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.
28 #include <linux/export.h>
29 #include <linux/debugfs.h>
31 #include <net/bluetooth/bluetooth.h>
32 #include <net/bluetooth/hci_core.h>
33 #include <net/bluetooth/l2cap.h>
34 #include <net/bluetooth/rfcomm.h>
36 static const struct proto_ops rfcomm_sock_ops;
38 static struct bt_sock_list rfcomm_sk_list = {
39 .lock = __RW_LOCK_UNLOCKED(rfcomm_sk_list.lock)
42 static void rfcomm_sock_close(struct sock *sk);
43 static void rfcomm_sock_kill(struct sock *sk);
45 /* ---- DLC callbacks ----
47 * called under rfcomm_dlc_lock()
49 static void rfcomm_sk_data_ready(struct rfcomm_dlc *d, struct sk_buff *skb)
51 struct sock *sk = d->owner;
55 atomic_add(skb->len, &sk->sk_rmem_alloc);
56 skb_queue_tail(&sk->sk_receive_queue, skb);
57 sk->sk_data_ready(sk, skb->len);
59 if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf)
60 rfcomm_dlc_throttle(d);
63 static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err)
65 struct sock *sk = d->owner, *parent;
71 BT_DBG("dlc %p state %ld err %d", d, d->state, err);
73 local_irq_save(flags);
79 sk->sk_state = d->state;
81 parent = bt_sk(sk)->parent;
83 if (d->state == BT_CLOSED) {
84 sock_set_flag(sk, SOCK_ZAPPED);
87 parent->sk_data_ready(parent, 0);
89 if (d->state == BT_CONNECTED)
90 rfcomm_session_getaddr(d->session, &bt_sk(sk)->src, NULL);
91 sk->sk_state_change(sk);
95 local_irq_restore(flags);
97 if (parent && sock_flag(sk, SOCK_ZAPPED)) {
98 /* We have to drop DLC lock here, otherwise
99 * rfcomm_sock_destruct() will dead lock. */
100 rfcomm_dlc_unlock(d);
101 rfcomm_sock_kill(sk);
106 /* ---- Socket functions ---- */
107 static struct sock *__rfcomm_get_sock_by_addr(u8 channel, bdaddr_t *src)
109 struct sock *sk = NULL;
110 struct hlist_node *node;
112 sk_for_each(sk, node, &rfcomm_sk_list.head) {
113 if (rfcomm_pi(sk)->channel == channel &&
114 !bacmp(&bt_sk(sk)->src, src))
118 return node ? sk : NULL;
121 /* Find socket with channel and source bdaddr.
122 * Returns closest match.
124 static struct sock *rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src)
126 struct sock *sk = NULL, *sk1 = NULL;
127 struct hlist_node *node;
129 read_lock(&rfcomm_sk_list.lock);
131 sk_for_each(sk, node, &rfcomm_sk_list.head) {
132 if (state && sk->sk_state != state)
135 if (rfcomm_pi(sk)->channel == channel) {
137 if (!bacmp(&bt_sk(sk)->src, src))
141 if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY))
146 read_unlock(&rfcomm_sk_list.lock);
148 return node ? sk : sk1;
151 static void rfcomm_sock_destruct(struct sock *sk)
153 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
155 BT_DBG("sk %p dlc %p", sk, d);
157 skb_queue_purge(&sk->sk_receive_queue);
158 skb_queue_purge(&sk->sk_write_queue);
161 rfcomm_pi(sk)->dlc = NULL;
163 /* Detach DLC if it's owned by this socket */
166 rfcomm_dlc_unlock(d);
171 static void rfcomm_sock_cleanup_listen(struct sock *parent)
175 BT_DBG("parent %p", parent);
177 /* Close not yet accepted dlcs */
178 while ((sk = bt_accept_dequeue(parent, NULL))) {
179 rfcomm_sock_close(sk);
180 rfcomm_sock_kill(sk);
183 parent->sk_state = BT_CLOSED;
184 sock_set_flag(parent, SOCK_ZAPPED);
187 /* Kill socket (only if zapped and orphan)
188 * Must be called on unlocked socket.
190 static void rfcomm_sock_kill(struct sock *sk)
192 if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
195 BT_DBG("sk %p state %d refcnt %d", sk, sk->sk_state, atomic_read(&sk->sk_refcnt));
197 /* Kill poor orphan */
198 bt_sock_unlink(&rfcomm_sk_list, sk);
199 sock_set_flag(sk, SOCK_DEAD);
203 static void __rfcomm_sock_close(struct sock *sk)
205 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
207 BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
209 switch (sk->sk_state) {
211 rfcomm_sock_cleanup_listen(sk);
218 rfcomm_dlc_close(d, 0);
221 sock_set_flag(sk, SOCK_ZAPPED);
227 * Must be called on unlocked socket.
229 static void rfcomm_sock_close(struct sock *sk)
232 __rfcomm_sock_close(sk);
236 static void rfcomm_sock_init(struct sock *sk, struct sock *parent)
238 struct rfcomm_pinfo *pi = rfcomm_pi(sk);
243 sk->sk_type = parent->sk_type;
244 pi->dlc->defer_setup = test_bit(BT_SK_DEFER_SETUP,
245 &bt_sk(parent)->flags);
247 pi->sec_level = rfcomm_pi(parent)->sec_level;
248 pi->role_switch = rfcomm_pi(parent)->role_switch;
250 security_sk_clone(parent, sk);
252 pi->dlc->defer_setup = 0;
254 pi->sec_level = BT_SECURITY_LOW;
258 pi->dlc->sec_level = pi->sec_level;
259 pi->dlc->role_switch = pi->role_switch;
262 static struct proto rfcomm_proto = {
264 .owner = THIS_MODULE,
265 .obj_size = sizeof(struct rfcomm_pinfo)
268 static struct sock *rfcomm_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio)
270 struct rfcomm_dlc *d;
273 sk = sk_alloc(net, PF_BLUETOOTH, prio, &rfcomm_proto);
277 sock_init_data(sock, sk);
278 INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
280 d = rfcomm_dlc_alloc(prio);
286 d->data_ready = rfcomm_sk_data_ready;
287 d->state_change = rfcomm_sk_state_change;
289 rfcomm_pi(sk)->dlc = d;
292 sk->sk_destruct = rfcomm_sock_destruct;
293 sk->sk_sndtimeo = RFCOMM_CONN_TIMEOUT;
295 sk->sk_sndbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10;
296 sk->sk_rcvbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10;
298 sock_reset_flag(sk, SOCK_ZAPPED);
300 sk->sk_protocol = proto;
301 sk->sk_state = BT_OPEN;
303 bt_sock_link(&rfcomm_sk_list, sk);
309 static int rfcomm_sock_create(struct net *net, struct socket *sock,
310 int protocol, int kern)
314 BT_DBG("sock %p", sock);
316 sock->state = SS_UNCONNECTED;
318 if (sock->type != SOCK_STREAM && sock->type != SOCK_RAW)
319 return -ESOCKTNOSUPPORT;
321 sock->ops = &rfcomm_sock_ops;
323 sk = rfcomm_sock_alloc(net, sock, protocol, GFP_ATOMIC);
327 rfcomm_sock_init(sk, NULL);
331 static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
333 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
334 struct sock *sk = sock->sk;
337 BT_DBG("sk %p %s", sk, batostr(&sa->rc_bdaddr));
339 if (!addr || addr->sa_family != AF_BLUETOOTH)
344 if (sk->sk_state != BT_OPEN) {
349 if (sk->sk_type != SOCK_STREAM) {
354 write_lock(&rfcomm_sk_list.lock);
356 if (sa->rc_channel && __rfcomm_get_sock_by_addr(sa->rc_channel, &sa->rc_bdaddr)) {
359 /* Save source address */
360 bacpy(&bt_sk(sk)->src, &sa->rc_bdaddr);
361 rfcomm_pi(sk)->channel = sa->rc_channel;
362 sk->sk_state = BT_BOUND;
365 write_unlock(&rfcomm_sk_list.lock);
372 static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
374 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
375 struct sock *sk = sock->sk;
376 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
381 if (alen < sizeof(struct sockaddr_rc) ||
382 addr->sa_family != AF_BLUETOOTH)
387 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) {
392 if (sk->sk_type != SOCK_STREAM) {
397 sk->sk_state = BT_CONNECT;
398 bacpy(&bt_sk(sk)->dst, &sa->rc_bdaddr);
399 rfcomm_pi(sk)->channel = sa->rc_channel;
401 d->sec_level = rfcomm_pi(sk)->sec_level;
402 d->role_switch = rfcomm_pi(sk)->role_switch;
404 err = rfcomm_dlc_open(d, &bt_sk(sk)->src, &sa->rc_bdaddr, sa->rc_channel);
406 err = bt_sock_wait_state(sk, BT_CONNECTED,
407 sock_sndtimeo(sk, flags & O_NONBLOCK));
414 static int rfcomm_sock_listen(struct socket *sock, int backlog)
416 struct sock *sk = sock->sk;
419 BT_DBG("sk %p backlog %d", sk, backlog);
423 if (sk->sk_state != BT_BOUND) {
428 if (sk->sk_type != SOCK_STREAM) {
433 if (!rfcomm_pi(sk)->channel) {
434 bdaddr_t *src = &bt_sk(sk)->src;
439 write_lock(&rfcomm_sk_list.lock);
441 for (channel = 1; channel < 31; channel++)
442 if (!__rfcomm_get_sock_by_addr(channel, src)) {
443 rfcomm_pi(sk)->channel = channel;
448 write_unlock(&rfcomm_sk_list.lock);
454 sk->sk_max_ack_backlog = backlog;
455 sk->sk_ack_backlog = 0;
456 sk->sk_state = BT_LISTEN;
463 static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int flags)
465 DECLARE_WAITQUEUE(wait, current);
466 struct sock *sk = sock->sk, *nsk;
472 if (sk->sk_type != SOCK_STREAM) {
477 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
479 BT_DBG("sk %p timeo %ld", sk, timeo);
481 /* Wait for an incoming connection. (wake-one). */
482 add_wait_queue_exclusive(sk_sleep(sk), &wait);
484 set_current_state(TASK_INTERRUPTIBLE);
486 if (sk->sk_state != BT_LISTEN) {
491 nsk = bt_accept_dequeue(sk, newsock);
500 if (signal_pending(current)) {
501 err = sock_intr_errno(timeo);
506 timeo = schedule_timeout(timeo);
509 __set_current_state(TASK_RUNNING);
510 remove_wait_queue(sk_sleep(sk), &wait);
515 newsock->state = SS_CONNECTED;
517 BT_DBG("new socket %p", nsk);
524 static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
526 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
527 struct sock *sk = sock->sk;
529 BT_DBG("sock %p, sk %p", sock, sk);
531 sa->rc_family = AF_BLUETOOTH;
532 sa->rc_channel = rfcomm_pi(sk)->channel;
534 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->dst);
536 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->src);
538 *len = sizeof(struct sockaddr_rc);
542 static int rfcomm_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
543 struct msghdr *msg, size_t len)
545 struct sock *sk = sock->sk;
546 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
550 if (test_bit(RFCOMM_DEFER_SETUP, &d->flags))
553 if (msg->msg_flags & MSG_OOB)
556 if (sk->sk_shutdown & SEND_SHUTDOWN)
559 BT_DBG("sock %p, sk %p", sock, sk);
564 size_t size = min_t(size_t, len, d->mtu);
567 skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE,
568 msg->msg_flags & MSG_DONTWAIT, &err);
574 skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE);
576 err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
584 skb->priority = sk->sk_priority;
586 err = rfcomm_dlc_send(d, skb);
603 static int rfcomm_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
604 struct msghdr *msg, size_t size, int flags)
606 struct sock *sk = sock->sk;
607 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
610 if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) {
611 rfcomm_dlc_accept(d);
615 len = bt_sock_stream_recvmsg(iocb, sock, msg, size, flags);
618 if (!(flags & MSG_PEEK) && len > 0)
619 atomic_sub(len, &sk->sk_rmem_alloc);
621 if (atomic_read(&sk->sk_rmem_alloc) <= (sk->sk_rcvbuf >> 2))
622 rfcomm_dlc_unthrottle(rfcomm_pi(sk)->dlc);
628 static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen)
630 struct sock *sk = sock->sk;
640 if (get_user(opt, (u32 __user *) optval)) {
645 if (opt & RFCOMM_LM_AUTH)
646 rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW;
647 if (opt & RFCOMM_LM_ENCRYPT)
648 rfcomm_pi(sk)->sec_level = BT_SECURITY_MEDIUM;
649 if (opt & RFCOMM_LM_SECURE)
650 rfcomm_pi(sk)->sec_level = BT_SECURITY_HIGH;
652 rfcomm_pi(sk)->role_switch = (opt & RFCOMM_LM_MASTER);
664 static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
666 struct sock *sk = sock->sk;
667 struct bt_security sec;
674 if (level == SOL_RFCOMM)
675 return rfcomm_sock_setsockopt_old(sock, optname, optval, optlen);
677 if (level != SOL_BLUETOOTH)
684 if (sk->sk_type != SOCK_STREAM) {
689 sec.level = BT_SECURITY_LOW;
691 len = min_t(unsigned int, sizeof(sec), optlen);
692 if (copy_from_user((char *) &sec, optval, len)) {
697 if (sec.level > BT_SECURITY_HIGH) {
702 rfcomm_pi(sk)->sec_level = sec.level;
706 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
711 if (get_user(opt, (u32 __user *) optval)) {
717 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
719 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
732 static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
734 struct sock *sk = sock->sk;
735 struct rfcomm_conninfo cinfo;
736 struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn;
742 if (get_user(len, optlen))
749 switch (rfcomm_pi(sk)->sec_level) {
750 case BT_SECURITY_LOW:
751 opt = RFCOMM_LM_AUTH;
753 case BT_SECURITY_MEDIUM:
754 opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT;
756 case BT_SECURITY_HIGH:
757 opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT |
765 if (rfcomm_pi(sk)->role_switch)
766 opt |= RFCOMM_LM_MASTER;
768 if (put_user(opt, (u32 __user *) optval))
772 case RFCOMM_CONNINFO:
773 if (sk->sk_state != BT_CONNECTED &&
774 !rfcomm_pi(sk)->dlc->defer_setup) {
779 memset(&cinfo, 0, sizeof(cinfo));
780 cinfo.hci_handle = conn->hcon->handle;
781 memcpy(cinfo.dev_class, conn->hcon->dev_class, 3);
783 len = min_t(unsigned int, len, sizeof(cinfo));
784 if (copy_to_user(optval, (char *) &cinfo, len))
798 static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
800 struct sock *sk = sock->sk;
801 struct bt_security sec;
806 if (level == SOL_RFCOMM)
807 return rfcomm_sock_getsockopt_old(sock, optname, optval, optlen);
809 if (level != SOL_BLUETOOTH)
812 if (get_user(len, optlen))
819 if (sk->sk_type != SOCK_STREAM) {
824 sec.level = rfcomm_pi(sk)->sec_level;
826 len = min_t(unsigned int, len, sizeof(sec));
827 if (copy_to_user(optval, (char *) &sec, len))
833 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
838 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
839 (u32 __user *) optval))
853 static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
855 struct sock *sk __maybe_unused = sock->sk;
858 BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg);
860 err = bt_sock_ioctl(sock, cmd, arg);
862 if (err == -ENOIOCTLCMD) {
863 #ifdef CONFIG_BT_RFCOMM_TTY
865 err = rfcomm_dev_ioctl(sk, cmd, (void __user *) arg);
875 static int rfcomm_sock_shutdown(struct socket *sock, int how)
877 struct sock *sk = sock->sk;
880 BT_DBG("sock %p, sk %p", sock, sk);
886 if (!sk->sk_shutdown) {
887 sk->sk_shutdown = SHUTDOWN_MASK;
888 __rfcomm_sock_close(sk);
890 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
891 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
897 static int rfcomm_sock_release(struct socket *sock)
899 struct sock *sk = sock->sk;
902 BT_DBG("sock %p, sk %p", sock, sk);
907 err = rfcomm_sock_shutdown(sock, 2);
910 rfcomm_sock_kill(sk);
914 /* ---- RFCOMM core layer callbacks ----
916 * called under rfcomm_lock()
918 int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d)
920 struct sock *sk, *parent;
924 BT_DBG("session %p channel %d", s, channel);
926 rfcomm_session_getaddr(s, &src, &dst);
928 /* Check if we have socket listening on channel */
929 parent = rfcomm_get_sock_by_channel(BT_LISTEN, channel, &src);
933 bh_lock_sock(parent);
935 /* Check for backlog size */
936 if (sk_acceptq_is_full(parent)) {
937 BT_DBG("backlog full %d", parent->sk_ack_backlog);
941 sk = rfcomm_sock_alloc(sock_net(parent), NULL, BTPROTO_RFCOMM, GFP_ATOMIC);
945 bt_sock_reclassify_lock(sk, BTPROTO_RFCOMM);
947 rfcomm_sock_init(sk, parent);
948 bacpy(&bt_sk(sk)->src, &src);
949 bacpy(&bt_sk(sk)->dst, &dst);
950 rfcomm_pi(sk)->channel = channel;
952 sk->sk_state = BT_CONFIG;
953 bt_accept_enqueue(parent, sk);
955 /* Accept connection and return socket DLC */
956 *d = rfcomm_pi(sk)->dlc;
960 bh_unlock_sock(parent);
962 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
963 parent->sk_state_change(parent);
968 static int rfcomm_sock_debugfs_show(struct seq_file *f, void *p)
971 struct hlist_node *node;
973 read_lock(&rfcomm_sk_list.lock);
975 sk_for_each(sk, node, &rfcomm_sk_list.head) {
976 seq_printf(f, "%s %s %d %d\n",
977 batostr(&bt_sk(sk)->src),
978 batostr(&bt_sk(sk)->dst),
979 sk->sk_state, rfcomm_pi(sk)->channel);
982 read_unlock(&rfcomm_sk_list.lock);
987 static int rfcomm_sock_debugfs_open(struct inode *inode, struct file *file)
989 return single_open(file, rfcomm_sock_debugfs_show, inode->i_private);
992 static const struct file_operations rfcomm_sock_debugfs_fops = {
993 .open = rfcomm_sock_debugfs_open,
996 .release = single_release,
999 static struct dentry *rfcomm_sock_debugfs;
1001 static const struct proto_ops rfcomm_sock_ops = {
1002 .family = PF_BLUETOOTH,
1003 .owner = THIS_MODULE,
1004 .release = rfcomm_sock_release,
1005 .bind = rfcomm_sock_bind,
1006 .connect = rfcomm_sock_connect,
1007 .listen = rfcomm_sock_listen,
1008 .accept = rfcomm_sock_accept,
1009 .getname = rfcomm_sock_getname,
1010 .sendmsg = rfcomm_sock_sendmsg,
1011 .recvmsg = rfcomm_sock_recvmsg,
1012 .shutdown = rfcomm_sock_shutdown,
1013 .setsockopt = rfcomm_sock_setsockopt,
1014 .getsockopt = rfcomm_sock_getsockopt,
1015 .ioctl = rfcomm_sock_ioctl,
1016 .poll = bt_sock_poll,
1017 .socketpair = sock_no_socketpair,
1018 .mmap = sock_no_mmap
1021 static const struct net_proto_family rfcomm_sock_family_ops = {
1022 .family = PF_BLUETOOTH,
1023 .owner = THIS_MODULE,
1024 .create = rfcomm_sock_create
1027 int __init rfcomm_init_sockets(void)
1031 err = proto_register(&rfcomm_proto, 0);
1035 err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops);
1040 rfcomm_sock_debugfs = debugfs_create_file("rfcomm", 0444,
1041 bt_debugfs, NULL, &rfcomm_sock_debugfs_fops);
1042 if (!rfcomm_sock_debugfs)
1043 BT_ERR("Failed to create RFCOMM debug file");
1046 BT_INFO("RFCOMM socket layer initialized");
1051 BT_ERR("RFCOMM socket layer registration failed");
1052 proto_unregister(&rfcomm_proto);
1056 void __exit rfcomm_cleanup_sockets(void)
1058 debugfs_remove(rfcomm_sock_debugfs);
1060 if (bt_sock_unregister(BTPROTO_RFCOMM) < 0)
1061 BT_ERR("RFCOMM socket layer unregistration failed");
1063 proto_unregister(&rfcomm_proto);