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-rw-r--r--net/tipc/server.c700
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diff --git a/net/tipc/server.c b/net/tipc/server.c
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1/*
2 * net/tipc/server.c: TIPC server infrastructure
3 *
4 * Copyright (c) 2012-2013, Wind River Systems
5 * Copyright (c) 2017, Ericsson AB
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
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.
19 *
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
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37#include "subscr.h"
38#include "server.h"
39#include "core.h"
40#include "socket.h"
41#include "addr.h"
42#include "msg.h"
43#include <net/sock.h>
44#include <linux/module.h>
45
46/* Number of messages to send before rescheduling */
47#define MAX_SEND_MSG_COUNT 25
48#define MAX_RECV_MSG_COUNT 25
49#define CF_CONNECTED 1
50#define CF_SERVER 2
51
52#define TIPC_SERVER_NAME_LEN 32
53
54/**
55 * struct tipc_server - TIPC server structure
56 * @conn_idr: identifier set of connection
57 * @idr_lock: protect the connection identifier set
58 * @idr_in_use: amount of allocated identifier entry
59 * @net: network namspace instance
60 * @rcvbuf_cache: memory cache of server receive buffer
61 * @rcv_wq: receive workqueue
62 * @send_wq: send workqueue
63 * @max_rcvbuf_size: maximum permitted receive message length
64 * @tipc_conn_new: callback will be called when new connection is incoming
65 * @tipc_conn_release: callback will be called before releasing the connection
66 * @tipc_conn_recvmsg: callback will be called when message arrives
67 * @name: server name
68 * @imp: message importance
69 * @type: socket type
70 */
71struct tipc_server {
72 struct idr conn_idr;
73 spinlock_t idr_lock; /* for idr list */
74 int idr_in_use;
75 struct net *net;
76 struct work_struct awork;
77 struct workqueue_struct *rcv_wq;
78 struct workqueue_struct *send_wq;
79 int max_rcvbuf_size;
80 struct socket *listener;
81 char name[TIPC_SERVER_NAME_LEN];
82};
83
84/**
85 * struct tipc_conn - TIPC connection structure
86 * @kref: reference counter to connection object
87 * @conid: connection identifier
88 * @sock: socket handler associated with connection
89 * @flags: indicates connection state
90 * @server: pointer to connected server
91 * @sub_list: lsit to all pertaing subscriptions
92 * @sub_lock: lock protecting the subscription list
93 * @outqueue_lock: control access to the outqueue
94 * @rwork: receive work item
95 * @rx_action: what to do when connection socket is active
96 * @outqueue: pointer to first outbound message in queue
97 * @outqueue_lock: control access to the outqueue
98 * @swork: send work item
99 */
100struct tipc_conn {
101 struct kref kref;
102 int conid;
103 struct socket *sock;
104 unsigned long flags;
105 struct tipc_server *server;
106 struct list_head sub_list;
107 spinlock_t sub_lock; /* for subscription list */
108 struct work_struct rwork;
109 struct list_head outqueue;
110 spinlock_t outqueue_lock;
111 struct work_struct swork;
112};
113
114/* An entry waiting to be sent */
115struct outqueue_entry {
116 bool inactive;
117 struct tipc_event evt;
118 struct list_head list;
119};
120
121static void tipc_recv_work(struct work_struct *work);
122static void tipc_send_work(struct work_struct *work);
123
124static bool connected(struct tipc_conn *con)
125{
126 return con && test_bit(CF_CONNECTED, &con->flags);
127}
128
129static void tipc_conn_kref_release(struct kref *kref)
130{
131 struct tipc_conn *con = container_of(kref, struct tipc_conn, kref);
132 struct tipc_server *s = con->server;
133 struct outqueue_entry *e, *safe;
134
135 spin_lock_bh(&s->idr_lock);
136 idr_remove(&s->conn_idr, con->conid);
137 s->idr_in_use--;
138 spin_unlock_bh(&s->idr_lock);
139 if (con->sock)
140 sock_release(con->sock);
141
142 spin_lock_bh(&con->outqueue_lock);
143 list_for_each_entry_safe(e, safe, &con->outqueue, list) {
144 list_del(&e->list);
145 kfree(e);
146 }
147 spin_unlock_bh(&con->outqueue_lock);
148 kfree(con);
149}
150
151static void conn_put(struct tipc_conn *con)
152{
153 kref_put(&con->kref, tipc_conn_kref_release);
154}
155
156static void conn_get(struct tipc_conn *con)
157{
158 kref_get(&con->kref);
159}
160
161static struct tipc_conn *tipc_conn_lookup(struct tipc_server *s, int conid)
162{
163 struct tipc_conn *con;
164
165 spin_lock_bh(&s->idr_lock);
166 con = idr_find(&s->conn_idr, conid);
167 if (!connected(con) || !kref_get_unless_zero(&con->kref))
168 con = NULL;
169 spin_unlock_bh(&s->idr_lock);
170 return con;
171}
172
173/* sock_data_ready - interrupt callback indicating the socket has data to read
174 * The queued work is launched into tipc_recv_work()->tipc_recv_from_sock()
175 */
176static void sock_data_ready(struct sock *sk)
177{
178 struct tipc_conn *con;
179
180 read_lock_bh(&sk->sk_callback_lock);
181 con = sk->sk_user_data;
182 if (connected(con)) {
183 conn_get(con);
184 if (!queue_work(con->server->rcv_wq, &con->rwork))
185 conn_put(con);
186 }
187 read_unlock_bh(&sk->sk_callback_lock);
188}
189
190/* sock_write_space - interrupt callback after a sendmsg EAGAIN
191 * Indicates that there now is more space in the send buffer
192 * The queued work is launched into tipc_send_work()->tipc_send_to_sock()
193 */
194static void sock_write_space(struct sock *sk)
195{
196 struct tipc_conn *con;
197
198 read_lock_bh(&sk->sk_callback_lock);
199 con = sk->sk_user_data;
200 if (connected(con)) {
201 conn_get(con);
202 if (!queue_work(con->server->send_wq, &con->swork))
203 conn_put(con);
204 }
205 read_unlock_bh(&sk->sk_callback_lock);
206}
207
208/* tipc_con_delete_sub - delete a specific or all subscriptions
209 * for a given subscriber
210 */
211static void tipc_con_delete_sub(struct tipc_conn *con, struct tipc_subscr *s)
212{
213 struct list_head *sub_list = &con->sub_list;
214 struct tipc_net *tn = tipc_net(con->server->net);
215 struct tipc_subscription *sub, *tmp;
216
217 spin_lock_bh(&con->sub_lock);
218 list_for_each_entry_safe(sub, tmp, sub_list, sub_list) {
219 if (!s || !memcmp(s, &sub->evt.s, sizeof(*s))) {
220 tipc_sub_unsubscribe(sub);
221 atomic_dec(&tn->subscription_count);
222 } else if (s) {
223 break;
224 }
225 }
226 spin_unlock_bh(&con->sub_lock);
227}
228
229static void tipc_close_conn(struct tipc_conn *con)
230{
231 struct sock *sk = con->sock->sk;
232 bool disconnect = false;
233
234 write_lock_bh(&sk->sk_callback_lock);
235 disconnect = test_and_clear_bit(CF_CONNECTED, &con->flags);
236
237 if (disconnect) {
238 sk->sk_user_data = NULL;
239 tipc_con_delete_sub(con, NULL);
240 }
241 write_unlock_bh(&sk->sk_callback_lock);
242
243 /* Handle concurrent calls from sending and receiving threads */
244 if (!disconnect)
245 return;
246
247 /* Don't flush pending works, -just let them expire */
248 kernel_sock_shutdown(con->sock, SHUT_RDWR);
249
250 conn_put(con);
251}
252
253static struct tipc_conn *tipc_alloc_conn(struct tipc_server *s)
254{
255 struct tipc_conn *con;
256 int ret;
257
258 con = kzalloc(sizeof(struct tipc_conn), GFP_ATOMIC);
259 if (!con)
260 return ERR_PTR(-ENOMEM);
261
262 kref_init(&con->kref);
263 INIT_LIST_HEAD(&con->outqueue);
264 INIT_LIST_HEAD(&con->sub_list);
265 spin_lock_init(&con->outqueue_lock);
266 spin_lock_init(&con->sub_lock);
267 INIT_WORK(&con->swork, tipc_send_work);
268 INIT_WORK(&con->rwork, tipc_recv_work);
269
270 spin_lock_bh(&s->idr_lock);
271 ret = idr_alloc(&s->conn_idr, con, 0, 0, GFP_ATOMIC);
272 if (ret < 0) {
273 kfree(con);
274 spin_unlock_bh(&s->idr_lock);
275 return ERR_PTR(-ENOMEM);
276 }
277 con->conid = ret;
278 s->idr_in_use++;
279 spin_unlock_bh(&s->idr_lock);
280
281 set_bit(CF_CONNECTED, &con->flags);
282 con->server = s;
283
284 return con;
285}
286
287static int tipc_con_rcv_sub(struct tipc_server *srv,
288 struct tipc_conn *con,
289 struct tipc_subscr *s)
290{
291 struct tipc_net *tn = tipc_net(srv->net);
292 struct tipc_subscription *sub;
293
294 if (tipc_sub_read(s, filter) & TIPC_SUB_CANCEL) {
295 tipc_con_delete_sub(con, s);
296 return 0;
297 }
298 if (atomic_read(&tn->subscription_count) >= TIPC_MAX_SUBSCR) {
299 pr_warn("Subscription rejected, max (%u)\n", TIPC_MAX_SUBSCR);
300 return -1;
301 }
302 sub = tipc_sub_subscribe(srv->net, s, con->conid);
303 if (!sub)
304 return -1;
305 atomic_inc(&tn->subscription_count);
306 spin_lock_bh(&con->sub_lock);
307 list_add(&sub->sub_list, &con->sub_list);
308 spin_unlock_bh(&con->sub_lock);
309 return 0;
310}
311
312static int tipc_receive_from_sock(struct tipc_conn *con)
313{
314 struct tipc_server *srv = con->server;
315 struct sock *sk = con->sock->sk;
316 struct msghdr msg = {};
317 struct tipc_subscr s;
318 struct kvec iov;
319 int ret;
320
321 iov.iov_base = &s;
322 iov.iov_len = sizeof(s);
323 msg.msg_name = NULL;
324 iov_iter_kvec(&msg.msg_iter, READ | ITER_KVEC, &iov, 1, iov.iov_len);
325 ret = sock_recvmsg(con->sock, &msg, MSG_DONTWAIT);
326 if (ret == -EWOULDBLOCK)
327 return -EWOULDBLOCK;
328 if (ret > 0) {
329 read_lock_bh(&sk->sk_callback_lock);
330 ret = tipc_con_rcv_sub(srv, con, &s);
331 read_unlock_bh(&sk->sk_callback_lock);
332 }
333 if (ret < 0)
334 tipc_close_conn(con);
335
336 return ret;
337}
338
339/* tipc_conn_queue_evt() - interrupt level call from a subscription instance
340 * The queued work is launched into tipc_send_work()->tipc_send_to_sock()
341 */
342void tipc_conn_queue_evt(struct net *net, int conid,
343 u32 event, struct tipc_event *evt)
344{
345 struct tipc_server *srv = tipc_topsrv(net);
346 struct outqueue_entry *e;
347 struct tipc_conn *con;
348
349 con = tipc_conn_lookup(srv, conid);
350 if (!con)
351 return;
352
353 if (!connected(con))
354 goto err;
355
356 e = kmalloc(sizeof(*e), GFP_ATOMIC);
357 if (!e)
358 goto err;
359 e->inactive = (event == TIPC_SUBSCR_TIMEOUT);
360 memcpy(&e->evt, evt, sizeof(*evt));
361 spin_lock_bh(&con->outqueue_lock);
362 list_add_tail(&e->list, &con->outqueue);
363 spin_unlock_bh(&con->outqueue_lock);
364
365 if (queue_work(srv->send_wq, &con->swork))
366 return;
367err:
368 conn_put(con);
369}
370
371bool tipc_topsrv_kern_subscr(struct net *net, u32 port, u32 type, u32 lower,
372 u32 upper, u32 filter, int *conid)
373{
374 struct tipc_subscr sub;
375 struct tipc_conn *con;
376 int rc;
377
378 sub.seq.type = type;
379 sub.seq.lower = lower;
380 sub.seq.upper = upper;
381 sub.timeout = TIPC_WAIT_FOREVER;
382 sub.filter = filter;
383 *(u32 *)&sub.usr_handle = port;
384
385 con = tipc_alloc_conn(tipc_topsrv(net));
386 if (IS_ERR(con))
387 return false;
388
389 *conid = con->conid;
390 con->sock = NULL;
391 rc = tipc_con_rcv_sub(tipc_topsrv(net), con, &sub);
392 if (rc < 0)
393 tipc_close_conn(con);
394 return !rc;
395}
396
397void tipc_topsrv_kern_unsubscr(struct net *net, int conid)
398{
399 struct tipc_conn *con;
400
401 con = tipc_conn_lookup(tipc_topsrv(net), conid);
402 if (!con)
403 return;
404
405 test_and_clear_bit(CF_CONNECTED, &con->flags);
406 tipc_con_delete_sub(con, NULL);
407 conn_put(con);
408 conn_put(con);
409}
410
411static void tipc_send_kern_top_evt(struct net *net, struct tipc_event *evt)
412{
413 u32 port = *(u32 *)&evt->s.usr_handle;
414 u32 self = tipc_own_addr(net);
415 struct sk_buff_head evtq;
416 struct sk_buff *skb;
417
418 skb = tipc_msg_create(TOP_SRV, 0, INT_H_SIZE, sizeof(*evt),
419 self, self, port, port, 0);
420 if (!skb)
421 return;
422 msg_set_dest_droppable(buf_msg(skb), true);
423 memcpy(msg_data(buf_msg(skb)), evt, sizeof(*evt));
424 skb_queue_head_init(&evtq);
425 __skb_queue_tail(&evtq, skb);
426 tipc_sk_rcv(net, &evtq);
427}
428
429static void tipc_send_to_sock(struct tipc_conn *con)
430{
431 struct list_head *queue = &con->outqueue;
432 struct tipc_server *srv = con->server;
433 struct outqueue_entry *e;
434 struct tipc_event *evt;
435 struct msghdr msg;
436 struct kvec iov;
437 int count = 0;
438 int ret;
439
440 spin_lock_bh(&con->outqueue_lock);
441
442 while (!list_empty(queue)) {
443 e = list_first_entry(queue, struct outqueue_entry, list);
444 evt = &e->evt;
445 spin_unlock_bh(&con->outqueue_lock);
446
447 if (e->inactive)
448 tipc_con_delete_sub(con, &evt->s);
449
450 memset(&msg, 0, sizeof(msg));
451 msg.msg_flags = MSG_DONTWAIT;
452 iov.iov_base = evt;
453 iov.iov_len = sizeof(*evt);
454 msg.msg_name = NULL;
455
456 if (con->sock) {
457 ret = kernel_sendmsg(con->sock, &msg, &iov,
458 1, sizeof(*evt));
459 if (ret == -EWOULDBLOCK || ret == 0) {
460 cond_resched();
461 return;
462 } else if (ret < 0) {
463 return tipc_close_conn(con);
464 }
465 } else {
466 tipc_send_kern_top_evt(srv->net, evt);
467 }
468
469 /* Don't starve users filling buffers */
470 if (++count >= MAX_SEND_MSG_COUNT) {
471 cond_resched();
472 count = 0;
473 }
474 spin_lock_bh(&con->outqueue_lock);
475 list_del(&e->list);
476 kfree(e);
477 }
478 spin_unlock_bh(&con->outqueue_lock);
479}
480
481static void tipc_recv_work(struct work_struct *work)
482{
483 struct tipc_conn *con = container_of(work, struct tipc_conn, rwork);
484 int count = 0;
485
486 while (connected(con)) {
487 if (tipc_receive_from_sock(con))
488 break;
489
490 /* Don't flood Rx machine */
491 if (++count >= MAX_RECV_MSG_COUNT) {
492 cond_resched();
493 count = 0;
494 }
495 }
496 conn_put(con);
497}
498
499static void tipc_send_work(struct work_struct *work)
500{
501 struct tipc_conn *con = container_of(work, struct tipc_conn, swork);
502
503 if (connected(con))
504 tipc_send_to_sock(con);
505
506 conn_put(con);
507}
508
509static void tipc_accept_from_sock(struct work_struct *work)
510{
511 struct tipc_server *srv = container_of(work, struct tipc_server, awork);
512 struct socket *lsock = srv->listener;
513 struct socket *newsock;
514 struct tipc_conn *con;
515 struct sock *newsk;
516 int ret;
517
518 while (1) {
519 ret = kernel_accept(lsock, &newsock, O_NONBLOCK);
520 if (ret < 0)
521 return;
522 con = tipc_alloc_conn(srv);
523 if (IS_ERR(con)) {
524 ret = PTR_ERR(con);
525 sock_release(newsock);
526 return;
527 }
528 /* Register callbacks */
529 newsk = newsock->sk;
530 write_lock_bh(&newsk->sk_callback_lock);
531 newsk->sk_data_ready = sock_data_ready;
532 newsk->sk_write_space = sock_write_space;
533 newsk->sk_user_data = con;
534 con->sock = newsock;
535 write_unlock_bh(&newsk->sk_callback_lock);
536
537 /* Wake up receive process in case of 'SYN+' message */
538 newsk->sk_data_ready(newsk);
539 }
540}
541
542/* listener_sock_data_ready - interrupt callback indicating new connection
543 * The queued job is launched into tipc_accept_from_sock()
544 */
545static void listener_sock_data_ready(struct sock *sk)
546{
547 struct tipc_server *srv;
548
549 read_lock_bh(&sk->sk_callback_lock);
550 srv = sk->sk_user_data;
551 if (srv->listener)
552 queue_work(srv->rcv_wq, &srv->awork);
553 read_unlock_bh(&sk->sk_callback_lock);
554}
555
556static int tipc_create_listener_sock(struct tipc_server *srv)
557{
558 int imp = TIPC_CRITICAL_IMPORTANCE;
559 struct socket *lsock = NULL;
560 struct sockaddr_tipc saddr;
561 struct sock *sk;
562 int rc;
563
564 rc = sock_create_kern(srv->net, AF_TIPC, SOCK_SEQPACKET, 0, &lsock);
565 if (rc < 0)
566 return rc;
567
568 srv->listener = lsock;
569 sk = lsock->sk;
570 write_lock_bh(&sk->sk_callback_lock);
571 sk->sk_data_ready = listener_sock_data_ready;
572 sk->sk_user_data = srv;
573 write_unlock_bh(&sk->sk_callback_lock);
574
575 rc = kernel_setsockopt(lsock, SOL_TIPC, TIPC_IMPORTANCE,
576 (char *)&imp, sizeof(imp));
577 if (rc < 0)
578 goto err;
579
580 saddr.family = AF_TIPC;
581 saddr.addrtype = TIPC_ADDR_NAMESEQ;
582 saddr.addr.nameseq.type = TIPC_TOP_SRV;
583 saddr.addr.nameseq.lower = TIPC_TOP_SRV;
584 saddr.addr.nameseq.upper = TIPC_TOP_SRV;
585 saddr.scope = TIPC_NODE_SCOPE;
586
587 rc = kernel_bind(lsock, (struct sockaddr *)&saddr, sizeof(saddr));
588 if (rc < 0)
589 goto err;
590 rc = kernel_listen(lsock, 0);
591 if (rc < 0)
592 goto err;
593
594 /* As server's listening socket owner and creator is the same module,
595 * we have to decrease TIPC module reference count to guarantee that
596 * it remains zero after the server socket is created, otherwise,
597 * executing "rmmod" command is unable to make TIPC module deleted
598 * after TIPC module is inserted successfully.
599 *
600 * However, the reference count is ever increased twice in
601 * sock_create_kern(): one is to increase the reference count of owner
602 * of TIPC socket's proto_ops struct; another is to increment the
603 * reference count of owner of TIPC proto struct. Therefore, we must
604 * decrement the module reference count twice to ensure that it keeps
605 * zero after server's listening socket is created. Of course, we
606 * must bump the module reference count twice as well before the socket
607 * is closed.
608 */
609 module_put(lsock->ops->owner);
610 module_put(sk->sk_prot_creator->owner);
611
612 return 0;
613err:
614 sock_release(lsock);
615 return -EINVAL;
616}
617
618static int tipc_work_start(struct tipc_server *s)
619{
620 s->rcv_wq = alloc_ordered_workqueue("tipc_rcv", 0);
621 if (!s->rcv_wq) {
622 pr_err("can't start tipc receive workqueue\n");
623 return -ENOMEM;
624 }
625
626 s->send_wq = alloc_ordered_workqueue("tipc_send", 0);
627 if (!s->send_wq) {
628 pr_err("can't start tipc send workqueue\n");
629 destroy_workqueue(s->rcv_wq);
630 return -ENOMEM;
631 }
632
633 return 0;
634}
635
636static void tipc_work_stop(struct tipc_server *s)
637{
638 destroy_workqueue(s->rcv_wq);
639 destroy_workqueue(s->send_wq);
640}
641
642int tipc_topsrv_start(struct net *net)
643{
644 struct tipc_net *tn = tipc_net(net);
645 const char name[] = "topology_server";
646 struct tipc_server *srv;
647 int ret;
648
649 srv = kzalloc(sizeof(*srv), GFP_ATOMIC);
650 if (!srv)
651 return -ENOMEM;
652
653 srv->net = net;
654 srv->max_rcvbuf_size = sizeof(struct tipc_subscr);
655 INIT_WORK(&srv->awork, tipc_accept_from_sock);
656
657 strncpy(srv->name, name, strlen(name) + 1);
658 tn->topsrv = srv;
659 atomic_set(&tn->subscription_count, 0);
660
661 spin_lock_init(&srv->idr_lock);
662 idr_init(&srv->conn_idr);
663 srv->idr_in_use = 0;
664
665 ret = tipc_work_start(srv);
666 if (ret < 0)
667 return ret;
668
669 ret = tipc_create_listener_sock(srv);
670 if (ret < 0)
671 tipc_work_stop(srv);
672
673 return ret;
674}
675
676void tipc_topsrv_stop(struct net *net)
677{
678 struct tipc_server *srv = tipc_topsrv(net);
679 struct socket *lsock = srv->listener;
680 struct tipc_conn *con;
681 int id;
682
683 spin_lock_bh(&srv->idr_lock);
684 for (id = 0; srv->idr_in_use; id++) {
685 con = idr_find(&srv->conn_idr, id);
686 if (con) {
687 spin_unlock_bh(&srv->idr_lock);
688 tipc_close_conn(con);
689 spin_lock_bh(&srv->idr_lock);
690 }
691 }
692 __module_get(lsock->ops->owner);
693 __module_get(lsock->sk->sk_prot_creator->owner);
694 sock_release(lsock);
695 srv->listener = NULL;
696 spin_unlock_bh(&srv->idr_lock);
697 tipc_work_stop(srv);
698 idr_destroy(&srv->conn_idr);
699 kfree(srv);
700}
generated by cgit v1.2.2 (git 2.25.0) at 2025-10-02 09:01:11 -0400