2 RFCOMM implementation for Linux Bluetooth stack (BlueZ).
3 Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>
4 Copyright (C) 2002 Marcel Holtmann <marcel@holtmann.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License version 2 as
8 published by the Free Software Foundation;
10 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
11 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
12 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
13 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
14 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
15 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
20 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
21 SOFTWARE IS DISCLAIMED.
27 * $Id: sock.c,v 1.24 2002/10/03 01:00:34 maxk Exp $
30 #include <linux/config.h>
31 #include <linux/module.h>
33 #include <linux/types.h>
34 #include <linux/errno.h>
35 #include <linux/kernel.h>
36 #include <linux/sched.h>
37 #include <linux/slab.h>
38 #include <linux/poll.h>
39 #include <linux/fcntl.h>
40 #include <linux/init.h>
41 #include <linux/interrupt.h>
42 #include <linux/socket.h>
43 #include <linux/skbuff.h>
44 #include <linux/list.h>
45 #include <linux/proc_fs.h>
46 #include <linux/seq_file.h>
49 #include <asm/system.h>
50 #include <asm/uaccess.h>
52 #include <net/bluetooth/bluetooth.h>
53 #include <net/bluetooth/hci_core.h>
54 #include <net/bluetooth/l2cap.h>
55 #include <net/bluetooth/rfcomm.h>
57 #ifndef CONFIG_BT_RFCOMM_DEBUG
62 static struct proto_ops rfcomm_sock_ops;
64 static struct bt_sock_list rfcomm_sk_list = {
65 .lock = RW_LOCK_UNLOCKED
68 static void rfcomm_sock_close(struct sock *sk);
69 static void rfcomm_sock_kill(struct sock *sk);
71 /* ---- DLC callbacks ----
73 * called under rfcomm_dlc_lock()
75 static void rfcomm_sk_data_ready(struct rfcomm_dlc *d, struct sk_buff *skb)
77 struct sock *sk = d->owner;
81 atomic_add(skb->len, &sk->sk_rmem_alloc);
82 skb_queue_tail(&sk->sk_receive_queue, skb);
83 sk->sk_data_ready(sk, skb->len);
85 if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf)
86 rfcomm_dlc_throttle(d);
89 static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err)
91 struct sock *sk = d->owner, *parent;
95 BT_DBG("dlc %p state %ld err %d", d, d->state, err);
102 sk->sk_state = d->state;
104 parent = bt_sk(sk)->parent;
106 if (d->state == BT_CLOSED) {
107 sock_set_flag(sk, SOCK_ZAPPED);
108 bt_accept_unlink(sk);
110 parent->sk_data_ready(parent, 0);
112 if (d->state == BT_CONNECTED)
113 rfcomm_session_getaddr(d->session, &bt_sk(sk)->src, NULL);
114 sk->sk_state_change(sk);
119 if (parent && sock_flag(sk, SOCK_ZAPPED)) {
120 /* We have to drop DLC lock here, otherwise
121 * rfcomm_sock_destruct() will dead lock. */
122 rfcomm_dlc_unlock(d);
123 rfcomm_sock_kill(sk);
128 /* ---- Socket functions ---- */
129 static struct sock *__rfcomm_get_sock_by_addr(u8 channel, bdaddr_t *src)
131 struct sock *sk = NULL;
132 struct hlist_node *node;
134 sk_for_each(sk, node, &rfcomm_sk_list.head) {
135 if (rfcomm_pi(sk)->channel == channel &&
136 !bacmp(&bt_sk(sk)->src, src))
140 return node ? sk : NULL;
143 /* Find socket with channel and source bdaddr.
144 * Returns closest match.
146 static struct sock *__rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src)
148 struct sock *sk = NULL, *sk1 = NULL;
149 struct hlist_node *node;
151 sk_for_each(sk, node, &rfcomm_sk_list.head) {
152 if (state && sk->sk_state != state)
155 if (rfcomm_pi(sk)->channel == channel) {
157 if (!bacmp(&bt_sk(sk)->src, src))
161 if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY))
165 return node ? sk : sk1;
168 /* Find socket with given address (channel, src).
169 * Returns locked socket */
170 static inline struct sock *rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src)
173 read_lock(&rfcomm_sk_list.lock);
174 s = __rfcomm_get_sock_by_channel(state, channel, src);
175 if (s) bh_lock_sock(s);
176 read_unlock(&rfcomm_sk_list.lock);
180 static void rfcomm_sock_destruct(struct sock *sk)
182 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
184 BT_DBG("sk %p dlc %p", sk, d);
186 skb_queue_purge(&sk->sk_receive_queue);
187 skb_queue_purge(&sk->sk_write_queue);
190 rfcomm_pi(sk)->dlc = NULL;
192 /* Detach DLC if it's owned by this socket */
195 rfcomm_dlc_unlock(d);
200 static void rfcomm_sock_cleanup_listen(struct sock *parent)
204 BT_DBG("parent %p", parent);
206 /* Close not yet accepted dlcs */
207 while ((sk = bt_accept_dequeue(parent, NULL))) {
208 rfcomm_sock_close(sk);
209 rfcomm_sock_kill(sk);
212 parent->sk_state = BT_CLOSED;
213 sock_set_flag(parent, SOCK_ZAPPED);
216 /* Kill socket (only if zapped and orphan)
217 * Must be called on unlocked socket.
219 static void rfcomm_sock_kill(struct sock *sk)
221 if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
224 BT_DBG("sk %p state %d refcnt %d", sk, sk->sk_state, atomic_read(&sk->sk_refcnt));
226 /* Kill poor orphan */
227 bt_sock_unlink(&rfcomm_sk_list, sk);
228 sock_set_flag(sk, SOCK_DEAD);
232 static void __rfcomm_sock_close(struct sock *sk)
234 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
236 BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
238 switch (sk->sk_state) {
240 rfcomm_sock_cleanup_listen(sk);
247 rfcomm_dlc_close(d, 0);
250 sock_set_flag(sk, SOCK_ZAPPED);
256 * Must be called on unlocked socket.
258 static void rfcomm_sock_close(struct sock *sk)
261 __rfcomm_sock_close(sk);
265 static void rfcomm_sock_init(struct sock *sk, struct sock *parent)
267 struct rfcomm_pinfo *pi = rfcomm_pi(sk);
272 sk->sk_type = parent->sk_type;
273 pi->link_mode = rfcomm_pi(parent)->link_mode;
278 pi->dlc->link_mode = pi->link_mode;
281 static struct proto rfcomm_proto = {
283 .owner = THIS_MODULE,
284 .obj_size = sizeof(struct rfcomm_pinfo)
287 static struct sock *rfcomm_sock_alloc(struct socket *sock, int proto, unsigned int __nocast prio)
289 struct rfcomm_dlc *d;
292 sk = sk_alloc(PF_BLUETOOTH, prio, &rfcomm_proto, 1);
296 sock_init_data(sock, sk);
297 INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
299 d = rfcomm_dlc_alloc(prio);
305 d->data_ready = rfcomm_sk_data_ready;
306 d->state_change = rfcomm_sk_state_change;
308 rfcomm_pi(sk)->dlc = d;
311 sk->sk_destruct = rfcomm_sock_destruct;
312 sk->sk_sndtimeo = RFCOMM_CONN_TIMEOUT;
314 sk->sk_sndbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10;
315 sk->sk_rcvbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10;
317 sock_reset_flag(sk, SOCK_ZAPPED);
319 sk->sk_protocol = proto;
320 sk->sk_state = BT_OPEN;
322 bt_sock_link(&rfcomm_sk_list, sk);
328 static int rfcomm_sock_create(struct socket *sock, int protocol)
332 BT_DBG("sock %p", sock);
334 sock->state = SS_UNCONNECTED;
336 if (sock->type != SOCK_STREAM && sock->type != SOCK_RAW)
337 return -ESOCKTNOSUPPORT;
339 sock->ops = &rfcomm_sock_ops;
341 if (!(sk = rfcomm_sock_alloc(sock, protocol, GFP_KERNEL)))
344 rfcomm_sock_init(sk, NULL);
348 static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
350 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
351 struct sock *sk = sock->sk;
354 BT_DBG("sk %p %s", sk, batostr(&sa->rc_bdaddr));
356 if (!addr || addr->sa_family != AF_BLUETOOTH)
361 if (sk->sk_state != BT_OPEN) {
366 if (sk->sk_type != SOCK_STREAM) {
371 write_lock_bh(&rfcomm_sk_list.lock);
373 if (sa->rc_channel && __rfcomm_get_sock_by_addr(sa->rc_channel, &sa->rc_bdaddr)) {
376 /* Save source address */
377 bacpy(&bt_sk(sk)->src, &sa->rc_bdaddr);
378 rfcomm_pi(sk)->channel = sa->rc_channel;
379 sk->sk_state = BT_BOUND;
382 write_unlock_bh(&rfcomm_sk_list.lock);
389 static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
391 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
392 struct sock *sk = sock->sk;
393 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
398 if (addr->sa_family != AF_BLUETOOTH || alen < sizeof(struct sockaddr_rc))
403 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) {
408 if (sk->sk_type != SOCK_STREAM) {
413 sk->sk_state = BT_CONNECT;
414 bacpy(&bt_sk(sk)->dst, &sa->rc_bdaddr);
415 rfcomm_pi(sk)->channel = sa->rc_channel;
417 err = rfcomm_dlc_open(d, &bt_sk(sk)->src, &sa->rc_bdaddr, sa->rc_channel);
419 err = bt_sock_wait_state(sk, BT_CONNECTED,
420 sock_sndtimeo(sk, flags & O_NONBLOCK));
427 static int rfcomm_sock_listen(struct socket *sock, int backlog)
429 struct sock *sk = sock->sk;
432 BT_DBG("sk %p backlog %d", sk, backlog);
436 if (sk->sk_state != BT_BOUND) {
441 if (sk->sk_type != SOCK_STREAM) {
446 if (!rfcomm_pi(sk)->channel) {
447 bdaddr_t *src = &bt_sk(sk)->src;
452 write_lock_bh(&rfcomm_sk_list.lock);
454 for (channel = 1; channel < 31; channel++)
455 if (!__rfcomm_get_sock_by_addr(channel, src)) {
456 rfcomm_pi(sk)->channel = channel;
461 write_unlock_bh(&rfcomm_sk_list.lock);
467 sk->sk_max_ack_backlog = backlog;
468 sk->sk_ack_backlog = 0;
469 sk->sk_state = BT_LISTEN;
476 static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int flags)
478 DECLARE_WAITQUEUE(wait, current);
479 struct sock *sk = sock->sk, *nsk;
485 if (sk->sk_state != BT_LISTEN) {
490 if (sk->sk_type != SOCK_STREAM) {
495 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
497 BT_DBG("sk %p timeo %ld", sk, timeo);
499 /* Wait for an incoming connection. (wake-one). */
500 add_wait_queue_exclusive(sk->sk_sleep, &wait);
501 while (!(nsk = bt_accept_dequeue(sk, newsock))) {
502 set_current_state(TASK_INTERRUPTIBLE);
509 timeo = schedule_timeout(timeo);
512 if (sk->sk_state != BT_LISTEN) {
517 if (signal_pending(current)) {
518 err = sock_intr_errno(timeo);
522 set_current_state(TASK_RUNNING);
523 remove_wait_queue(sk->sk_sleep, &wait);
528 newsock->state = SS_CONNECTED;
530 BT_DBG("new socket %p", nsk);
537 static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
539 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
540 struct sock *sk = sock->sk;
542 BT_DBG("sock %p, sk %p", sock, sk);
544 sa->rc_family = AF_BLUETOOTH;
545 sa->rc_channel = rfcomm_pi(sk)->channel;
547 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->dst);
549 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->src);
551 *len = sizeof(struct sockaddr_rc);
555 static int rfcomm_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
556 struct msghdr *msg, size_t len)
558 struct sock *sk = sock->sk;
559 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
564 if (msg->msg_flags & MSG_OOB)
567 if (sk->sk_shutdown & SEND_SHUTDOWN)
570 BT_DBG("sock %p, sk %p", sock, sk);
575 size_t size = min_t(size_t, len, d->mtu);
577 skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE,
578 msg->msg_flags & MSG_DONTWAIT, &err);
581 skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE);
583 err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
590 err = rfcomm_dlc_send(d, skb);
602 return sent ? sent : err;
605 static long rfcomm_sock_data_wait(struct sock *sk, long timeo)
607 DECLARE_WAITQUEUE(wait, current);
609 add_wait_queue(sk->sk_sleep, &wait);
611 set_current_state(TASK_INTERRUPTIBLE);
613 if (!skb_queue_empty(&sk->sk_receive_queue) ||
615 (sk->sk_shutdown & RCV_SHUTDOWN) ||
616 signal_pending(current) ||
620 set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
622 timeo = schedule_timeout(timeo);
624 clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
627 __set_current_state(TASK_RUNNING);
628 remove_wait_queue(sk->sk_sleep, &wait);
632 static int rfcomm_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
633 struct msghdr *msg, size_t size, int flags)
635 struct sock *sk = sock->sk;
637 size_t target, copied = 0;
643 msg->msg_namelen = 0;
645 BT_DBG("sk %p size %d", sk, size);
649 target = sock_rcvlowat(sk, flags & MSG_WAITALL, size);
650 timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);
656 skb = skb_dequeue(&sk->sk_receive_queue);
658 if (copied >= target)
661 if ((err = sock_error(sk)) != 0)
663 if (sk->sk_shutdown & RCV_SHUTDOWN)
670 timeo = rfcomm_sock_data_wait(sk, timeo);
672 if (signal_pending(current)) {
673 err = sock_intr_errno(timeo);
679 chunk = min_t(unsigned int, skb->len, size);
680 if (memcpy_toiovec(msg->msg_iov, skb->data, chunk)) {
681 skb_queue_head(&sk->sk_receive_queue, skb);
689 if (!(flags & MSG_PEEK)) {
690 atomic_sub(chunk, &sk->sk_rmem_alloc);
692 skb_pull(skb, chunk);
694 skb_queue_head(&sk->sk_receive_queue, skb);
700 /* put message back and return */
701 skb_queue_head(&sk->sk_receive_queue, skb);
707 if (atomic_read(&sk->sk_rmem_alloc) <= (sk->sk_rcvbuf >> 2))
708 rfcomm_dlc_unthrottle(rfcomm_pi(sk)->dlc);
711 return copied ? : err;
714 static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen)
716 struct sock *sk = sock->sk;
726 if (get_user(opt, (u32 __user *) optval)) {
731 rfcomm_pi(sk)->link_mode = opt;
743 static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
745 struct sock *sk = sock->sk;
746 struct sock *l2cap_sk;
747 struct rfcomm_conninfo cinfo;
752 if (get_user(len, optlen))
759 if (put_user(rfcomm_pi(sk)->link_mode, (u32 __user *) optval))
763 case RFCOMM_CONNINFO:
764 if (sk->sk_state != BT_CONNECTED) {
769 l2cap_sk = rfcomm_pi(sk)->dlc->session->sock->sk;
771 cinfo.hci_handle = l2cap_pi(l2cap_sk)->conn->hcon->handle;
772 memcpy(cinfo.dev_class, l2cap_pi(l2cap_sk)->conn->hcon->dev_class, 3);
774 len = min_t(unsigned int, len, sizeof(cinfo));
775 if (copy_to_user(optval, (char *) &cinfo, len))
789 static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
791 struct sock *sk = sock->sk;
796 #ifdef CONFIG_BT_RFCOMM_TTY
797 err = rfcomm_dev_ioctl(sk, cmd, (void __user *)arg);
806 static int rfcomm_sock_shutdown(struct socket *sock, int how)
808 struct sock *sk = sock->sk;
811 BT_DBG("sock %p, sk %p", sock, sk);
816 if (!sk->sk_shutdown) {
817 sk->sk_shutdown = SHUTDOWN_MASK;
818 __rfcomm_sock_close(sk);
820 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
821 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
827 static int rfcomm_sock_release(struct socket *sock)
829 struct sock *sk = sock->sk;
832 BT_DBG("sock %p, sk %p", sock, sk);
837 err = rfcomm_sock_shutdown(sock, 2);
840 rfcomm_sock_kill(sk);
844 /* ---- RFCOMM core layer callbacks ----
846 * called under rfcomm_lock()
848 int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d)
850 struct sock *sk, *parent;
854 BT_DBG("session %p channel %d", s, channel);
856 rfcomm_session_getaddr(s, &src, &dst);
858 /* Check if we have socket listening on channel */
859 parent = rfcomm_get_sock_by_channel(BT_LISTEN, channel, &src);
863 /* Check for backlog size */
864 if (sk_acceptq_is_full(parent)) {
865 BT_DBG("backlog full %d", parent->sk_ack_backlog);
869 sk = rfcomm_sock_alloc(NULL, BTPROTO_RFCOMM, GFP_ATOMIC);
873 rfcomm_sock_init(sk, parent);
874 bacpy(&bt_sk(sk)->src, &src);
875 bacpy(&bt_sk(sk)->dst, &dst);
876 rfcomm_pi(sk)->channel = channel;
878 sk->sk_state = BT_CONFIG;
879 bt_accept_enqueue(parent, sk);
881 /* Accept connection and return socket DLC */
882 *d = rfcomm_pi(sk)->dlc;
886 bh_unlock_sock(parent);
890 /* ---- Proc fs support ---- */
891 #ifdef CONFIG_PROC_FS
892 static void *rfcomm_seq_start(struct seq_file *seq, loff_t *pos)
895 struct hlist_node *node;
898 read_lock_bh(&rfcomm_sk_list.lock);
900 sk_for_each(sk, node, &rfcomm_sk_list.head)
906 static void *rfcomm_seq_next(struct seq_file *seq, void *e, loff_t *pos)
913 static void rfcomm_seq_stop(struct seq_file *seq, void *e)
915 read_unlock_bh(&rfcomm_sk_list.lock);
918 static int rfcomm_seq_show(struct seq_file *seq, void *e)
921 seq_printf(seq, "%s %s %d %d\n",
922 batostr(&bt_sk(sk)->src), batostr(&bt_sk(sk)->dst),
923 sk->sk_state, rfcomm_pi(sk)->channel);
927 static struct seq_operations rfcomm_seq_ops = {
928 .start = rfcomm_seq_start,
929 .next = rfcomm_seq_next,
930 .stop = rfcomm_seq_stop,
931 .show = rfcomm_seq_show
934 static int rfcomm_seq_open(struct inode *inode, struct file *file)
936 return seq_open(file, &rfcomm_seq_ops);
939 static struct file_operations rfcomm_seq_fops = {
940 .owner = THIS_MODULE,
941 .open = rfcomm_seq_open,
944 .release = seq_release,
947 static int __init rfcomm_sock_proc_init(void)
949 struct proc_dir_entry *p = create_proc_entry("sock", S_IRUGO, proc_bt_rfcomm);
952 p->proc_fops = &rfcomm_seq_fops;
956 static void __exit rfcomm_sock_proc_cleanup(void)
958 remove_proc_entry("sock", proc_bt_rfcomm);
961 #else /* CONFIG_PROC_FS */
963 static int __init rfcomm_sock_proc_init(void)
968 static void __exit rfcomm_sock_proc_cleanup(void)
972 #endif /* CONFIG_PROC_FS */
974 static struct proto_ops rfcomm_sock_ops = {
975 .family = PF_BLUETOOTH,
976 .owner = THIS_MODULE,
977 .release = rfcomm_sock_release,
978 .bind = rfcomm_sock_bind,
979 .connect = rfcomm_sock_connect,
980 .listen = rfcomm_sock_listen,
981 .accept = rfcomm_sock_accept,
982 .getname = rfcomm_sock_getname,
983 .sendmsg = rfcomm_sock_sendmsg,
984 .recvmsg = rfcomm_sock_recvmsg,
985 .shutdown = rfcomm_sock_shutdown,
986 .setsockopt = rfcomm_sock_setsockopt,
987 .getsockopt = rfcomm_sock_getsockopt,
988 .ioctl = rfcomm_sock_ioctl,
989 .poll = bt_sock_poll,
990 .socketpair = sock_no_socketpair,
994 static struct net_proto_family rfcomm_sock_family_ops = {
995 .family = PF_BLUETOOTH,
996 .owner = THIS_MODULE,
997 .create = rfcomm_sock_create
1000 int __init rfcomm_init_sockets(void)
1004 err = proto_register(&rfcomm_proto, 0);
1008 err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops);
1012 rfcomm_sock_proc_init();
1014 BT_INFO("RFCOMM socket layer initialized");
1019 BT_ERR("RFCOMM socket layer registration failed");
1020 proto_unregister(&rfcomm_proto);
1024 void __exit rfcomm_cleanup_sockets(void)
1026 rfcomm_sock_proc_cleanup();
1028 if (bt_sock_unregister(BTPROTO_RFCOMM) < 0)
1029 BT_ERR("RFCOMM socket layer unregistration failed");
1031 proto_unregister(&rfcomm_proto);