blob: 757de38fe6afcf84bf69d3d98114fe0bdfea9a34 [file] [log] [blame]
Per Lidenb97bf3f2006-01-02 19:04:38 +01001/*
2 * net/tipc/port.c: TIPC port code
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09003 *
Allan Stephens05646c92007-06-10 17:25:24 -07004 * Copyright (c) 1992-2007, Ericsson AB
5 * Copyright (c) 2004-2007, Wind River Systems
Per Lidenb97bf3f2006-01-02 19:04:38 +01006 * All rights reserved.
7 *
Per Liden9ea1fd32006-01-11 13:30:43 +01008 * Redistribution and use in source and binary forms, with or without
Per Lidenb97bf3f2006-01-02 19:04:38 +01009 * modification, are permitted provided that the following conditions are met:
10 *
Per Liden9ea1fd32006-01-11 13:30:43 +010011 * 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.
Per Lidenb97bf3f2006-01-02 19:04:38 +010019 *
Per Liden9ea1fd32006-01-11 13:30:43 +010020 * 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
Per Lidenb97bf3f2006-01-02 19:04:38 +010034 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#include "core.h"
38#include "config.h"
39#include "dbg.h"
40#include "port.h"
41#include "addr.h"
42#include "link.h"
43#include "node.h"
Per Lidenb97bf3f2006-01-02 19:04:38 +010044#include "name_table.h"
45#include "user_reg.h"
46#include "msg.h"
47#include "bcast.h"
48
49/* Connection management: */
50#define PROBING_INTERVAL 3600000 /* [ms] => 1 h */
51#define CONFIRMED 0
52#define PROBING 1
53
54#define MAX_REJECT_SIZE 1024
55
Sam Ravnborg1fc54d82006-03-20 22:36:47 -080056static struct sk_buff *msg_queue_head = NULL;
57static struct sk_buff *msg_queue_tail = NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +010058
Ingo Molnar34af9462006-06-27 02:53:55 -070059DEFINE_SPINLOCK(tipc_port_list_lock);
60static DEFINE_SPINLOCK(queue_lock);
Per Lidenb97bf3f2006-01-02 19:04:38 +010061
Per Liden4323add2006-01-18 00:38:21 +010062static LIST_HEAD(ports);
Per Lidenb97bf3f2006-01-02 19:04:38 +010063static void port_handle_node_down(unsigned long ref);
64static struct sk_buff* port_build_self_abort_msg(struct port *,u32 err);
65static struct sk_buff* port_build_peer_abort_msg(struct port *,u32 err);
66static void port_timeout(unsigned long ref);
67
68
Sam Ravnborg05790c62006-03-20 22:37:04 -080069static u32 port_peernode(struct port *p_ptr)
Per Lidenb97bf3f2006-01-02 19:04:38 +010070{
71 return msg_destnode(&p_ptr->publ.phdr);
72}
73
Sam Ravnborg05790c62006-03-20 22:37:04 -080074static u32 port_peerport(struct port *p_ptr)
Per Lidenb97bf3f2006-01-02 19:04:38 +010075{
76 return msg_destport(&p_ptr->publ.phdr);
77}
78
Sam Ravnborg05790c62006-03-20 22:37:04 -080079static u32 port_out_seqno(struct port *p_ptr)
Per Lidenb97bf3f2006-01-02 19:04:38 +010080{
81 return msg_transp_seqno(&p_ptr->publ.phdr);
82}
83
Sam Ravnborg05790c62006-03-20 22:37:04 -080084static void port_incr_out_seqno(struct port *p_ptr)
Per Lidenb97bf3f2006-01-02 19:04:38 +010085{
86 struct tipc_msg *m = &p_ptr->publ.phdr;
87
88 if (likely(!msg_routed(m)))
89 return;
90 msg_set_transp_seqno(m, (msg_transp_seqno(m) + 1));
91}
92
93/**
94 * tipc_multicast - send a multicast message to local and remote destinations
95 */
96
97int tipc_multicast(u32 ref, struct tipc_name_seq const *seq, u32 domain,
98 u32 num_sect, struct iovec const *msg_sect)
99{
100 struct tipc_msg *hdr;
101 struct sk_buff *buf;
102 struct sk_buff *ibuf = NULL;
103 struct port_list dports = {0, NULL, };
Per Liden4323add2006-01-18 00:38:21 +0100104 struct port *oport = tipc_port_deref(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100105 int ext_targets;
106 int res;
107
108 if (unlikely(!oport))
109 return -EINVAL;
110
111 /* Create multicast message */
112
113 hdr = &oport->publ.phdr;
114 msg_set_type(hdr, TIPC_MCAST_MSG);
115 msg_set_nametype(hdr, seq->type);
116 msg_set_namelower(hdr, seq->lower);
117 msg_set_nameupper(hdr, seq->upper);
118 msg_set_hdr_sz(hdr, MCAST_H_SIZE);
119 res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE,
120 !oport->user_port, &buf);
121 if (unlikely(!buf))
122 return res;
123
124 /* Figure out where to send multicast message */
125
Per Liden4323add2006-01-18 00:38:21 +0100126 ext_targets = tipc_nametbl_mc_translate(seq->type, seq->lower, seq->upper,
127 TIPC_NODE_SCOPE, &dports);
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900128
129 /* Send message to destinations (duplicate it only if necessary) */
Per Lidenb97bf3f2006-01-02 19:04:38 +0100130
131 if (ext_targets) {
132 if (dports.count != 0) {
133 ibuf = skb_copy(buf, GFP_ATOMIC);
134 if (ibuf == NULL) {
Per Liden4323add2006-01-18 00:38:21 +0100135 tipc_port_list_free(&dports);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100136 buf_discard(buf);
137 return -ENOMEM;
138 }
139 }
Per Liden4323add2006-01-18 00:38:21 +0100140 res = tipc_bclink_send_msg(buf);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100141 if ((res < 0) && (dports.count != 0)) {
142 buf_discard(ibuf);
143 }
144 } else {
145 ibuf = buf;
146 }
147
148 if (res >= 0) {
149 if (ibuf)
Per Liden4323add2006-01-18 00:38:21 +0100150 tipc_port_recv_mcast(ibuf, &dports);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100151 } else {
Per Liden4323add2006-01-18 00:38:21 +0100152 tipc_port_list_free(&dports);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100153 }
154 return res;
155}
156
157/**
Per Liden4323add2006-01-18 00:38:21 +0100158 * tipc_port_recv_mcast - deliver multicast message to all destination ports
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900159 *
Per Lidenb97bf3f2006-01-02 19:04:38 +0100160 * If there is no port list, perform a lookup to create one
161 */
162
Per Liden4323add2006-01-18 00:38:21 +0100163void tipc_port_recv_mcast(struct sk_buff *buf, struct port_list *dp)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100164{
165 struct tipc_msg* msg;
166 struct port_list dports = {0, NULL, };
167 struct port_list *item = dp;
168 int cnt = 0;
169
Per Lidenb97bf3f2006-01-02 19:04:38 +0100170 msg = buf_msg(buf);
171
172 /* Create destination port list, if one wasn't supplied */
173
174 if (dp == NULL) {
Per Liden4323add2006-01-18 00:38:21 +0100175 tipc_nametbl_mc_translate(msg_nametype(msg),
Per Lidenb97bf3f2006-01-02 19:04:38 +0100176 msg_namelower(msg),
177 msg_nameupper(msg),
178 TIPC_CLUSTER_SCOPE,
179 &dports);
180 item = dp = &dports;
181 }
182
183 /* Deliver a copy of message to each destination port */
184
185 if (dp->count != 0) {
186 if (dp->count == 1) {
187 msg_set_destport(msg, dp->ports[0]);
Per Liden4323add2006-01-18 00:38:21 +0100188 tipc_port_recv_msg(buf);
189 tipc_port_list_free(dp);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100190 return;
191 }
192 for (; cnt < dp->count; cnt++) {
193 int index = cnt % PLSIZE;
194 struct sk_buff *b = skb_clone(buf, GFP_ATOMIC);
195
196 if (b == NULL) {
Allan Stephensa10bd922006-06-25 23:52:17 -0700197 warn("Unable to deliver multicast message(s)\n");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100198 msg_dbg(msg, "LOST:");
199 goto exit;
200 }
201 if ((index == 0) && (cnt != 0)) {
202 item = item->next;
203 }
204 msg_set_destport(buf_msg(b),item->ports[index]);
Per Liden4323add2006-01-18 00:38:21 +0100205 tipc_port_recv_msg(b);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100206 }
207 }
208exit:
209 buf_discard(buf);
Per Liden4323add2006-01-18 00:38:21 +0100210 tipc_port_list_free(dp);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100211}
212
213/**
Allan Stephens7ef43eb2008-05-12 15:42:28 -0700214 * tipc_createport_raw - create a generic TIPC port
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900215 *
Allan Stephens7ef43eb2008-05-12 15:42:28 -0700216 * Returns port reference, or 0 if unable to create it
217 *
218 * Note: The newly created port is returned in the locked state.
Per Lidenb97bf3f2006-01-02 19:04:38 +0100219 */
220
221u32 tipc_createport_raw(void *usr_handle,
222 u32 (*dispatcher)(struct tipc_port *, struct sk_buff *),
223 void (*wakeup)(struct tipc_port *),
Allan Stephens7ef43eb2008-05-12 15:42:28 -0700224 const u32 importance,
225 struct tipc_port **tp_ptr)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100226{
227 struct port *p_ptr;
228 struct tipc_msg *msg;
229 u32 ref;
230
Panagiotis Issaris0da974f2006-07-21 14:51:30 -0700231 p_ptr = kzalloc(sizeof(*p_ptr), GFP_ATOMIC);
Allan Stephensa10bd922006-06-25 23:52:17 -0700232 if (!p_ptr) {
233 warn("Port creation failed, no memory\n");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100234 return 0;
235 }
Per Liden4323add2006-01-18 00:38:21 +0100236 ref = tipc_ref_acquire(p_ptr, &p_ptr->publ.lock);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100237 if (!ref) {
Allan Stephensa10bd922006-06-25 23:52:17 -0700238 warn("Port creation failed, reference table exhausted\n");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100239 kfree(p_ptr);
240 return 0;
241 }
242
Allan Stephens05646c92007-06-10 17:25:24 -0700243 p_ptr->publ.usr_handle = usr_handle;
244 p_ptr->publ.max_pkt = MAX_PKT_DEFAULT;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100245 p_ptr->publ.ref = ref;
246 msg = &p_ptr->publ.phdr;
Allan Stephens06d82c92008-03-06 15:06:55 -0800247 msg_init(msg, TIPC_LOW_IMPORTANCE, TIPC_NAMED_MSG, TIPC_OK, LONG_H_SIZE,
248 0);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100249 msg_set_orignode(msg, tipc_own_addr);
250 msg_set_prevnode(msg, tipc_own_addr);
251 msg_set_origport(msg, ref);
252 msg_set_importance(msg,importance);
253 p_ptr->last_in_seqno = 41;
254 p_ptr->sent = 1;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100255 INIT_LIST_HEAD(&p_ptr->wait_list);
256 INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list);
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800257 p_ptr->congested_link = NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100258 p_ptr->dispatcher = dispatcher;
259 p_ptr->wakeup = wakeup;
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800260 p_ptr->user_port = NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100261 k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref);
Per Liden4323add2006-01-18 00:38:21 +0100262 spin_lock_bh(&tipc_port_list_lock);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100263 INIT_LIST_HEAD(&p_ptr->publications);
264 INIT_LIST_HEAD(&p_ptr->port_list);
265 list_add_tail(&p_ptr->port_list, &ports);
Per Liden4323add2006-01-18 00:38:21 +0100266 spin_unlock_bh(&tipc_port_list_lock);
Allan Stephens7ef43eb2008-05-12 15:42:28 -0700267 *tp_ptr = &p_ptr->publ;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100268 return ref;
269}
270
271int tipc_deleteport(u32 ref)
272{
273 struct port *p_ptr;
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800274 struct sk_buff *buf = NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100275
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800276 tipc_withdraw(ref, 0, NULL);
Per Liden4323add2006-01-18 00:38:21 +0100277 p_ptr = tipc_port_lock(ref);
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900278 if (!p_ptr)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100279 return -EINVAL;
280
Per Liden4323add2006-01-18 00:38:21 +0100281 tipc_ref_discard(ref);
282 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100283
284 k_cancel_timer(&p_ptr->timer);
285 if (p_ptr->publ.connected) {
286 buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT);
Per Liden4323add2006-01-18 00:38:21 +0100287 tipc_nodesub_unsubscribe(&p_ptr->subscription);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100288 }
289 if (p_ptr->user_port) {
Per Liden4323add2006-01-18 00:38:21 +0100290 tipc_reg_remove_port(p_ptr->user_port);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100291 kfree(p_ptr->user_port);
292 }
293
Per Liden4323add2006-01-18 00:38:21 +0100294 spin_lock_bh(&tipc_port_list_lock);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100295 list_del(&p_ptr->port_list);
296 list_del(&p_ptr->wait_list);
Per Liden4323add2006-01-18 00:38:21 +0100297 spin_unlock_bh(&tipc_port_list_lock);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100298 k_term_timer(&p_ptr->timer);
299 kfree(p_ptr);
300 dbg("Deleted port %u\n", ref);
Per Liden4323add2006-01-18 00:38:21 +0100301 tipc_net_route_msg(buf);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100302 return TIPC_OK;
303}
304
305/**
306 * tipc_get_port() - return port associated with 'ref'
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900307 *
Per Lidenb97bf3f2006-01-02 19:04:38 +0100308 * Note: Port is not locked.
309 */
310
311struct tipc_port *tipc_get_port(const u32 ref)
312{
Per Liden4323add2006-01-18 00:38:21 +0100313 return (struct tipc_port *)tipc_ref_deref(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100314}
315
316/**
317 * tipc_get_handle - return user handle associated to port 'ref'
318 */
319
320void *tipc_get_handle(const u32 ref)
321{
322 struct port *p_ptr;
323 void * handle;
324
Per Liden4323add2006-01-18 00:38:21 +0100325 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100326 if (!p_ptr)
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800327 return NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100328 handle = p_ptr->publ.usr_handle;
Per Liden4323add2006-01-18 00:38:21 +0100329 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100330 return handle;
331}
332
Sam Ravnborg05790c62006-03-20 22:37:04 -0800333static int port_unreliable(struct port *p_ptr)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100334{
335 return msg_src_droppable(&p_ptr->publ.phdr);
336}
337
338int tipc_portunreliable(u32 ref, unsigned int *isunreliable)
339{
340 struct port *p_ptr;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900341
Per Liden4323add2006-01-18 00:38:21 +0100342 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100343 if (!p_ptr)
344 return -EINVAL;
345 *isunreliable = port_unreliable(p_ptr);
Julia Lawall4cec72c2008-01-08 23:48:20 -0800346 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100347 return TIPC_OK;
348}
349
350int tipc_set_portunreliable(u32 ref, unsigned int isunreliable)
351{
352 struct port *p_ptr;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900353
Per Liden4323add2006-01-18 00:38:21 +0100354 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100355 if (!p_ptr)
356 return -EINVAL;
357 msg_set_src_droppable(&p_ptr->publ.phdr, (isunreliable != 0));
Per Liden4323add2006-01-18 00:38:21 +0100358 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100359 return TIPC_OK;
360}
361
Sam Ravnborg05790c62006-03-20 22:37:04 -0800362static int port_unreturnable(struct port *p_ptr)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100363{
364 return msg_dest_droppable(&p_ptr->publ.phdr);
365}
366
367int tipc_portunreturnable(u32 ref, unsigned int *isunrejectable)
368{
369 struct port *p_ptr;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900370
Per Liden4323add2006-01-18 00:38:21 +0100371 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100372 if (!p_ptr)
373 return -EINVAL;
374 *isunrejectable = port_unreturnable(p_ptr);
Julia Lawall4cec72c2008-01-08 23:48:20 -0800375 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100376 return TIPC_OK;
377}
378
379int tipc_set_portunreturnable(u32 ref, unsigned int isunrejectable)
380{
381 struct port *p_ptr;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900382
Per Liden4323add2006-01-18 00:38:21 +0100383 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100384 if (!p_ptr)
385 return -EINVAL;
386 msg_set_dest_droppable(&p_ptr->publ.phdr, (isunrejectable != 0));
Per Liden4323add2006-01-18 00:38:21 +0100387 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100388 return TIPC_OK;
389}
390
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900391/*
392 * port_build_proto_msg(): build a port level protocol
393 * or a connection abortion message. Called with
Per Lidenb97bf3f2006-01-02 19:04:38 +0100394 * tipc_port lock on.
395 */
396static struct sk_buff *port_build_proto_msg(u32 destport, u32 destnode,
397 u32 origport, u32 orignode,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900398 u32 usr, u32 type, u32 err,
Per Lidenb97bf3f2006-01-02 19:04:38 +0100399 u32 seqno, u32 ack)
400{
401 struct sk_buff *buf;
402 struct tipc_msg *msg;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900403
Per Lidenb97bf3f2006-01-02 19:04:38 +0100404 buf = buf_acquire(LONG_H_SIZE);
405 if (buf) {
406 msg = buf_msg(buf);
407 msg_init(msg, usr, type, err, LONG_H_SIZE, destnode);
408 msg_set_destport(msg, destport);
409 msg_set_origport(msg, origport);
410 msg_set_destnode(msg, destnode);
411 msg_set_orignode(msg, orignode);
412 msg_set_transp_seqno(msg, seqno);
413 msg_set_msgcnt(msg, ack);
414 msg_dbg(msg, "PORT>SEND>:");
415 }
416 return buf;
417}
418
Per Lidenb97bf3f2006-01-02 19:04:38 +0100419int tipc_reject_msg(struct sk_buff *buf, u32 err)
420{
421 struct tipc_msg *msg = buf_msg(buf);
422 struct sk_buff *rbuf;
423 struct tipc_msg *rmsg;
424 int hdr_sz;
425 u32 imp = msg_importance(msg);
426 u32 data_sz = msg_data_sz(msg);
427
428 if (data_sz > MAX_REJECT_SIZE)
429 data_sz = MAX_REJECT_SIZE;
430 if (msg_connected(msg) && (imp < TIPC_CRITICAL_IMPORTANCE))
431 imp++;
432 msg_dbg(msg, "port->rej: ");
433
434 /* discard rejected message if it shouldn't be returned to sender */
435 if (msg_errcode(msg) || msg_dest_droppable(msg)) {
436 buf_discard(buf);
437 return data_sz;
438 }
439
440 /* construct rejected message */
441 if (msg_mcast(msg))
442 hdr_sz = MCAST_H_SIZE;
443 else
444 hdr_sz = LONG_H_SIZE;
445 rbuf = buf_acquire(data_sz + hdr_sz);
446 if (rbuf == NULL) {
447 buf_discard(buf);
448 return data_sz;
449 }
450 rmsg = buf_msg(rbuf);
451 msg_init(rmsg, imp, msg_type(msg), err, hdr_sz, msg_orignode(msg));
452 msg_set_destport(rmsg, msg_origport(msg));
453 msg_set_prevnode(rmsg, tipc_own_addr);
454 msg_set_origport(rmsg, msg_destport(msg));
455 if (msg_short(msg))
456 msg_set_orignode(rmsg, tipc_own_addr);
457 else
458 msg_set_orignode(rmsg, msg_destnode(msg));
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900459 msg_set_size(rmsg, data_sz + hdr_sz);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100460 msg_set_nametype(rmsg, msg_nametype(msg));
461 msg_set_nameinst(rmsg, msg_nameinst(msg));
Arnaldo Carvalho de Melo27d7ff42007-03-31 11:55:19 -0300462 skb_copy_to_linear_data_offset(rbuf, hdr_sz, msg_data(msg), data_sz);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100463
464 /* send self-abort message when rejecting on a connected port */
465 if (msg_connected(msg)) {
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800466 struct sk_buff *abuf = NULL;
Per Liden4323add2006-01-18 00:38:21 +0100467 struct port *p_ptr = tipc_port_lock(msg_destport(msg));
Per Lidenb97bf3f2006-01-02 19:04:38 +0100468
469 if (p_ptr) {
470 if (p_ptr->publ.connected)
471 abuf = port_build_self_abort_msg(p_ptr, err);
Per Liden4323add2006-01-18 00:38:21 +0100472 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100473 }
Per Liden4323add2006-01-18 00:38:21 +0100474 tipc_net_route_msg(abuf);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100475 }
476
477 /* send rejected message */
478 buf_discard(buf);
Per Liden4323add2006-01-18 00:38:21 +0100479 tipc_net_route_msg(rbuf);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100480 return data_sz;
481}
482
Per Liden4323add2006-01-18 00:38:21 +0100483int tipc_port_reject_sections(struct port *p_ptr, struct tipc_msg *hdr,
484 struct iovec const *msg_sect, u32 num_sect,
485 int err)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100486{
487 struct sk_buff *buf;
488 int res;
489
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900490 res = msg_build(hdr, msg_sect, num_sect, MAX_MSG_SIZE,
Per Lidenb97bf3f2006-01-02 19:04:38 +0100491 !p_ptr->user_port, &buf);
492 if (!buf)
493 return res;
494
495 return tipc_reject_msg(buf, err);
496}
497
498static void port_timeout(unsigned long ref)
499{
Per Liden4323add2006-01-18 00:38:21 +0100500 struct port *p_ptr = tipc_port_lock(ref);
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800501 struct sk_buff *buf = NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100502
Allan Stephens065fd172006-10-16 21:38:05 -0700503 if (!p_ptr)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100504 return;
505
Allan Stephens065fd172006-10-16 21:38:05 -0700506 if (!p_ptr->publ.connected) {
507 tipc_port_unlock(p_ptr);
508 return;
509 }
510
Per Lidenb97bf3f2006-01-02 19:04:38 +0100511 /* Last probe answered ? */
512 if (p_ptr->probing_state == PROBING) {
513 buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_PORT);
514 } else {
515 buf = port_build_proto_msg(port_peerport(p_ptr),
516 port_peernode(p_ptr),
517 p_ptr->publ.ref,
518 tipc_own_addr,
519 CONN_MANAGER,
520 CONN_PROBE,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900521 TIPC_OK,
Per Lidenb97bf3f2006-01-02 19:04:38 +0100522 port_out_seqno(p_ptr),
523 0);
524 port_incr_out_seqno(p_ptr);
525 p_ptr->probing_state = PROBING;
526 k_start_timer(&p_ptr->timer, p_ptr->probing_interval);
527 }
Per Liden4323add2006-01-18 00:38:21 +0100528 tipc_port_unlock(p_ptr);
529 tipc_net_route_msg(buf);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100530}
531
532
533static void port_handle_node_down(unsigned long ref)
534{
Per Liden4323add2006-01-18 00:38:21 +0100535 struct port *p_ptr = tipc_port_lock(ref);
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800536 struct sk_buff* buf = NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100537
538 if (!p_ptr)
539 return;
540 buf = port_build_self_abort_msg(p_ptr, TIPC_ERR_NO_NODE);
Per Liden4323add2006-01-18 00:38:21 +0100541 tipc_port_unlock(p_ptr);
542 tipc_net_route_msg(buf);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100543}
544
545
546static struct sk_buff *port_build_self_abort_msg(struct port *p_ptr, u32 err)
547{
548 u32 imp = msg_importance(&p_ptr->publ.phdr);
549
550 if (!p_ptr->publ.connected)
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800551 return NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100552 if (imp < TIPC_CRITICAL_IMPORTANCE)
553 imp++;
554 return port_build_proto_msg(p_ptr->publ.ref,
555 tipc_own_addr,
556 port_peerport(p_ptr),
557 port_peernode(p_ptr),
558 imp,
559 TIPC_CONN_MSG,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900560 err,
Per Lidenb97bf3f2006-01-02 19:04:38 +0100561 p_ptr->last_in_seqno + 1,
562 0);
563}
564
565
566static struct sk_buff *port_build_peer_abort_msg(struct port *p_ptr, u32 err)
567{
568 u32 imp = msg_importance(&p_ptr->publ.phdr);
569
570 if (!p_ptr->publ.connected)
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800571 return NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100572 if (imp < TIPC_CRITICAL_IMPORTANCE)
573 imp++;
574 return port_build_proto_msg(port_peerport(p_ptr),
575 port_peernode(p_ptr),
576 p_ptr->publ.ref,
577 tipc_own_addr,
578 imp,
579 TIPC_CONN_MSG,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900580 err,
Per Lidenb97bf3f2006-01-02 19:04:38 +0100581 port_out_seqno(p_ptr),
582 0);
583}
584
Per Liden4323add2006-01-18 00:38:21 +0100585void tipc_port_recv_proto_msg(struct sk_buff *buf)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100586{
587 struct tipc_msg *msg = buf_msg(buf);
Per Liden4323add2006-01-18 00:38:21 +0100588 struct port *p_ptr = tipc_port_lock(msg_destport(msg));
Per Lidenb97bf3f2006-01-02 19:04:38 +0100589 u32 err = TIPC_OK;
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800590 struct sk_buff *r_buf = NULL;
591 struct sk_buff *abort_buf = NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100592
593 msg_dbg(msg, "PORT<RECV<:");
594
595 if (!p_ptr) {
596 err = TIPC_ERR_NO_PORT;
597 } else if (p_ptr->publ.connected) {
598 if (port_peernode(p_ptr) != msg_orignode(msg))
599 err = TIPC_ERR_NO_PORT;
600 if (port_peerport(p_ptr) != msg_origport(msg))
601 err = TIPC_ERR_NO_PORT;
602 if (!err && msg_routed(msg)) {
603 u32 seqno = msg_transp_seqno(msg);
604 u32 myno = ++p_ptr->last_in_seqno;
605 if (seqno != myno) {
606 err = TIPC_ERR_NO_PORT;
607 abort_buf = port_build_self_abort_msg(p_ptr, err);
608 }
609 }
610 if (msg_type(msg) == CONN_ACK) {
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900611 int wakeup = tipc_port_congested(p_ptr) &&
Per Lidenb97bf3f2006-01-02 19:04:38 +0100612 p_ptr->publ.congested &&
613 p_ptr->wakeup;
614 p_ptr->acked += msg_msgcnt(msg);
Per Liden4323add2006-01-18 00:38:21 +0100615 if (tipc_port_congested(p_ptr))
Per Lidenb97bf3f2006-01-02 19:04:38 +0100616 goto exit;
617 p_ptr->publ.congested = 0;
618 if (!wakeup)
619 goto exit;
620 p_ptr->wakeup(&p_ptr->publ);
621 goto exit;
622 }
623 } else if (p_ptr->publ.published) {
624 err = TIPC_ERR_NO_PORT;
625 }
626 if (err) {
627 r_buf = port_build_proto_msg(msg_origport(msg),
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900628 msg_orignode(msg),
629 msg_destport(msg),
Per Lidenb97bf3f2006-01-02 19:04:38 +0100630 tipc_own_addr,
Allan Stephens06d82c92008-03-06 15:06:55 -0800631 TIPC_HIGH_IMPORTANCE,
Per Lidenb97bf3f2006-01-02 19:04:38 +0100632 TIPC_CONN_MSG,
633 err,
634 0,
635 0);
636 goto exit;
637 }
638
639 /* All is fine */
640 if (msg_type(msg) == CONN_PROBE) {
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900641 r_buf = port_build_proto_msg(msg_origport(msg),
642 msg_orignode(msg),
643 msg_destport(msg),
644 tipc_own_addr,
Per Lidenb97bf3f2006-01-02 19:04:38 +0100645 CONN_MANAGER,
646 CONN_PROBE_REPLY,
647 TIPC_OK,
648 port_out_seqno(p_ptr),
649 0);
650 }
651 p_ptr->probing_state = CONFIRMED;
652 port_incr_out_seqno(p_ptr);
653exit:
654 if (p_ptr)
Per Liden4323add2006-01-18 00:38:21 +0100655 tipc_port_unlock(p_ptr);
656 tipc_net_route_msg(r_buf);
657 tipc_net_route_msg(abort_buf);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100658 buf_discard(buf);
659}
660
661static void port_print(struct port *p_ptr, struct print_buf *buf, int full_id)
662{
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900663 struct publication *publ;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100664
665 if (full_id)
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900666 tipc_printf(buf, "<%u.%u.%u:%u>:",
Per Lidenb97bf3f2006-01-02 19:04:38 +0100667 tipc_zone(tipc_own_addr), tipc_cluster(tipc_own_addr),
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900668 tipc_node(tipc_own_addr), p_ptr->publ.ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100669 else
670 tipc_printf(buf, "%-10u:", p_ptr->publ.ref);
671
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900672 if (p_ptr->publ.connected) {
673 u32 dport = port_peerport(p_ptr);
674 u32 destnode = port_peernode(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100675
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900676 tipc_printf(buf, " connected to <%u.%u.%u:%u>",
677 tipc_zone(destnode), tipc_cluster(destnode),
678 tipc_node(destnode), dport);
679 if (p_ptr->publ.conn_type != 0)
680 tipc_printf(buf, " via {%u,%u}",
681 p_ptr->publ.conn_type,
682 p_ptr->publ.conn_instance);
683 }
684 else if (p_ptr->publ.published) {
685 tipc_printf(buf, " bound to");
686 list_for_each_entry(publ, &p_ptr->publications, pport_list) {
Per Lidenb97bf3f2006-01-02 19:04:38 +0100687 if (publ->lower == publ->upper)
688 tipc_printf(buf, " {%u,%u}", publ->type,
689 publ->lower);
690 else
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900691 tipc_printf(buf, " {%u,%u,%u}", publ->type,
Per Lidenb97bf3f2006-01-02 19:04:38 +0100692 publ->lower, publ->upper);
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900693 }
694 }
695 tipc_printf(buf, "\n");
Per Lidenb97bf3f2006-01-02 19:04:38 +0100696}
697
698#define MAX_PORT_QUERY 32768
699
Per Liden4323add2006-01-18 00:38:21 +0100700struct sk_buff *tipc_port_get_ports(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100701{
702 struct sk_buff *buf;
703 struct tlv_desc *rep_tlv;
704 struct print_buf pb;
705 struct port *p_ptr;
706 int str_len;
707
Per Liden4323add2006-01-18 00:38:21 +0100708 buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_QUERY));
Per Lidenb97bf3f2006-01-02 19:04:38 +0100709 if (!buf)
710 return NULL;
711 rep_tlv = (struct tlv_desc *)buf->data;
712
Per Liden4323add2006-01-18 00:38:21 +0100713 tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_QUERY);
714 spin_lock_bh(&tipc_port_list_lock);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100715 list_for_each_entry(p_ptr, &ports, port_list) {
716 spin_lock_bh(p_ptr->publ.lock);
717 port_print(p_ptr, &pb, 0);
718 spin_unlock_bh(p_ptr->publ.lock);
719 }
Per Liden4323add2006-01-18 00:38:21 +0100720 spin_unlock_bh(&tipc_port_list_lock);
721 str_len = tipc_printbuf_validate(&pb);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100722
723 skb_put(buf, TLV_SPACE(str_len));
724 TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len);
725
726 return buf;
727}
728
729#if 0
730
731#define MAX_PORT_STATS 2000
732
733struct sk_buff *port_show_stats(const void *req_tlv_area, int req_tlv_space)
734{
735 u32 ref;
736 struct port *p_ptr;
737 struct sk_buff *buf;
738 struct tlv_desc *rep_tlv;
739 struct print_buf pb;
740 int str_len;
741
742 if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_PORT_REF))
743 return cfg_reply_error_string(TIPC_CFG_TLV_ERROR);
744
745 ref = *(u32 *)TLV_DATA(req_tlv_area);
746 ref = ntohl(ref);
747
Per Liden4323add2006-01-18 00:38:21 +0100748 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100749 if (!p_ptr)
750 return cfg_reply_error_string("port not found");
751
Per Liden4323add2006-01-18 00:38:21 +0100752 buf = tipc_cfg_reply_alloc(TLV_SPACE(MAX_PORT_STATS));
Per Lidenb97bf3f2006-01-02 19:04:38 +0100753 if (!buf) {
Per Liden4323add2006-01-18 00:38:21 +0100754 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100755 return NULL;
756 }
757 rep_tlv = (struct tlv_desc *)buf->data;
758
Per Liden4323add2006-01-18 00:38:21 +0100759 tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), MAX_PORT_STATS);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100760 port_print(p_ptr, &pb, 1);
761 /* NEED TO FILL IN ADDITIONAL PORT STATISTICS HERE */
Per Liden4323add2006-01-18 00:38:21 +0100762 tipc_port_unlock(p_ptr);
763 str_len = tipc_printbuf_validate(&pb);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100764
765 skb_put(buf, TLV_SPACE(str_len));
766 TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len);
767
768 return buf;
769}
770
771#endif
772
Per Liden4323add2006-01-18 00:38:21 +0100773void tipc_port_reinit(void)
Per Lidenb97bf3f2006-01-02 19:04:38 +0100774{
775 struct port *p_ptr;
776 struct tipc_msg *msg;
777
Per Liden4323add2006-01-18 00:38:21 +0100778 spin_lock_bh(&tipc_port_list_lock);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100779 list_for_each_entry(p_ptr, &ports, port_list) {
780 msg = &p_ptr->publ.phdr;
781 if (msg_orignode(msg) == tipc_own_addr)
782 break;
783 msg_set_orignode(msg, tipc_own_addr);
784 }
Per Liden4323add2006-01-18 00:38:21 +0100785 spin_unlock_bh(&tipc_port_list_lock);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100786}
787
788
789/*
790 * port_dispatcher_sigh(): Signal handler for messages destinated
791 * to the tipc_port interface.
792 */
793
794static void port_dispatcher_sigh(void *dummy)
795{
796 struct sk_buff *buf;
797
798 spin_lock_bh(&queue_lock);
799 buf = msg_queue_head;
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800800 msg_queue_head = NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100801 spin_unlock_bh(&queue_lock);
802
803 while (buf) {
804 struct port *p_ptr;
805 struct user_port *up_ptr;
806 struct tipc_portid orig;
807 struct tipc_name_seq dseq;
808 void *usr_handle;
809 int connected;
810 int published;
Allan Stephens96882432006-06-25 23:38:58 -0700811 u32 message_type;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100812
813 struct sk_buff *next = buf->next;
814 struct tipc_msg *msg = buf_msg(buf);
815 u32 dref = msg_destport(msg);
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900816
Allan Stephens96882432006-06-25 23:38:58 -0700817 message_type = msg_type(msg);
818 if (message_type > TIPC_DIRECT_MSG)
819 goto reject; /* Unsupported message type */
820
Per Liden4323add2006-01-18 00:38:21 +0100821 p_ptr = tipc_port_lock(dref);
Allan Stephens96882432006-06-25 23:38:58 -0700822 if (!p_ptr)
823 goto reject; /* Port deleted while msg in queue */
824
Per Lidenb97bf3f2006-01-02 19:04:38 +0100825 orig.ref = msg_origport(msg);
826 orig.node = msg_orignode(msg);
827 up_ptr = p_ptr->user_port;
828 usr_handle = up_ptr->usr_handle;
829 connected = p_ptr->publ.connected;
830 published = p_ptr->publ.published;
831
832 if (unlikely(msg_errcode(msg)))
833 goto err;
834
Allan Stephens96882432006-06-25 23:38:58 -0700835 switch (message_type) {
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900836
Per Lidenb97bf3f2006-01-02 19:04:38 +0100837 case TIPC_CONN_MSG:{
838 tipc_conn_msg_event cb = up_ptr->conn_msg_cb;
839 u32 peer_port = port_peerport(p_ptr);
840 u32 peer_node = port_peernode(p_ptr);
841
Julia Lawall4cec72c2008-01-08 23:48:20 -0800842 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100843 if (unlikely(!connected)) {
844 if (unlikely(published))
845 goto reject;
846 tipc_connect2port(dref,&orig);
847 }
848 if (unlikely(msg_origport(msg) != peer_port))
849 goto reject;
850 if (unlikely(msg_orignode(msg) != peer_node))
851 goto reject;
852 if (unlikely(!cb))
853 goto reject;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900854 if (unlikely(++p_ptr->publ.conn_unacked >=
Per Lidenb97bf3f2006-01-02 19:04:38 +0100855 TIPC_FLOW_CONTROL_WIN))
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900856 tipc_acknowledge(dref,
Per Lidenb97bf3f2006-01-02 19:04:38 +0100857 p_ptr->publ.conn_unacked);
858 skb_pull(buf, msg_hdr_sz(msg));
859 cb(usr_handle, dref, &buf, msg_data(msg),
860 msg_data_sz(msg));
861 break;
862 }
863 case TIPC_DIRECT_MSG:{
864 tipc_msg_event cb = up_ptr->msg_cb;
865
Julia Lawall4cec72c2008-01-08 23:48:20 -0800866 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100867 if (unlikely(connected))
868 goto reject;
869 if (unlikely(!cb))
870 goto reject;
871 skb_pull(buf, msg_hdr_sz(msg));
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900872 cb(usr_handle, dref, &buf, msg_data(msg),
Per Lidenb97bf3f2006-01-02 19:04:38 +0100873 msg_data_sz(msg), msg_importance(msg),
874 &orig);
875 break;
876 }
Allan Stephens96882432006-06-25 23:38:58 -0700877 case TIPC_MCAST_MSG:
Per Lidenb97bf3f2006-01-02 19:04:38 +0100878 case TIPC_NAMED_MSG:{
879 tipc_named_msg_event cb = up_ptr->named_msg_cb;
880
Julia Lawall4cec72c2008-01-08 23:48:20 -0800881 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100882 if (unlikely(connected))
883 goto reject;
884 if (unlikely(!cb))
885 goto reject;
886 if (unlikely(!published))
887 goto reject;
888 dseq.type = msg_nametype(msg);
889 dseq.lower = msg_nameinst(msg);
Allan Stephens96882432006-06-25 23:38:58 -0700890 dseq.upper = (message_type == TIPC_NAMED_MSG)
891 ? dseq.lower : msg_nameupper(msg);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100892 skb_pull(buf, msg_hdr_sz(msg));
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900893 cb(usr_handle, dref, &buf, msg_data(msg),
Per Lidenb97bf3f2006-01-02 19:04:38 +0100894 msg_data_sz(msg), msg_importance(msg),
895 &orig, &dseq);
896 break;
897 }
898 }
899 if (buf)
900 buf_discard(buf);
901 buf = next;
902 continue;
903err:
Allan Stephens96882432006-06-25 23:38:58 -0700904 switch (message_type) {
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900905
Per Lidenb97bf3f2006-01-02 19:04:38 +0100906 case TIPC_CONN_MSG:{
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900907 tipc_conn_shutdown_event cb =
Per Lidenb97bf3f2006-01-02 19:04:38 +0100908 up_ptr->conn_err_cb;
909 u32 peer_port = port_peerport(p_ptr);
910 u32 peer_node = port_peernode(p_ptr);
911
Julia Lawall4cec72c2008-01-08 23:48:20 -0800912 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100913 if (!connected || !cb)
914 break;
915 if (msg_origport(msg) != peer_port)
916 break;
917 if (msg_orignode(msg) != peer_node)
918 break;
919 tipc_disconnect(dref);
920 skb_pull(buf, msg_hdr_sz(msg));
921 cb(usr_handle, dref, &buf, msg_data(msg),
922 msg_data_sz(msg), msg_errcode(msg));
923 break;
924 }
925 case TIPC_DIRECT_MSG:{
926 tipc_msg_err_event cb = up_ptr->err_cb;
927
Julia Lawall4cec72c2008-01-08 23:48:20 -0800928 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100929 if (connected || !cb)
930 break;
931 skb_pull(buf, msg_hdr_sz(msg));
932 cb(usr_handle, dref, &buf, msg_data(msg),
933 msg_data_sz(msg), msg_errcode(msg), &orig);
934 break;
935 }
Allan Stephens96882432006-06-25 23:38:58 -0700936 case TIPC_MCAST_MSG:
Per Lidenb97bf3f2006-01-02 19:04:38 +0100937 case TIPC_NAMED_MSG:{
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900938 tipc_named_msg_err_event cb =
Per Lidenb97bf3f2006-01-02 19:04:38 +0100939 up_ptr->named_err_cb;
940
Julia Lawall4cec72c2008-01-08 23:48:20 -0800941 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100942 if (connected || !cb)
943 break;
944 dseq.type = msg_nametype(msg);
945 dseq.lower = msg_nameinst(msg);
Allan Stephens96882432006-06-25 23:38:58 -0700946 dseq.upper = (message_type == TIPC_NAMED_MSG)
947 ? dseq.lower : msg_nameupper(msg);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100948 skb_pull(buf, msg_hdr_sz(msg));
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900949 cb(usr_handle, dref, &buf, msg_data(msg),
Per Lidenb97bf3f2006-01-02 19:04:38 +0100950 msg_data_sz(msg), msg_errcode(msg), &dseq);
951 break;
952 }
953 }
954 if (buf)
955 buf_discard(buf);
956 buf = next;
957 continue;
958reject:
959 tipc_reject_msg(buf, TIPC_ERR_NO_PORT);
960 buf = next;
961 }
962}
963
964/*
965 * port_dispatcher(): Dispatcher for messages destinated
966 * to the tipc_port interface. Called with port locked.
967 */
968
969static u32 port_dispatcher(struct tipc_port *dummy, struct sk_buff *buf)
970{
971 buf->next = NULL;
972 spin_lock_bh(&queue_lock);
973 if (msg_queue_head) {
974 msg_queue_tail->next = buf;
975 msg_queue_tail = buf;
976 } else {
977 msg_queue_tail = msg_queue_head = buf;
Per Liden4323add2006-01-18 00:38:21 +0100978 tipc_k_signal((Handler)port_dispatcher_sigh, 0);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100979 }
980 spin_unlock_bh(&queue_lock);
981 return TIPC_OK;
982}
983
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900984/*
Per Lidenb97bf3f2006-01-02 19:04:38 +0100985 * Wake up port after congestion: Called with port locked,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +0900986 *
Per Lidenb97bf3f2006-01-02 19:04:38 +0100987 */
988
989static void port_wakeup_sh(unsigned long ref)
990{
991 struct port *p_ptr;
992 struct user_port *up_ptr;
Sam Ravnborg1fc54d82006-03-20 22:36:47 -0800993 tipc_continue_event cb = NULL;
994 void *uh = NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +0100995
Per Liden4323add2006-01-18 00:38:21 +0100996 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +0100997 if (p_ptr) {
998 up_ptr = p_ptr->user_port;
999 if (up_ptr) {
1000 cb = up_ptr->continue_event_cb;
1001 uh = up_ptr->usr_handle;
1002 }
Per Liden4323add2006-01-18 00:38:21 +01001003 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001004 }
1005 if (cb)
1006 cb(uh, ref);
1007}
1008
1009
1010static void port_wakeup(struct tipc_port *p_ptr)
1011{
Per Liden4323add2006-01-18 00:38:21 +01001012 tipc_k_signal((Handler)port_wakeup_sh, p_ptr->ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001013}
1014
1015void tipc_acknowledge(u32 ref, u32 ack)
1016{
1017 struct port *p_ptr;
Sam Ravnborg1fc54d82006-03-20 22:36:47 -08001018 struct sk_buff *buf = NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +01001019
Per Liden4323add2006-01-18 00:38:21 +01001020 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001021 if (!p_ptr)
1022 return;
1023 if (p_ptr->publ.connected) {
1024 p_ptr->publ.conn_unacked -= ack;
1025 buf = port_build_proto_msg(port_peerport(p_ptr),
1026 port_peernode(p_ptr),
1027 ref,
1028 tipc_own_addr,
1029 CONN_MANAGER,
1030 CONN_ACK,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001031 TIPC_OK,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001032 port_out_seqno(p_ptr),
1033 ack);
1034 }
Per Liden4323add2006-01-18 00:38:21 +01001035 tipc_port_unlock(p_ptr);
1036 tipc_net_route_msg(buf);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001037}
1038
1039/*
1040 * tipc_createport(): user level call. Will add port to
1041 * registry if non-zero user_ref.
1042 */
1043
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001044int tipc_createport(u32 user_ref,
1045 void *usr_handle,
1046 unsigned int importance,
1047 tipc_msg_err_event error_cb,
1048 tipc_named_msg_err_event named_error_cb,
1049 tipc_conn_shutdown_event conn_error_cb,
1050 tipc_msg_event msg_cb,
1051 tipc_named_msg_event named_msg_cb,
1052 tipc_conn_msg_event conn_msg_cb,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001053 tipc_continue_event continue_event_cb,/* May be zero */
1054 u32 *portref)
1055{
1056 struct user_port *up_ptr;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001057 struct port *p_ptr;
Allan Stephens7ef43eb2008-05-12 15:42:28 -07001058 struct tipc_port *tp_ptr;
Per Lidenb97bf3f2006-01-02 19:04:38 +01001059 u32 ref;
1060
Panagiotis Issaris0da974f2006-07-21 14:51:30 -07001061 up_ptr = kmalloc(sizeof(*up_ptr), GFP_ATOMIC);
Allan Stephensa10bd922006-06-25 23:52:17 -07001062 if (!up_ptr) {
Allan Stephensa75bf872006-06-25 23:50:01 -07001063 warn("Port creation failed, no memory\n");
Per Lidenb97bf3f2006-01-02 19:04:38 +01001064 return -ENOMEM;
1065 }
Allan Stephens7ef43eb2008-05-12 15:42:28 -07001066 ref = tipc_createport_raw(NULL, port_dispatcher, port_wakeup,
1067 importance, &tp_ptr);
1068 if (ref == 0) {
Per Lidenb97bf3f2006-01-02 19:04:38 +01001069 kfree(up_ptr);
1070 return -ENOMEM;
1071 }
Allan Stephens7ef43eb2008-05-12 15:42:28 -07001072 p_ptr = (struct port *)tp_ptr;
Per Lidenb97bf3f2006-01-02 19:04:38 +01001073
1074 p_ptr->user_port = up_ptr;
1075 up_ptr->user_ref = user_ref;
1076 up_ptr->usr_handle = usr_handle;
1077 up_ptr->ref = p_ptr->publ.ref;
1078 up_ptr->err_cb = error_cb;
1079 up_ptr->named_err_cb = named_error_cb;
1080 up_ptr->conn_err_cb = conn_error_cb;
1081 up_ptr->msg_cb = msg_cb;
1082 up_ptr->named_msg_cb = named_msg_cb;
1083 up_ptr->conn_msg_cb = conn_msg_cb;
1084 up_ptr->continue_event_cb = continue_event_cb;
1085 INIT_LIST_HEAD(&up_ptr->uport_list);
Per Liden4323add2006-01-18 00:38:21 +01001086 tipc_reg_add_port(up_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001087 *portref = p_ptr->publ.ref;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001088 dbg(" tipc_createport: %x with ref %u\n", p_ptr, p_ptr->publ.ref);
Per Liden4323add2006-01-18 00:38:21 +01001089 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001090 return TIPC_OK;
1091}
1092
1093int tipc_ownidentity(u32 ref, struct tipc_portid *id)
1094{
1095 id->ref = ref;
1096 id->node = tipc_own_addr;
1097 return TIPC_OK;
1098}
1099
1100int tipc_portimportance(u32 ref, unsigned int *importance)
1101{
1102 struct port *p_ptr;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001103
Per Liden4323add2006-01-18 00:38:21 +01001104 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001105 if (!p_ptr)
1106 return -EINVAL;
1107 *importance = (unsigned int)msg_importance(&p_ptr->publ.phdr);
Julia Lawall4cec72c2008-01-08 23:48:20 -08001108 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001109 return TIPC_OK;
1110}
1111
1112int tipc_set_portimportance(u32 ref, unsigned int imp)
1113{
1114 struct port *p_ptr;
1115
1116 if (imp > TIPC_CRITICAL_IMPORTANCE)
1117 return -EINVAL;
1118
Per Liden4323add2006-01-18 00:38:21 +01001119 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001120 if (!p_ptr)
1121 return -EINVAL;
1122 msg_set_importance(&p_ptr->publ.phdr, (u32)imp);
Julia Lawall4cec72c2008-01-08 23:48:20 -08001123 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001124 return TIPC_OK;
1125}
1126
1127
1128int tipc_publish(u32 ref, unsigned int scope, struct tipc_name_seq const *seq)
1129{
1130 struct port *p_ptr;
1131 struct publication *publ;
1132 u32 key;
1133 int res = -EINVAL;
1134
Per Liden4323add2006-01-18 00:38:21 +01001135 p_ptr = tipc_port_lock(ref);
Adrian Bunkd55b4c62006-10-31 16:59:35 -08001136 if (!p_ptr)
1137 return -EINVAL;
1138
Per Lidenb97bf3f2006-01-02 19:04:38 +01001139 dbg("tipc_publ %u, p_ptr = %x, conn = %x, scope = %x, "
1140 "lower = %u, upper = %u\n",
1141 ref, p_ptr, p_ptr->publ.connected, scope, seq->lower, seq->upper);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001142 if (p_ptr->publ.connected)
1143 goto exit;
1144 if (seq->lower > seq->upper)
1145 goto exit;
1146 if ((scope < TIPC_ZONE_SCOPE) || (scope > TIPC_NODE_SCOPE))
1147 goto exit;
1148 key = ref + p_ptr->pub_count + 1;
1149 if (key == ref) {
1150 res = -EADDRINUSE;
1151 goto exit;
1152 }
Per Liden4323add2006-01-18 00:38:21 +01001153 publ = tipc_nametbl_publish(seq->type, seq->lower, seq->upper,
1154 scope, p_ptr->publ.ref, key);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001155 if (publ) {
1156 list_add(&publ->pport_list, &p_ptr->publications);
1157 p_ptr->pub_count++;
1158 p_ptr->publ.published = 1;
1159 res = TIPC_OK;
1160 }
1161exit:
Per Liden4323add2006-01-18 00:38:21 +01001162 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001163 return res;
1164}
1165
1166int tipc_withdraw(u32 ref, unsigned int scope, struct tipc_name_seq const *seq)
1167{
1168 struct port *p_ptr;
1169 struct publication *publ;
1170 struct publication *tpubl;
1171 int res = -EINVAL;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001172
Per Liden4323add2006-01-18 00:38:21 +01001173 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001174 if (!p_ptr)
1175 return -EINVAL;
Per Lidenb97bf3f2006-01-02 19:04:38 +01001176 if (!seq) {
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001177 list_for_each_entry_safe(publ, tpubl,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001178 &p_ptr->publications, pport_list) {
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001179 tipc_nametbl_withdraw(publ->type, publ->lower,
Per Liden4323add2006-01-18 00:38:21 +01001180 publ->ref, publ->key);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001181 }
1182 res = TIPC_OK;
1183 } else {
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001184 list_for_each_entry_safe(publ, tpubl,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001185 &p_ptr->publications, pport_list) {
1186 if (publ->scope != scope)
1187 continue;
1188 if (publ->type != seq->type)
1189 continue;
1190 if (publ->lower != seq->lower)
1191 continue;
1192 if (publ->upper != seq->upper)
1193 break;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001194 tipc_nametbl_withdraw(publ->type, publ->lower,
Per Liden4323add2006-01-18 00:38:21 +01001195 publ->ref, publ->key);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001196 res = TIPC_OK;
1197 break;
1198 }
1199 }
1200 if (list_empty(&p_ptr->publications))
1201 p_ptr->publ.published = 0;
Per Liden4323add2006-01-18 00:38:21 +01001202 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001203 return res;
1204}
1205
1206int tipc_connect2port(u32 ref, struct tipc_portid const *peer)
1207{
1208 struct port *p_ptr;
1209 struct tipc_msg *msg;
1210 int res = -EINVAL;
1211
Per Liden4323add2006-01-18 00:38:21 +01001212 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001213 if (!p_ptr)
1214 return -EINVAL;
1215 if (p_ptr->publ.published || p_ptr->publ.connected)
1216 goto exit;
1217 if (!peer->ref)
1218 goto exit;
1219
1220 msg = &p_ptr->publ.phdr;
1221 msg_set_destnode(msg, peer->node);
1222 msg_set_destport(msg, peer->ref);
1223 msg_set_orignode(msg, tipc_own_addr);
1224 msg_set_origport(msg, p_ptr->publ.ref);
1225 msg_set_transp_seqno(msg, 42);
1226 msg_set_type(msg, TIPC_CONN_MSG);
1227 if (!may_route(peer->node))
1228 msg_set_hdr_sz(msg, SHORT_H_SIZE);
1229 else
1230 msg_set_hdr_sz(msg, LONG_H_SIZE);
1231
1232 p_ptr->probing_interval = PROBING_INTERVAL;
1233 p_ptr->probing_state = CONFIRMED;
1234 p_ptr->publ.connected = 1;
1235 k_start_timer(&p_ptr->timer, p_ptr->probing_interval);
1236
Per Liden4323add2006-01-18 00:38:21 +01001237 tipc_nodesub_subscribe(&p_ptr->subscription,peer->node,
David S. Miller880b0052006-01-12 13:22:32 -08001238 (void *)(unsigned long)ref,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001239 (net_ev_handler)port_handle_node_down);
1240 res = TIPC_OK;
1241exit:
Per Liden4323add2006-01-18 00:38:21 +01001242 tipc_port_unlock(p_ptr);
Allan Stephens05646c92007-06-10 17:25:24 -07001243 p_ptr->publ.max_pkt = tipc_link_get_max_pkt(peer->node, ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001244 return res;
1245}
1246
Allan Stephens0c3141e2008-04-15 00:22:02 -07001247/**
1248 * tipc_disconnect_port - disconnect port from peer
1249 *
1250 * Port must be locked.
1251 */
1252
1253int tipc_disconnect_port(struct tipc_port *tp_ptr)
1254{
1255 int res;
1256
1257 if (tp_ptr->connected) {
1258 tp_ptr->connected = 0;
1259 /* let timer expire on it's own to avoid deadlock! */
1260 tipc_nodesub_unsubscribe(
1261 &((struct port *)tp_ptr)->subscription);
1262 res = TIPC_OK;
1263 } else {
1264 res = -ENOTCONN;
1265 }
1266 return res;
1267}
1268
Per Lidenb97bf3f2006-01-02 19:04:38 +01001269/*
1270 * tipc_disconnect(): Disconnect port form peer.
1271 * This is a node local operation.
1272 */
1273
1274int tipc_disconnect(u32 ref)
1275{
1276 struct port *p_ptr;
Allan Stephens0c3141e2008-04-15 00:22:02 -07001277 int res;
Per Lidenb97bf3f2006-01-02 19:04:38 +01001278
Per Liden4323add2006-01-18 00:38:21 +01001279 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001280 if (!p_ptr)
1281 return -EINVAL;
Allan Stephens0c3141e2008-04-15 00:22:02 -07001282 res = tipc_disconnect_port((struct tipc_port *)p_ptr);
Per Liden4323add2006-01-18 00:38:21 +01001283 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001284 return res;
1285}
1286
1287/*
1288 * tipc_shutdown(): Send a SHUTDOWN msg to peer and disconnect
1289 */
1290int tipc_shutdown(u32 ref)
1291{
1292 struct port *p_ptr;
Sam Ravnborg1fc54d82006-03-20 22:36:47 -08001293 struct sk_buff *buf = NULL;
Per Lidenb97bf3f2006-01-02 19:04:38 +01001294
Per Liden4323add2006-01-18 00:38:21 +01001295 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001296 if (!p_ptr)
1297 return -EINVAL;
1298
1299 if (p_ptr->publ.connected) {
1300 u32 imp = msg_importance(&p_ptr->publ.phdr);
1301 if (imp < TIPC_CRITICAL_IMPORTANCE)
1302 imp++;
1303 buf = port_build_proto_msg(port_peerport(p_ptr),
1304 port_peernode(p_ptr),
1305 ref,
1306 tipc_own_addr,
1307 imp,
1308 TIPC_CONN_MSG,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001309 TIPC_CONN_SHUTDOWN,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001310 port_out_seqno(p_ptr),
1311 0);
1312 }
Per Liden4323add2006-01-18 00:38:21 +01001313 tipc_port_unlock(p_ptr);
1314 tipc_net_route_msg(buf);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001315 return tipc_disconnect(ref);
1316}
1317
1318int tipc_isconnected(u32 ref, int *isconnected)
1319{
1320 struct port *p_ptr;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001321
Per Liden4323add2006-01-18 00:38:21 +01001322 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001323 if (!p_ptr)
1324 return -EINVAL;
1325 *isconnected = p_ptr->publ.connected;
Per Liden4323add2006-01-18 00:38:21 +01001326 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001327 return TIPC_OK;
1328}
1329
1330int tipc_peer(u32 ref, struct tipc_portid *peer)
1331{
1332 struct port *p_ptr;
1333 int res;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001334
Per Liden4323add2006-01-18 00:38:21 +01001335 p_ptr = tipc_port_lock(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001336 if (!p_ptr)
1337 return -EINVAL;
1338 if (p_ptr->publ.connected) {
1339 peer->ref = port_peerport(p_ptr);
1340 peer->node = port_peernode(p_ptr);
1341 res = TIPC_OK;
1342 } else
1343 res = -ENOTCONN;
Per Liden4323add2006-01-18 00:38:21 +01001344 tipc_port_unlock(p_ptr);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001345 return res;
1346}
1347
1348int tipc_ref_valid(u32 ref)
1349{
1350 /* Works irrespective of type */
Per Liden4323add2006-01-18 00:38:21 +01001351 return !!tipc_ref_deref(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001352}
1353
1354
1355/*
Per Liden4323add2006-01-18 00:38:21 +01001356 * tipc_port_recv_sections(): Concatenate and deliver sectioned
Per Lidenb97bf3f2006-01-02 19:04:38 +01001357 * message for this node.
1358 */
1359
Per Liden4323add2006-01-18 00:38:21 +01001360int tipc_port_recv_sections(struct port *sender, unsigned int num_sect,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001361 struct iovec const *msg_sect)
1362{
1363 struct sk_buff *buf;
1364 int res;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001365
Per Lidenb97bf3f2006-01-02 19:04:38 +01001366 res = msg_build(&sender->publ.phdr, msg_sect, num_sect,
1367 MAX_MSG_SIZE, !sender->user_port, &buf);
1368 if (likely(buf))
Per Liden4323add2006-01-18 00:38:21 +01001369 tipc_port_recv_msg(buf);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001370 return res;
1371}
1372
1373/**
1374 * tipc_send - send message sections on connection
1375 */
1376
1377int tipc_send(u32 ref, unsigned int num_sect, struct iovec const *msg_sect)
1378{
1379 struct port *p_ptr;
1380 u32 destnode;
1381 int res;
1382
Per Liden4323add2006-01-18 00:38:21 +01001383 p_ptr = tipc_port_deref(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001384 if (!p_ptr || !p_ptr->publ.connected)
1385 return -EINVAL;
1386
1387 p_ptr->publ.congested = 1;
Per Liden4323add2006-01-18 00:38:21 +01001388 if (!tipc_port_congested(p_ptr)) {
Per Lidenb97bf3f2006-01-02 19:04:38 +01001389 destnode = port_peernode(p_ptr);
1390 if (likely(destnode != tipc_own_addr))
Per Liden4323add2006-01-18 00:38:21 +01001391 res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect,
1392 destnode);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001393 else
Per Liden4323add2006-01-18 00:38:21 +01001394 res = tipc_port_recv_sections(p_ptr, num_sect, msg_sect);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001395
1396 if (likely(res != -ELINKCONG)) {
1397 port_incr_out_seqno(p_ptr);
1398 p_ptr->publ.congested = 0;
1399 p_ptr->sent++;
1400 return res;
1401 }
1402 }
1403 if (port_unreliable(p_ptr)) {
1404 p_ptr->publ.congested = 0;
1405 /* Just calculate msg length and return */
1406 return msg_calc_data_size(msg_sect, num_sect);
1407 }
1408 return -ELINKCONG;
1409}
1410
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001411/**
Per Lidenb97bf3f2006-01-02 19:04:38 +01001412 * tipc_send_buf - send message buffer on connection
1413 */
1414
1415int tipc_send_buf(u32 ref, struct sk_buff *buf, unsigned int dsz)
1416{
1417 struct port *p_ptr;
1418 struct tipc_msg *msg;
1419 u32 destnode;
1420 u32 hsz;
1421 u32 sz;
1422 u32 res;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001423
Per Liden4323add2006-01-18 00:38:21 +01001424 p_ptr = tipc_port_deref(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001425 if (!p_ptr || !p_ptr->publ.connected)
1426 return -EINVAL;
1427
1428 msg = &p_ptr->publ.phdr;
1429 hsz = msg_hdr_sz(msg);
1430 sz = hsz + dsz;
1431 msg_set_size(msg, sz);
1432 if (skb_cow(buf, hsz))
1433 return -ENOMEM;
1434
1435 skb_push(buf, hsz);
Arnaldo Carvalho de Melo27d7ff42007-03-31 11:55:19 -03001436 skb_copy_to_linear_data(buf, msg, hsz);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001437 destnode = msg_destnode(msg);
1438 p_ptr->publ.congested = 1;
Per Liden4323add2006-01-18 00:38:21 +01001439 if (!tipc_port_congested(p_ptr)) {
Per Lidenb97bf3f2006-01-02 19:04:38 +01001440 if (likely(destnode != tipc_own_addr))
1441 res = tipc_send_buf_fast(buf, destnode);
1442 else {
Per Liden4323add2006-01-18 00:38:21 +01001443 tipc_port_recv_msg(buf);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001444 res = sz;
1445 }
1446 if (likely(res != -ELINKCONG)) {
1447 port_incr_out_seqno(p_ptr);
1448 p_ptr->sent++;
1449 p_ptr->publ.congested = 0;
1450 return res;
1451 }
1452 }
1453 if (port_unreliable(p_ptr)) {
1454 p_ptr->publ.congested = 0;
1455 return dsz;
1456 }
1457 return -ELINKCONG;
1458}
1459
1460/**
1461 * tipc_forward2name - forward message sections to port name
1462 */
1463
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001464int tipc_forward2name(u32 ref,
1465 struct tipc_name const *name,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001466 u32 domain,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001467 u32 num_sect,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001468 struct iovec const *msg_sect,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001469 struct tipc_portid const *orig,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001470 unsigned int importance)
1471{
1472 struct port *p_ptr;
1473 struct tipc_msg *msg;
1474 u32 destnode = domain;
1475 u32 destport = 0;
1476 int res;
1477
Per Liden4323add2006-01-18 00:38:21 +01001478 p_ptr = tipc_port_deref(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001479 if (!p_ptr || p_ptr->publ.connected)
1480 return -EINVAL;
1481
1482 msg = &p_ptr->publ.phdr;
1483 msg_set_type(msg, TIPC_NAMED_MSG);
1484 msg_set_orignode(msg, orig->node);
1485 msg_set_origport(msg, orig->ref);
1486 msg_set_hdr_sz(msg, LONG_H_SIZE);
1487 msg_set_nametype(msg, name->type);
1488 msg_set_nameinst(msg, name->instance);
1489 msg_set_lookup_scope(msg, addr_scope(domain));
1490 if (importance <= TIPC_CRITICAL_IMPORTANCE)
1491 msg_set_importance(msg,importance);
Per Liden4323add2006-01-18 00:38:21 +01001492 destport = tipc_nametbl_translate(name->type, name->instance, &destnode);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001493 msg_set_destnode(msg, destnode);
1494 msg_set_destport(msg, destport);
1495
1496 if (likely(destport || destnode)) {
1497 p_ptr->sent++;
1498 if (likely(destnode == tipc_own_addr))
Per Liden4323add2006-01-18 00:38:21 +01001499 return tipc_port_recv_sections(p_ptr, num_sect, msg_sect);
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001500 res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect,
Per Liden4323add2006-01-18 00:38:21 +01001501 destnode);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001502 if (likely(res != -ELINKCONG))
1503 return res;
1504 if (port_unreliable(p_ptr)) {
1505 /* Just calculate msg length and return */
1506 return msg_calc_data_size(msg_sect, num_sect);
1507 }
1508 return -ELINKCONG;
1509 }
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001510 return tipc_port_reject_sections(p_ptr, msg, msg_sect, num_sect,
Per Liden4323add2006-01-18 00:38:21 +01001511 TIPC_ERR_NO_NAME);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001512}
1513
1514/**
1515 * tipc_send2name - send message sections to port name
1516 */
1517
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001518int tipc_send2name(u32 ref,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001519 struct tipc_name const *name,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001520 unsigned int domain,
1521 unsigned int num_sect,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001522 struct iovec const *msg_sect)
1523{
1524 struct tipc_portid orig;
1525
1526 orig.ref = ref;
1527 orig.node = tipc_own_addr;
1528 return tipc_forward2name(ref, name, domain, num_sect, msg_sect, &orig,
1529 TIPC_PORT_IMPORTANCE);
1530}
1531
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001532/**
Per Lidenb97bf3f2006-01-02 19:04:38 +01001533 * tipc_forward_buf2name - forward message buffer to port name
1534 */
1535
1536int tipc_forward_buf2name(u32 ref,
1537 struct tipc_name const *name,
1538 u32 domain,
1539 struct sk_buff *buf,
1540 unsigned int dsz,
1541 struct tipc_portid const *orig,
1542 unsigned int importance)
1543{
1544 struct port *p_ptr;
1545 struct tipc_msg *msg;
1546 u32 destnode = domain;
1547 u32 destport = 0;
1548 int res;
1549
Per Liden4323add2006-01-18 00:38:21 +01001550 p_ptr = (struct port *)tipc_ref_deref(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001551 if (!p_ptr || p_ptr->publ.connected)
1552 return -EINVAL;
1553
1554 msg = &p_ptr->publ.phdr;
1555 if (importance <= TIPC_CRITICAL_IMPORTANCE)
1556 msg_set_importance(msg, importance);
1557 msg_set_type(msg, TIPC_NAMED_MSG);
1558 msg_set_orignode(msg, orig->node);
1559 msg_set_origport(msg, orig->ref);
1560 msg_set_nametype(msg, name->type);
1561 msg_set_nameinst(msg, name->instance);
1562 msg_set_lookup_scope(msg, addr_scope(domain));
1563 msg_set_hdr_sz(msg, LONG_H_SIZE);
1564 msg_set_size(msg, LONG_H_SIZE + dsz);
Per Liden4323add2006-01-18 00:38:21 +01001565 destport = tipc_nametbl_translate(name->type, name->instance, &destnode);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001566 msg_set_destnode(msg, destnode);
1567 msg_set_destport(msg, destport);
1568 msg_dbg(msg, "forw2name ==> ");
1569 if (skb_cow(buf, LONG_H_SIZE))
1570 return -ENOMEM;
1571 skb_push(buf, LONG_H_SIZE);
Arnaldo Carvalho de Melo27d7ff42007-03-31 11:55:19 -03001572 skb_copy_to_linear_data(buf, msg, LONG_H_SIZE);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001573 msg_dbg(buf_msg(buf),"PREP:");
1574 if (likely(destport || destnode)) {
1575 p_ptr->sent++;
1576 if (destnode == tipc_own_addr)
Per Liden4323add2006-01-18 00:38:21 +01001577 return tipc_port_recv_msg(buf);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001578 res = tipc_send_buf_fast(buf, destnode);
1579 if (likely(res != -ELINKCONG))
1580 return res;
1581 if (port_unreliable(p_ptr))
1582 return dsz;
1583 return -ELINKCONG;
1584 }
1585 return tipc_reject_msg(buf, TIPC_ERR_NO_NAME);
1586}
1587
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001588/**
Per Lidenb97bf3f2006-01-02 19:04:38 +01001589 * tipc_send_buf2name - send message buffer to port name
1590 */
1591
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001592int tipc_send_buf2name(u32 ref,
1593 struct tipc_name const *dest,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001594 u32 domain,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001595 struct sk_buff *buf,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001596 unsigned int dsz)
1597{
1598 struct tipc_portid orig;
1599
1600 orig.ref = ref;
1601 orig.node = tipc_own_addr;
1602 return tipc_forward_buf2name(ref, dest, domain, buf, dsz, &orig,
1603 TIPC_PORT_IMPORTANCE);
1604}
1605
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001606/**
Per Lidenb97bf3f2006-01-02 19:04:38 +01001607 * tipc_forward2port - forward message sections to port identity
1608 */
1609
1610int tipc_forward2port(u32 ref,
1611 struct tipc_portid const *dest,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001612 unsigned int num_sect,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001613 struct iovec const *msg_sect,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001614 struct tipc_portid const *orig,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001615 unsigned int importance)
1616{
1617 struct port *p_ptr;
1618 struct tipc_msg *msg;
1619 int res;
1620
Per Liden4323add2006-01-18 00:38:21 +01001621 p_ptr = tipc_port_deref(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001622 if (!p_ptr || p_ptr->publ.connected)
1623 return -EINVAL;
1624
1625 msg = &p_ptr->publ.phdr;
1626 msg_set_type(msg, TIPC_DIRECT_MSG);
1627 msg_set_orignode(msg, orig->node);
1628 msg_set_origport(msg, orig->ref);
1629 msg_set_destnode(msg, dest->node);
1630 msg_set_destport(msg, dest->ref);
1631 msg_set_hdr_sz(msg, DIR_MSG_H_SIZE);
1632 if (importance <= TIPC_CRITICAL_IMPORTANCE)
1633 msg_set_importance(msg, importance);
1634 p_ptr->sent++;
1635 if (dest->node == tipc_own_addr)
Per Liden4323add2006-01-18 00:38:21 +01001636 return tipc_port_recv_sections(p_ptr, num_sect, msg_sect);
1637 res = tipc_link_send_sections_fast(p_ptr, msg_sect, num_sect, dest->node);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001638 if (likely(res != -ELINKCONG))
1639 return res;
1640 if (port_unreliable(p_ptr)) {
1641 /* Just calculate msg length and return */
1642 return msg_calc_data_size(msg_sect, num_sect);
1643 }
1644 return -ELINKCONG;
1645}
1646
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001647/**
1648 * tipc_send2port - send message sections to port identity
Per Lidenb97bf3f2006-01-02 19:04:38 +01001649 */
1650
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001651int tipc_send2port(u32 ref,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001652 struct tipc_portid const *dest,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001653 unsigned int num_sect,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001654 struct iovec const *msg_sect)
1655{
1656 struct tipc_portid orig;
1657
1658 orig.ref = ref;
1659 orig.node = tipc_own_addr;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001660 return tipc_forward2port(ref, dest, num_sect, msg_sect, &orig,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001661 TIPC_PORT_IMPORTANCE);
1662}
1663
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001664/**
Per Lidenb97bf3f2006-01-02 19:04:38 +01001665 * tipc_forward_buf2port - forward message buffer to port identity
1666 */
1667int tipc_forward_buf2port(u32 ref,
1668 struct tipc_portid const *dest,
1669 struct sk_buff *buf,
1670 unsigned int dsz,
1671 struct tipc_portid const *orig,
1672 unsigned int importance)
1673{
1674 struct port *p_ptr;
1675 struct tipc_msg *msg;
1676 int res;
1677
Per Liden4323add2006-01-18 00:38:21 +01001678 p_ptr = (struct port *)tipc_ref_deref(ref);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001679 if (!p_ptr || p_ptr->publ.connected)
1680 return -EINVAL;
1681
1682 msg = &p_ptr->publ.phdr;
1683 msg_set_type(msg, TIPC_DIRECT_MSG);
1684 msg_set_orignode(msg, orig->node);
1685 msg_set_origport(msg, orig->ref);
1686 msg_set_destnode(msg, dest->node);
1687 msg_set_destport(msg, dest->ref);
1688 msg_set_hdr_sz(msg, DIR_MSG_H_SIZE);
1689 if (importance <= TIPC_CRITICAL_IMPORTANCE)
1690 msg_set_importance(msg, importance);
1691 msg_set_size(msg, DIR_MSG_H_SIZE + dsz);
1692 if (skb_cow(buf, DIR_MSG_H_SIZE))
1693 return -ENOMEM;
1694
1695 skb_push(buf, DIR_MSG_H_SIZE);
Arnaldo Carvalho de Melo27d7ff42007-03-31 11:55:19 -03001696 skb_copy_to_linear_data(buf, msg, DIR_MSG_H_SIZE);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001697 msg_dbg(msg, "buf2port: ");
1698 p_ptr->sent++;
1699 if (dest->node == tipc_own_addr)
Per Liden4323add2006-01-18 00:38:21 +01001700 return tipc_port_recv_msg(buf);
Per Lidenb97bf3f2006-01-02 19:04:38 +01001701 res = tipc_send_buf_fast(buf, dest->node);
1702 if (likely(res != -ELINKCONG))
1703 return res;
1704 if (port_unreliable(p_ptr))
1705 return dsz;
1706 return -ELINKCONG;
1707}
1708
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001709/**
Per Lidenb97bf3f2006-01-02 19:04:38 +01001710 * tipc_send_buf2port - send message buffer to port identity
1711 */
1712
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001713int tipc_send_buf2port(u32 ref,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001714 struct tipc_portid const *dest,
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001715 struct sk_buff *buf,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001716 unsigned int dsz)
1717{
1718 struct tipc_portid orig;
1719
1720 orig.ref = ref;
1721 orig.node = tipc_own_addr;
YOSHIFUJI Hideakic4307282007-02-09 23:25:21 +09001722 return tipc_forward_buf2port(ref, dest, buf, dsz, &orig,
Per Lidenb97bf3f2006-01-02 19:04:38 +01001723 TIPC_PORT_IMPORTANCE);
1724}
1725