Commit | Line | Data |
---|---|---|
b97bf3fd PL |
1 | /* |
2 | * net/tipc/port.c: TIPC port code | |
c4307285 | 3 | * |
8826cde6 | 4 | * Copyright (c) 1992-2007, 2014, Ericsson AB |
198d73b8 | 5 | * Copyright (c) 2004-2008, 2010-2013, Wind River Systems |
b97bf3fd PL |
6 | * All rights reserved. |
7 | * | |
9ea1fd3c | 8 | * Redistribution and use in source and binary forms, with or without |
b97bf3fd PL |
9 | * modification, are permitted provided that the following conditions are met: |
10 | * | |
9ea1fd3c PL |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * 3. Neither the names of the copyright holders nor the names of its | |
17 | * contributors may be used to endorse or promote products derived from | |
18 | * this software without specific prior written permission. | |
b97bf3fd | 19 | * |
9ea1fd3c PL |
20 | * Alternatively, this software may be distributed under the terms of the |
21 | * GNU General Public License ("GPL") version 2 as published by the Free | |
22 | * Software Foundation. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
28 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
b97bf3fd PL |
34 | * POSSIBILITY OF SUCH DAMAGE. |
35 | */ | |
36 | ||
37 | #include "core.h" | |
38 | #include "config.h" | |
b97bf3fd | 39 | #include "port.h" |
b97bf3fd | 40 | #include "name_table.h" |
8826cde6 | 41 | #include "socket.h" |
b97bf3fd PL |
42 | |
43 | /* Connection management: */ | |
44 | #define PROBING_INTERVAL 3600000 /* [ms] => 1 h */ | |
b97bf3fd PL |
45 | |
46 | #define MAX_REJECT_SIZE 1024 | |
47 | ||
34af946a | 48 | DEFINE_SPINLOCK(tipc_port_list_lock); |
b97bf3fd | 49 | |
4323add6 | 50 | static LIST_HEAD(ports); |
b97bf3fd | 51 | static void port_handle_node_down(unsigned long ref); |
23dd4cce AS |
52 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *, u32 err); |
53 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *, u32 err); | |
b97bf3fd PL |
54 | static void port_timeout(unsigned long ref); |
55 | ||
2c53040f | 56 | /** |
f0712e86 AS |
57 | * tipc_port_peer_msg - verify message was sent by connected port's peer |
58 | * | |
59 | * Handles cases where the node's network address has changed from | |
60 | * the default of <0.0.0> to its configured setting. | |
61 | */ | |
f0712e86 AS |
62 | int tipc_port_peer_msg(struct tipc_port *p_ptr, struct tipc_msg *msg) |
63 | { | |
64 | u32 peernode; | |
65 | u32 orignode; | |
66 | ||
f9fef18c | 67 | if (msg_origport(msg) != tipc_port_peerport(p_ptr)) |
f0712e86 AS |
68 | return 0; |
69 | ||
70 | orignode = msg_orignode(msg); | |
f9fef18c | 71 | peernode = tipc_port_peernode(p_ptr); |
f0712e86 AS |
72 | return (orignode == peernode) || |
73 | (!orignode && (peernode == tipc_own_addr)) || | |
74 | (!peernode && (orignode == tipc_own_addr)); | |
75 | } | |
76 | ||
b97bf3fd | 77 | /** |
247f0f3c YX |
78 | * tipc_port_mcast_xmit - send a multicast message to local and remote |
79 | * destinations | |
b97bf3fd | 80 | */ |
5c311421 JPM |
81 | int tipc_port_mcast_xmit(struct tipc_port *oport, |
82 | struct tipc_name_seq const *seq, | |
83 | struct iovec const *msg_sect, | |
84 | unsigned int len) | |
b97bf3fd PL |
85 | { |
86 | struct tipc_msg *hdr; | |
87 | struct sk_buff *buf; | |
88 | struct sk_buff *ibuf = NULL; | |
4584310b | 89 | struct tipc_port_list dports = {0, NULL, }; |
b97bf3fd PL |
90 | int ext_targets; |
91 | int res; | |
92 | ||
b97bf3fd | 93 | /* Create multicast message */ |
23dd4cce | 94 | hdr = &oport->phdr; |
b97bf3fd | 95 | msg_set_type(hdr, TIPC_MCAST_MSG); |
53b94364 | 96 | msg_set_lookup_scope(hdr, TIPC_CLUSTER_SCOPE); |
7462b9e9 AS |
97 | msg_set_destport(hdr, 0); |
98 | msg_set_destnode(hdr, 0); | |
b97bf3fd PL |
99 | msg_set_nametype(hdr, seq->type); |
100 | msg_set_namelower(hdr, seq->lower); | |
101 | msg_set_nameupper(hdr, seq->upper); | |
102 | msg_set_hdr_sz(hdr, MCAST_H_SIZE); | |
9446b87a | 103 | res = tipc_msg_build(hdr, msg_sect, len, MAX_MSG_SIZE, &buf); |
b97bf3fd PL |
104 | if (unlikely(!buf)) |
105 | return res; | |
106 | ||
107 | /* Figure out where to send multicast message */ | |
4323add6 PL |
108 | ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper, |
109 | TIPC_NODE_SCOPE, &dports); | |
c4307285 YH |
110 | |
111 | /* Send message to destinations (duplicate it only if necessary) */ | |
b97bf3fd PL |
112 | if (ext_targets) { |
113 | if (dports.count != 0) { | |
114 | ibuf = skb_copy(buf, GFP_ATOMIC); | |
115 | if (ibuf == NULL) { | |
4323add6 | 116 | tipc_port_list_free(&dports); |
5f6d9123 | 117 | kfree_skb(buf); |
b97bf3fd PL |
118 | return -ENOMEM; |
119 | } | |
120 | } | |
247f0f3c | 121 | res = tipc_bclink_xmit(buf); |
a016892c | 122 | if ((res < 0) && (dports.count != 0)) |
5f6d9123 | 123 | kfree_skb(ibuf); |
b97bf3fd PL |
124 | } else { |
125 | ibuf = buf; | |
126 | } | |
127 | ||
128 | if (res >= 0) { | |
129 | if (ibuf) | |
247f0f3c | 130 | tipc_port_mcast_rcv(ibuf, &dports); |
b97bf3fd | 131 | } else { |
4323add6 | 132 | tipc_port_list_free(&dports); |
b97bf3fd PL |
133 | } |
134 | return res; | |
135 | } | |
136 | ||
137 | /** | |
247f0f3c | 138 | * tipc_port_mcast_rcv - deliver multicast message to all destination ports |
c4307285 | 139 | * |
b97bf3fd PL |
140 | * If there is no port list, perform a lookup to create one |
141 | */ | |
247f0f3c | 142 | void tipc_port_mcast_rcv(struct sk_buff *buf, struct tipc_port_list *dp) |
b97bf3fd | 143 | { |
0e65967e | 144 | struct tipc_msg *msg; |
4584310b PG |
145 | struct tipc_port_list dports = {0, NULL, }; |
146 | struct tipc_port_list *item = dp; | |
b97bf3fd PL |
147 | int cnt = 0; |
148 | ||
b97bf3fd PL |
149 | msg = buf_msg(buf); |
150 | ||
151 | /* Create destination port list, if one wasn't supplied */ | |
b97bf3fd | 152 | if (dp == NULL) { |
4323add6 | 153 | tipc_nametbl_mc_translate(msg_nametype(msg), |
b97bf3fd PL |
154 | msg_namelower(msg), |
155 | msg_nameupper(msg), | |
156 | TIPC_CLUSTER_SCOPE, | |
157 | &dports); | |
158 | item = dp = &dports; | |
159 | } | |
160 | ||
161 | /* Deliver a copy of message to each destination port */ | |
b97bf3fd | 162 | if (dp->count != 0) { |
7f47f5c7 | 163 | msg_set_destnode(msg, tipc_own_addr); |
b97bf3fd PL |
164 | if (dp->count == 1) { |
165 | msg_set_destport(msg, dp->ports[0]); | |
9816f061 | 166 | tipc_sk_rcv(buf); |
4323add6 | 167 | tipc_port_list_free(dp); |
b97bf3fd PL |
168 | return; |
169 | } | |
170 | for (; cnt < dp->count; cnt++) { | |
171 | int index = cnt % PLSIZE; | |
172 | struct sk_buff *b = skb_clone(buf, GFP_ATOMIC); | |
173 | ||
174 | if (b == NULL) { | |
2cf8aa19 | 175 | pr_warn("Unable to deliver multicast message(s)\n"); |
b97bf3fd PL |
176 | goto exit; |
177 | } | |
a016892c | 178 | if ((index == 0) && (cnt != 0)) |
b97bf3fd | 179 | item = item->next; |
0e65967e | 180 | msg_set_destport(buf_msg(b), item->ports[index]); |
9816f061 | 181 | tipc_sk_rcv(b); |
b97bf3fd PL |
182 | } |
183 | } | |
184 | exit: | |
5f6d9123 | 185 | kfree_skb(buf); |
4323add6 | 186 | tipc_port_list_free(dp); |
b97bf3fd PL |
187 | } |
188 | ||
24be34b5 | 189 | /* tipc_port_init - intiate TIPC port and lock it |
c4307285 | 190 | * |
24be34b5 | 191 | * Returns obtained reference if initialization is successful, zero otherwise |
b97bf3fd | 192 | */ |
24be34b5 JPM |
193 | u32 tipc_port_init(struct tipc_port *p_ptr, |
194 | const unsigned int importance) | |
b97bf3fd | 195 | { |
b97bf3fd PL |
196 | struct tipc_msg *msg; |
197 | u32 ref; | |
198 | ||
23dd4cce | 199 | ref = tipc_ref_acquire(p_ptr, &p_ptr->lock); |
b97bf3fd | 200 | if (!ref) { |
8826cde6 | 201 | pr_warn("Port registration failed, ref. table exhausted\n"); |
24be34b5 | 202 | return 0; |
b97bf3fd PL |
203 | } |
204 | ||
23dd4cce AS |
205 | p_ptr->max_pkt = MAX_PKT_DEFAULT; |
206 | p_ptr->ref = ref; | |
b97bf3fd PL |
207 | INIT_LIST_HEAD(&p_ptr->wait_list); |
208 | INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list); | |
b97bf3fd | 209 | k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref); |
b97bf3fd PL |
210 | INIT_LIST_HEAD(&p_ptr->publications); |
211 | INIT_LIST_HEAD(&p_ptr->port_list); | |
f21536d1 AS |
212 | |
213 | /* | |
214 | * Must hold port list lock while initializing message header template | |
215 | * to ensure a change to node's own network address doesn't result | |
216 | * in template containing out-dated network address information | |
217 | */ | |
f21536d1 AS |
218 | spin_lock_bh(&tipc_port_list_lock); |
219 | msg = &p_ptr->phdr; | |
220 | tipc_msg_init(msg, importance, TIPC_NAMED_MSG, NAMED_H_SIZE, 0); | |
221 | msg_set_origport(msg, ref); | |
b97bf3fd | 222 | list_add_tail(&p_ptr->port_list, &ports); |
4323add6 | 223 | spin_unlock_bh(&tipc_port_list_lock); |
24be34b5 | 224 | return ref; |
b97bf3fd PL |
225 | } |
226 | ||
24be34b5 | 227 | void tipc_port_destroy(struct tipc_port *p_ptr) |
b97bf3fd | 228 | { |
1fc54d8f | 229 | struct sk_buff *buf = NULL; |
b786e2b0 JPM |
230 | struct tipc_msg *msg = NULL; |
231 | u32 peer; | |
b97bf3fd | 232 | |
84602761 | 233 | tipc_withdraw(p_ptr, 0, NULL); |
b97bf3fd | 234 | |
84602761 YX |
235 | spin_lock_bh(p_ptr->lock); |
236 | tipc_ref_discard(p_ptr->ref); | |
237 | spin_unlock_bh(p_ptr->lock); | |
b97bf3fd PL |
238 | |
239 | k_cancel_timer(&p_ptr->timer); | |
23dd4cce | 240 | if (p_ptr->connected) { |
b97bf3fd | 241 | buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
4323add6 | 242 | tipc_nodesub_unsubscribe(&p_ptr->subscription); |
b786e2b0 JPM |
243 | msg = buf_msg(buf); |
244 | peer = msg_destnode(msg); | |
245 | tipc_link_xmit2(buf, peer, msg_link_selector(msg)); | |
b97bf3fd | 246 | } |
4323add6 | 247 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
248 | list_del(&p_ptr->port_list); |
249 | list_del(&p_ptr->wait_list); | |
4323add6 | 250 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd | 251 | k_term_timer(&p_ptr->timer); |
b97bf3fd PL |
252 | } |
253 | ||
c4307285 | 254 | /* |
e4a0aee4 AS |
255 | * port_build_proto_msg(): create connection protocol message for port |
256 | * | |
257 | * On entry the port must be locked and connected. | |
b97bf3fd | 258 | */ |
e4a0aee4 AS |
259 | static struct sk_buff *port_build_proto_msg(struct tipc_port *p_ptr, |
260 | u32 type, u32 ack) | |
b97bf3fd PL |
261 | { |
262 | struct sk_buff *buf; | |
263 | struct tipc_msg *msg; | |
c4307285 | 264 | |
741d9eb7 | 265 | buf = tipc_buf_acquire(INT_H_SIZE); |
b97bf3fd PL |
266 | if (buf) { |
267 | msg = buf_msg(buf); | |
e4a0aee4 | 268 | tipc_msg_init(msg, CONN_MANAGER, type, INT_H_SIZE, |
f9fef18c JPM |
269 | tipc_port_peernode(p_ptr)); |
270 | msg_set_destport(msg, tipc_port_peerport(p_ptr)); | |
e4a0aee4 | 271 | msg_set_origport(msg, p_ptr->ref); |
b97bf3fd | 272 | msg_set_msgcnt(msg, ack); |
b786e2b0 | 273 | buf->next = NULL; |
b97bf3fd PL |
274 | } |
275 | return buf; | |
276 | } | |
277 | ||
b97bf3fd PL |
278 | static void port_timeout(unsigned long ref) |
279 | { | |
23dd4cce | 280 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
1fc54d8f | 281 | struct sk_buff *buf = NULL; |
b786e2b0 | 282 | struct tipc_msg *msg = NULL; |
b97bf3fd | 283 | |
065fd177 AS |
284 | if (!p_ptr) |
285 | return; | |
286 | ||
23dd4cce | 287 | if (!p_ptr->connected) { |
065fd177 | 288 | tipc_port_unlock(p_ptr); |
b97bf3fd | 289 | return; |
065fd177 | 290 | } |
b97bf3fd PL |
291 | |
292 | /* Last probe answered ? */ | |
ac0074ee | 293 | if (p_ptr->probing_state == TIPC_CONN_PROBING) { |
b97bf3fd PL |
294 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT); |
295 | } else { | |
e4a0aee4 | 296 | buf = port_build_proto_msg(p_ptr, CONN_PROBE, 0); |
ac0074ee | 297 | p_ptr->probing_state = TIPC_CONN_PROBING; |
b97bf3fd PL |
298 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
299 | } | |
4323add6 | 300 | tipc_port_unlock(p_ptr); |
b786e2b0 JPM |
301 | msg = buf_msg(buf); |
302 | tipc_link_xmit2(buf, msg_destnode(msg), msg_link_selector(msg)); | |
b97bf3fd PL |
303 | } |
304 | ||
305 | ||
306 | static void port_handle_node_down(unsigned long ref) | |
307 | { | |
23dd4cce | 308 | struct tipc_port *p_ptr = tipc_port_lock(ref); |
0e65967e | 309 | struct sk_buff *buf = NULL; |
b786e2b0 | 310 | struct tipc_msg *msg = NULL; |
b97bf3fd PL |
311 | |
312 | if (!p_ptr) | |
313 | return; | |
314 | buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE); | |
4323add6 | 315 | tipc_port_unlock(p_ptr); |
b786e2b0 JPM |
316 | msg = buf_msg(buf); |
317 | tipc_link_xmit2(buf, msg_destnode(msg), msg_link_selector(msg)); | |
b97bf3fd PL |
318 | } |
319 | ||
320 | ||
23dd4cce | 321 | static struct sk_buff *port_build_self_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 322 | { |
e244a915 | 323 | struct sk_buff *buf = port_build_peer_abort_msg(p_ptr, err); |
b97bf3fd | 324 | |
e244a915 AS |
325 | if (buf) { |
326 | struct tipc_msg *msg = buf_msg(buf); | |
327 | msg_swap_words(msg, 4, 5); | |
328 | msg_swap_words(msg, 6, 7); | |
b786e2b0 | 329 | buf->next = NULL; |
e244a915 AS |
330 | } |
331 | return buf; | |
b97bf3fd PL |
332 | } |
333 | ||
334 | ||
23dd4cce | 335 | static struct sk_buff *port_build_peer_abort_msg(struct tipc_port *p_ptr, u32 err) |
b97bf3fd | 336 | { |
e244a915 AS |
337 | struct sk_buff *buf; |
338 | struct tipc_msg *msg; | |
339 | u32 imp; | |
b97bf3fd | 340 | |
23dd4cce | 341 | if (!p_ptr->connected) |
1fc54d8f | 342 | return NULL; |
e244a915 AS |
343 | |
344 | buf = tipc_buf_acquire(BASIC_H_SIZE); | |
345 | if (buf) { | |
346 | msg = buf_msg(buf); | |
347 | memcpy(msg, &p_ptr->phdr, BASIC_H_SIZE); | |
348 | msg_set_hdr_sz(msg, BASIC_H_SIZE); | |
349 | msg_set_size(msg, BASIC_H_SIZE); | |
350 | imp = msg_importance(msg); | |
351 | if (imp < TIPC_CRITICAL_IMPORTANCE) | |
352 | msg_set_importance(msg, ++imp); | |
353 | msg_set_errcode(msg, err); | |
b786e2b0 | 354 | buf->next = NULL; |
e244a915 AS |
355 | } |
356 | return buf; | |
b97bf3fd PL |
357 | } |
358 | ||
dc1aed37 | 359 | static int port_print(struct tipc_port *p_ptr, char *buf, int len, int full_id) |
b97bf3fd | 360 | { |
c4307285 | 361 | struct publication *publ; |
dc1aed37 | 362 | int ret; |
b97bf3fd PL |
363 | |
364 | if (full_id) | |
dc1aed37 EH |
365 | ret = tipc_snprintf(buf, len, "<%u.%u.%u:%u>:", |
366 | tipc_zone(tipc_own_addr), | |
367 | tipc_cluster(tipc_own_addr), | |
368 | tipc_node(tipc_own_addr), p_ptr->ref); | |
b97bf3fd | 369 | else |
dc1aed37 | 370 | ret = tipc_snprintf(buf, len, "%-10u:", p_ptr->ref); |
b97bf3fd | 371 | |
23dd4cce | 372 | if (p_ptr->connected) { |
f9fef18c JPM |
373 | u32 dport = tipc_port_peerport(p_ptr); |
374 | u32 destnode = tipc_port_peernode(p_ptr); | |
c4307285 | 375 | |
dc1aed37 EH |
376 | ret += tipc_snprintf(buf + ret, len - ret, |
377 | " connected to <%u.%u.%u:%u>", | |
378 | tipc_zone(destnode), | |
379 | tipc_cluster(destnode), | |
380 | tipc_node(destnode), dport); | |
23dd4cce | 381 | if (p_ptr->conn_type != 0) |
dc1aed37 EH |
382 | ret += tipc_snprintf(buf + ret, len - ret, |
383 | " via {%u,%u}", p_ptr->conn_type, | |
384 | p_ptr->conn_instance); | |
23dd4cce | 385 | } else if (p_ptr->published) { |
dc1aed37 | 386 | ret += tipc_snprintf(buf + ret, len - ret, " bound to"); |
c4307285 | 387 | list_for_each_entry(publ, &p_ptr->publications, pport_list) { |
b97bf3fd | 388 | if (publ->lower == publ->upper) |
dc1aed37 EH |
389 | ret += tipc_snprintf(buf + ret, len - ret, |
390 | " {%u,%u}", publ->type, | |
391 | publ->lower); | |
b97bf3fd | 392 | else |
dc1aed37 EH |
393 | ret += tipc_snprintf(buf + ret, len - ret, |
394 | " {%u,%u,%u}", publ->type, | |
395 | publ->lower, publ->upper); | |
c4307285 YH |
396 | } |
397 | } | |
dc1aed37 EH |
398 | ret += tipc_snprintf(buf + ret, len - ret, "\n"); |
399 | return ret; | |
b97bf3fd PL |
400 | } |
401 | ||
4323add6 | 402 | struct sk_buff *tipc_port_get_ports(void) |
b97bf3fd PL |
403 | { |
404 | struct sk_buff *buf; | |
405 | struct tlv_desc *rep_tlv; | |
dc1aed37 EH |
406 | char *pb; |
407 | int pb_len; | |
23dd4cce | 408 | struct tipc_port *p_ptr; |
dc1aed37 | 409 | int str_len = 0; |
b97bf3fd | 410 | |
dc1aed37 | 411 | buf = tipc_cfg_reply_alloc(TLV_SPACE(ULTRA_STRING_MAX_LEN)); |
b97bf3fd PL |
412 | if (!buf) |
413 | return NULL; | |
414 | rep_tlv = (struct tlv_desc *)buf->data; | |
dc1aed37 EH |
415 | pb = TLV_DATA(rep_tlv); |
416 | pb_len = ULTRA_STRING_MAX_LEN; | |
b97bf3fd | 417 | |
4323add6 | 418 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 419 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 420 | spin_lock_bh(p_ptr->lock); |
dc1aed37 | 421 | str_len += port_print(p_ptr, pb, pb_len, 0); |
23dd4cce | 422 | spin_unlock_bh(p_ptr->lock); |
b97bf3fd | 423 | } |
4323add6 | 424 | spin_unlock_bh(&tipc_port_list_lock); |
dc1aed37 | 425 | str_len += 1; /* for "\0" */ |
b97bf3fd PL |
426 | skb_put(buf, TLV_SPACE(str_len)); |
427 | TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); | |
428 | ||
429 | return buf; | |
430 | } | |
431 | ||
4323add6 | 432 | void tipc_port_reinit(void) |
b97bf3fd | 433 | { |
23dd4cce | 434 | struct tipc_port *p_ptr; |
b97bf3fd PL |
435 | struct tipc_msg *msg; |
436 | ||
4323add6 | 437 | spin_lock_bh(&tipc_port_list_lock); |
b97bf3fd | 438 | list_for_each_entry(p_ptr, &ports, port_list) { |
23dd4cce | 439 | msg = &p_ptr->phdr; |
6d4a6672 | 440 | msg_set_prevnode(msg, tipc_own_addr); |
b97bf3fd PL |
441 | msg_set_orignode(msg, tipc_own_addr); |
442 | } | |
4323add6 | 443 | spin_unlock_bh(&tipc_port_list_lock); |
b97bf3fd PL |
444 | } |
445 | ||
b97bf3fd PL |
446 | void tipc_acknowledge(u32 ref, u32 ack) |
447 | { | |
23dd4cce | 448 | struct tipc_port *p_ptr; |
1fc54d8f | 449 | struct sk_buff *buf = NULL; |
b786e2b0 | 450 | struct tipc_msg *msg; |
b97bf3fd | 451 | |
4323add6 | 452 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
453 | if (!p_ptr) |
454 | return; | |
60120526 | 455 | if (p_ptr->connected) |
e4a0aee4 | 456 | buf = port_build_proto_msg(p_ptr, CONN_ACK, ack); |
60120526 | 457 | |
4323add6 | 458 | tipc_port_unlock(p_ptr); |
b786e2b0 JPM |
459 | if (!buf) |
460 | return; | |
461 | msg = buf_msg(buf); | |
462 | tipc_link_xmit2(buf, msg_destnode(msg), msg_link_selector(msg)); | |
b97bf3fd PL |
463 | } |
464 | ||
84602761 YX |
465 | int tipc_publish(struct tipc_port *p_ptr, unsigned int scope, |
466 | struct tipc_name_seq const *seq) | |
b97bf3fd | 467 | { |
b97bf3fd PL |
468 | struct publication *publ; |
469 | u32 key; | |
b97bf3fd | 470 | |
84602761 | 471 | if (p_ptr->connected) |
d55b4c63 | 472 | return -EINVAL; |
84602761 YX |
473 | key = p_ptr->ref + p_ptr->pub_count + 1; |
474 | if (key == p_ptr->ref) | |
475 | return -EADDRINUSE; | |
d55b4c63 | 476 | |
4323add6 | 477 | publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper, |
23dd4cce | 478 | scope, p_ptr->ref, key); |
b97bf3fd PL |
479 | if (publ) { |
480 | list_add(&publ->pport_list, &p_ptr->publications); | |
481 | p_ptr->pub_count++; | |
23dd4cce | 482 | p_ptr->published = 1; |
84602761 | 483 | return 0; |
b97bf3fd | 484 | } |
84602761 | 485 | return -EINVAL; |
b97bf3fd PL |
486 | } |
487 | ||
84602761 YX |
488 | int tipc_withdraw(struct tipc_port *p_ptr, unsigned int scope, |
489 | struct tipc_name_seq const *seq) | |
b97bf3fd | 490 | { |
b97bf3fd PL |
491 | struct publication *publ; |
492 | struct publication *tpubl; | |
493 | int res = -EINVAL; | |
c4307285 | 494 | |
b97bf3fd | 495 | if (!seq) { |
c4307285 | 496 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd | 497 | &p_ptr->publications, pport_list) { |
c4307285 | 498 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 499 | publ->ref, publ->key); |
b97bf3fd | 500 | } |
0e35fd5e | 501 | res = 0; |
b97bf3fd | 502 | } else { |
c4307285 | 503 | list_for_each_entry_safe(publ, tpubl, |
b97bf3fd PL |
504 | &p_ptr->publications, pport_list) { |
505 | if (publ->scope != scope) | |
506 | continue; | |
507 | if (publ->type != seq->type) | |
508 | continue; | |
509 | if (publ->lower != seq->lower) | |
510 | continue; | |
511 | if (publ->upper != seq->upper) | |
512 | break; | |
c4307285 | 513 | tipc_nametbl_withdraw(publ->type, publ->lower, |
4323add6 | 514 | publ->ref, publ->key); |
0e35fd5e | 515 | res = 0; |
b97bf3fd PL |
516 | break; |
517 | } | |
518 | } | |
519 | if (list_empty(&p_ptr->publications)) | |
23dd4cce | 520 | p_ptr->published = 0; |
b97bf3fd PL |
521 | return res; |
522 | } | |
523 | ||
247f0f3c | 524 | int tipc_port_connect(u32 ref, struct tipc_portid const *peer) |
b97bf3fd | 525 | { |
23dd4cce | 526 | struct tipc_port *p_ptr; |
bc879117 | 527 | int res; |
b97bf3fd | 528 | |
4323add6 | 529 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
530 | if (!p_ptr) |
531 | return -EINVAL; | |
247f0f3c | 532 | res = __tipc_port_connect(ref, p_ptr, peer); |
bc879117 PG |
533 | tipc_port_unlock(p_ptr); |
534 | return res; | |
535 | } | |
536 | ||
537 | /* | |
247f0f3c | 538 | * __tipc_port_connect - connect to a remote peer |
bc879117 PG |
539 | * |
540 | * Port must be locked. | |
541 | */ | |
247f0f3c | 542 | int __tipc_port_connect(u32 ref, struct tipc_port *p_ptr, |
bc879117 PG |
543 | struct tipc_portid const *peer) |
544 | { | |
545 | struct tipc_msg *msg; | |
546 | int res = -EINVAL; | |
547 | ||
23dd4cce | 548 | if (p_ptr->published || p_ptr->connected) |
b97bf3fd PL |
549 | goto exit; |
550 | if (!peer->ref) | |
551 | goto exit; | |
552 | ||
23dd4cce | 553 | msg = &p_ptr->phdr; |
b97bf3fd PL |
554 | msg_set_destnode(msg, peer->node); |
555 | msg_set_destport(msg, peer->ref); | |
b97bf3fd | 556 | msg_set_type(msg, TIPC_CONN_MSG); |
53b94364 | 557 | msg_set_lookup_scope(msg, 0); |
08c80e9a | 558 | msg_set_hdr_sz(msg, SHORT_H_SIZE); |
b97bf3fd PL |
559 | |
560 | p_ptr->probing_interval = PROBING_INTERVAL; | |
ac0074ee | 561 | p_ptr->probing_state = TIPC_CONN_OK; |
23dd4cce | 562 | p_ptr->connected = 1; |
b97bf3fd PL |
563 | k_start_timer(&p_ptr->timer, p_ptr->probing_interval); |
564 | ||
0e65967e | 565 | tipc_nodesub_subscribe(&p_ptr->subscription, peer->node, |
880b005f | 566 | (void *)(unsigned long)ref, |
b97bf3fd | 567 | (net_ev_handler)port_handle_node_down); |
0e35fd5e | 568 | res = 0; |
b97bf3fd | 569 | exit: |
4ccfe5e0 | 570 | p_ptr->max_pkt = tipc_node_get_mtu(peer->node, ref); |
b97bf3fd PL |
571 | return res; |
572 | } | |
573 | ||
bc879117 PG |
574 | /* |
575 | * __tipc_disconnect - disconnect port from peer | |
0c3141e9 AS |
576 | * |
577 | * Port must be locked. | |
578 | */ | |
247f0f3c | 579 | int __tipc_port_disconnect(struct tipc_port *tp_ptr) |
0c3141e9 | 580 | { |
0c3141e9 AS |
581 | if (tp_ptr->connected) { |
582 | tp_ptr->connected = 0; | |
583 | /* let timer expire on it's own to avoid deadlock! */ | |
e3192690 | 584 | tipc_nodesub_unsubscribe(&tp_ptr->subscription); |
0cee6bbe | 585 | return 0; |
0c3141e9 | 586 | } |
0cee6bbe | 587 | |
588 | return -ENOTCONN; | |
0c3141e9 AS |
589 | } |
590 | ||
b97bf3fd | 591 | /* |
247f0f3c | 592 | * tipc_port_disconnect(): Disconnect port form peer. |
b97bf3fd PL |
593 | * This is a node local operation. |
594 | */ | |
247f0f3c | 595 | int tipc_port_disconnect(u32 ref) |
b97bf3fd | 596 | { |
23dd4cce | 597 | struct tipc_port *p_ptr; |
0c3141e9 | 598 | int res; |
b97bf3fd | 599 | |
4323add6 | 600 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
601 | if (!p_ptr) |
602 | return -EINVAL; | |
247f0f3c | 603 | res = __tipc_port_disconnect(p_ptr); |
4323add6 | 604 | tipc_port_unlock(p_ptr); |
b97bf3fd PL |
605 | return res; |
606 | } | |
607 | ||
608 | /* | |
247f0f3c | 609 | * tipc_port_shutdown(): Send a SHUTDOWN msg to peer and disconnect |
b97bf3fd | 610 | */ |
247f0f3c | 611 | int tipc_port_shutdown(u32 ref) |
b97bf3fd | 612 | { |
b786e2b0 | 613 | struct tipc_msg *msg; |
23dd4cce | 614 | struct tipc_port *p_ptr; |
1fc54d8f | 615 | struct sk_buff *buf = NULL; |
b97bf3fd | 616 | |
4323add6 | 617 | p_ptr = tipc_port_lock(ref); |
b97bf3fd PL |
618 | if (!p_ptr) |
619 | return -EINVAL; | |
620 | ||
e244a915 | 621 | buf = port_build_peer_abort_msg(p_ptr, TIPC_CONN_SHUTDOWN); |
4323add6 | 622 | tipc_port_unlock(p_ptr); |
b786e2b0 JPM |
623 | msg = buf_msg(buf); |
624 | tipc_link_xmit2(buf, msg_destnode(msg), msg_link_selector(msg)); | |
247f0f3c | 625 | return tipc_port_disconnect(ref); |
b97bf3fd | 626 | } |