break; | |
c4307285 | 769 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 770 | publ->ref, publ->key); |
0e35fd5e | 771 | res = 0; |
b97bf3fd PL |
772 | break; |
773 | } | |
774 | } | |
775 | if (list_empty(&p_ptr->publications)) | |
23dd4cce | 776 | p_ptr->published = 0; |
4323add6 | 777 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
778 | return res; |
779 | } | |
780 | ||
bc879117 | 781 | int tipc_connect(u32 ref, struct tipc_portid const *peer) |
b97bf3fd | 782 | { |
23dd4cce | 783 | struct tipc_port *p_ptr; |
bc879117 | 784 | int res; |
b97bf3fd | 785 | |
4323add6 | 786 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
787 | if (!p_ptr) |
788 | return -EINVAL; | |
bc879117 PG |
789 | res = __tipc_connect(ref, p_ptr, peer); |
790 | tipc_port_unlock(p_ptr); | |
791 | return res; | |
792 | } | |
793 | ||
794 | /* | |
795 | * __tipc_connect - connect to a remote peer | |
796 | * | |
797 | * Port must be locked. | |
798 | */ | |
799 | int __tipc_connect(u32 ref, struct tipc_port *p_ptr, | |
800 | struct tipc_portid const *peer) | |
801 | { | |
802 | struct tipc_msg *msg; | |
803 | int res = -EINVAL; | |
804 | ||
23dd4cce | 805 | if (p_ptr->published || p_ptr->connected) |
b97bf3fd PL |
806 | goto exit; |
807 | if (!peer->ref) | |
808 | goto exit; | |
809 | ||
23dd4cce | 810 | msg = &p_ptr->phdr; |
b97bf3fd PL |
811 | msg_set_destnode(msg, peer->node); |
812 | msg_set_destport(msg, peer->ref); | |
b97bf3fd | 813 | msg_set_type(msg, TIPC_CONN_MSG); |
53b94364 | 814 | msg_set_lookup_scope(msg, 0); |
08c80e9a | 815 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
816 | |
817 | p_ptr->probing_interval = PROBING_INTERVAL; | |
818 | p_ptr->probing_state = CONFIRMED; | |
23dd4cce | 819 | p_ptr->connected = 1; |
b97bf3fd PL |
820 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
821 | ||
0e65967e | 822 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 823 | (void *)(unsigned long)ref, |
b97bf3fd | 824 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 825 | res = 0; |
b97bf3fd | 826 | exit: |
23dd4cce | 827 | p_ptr->max_pkt = tipc_link_get_max_pkt(peer->node, ref); |
b97bf3fd PL |
828 | return res; |
829 | } | |
830 | ||
bc879117 PG |
831 | /* |
832 | * __tipc_disconnect - disconnect port from peer | |
0c3141e9 AS |
833 | * |
834 | * Port must be locked. | |
835 | */ | |
bc879117 | 836 | int __tipc_disconnect(struct tipc_port *tp_ptr) |
0c3141e9 AS |
837 | { |
838 | int res; | |
839 | ||
840 | if (tp_ptr->connected) { | |
841 | tp_ptr->connected = 0; | |
842 | /* let timer expire on it's own to avoid deadlock! */ | |
e3192690 | 843 | tipc_nodesub_unsubscribe(&tp_ptr->subscription); |
0e35fd5e | 844 | res = 0; |
0c3141e9 AS |
845 | } else { |
846 | res = -ENOTCONN; | |
847 | } | |
848 | return res; | |
849 | } | |
850 | ||
b97bf3fd PL |
851 | /* |
852 | * tipc_disconnect(): Disconnect port form peer. | |
853 | * This is a node local operation. | |
854 | */ | |
b97bf3fd PL |
855 | int tipc_disconnect(u32 ref) |
856 | { | |
23dd4cce | 857 | struct tipc_port *p_ptr; |
0c3141e9 | 858 | int res; |
b97bf3fd | 859 | |
4323add6 | 860 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
861 | if (!p_ptr) |
862 | return -EINVAL; | |
bc879117 | 863 | res = __tipc_disconnect(p_ptr); |
4323add6 | 864 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
865 | return res; |
866 | } | |
867 | ||
868 | /* | |
869 | * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect | |
870 | */ | |
871 | int tipc_shutdown(u32 ref) | |
872 | { | |
23dd4cce | 873 | struct tipc_port *p_ptr; |
1fc54d8f | 874 | struct sk_buff *buf = NULL; |
b97bf3fd | 875 | |
4323add6 | 876 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
877 | if (!p_ptr) |
878 | return -EINVAL; | |
879 | ||
e244a915 | 880 | buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN); |
4323add6 PL |
881 | tipc_port_unlock(p_ptr); |
882 | tipc_net_route_msg(buf); | |
b97bf3fd PL |
883 | return tipc_disconnect(ref); |
884 | } | |
885 | ||
9b641251 AS |
886 | /** |
887 | * tipc_port_recv_msg - receive message from lower layer and deliver to port user | |
888 | */ | |
9b641251 AS |
889 | int tipc_port_recv_msg(struct sk_buff *buf) |
890 | { | |
891 | struct tipc_port *p_ptr; | |
892 | struct tipc_msg *msg = buf_msg(buf); | |
893 | u32 destport = msg_destport(msg); | |
894 | u32 dsz = msg_data_sz(msg); | |
895 | u32 err; | |
896 | ||
897 | /* forward unresolved named message */ | |
898 | if (unlikely(!destport)) { | |
899 | tipc_net_route_msg(buf); | |
900 | return dsz; | |
901 | } | |
902 | ||
903 | /* validate destination & pass to port, otherwise reject message */ | |
904 | p_ptr = tipc_port_lock(destport); | |
905 | if (likely(p_ptr)) { | |
9b641251 AS |
906 | err = p_ptr->dispatcher(p_ptr, buf); |
907 | tipc_port_unlock(p_ptr); | |
908 | if (likely(!err)) | |
909 | return dsz; | |
910 | } else { | |
911 | err = TIPC_ERR_NO_PORT; | |
912 | } | |
f0712e86 | 913 | |
9b641251 AS |
914 | return tipc_reject_msg(buf, err); |
915 | } | |
916 | ||
b97bf3fd | 917 | /* |
4323add6 | 918 | * tipc_port_recv_sections(): Concatenate and deliver sectioned |
b97bf3fd PL |
919 | * message for this node. |
920 | */ | |
23dd4cce | 921 | static int tipc_port_recv_sections(struct tipc_port *sender, unsigned int num_sect, |
26896904 AS |
922 | struct iovec const *msg_sect, |
923 | unsigned int total_len) | |
b97bf3fd PL |
924 | { |
925 | struct sk_buff *buf; | |
926 | int res; | |
c4307285 | 927 | |
26896904 | 928 | res = tipc_msg_build(&sender->phdr, msg_sect, num_sect, total_len, |
f1733d75 | 929 | MAX_MSG_SIZE, &buf); |
b97bf3fd | 930 | if (likely(buf)) |
4323add6 | 931 | tipc_port_recv_msg(buf); |
b97bf3fd PL |
932 | return res; |
933 | } | |
934 | ||
935 | /** | |
936 | * tipc_send - send message sections on connection | |
937 | */ | |
26896904 AS |
938 | int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect, |
939 | unsigned int total_len) | |
b97bf3fd | 940 | { |
23dd4cce | 941 | struct tipc_port *p_ptr; |
b97bf3fd PL |
942 | u32 destnode; |
943 | int res; | |
944 | ||
4323add6 | 945 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 946 | if (!p_ptr || !p_ptr->connected) |
b97bf3fd PL |
947 | return -EINVAL; |
948 | ||
23dd4cce | 949 | p_ptr->congested = 1; |
4323add6 | 950 | if (!tipc_port_congested(p_ptr)) { |
b97bf3fd | 951 | destnode = port_peernode(p_ptr); |
8a55fe74 | 952 | if (likely(!in_own_node(destnode))) |
4323add6 | 953 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
26896904 | 954 | total_len, destnode); |
b97bf3fd | 955 | else |
26896904 AS |
956 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, |
957 | total_len); | |
b97bf3fd PL |
958 | |
959 | if (likely(res != -ELINKCONG)) { | |
23dd4cce | 960 | p_ptr->congested = 0; |
cb7ce914 AS |
961 | if (res > 0) |
962 | p_ptr->sent++; | |
b97bf3fd PL |
963 | return res; |
964 | } | |
965 | } | |
966 | if (port_unreliable(p_ptr)) { | |
23dd4cce | 967 | p_ptr->congested = 0; |
26896904 | 968 | return total_len; |
b97bf3fd PL |
969 | } |
970 | return -ELINKCONG; | |
971 | } | |
972 | ||
b97bf3fd | 973 | /** |
12bae479 | 974 | * tipc_send2name - send message sections to port name |
b97bf3fd | 975 | */ |
12bae479 | 976 | int tipc_send2name(u32 ref, struct tipc_name const *name, unsigned int domain, |
26896904 AS |
977 | unsigned int num_sect, struct iovec const *msg_sect, |
978 | unsigned int total_len) | |
b97bf3fd | 979 | { |
23dd4cce | 980 | struct tipc_port *p_ptr; |
b97bf3fd PL |
981 | struct tipc_msg *msg; |
982 | u32 destnode = domain; | |
9ccc2eb4 | 983 | u32 destport; |
b97bf3fd PL |
984 | int res; |
985 | ||
4323add6 | 986 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 987 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
988 | return -EINVAL; |
989 | ||
23dd4cce | 990 | msg = &p_ptr->phdr; |
b97bf3fd | 991 | msg_set_type(msg, TIPC_NAMED_MSG); |
741d9eb7 | 992 | msg_set_hdr_sz(msg, NAMED_H_SIZE); |
b97bf3fd PL |
993 | msg_set_nametype(msg, name->type); |
994 | msg_set_nameinst(msg, name->instance); | |
c68ca7b7 | 995 | msg_set_lookup_scope(msg, tipc_addr_scope(domain)); |
4323add6 | 996 | destport = tipc_nametbl_translate(name->type, name->instance, &destnode); |
b97bf3fd PL |
997 | msg_set_destnode(msg, destnode); |
998 | msg_set_destport(msg, destport); | |
999 | ||
bc9f8143 | 1000 | if (likely(destport || destnode)) { |
8a55fe74 | 1001 | if (likely(in_own_node(destnode))) |
cb7ce914 | 1002 | res = tipc_port_recv_sections(p_ptr, num_sect, |
26896904 | 1003 | msg_sect, total_len); |
b8f683d1 | 1004 | else if (tipc_own_addr) |
cb7ce914 | 1005 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, |
26896904 AS |
1006 | num_sect, total_len, |
1007 | destnode); | |
b8f683d1 AS |
1008 | else |
1009 | res = tipc_port_reject_sections(p_ptr, msg, msg_sect, | |
1010 | num_sect, total_len, | |
1011 | TIPC_ERR_NO_NODE); | |
cb7ce914 AS |
1012 | if (likely(res != -ELINKCONG)) { |
1013 | if (res > 0) | |
1014 | p_ptr->sent++; | |
b97bf3fd | 1015 | return res; |
cb7ce914 | 1016 | } |
b97bf3fd | 1017 | if (port_unreliable(p_ptr)) { |
26896904 | 1018 | return total_len; |
b97bf3fd PL |
1019 | } |
1020 | return -ELINKCONG; | |
1021 | } | |
c4307285 | 1022 | return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, |
26896904 | 1023 | total_len, TIPC_ERR_NO_NAME); |
b97bf3fd PL |
1024 | } |
1025 | ||
1026 | /** | |
12bae479 | 1027 | * tipc_send2port - send message sections to port identity |
b97bf3fd | 1028 | */ |
12bae479 | 1029 | int tipc_send2port(u32 ref, struct tipc_portid const *dest, |
26896904 AS |
1030 | unsigned int num_sect, struct iovec const *msg_sect, |
1031 | unsigned int total_len) | |
b97bf3fd | 1032 | { |
23dd4cce | 1033 | struct tipc_port *p_ptr; |
b97bf3fd PL |
1034 | struct tipc_msg *msg; |
1035 | int res; | |
1036 | ||
4323add6 | 1037 | p_ptr = tipc_port_deref(ref); |
23dd4cce | 1038 | if (!p_ptr || p_ptr->connected) |
b97bf3fd PL |
1039 | return -EINVAL; |
1040 | ||
23dd4cce | 1041 | msg = &p_ptr->phdr; |
b97bf3fd | 1042 | msg_set_type(msg, TIPC_DIRECT_MSG); |
53b94364 | 1043 | msg_set_lookup_scope(msg, 0); |
b97bf3fd PL |
1044 | msg_set_destnode(msg, dest->node); |
1045 | msg_set_destport(msg, dest->ref); | |
741d9eb7 | 1046 | msg_set_hdr_sz(msg, BASIC_H_SIZE); |
cb7ce914 | 1047 | |
8a55fe74 | 1048 | if (in_own_node(dest->node)) |
26896904 AS |
1049 | res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect, |
1050 | total_len); | |
b8f683d1 | 1051 | else if (tipc_own_addr) |
cb7ce914 | 1052 | res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, |
26896904 | 1053 | total_len, dest->node); |
b8f683d1 AS |
1054 | else |
1055 | res = tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect, | |
1056 | total_len, TIPC_ERR_NO_NODE); | |
cb7ce914 AS |
1057 | if (likely(res != -ELINKCONG)) { |
1058 | if (res > 0) | |
1059 | p_ptr->sent++; | |
b97bf3fd | 1060 | return res; |
cb7ce914 | 1061 | } |
b97bf3fd | 1062 | if (port_unreliable(p_ptr)) { |
26896904 | 1063 | return total_len; |
b97bf3fd PL |
1064 | } |
1065 | return -ELINKCONG; | |
1066 | } |