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/module.h>
30 #include <linux/types.h>
31 #include <linux/errno.h>
32 #include <linux/kernel.h>
33 #include <linux/sched.h>
34 #include <linux/slab.h>
35 #include <linux/poll.h>
36 #include <linux/fcntl.h>
37 #include <linux/init.h>
38 #include <linux/interrupt.h>
39 #include <linux/socket.h>
40 #include <linux/skbuff.h>
41 #include <linux/list.h>
42 #include <linux/device.h>
43 #include <linux/debugfs.h>
44 #include <linux/seq_file.h>
45 #include <linux/security.h>
48 #include <asm/system.h>
49 #include <linux/uaccess.h>
51 #include <net/bluetooth/bluetooth.h>
52 #include <net/bluetooth/hci_core.h>
53 #include <net/bluetooth/l2cap.h>
54 #include <net/bluetooth/rfcomm.h>
56 static const struct proto_ops rfcomm_sock_ops;
58 static struct bt_sock_list rfcomm_sk_list = {
59 .lock = __RW_LOCK_UNLOCKED(rfcomm_sk_list.lock)
62 static void rfcomm_sock_close(struct sock *sk);
63 static void rfcomm_sock_kill(struct sock *sk);
65 /* ---- DLC callbacks ----
67 * called under rfcomm_dlc_lock()
69 static void rfcomm_sk_data_ready(struct rfcomm_dlc *d, struct sk_buff *skb)
71 struct sock *sk = d->owner;
75 atomic_add(skb->len, &sk->sk_rmem_alloc);
76 skb_queue_tail(&sk->sk_receive_queue, skb);
77 sk->sk_data_ready(sk, skb->len);
79 if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf)
80 rfcomm_dlc_throttle(d);
83 static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err)
85 struct sock *sk = d->owner, *parent;
91 BT_DBG("dlc %p state %ld err %d", d, d->state, err);
93 local_irq_save(flags);
99 sk->sk_state = d->state;
101 parent = bt_sk(sk)->parent;
103 if (d->state == BT_CLOSED) {
104 sock_set_flag(sk, SOCK_ZAPPED);
105 bt_accept_unlink(sk);
107 parent->sk_data_ready(parent, 0);
109 if (d->state == BT_CONNECTED)
110 rfcomm_session_getaddr(d->session, &bt_sk(sk)->src, NULL);
111 sk->sk_state_change(sk);
115 local_irq_restore(flags);
117 if (parent && sock_flag(sk, SOCK_ZAPPED)) {
118 /* We have to drop DLC lock here, otherwise
119 * rfcomm_sock_destruct() will dead lock. */
120 rfcomm_dlc_unlock(d);
121 rfcomm_sock_kill(sk);
126 /* ---- Socket functions ---- */
127 static struct sock *__rfcomm_get_sock_by_addr(u8 channel, bdaddr_t *src)
129 struct sock *sk = NULL;
130 struct hlist_node *node;
132 sk_for_each(sk, node, &rfcomm_sk_list.head) {
133 if (rfcomm_pi(sk)->channel == channel &&
134 !bacmp(&bt_sk(sk)->src, src))
138 return node ? sk : NULL;
141 /* Find socket with channel and source bdaddr.
142 * Returns closest match.
144 static struct sock *rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src)
146 struct sock *sk = NULL, *sk1 = NULL;
147 struct hlist_node *node;
149 read_lock(&rfcomm_sk_list.lock);
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))
166 read_unlock(&rfcomm_sk_list.lock);
168 return node ? sk : sk1;
171 static void rfcomm_sock_destruct(struct sock *sk)
173 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
175 BT_DBG("sk %p dlc %p", sk, d);
177 skb_queue_purge(&sk->sk_receive_queue);
178 skb_queue_purge(&sk->sk_write_queue);
181 rfcomm_pi(sk)->dlc = NULL;
183 /* Detach DLC if it's owned by this socket */
186 rfcomm_dlc_unlock(d);
191 static void rfcomm_sock_cleanup_listen(struct sock *parent)
195 BT_DBG("parent %p", parent);
197 /* Close not yet accepted dlcs */
198 while ((sk = bt_accept_dequeue(parent, NULL))) {
199 rfcomm_sock_close(sk);
200 rfcomm_sock_kill(sk);
203 parent->sk_state = BT_CLOSED;
204 sock_set_flag(parent, SOCK_ZAPPED);
207 /* Kill socket (only if zapped and orphan)
208 * Must be called on unlocked socket.
210 static void rfcomm_sock_kill(struct sock *sk)
212 if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
215 BT_DBG("sk %p state %d refcnt %d", sk, sk->sk_state, atomic_read(&sk->sk_refcnt));
217 /* Kill poor orphan */
218 bt_sock_unlink(&rfcomm_sk_list, sk);
219 sock_set_flag(sk, SOCK_DEAD);
223 static void __rfcomm_sock_close(struct sock *sk)
225 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
227 BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
229 switch (sk->sk_state) {
231 rfcomm_sock_cleanup_listen(sk);
238 rfcomm_dlc_close(d, 0);
241 sock_set_flag(sk, SOCK_ZAPPED);
247 * Must be called on unlocked socket.
249 static void rfcomm_sock_close(struct sock *sk)
252 __rfcomm_sock_close(sk);
256 static void rfcomm_sock_init(struct sock *sk, struct sock *parent)
258 struct rfcomm_pinfo *pi = rfcomm_pi(sk);
263 sk->sk_type = parent->sk_type;
264 pi->dlc->defer_setup = bt_sk(parent)->defer_setup;
266 pi->sec_level = rfcomm_pi(parent)->sec_level;
267 pi->role_switch = rfcomm_pi(parent)->role_switch;
269 security_sk_clone(parent, sk);
271 pi->dlc->defer_setup = 0;
273 pi->sec_level = BT_SECURITY_LOW;
277 pi->dlc->sec_level = pi->sec_level;
278 pi->dlc->role_switch = pi->role_switch;
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 net *net, struct socket *sock, int proto, gfp_t prio)
289 struct rfcomm_dlc *d;
292 sk = sk_alloc(net, PF_BLUETOOTH, prio, &rfcomm_proto);
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 net *net, struct socket *sock,
329 int protocol, int kern)
333 BT_DBG("sock %p", sock);
335 sock->state = SS_UNCONNECTED;
337 if (sock->type != SOCK_STREAM && sock->type != SOCK_RAW)
338 return -ESOCKTNOSUPPORT;
340 sock->ops = &rfcomm_sock_ops;
342 sk = rfcomm_sock_alloc(net, sock, protocol, GFP_ATOMIC);
346 rfcomm_sock_init(sk, NULL);
350 static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
352 struct sockaddr_rc sa;
353 struct sock *sk = sock->sk;
356 if (!addr || addr->sa_family != AF_BLUETOOTH)
359 memset(&sa, 0, sizeof(sa));
360 len = min_t(unsigned int, sizeof(sa), addr_len);
361 memcpy(&sa, addr, len);
363 BT_DBG("sk %p %s", sk, batostr(&sa.rc_bdaddr));
367 if (sk->sk_state != BT_OPEN) {
372 if (sk->sk_type != SOCK_STREAM) {
377 write_lock_bh(&rfcomm_sk_list.lock);
380 __rfcomm_get_sock_by_addr(sa.rc_channel, &sa.rc_bdaddr)) {
383 /* Save source address */
384 bacpy(&bt_sk(sk)->src, &sa.rc_bdaddr);
385 rfcomm_pi(sk)->channel = sa.rc_channel;
386 sk->sk_state = BT_BOUND;
389 write_unlock_bh(&rfcomm_sk_list.lock);
396 static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
398 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
399 struct sock *sk = sock->sk;
400 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
405 if (alen < sizeof(struct sockaddr_rc) ||
406 addr->sa_family != AF_BLUETOOTH)
411 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) {
416 if (sk->sk_type != SOCK_STREAM) {
421 sk->sk_state = BT_CONNECT;
422 bacpy(&bt_sk(sk)->dst, &sa->rc_bdaddr);
423 rfcomm_pi(sk)->channel = sa->rc_channel;
425 d->sec_level = rfcomm_pi(sk)->sec_level;
426 d->role_switch = rfcomm_pi(sk)->role_switch;
428 err = rfcomm_dlc_open(d, &bt_sk(sk)->src, &sa->rc_bdaddr, sa->rc_channel);
430 err = bt_sock_wait_state(sk, BT_CONNECTED,
431 sock_sndtimeo(sk, flags & O_NONBLOCK));
438 static int rfcomm_sock_listen(struct socket *sock, int backlog)
440 struct sock *sk = sock->sk;
443 BT_DBG("sk %p backlog %d", sk, backlog);
447 if (sk->sk_state != BT_BOUND) {
452 if (sk->sk_type != SOCK_STREAM) {
457 if (!rfcomm_pi(sk)->channel) {
458 bdaddr_t *src = &bt_sk(sk)->src;
463 write_lock_bh(&rfcomm_sk_list.lock);
465 for (channel = 1; channel < 31; channel++)
466 if (!__rfcomm_get_sock_by_addr(channel, src)) {
467 rfcomm_pi(sk)->channel = channel;
472 write_unlock_bh(&rfcomm_sk_list.lock);
478 sk->sk_max_ack_backlog = backlog;
479 sk->sk_ack_backlog = 0;
480 sk->sk_state = BT_LISTEN;
487 static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int flags)
489 DECLARE_WAITQUEUE(wait, current);
490 struct sock *sk = sock->sk, *nsk;
494 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
496 if (sk->sk_type != SOCK_STREAM) {
501 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
503 BT_DBG("sk %p timeo %ld", sk, timeo);
505 /* Wait for an incoming connection. (wake-one). */
506 add_wait_queue_exclusive(sk_sleep(sk), &wait);
508 set_current_state(TASK_INTERRUPTIBLE);
510 if (sk->sk_state != BT_LISTEN) {
515 nsk = bt_accept_dequeue(sk, newsock);
524 if (signal_pending(current)) {
525 err = sock_intr_errno(timeo);
530 timeo = schedule_timeout(timeo);
531 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
533 __set_current_state(TASK_RUNNING);
534 remove_wait_queue(sk_sleep(sk), &wait);
539 newsock->state = SS_CONNECTED;
541 BT_DBG("new socket %p", nsk);
548 static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
550 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
551 struct sock *sk = sock->sk;
553 BT_DBG("sock %p, sk %p", sock, sk);
555 memset(sa, 0, sizeof(*sa));
556 sa->rc_family = AF_BLUETOOTH;
557 sa->rc_channel = rfcomm_pi(sk)->channel;
559 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->dst);
561 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->src);
563 *len = sizeof(struct sockaddr_rc);
567 static int rfcomm_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
568 struct msghdr *msg, size_t len)
570 struct sock *sk = sock->sk;
571 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
575 if (test_bit(RFCOMM_DEFER_SETUP, &d->flags))
578 if (msg->msg_flags & MSG_OOB)
581 if (sk->sk_shutdown & SEND_SHUTDOWN)
584 BT_DBG("sock %p, sk %p", sock, sk);
589 size_t size = min_t(size_t, len, d->mtu);
592 skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE,
593 msg->msg_flags & MSG_DONTWAIT, &err);
599 skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE);
601 err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
609 err = rfcomm_dlc_send(d, skb);
626 static int rfcomm_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
627 struct msghdr *msg, size_t size, int flags)
629 struct sock *sk = sock->sk;
630 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
633 if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) {
634 rfcomm_dlc_accept(d);
638 len = bt_sock_stream_recvmsg(iocb, sock, msg, size, flags);
641 if (!(flags & MSG_PEEK) && len > 0)
642 atomic_sub(len, &sk->sk_rmem_alloc);
644 if (atomic_read(&sk->sk_rmem_alloc) <= (sk->sk_rcvbuf >> 2))
645 rfcomm_dlc_unthrottle(rfcomm_pi(sk)->dlc);
651 static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen)
653 struct sock *sk = sock->sk;
663 if (get_user(opt, (u32 __user *) optval)) {
668 if (opt & RFCOMM_LM_AUTH)
669 rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW;
670 if (opt & RFCOMM_LM_ENCRYPT)
671 rfcomm_pi(sk)->sec_level = BT_SECURITY_MEDIUM;
672 if (opt & RFCOMM_LM_SECURE)
673 rfcomm_pi(sk)->sec_level = BT_SECURITY_HIGH;
675 rfcomm_pi(sk)->role_switch = (opt & RFCOMM_LM_MASTER);
687 static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
689 struct sock *sk = sock->sk;
690 struct bt_security sec;
697 if (level == SOL_RFCOMM)
698 return rfcomm_sock_setsockopt_old(sock, optname, optval, optlen);
700 if (level != SOL_BLUETOOTH)
707 if (sk->sk_type != SOCK_STREAM) {
712 sec.level = BT_SECURITY_LOW;
714 len = min_t(unsigned int, sizeof(sec), optlen);
715 if (copy_from_user((char *) &sec, optval, len)) {
720 if (sec.level > BT_SECURITY_HIGH) {
725 rfcomm_pi(sk)->sec_level = sec.level;
729 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
734 if (get_user(opt, (u32 __user *) optval)) {
739 bt_sk(sk)->defer_setup = opt;
751 static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
753 struct sock *sk = sock->sk;
754 struct rfcomm_conninfo cinfo;
755 struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn;
761 if (get_user(len, optlen))
768 switch (rfcomm_pi(sk)->sec_level) {
769 case BT_SECURITY_LOW:
770 opt = RFCOMM_LM_AUTH;
772 case BT_SECURITY_MEDIUM:
773 opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT;
775 case BT_SECURITY_HIGH:
776 opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT |
784 if (rfcomm_pi(sk)->role_switch)
785 opt |= RFCOMM_LM_MASTER;
787 if (put_user(opt, (u32 __user *) optval))
791 case RFCOMM_CONNINFO:
792 if (sk->sk_state != BT_CONNECTED &&
793 !rfcomm_pi(sk)->dlc->defer_setup) {
798 memset(&cinfo, 0, sizeof(cinfo));
799 cinfo.hci_handle = conn->hcon->handle;
800 memcpy(cinfo.dev_class, conn->hcon->dev_class, 3);
802 len = min_t(unsigned int, len, sizeof(cinfo));
803 if (copy_to_user(optval, (char *) &cinfo, len))
817 static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
819 struct sock *sk = sock->sk;
820 struct bt_security sec;
825 if (level == SOL_RFCOMM)
826 return rfcomm_sock_getsockopt_old(sock, optname, optval, optlen);
828 if (level != SOL_BLUETOOTH)
831 if (get_user(len, optlen))
838 if (sk->sk_type != SOCK_STREAM) {
843 sec.level = rfcomm_pi(sk)->sec_level;
846 len = min_t(unsigned int, len, sizeof(sec));
847 if (copy_to_user(optval, (char *) &sec, len))
853 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
858 if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval))
872 static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
874 struct sock *sk __maybe_unused = sock->sk;
877 BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg);
879 err = bt_sock_ioctl(sock, cmd, arg);
881 if (err == -ENOIOCTLCMD) {
882 #ifdef CONFIG_BT_RFCOMM_TTY
884 err = rfcomm_dev_ioctl(sk, cmd, (void __user *) arg);
894 static int rfcomm_sock_shutdown(struct socket *sock, int how)
896 struct sock *sk = sock->sk;
899 BT_DBG("sock %p, sk %p", sock, sk);
905 if (!sk->sk_shutdown) {
906 sk->sk_shutdown = SHUTDOWN_MASK;
907 __rfcomm_sock_close(sk);
909 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
910 !(current->flags & PF_EXITING))
911 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
917 static int rfcomm_sock_release(struct socket *sock)
919 struct sock *sk = sock->sk;
922 BT_DBG("sock %p, sk %p", sock, sk);
927 err = rfcomm_sock_shutdown(sock, 2);
930 rfcomm_sock_kill(sk);
934 /* ---- RFCOMM core layer callbacks ----
936 * called under rfcomm_lock()
938 int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d)
940 struct sock *sk, *parent;
944 BT_DBG("session %p channel %d", s, channel);
946 rfcomm_session_getaddr(s, &src, &dst);
948 /* Check if we have socket listening on channel */
949 parent = rfcomm_get_sock_by_channel(BT_LISTEN, channel, &src);
953 bh_lock_sock(parent);
955 /* Check for backlog size */
956 if (sk_acceptq_is_full(parent)) {
957 BT_DBG("backlog full %d", parent->sk_ack_backlog);
961 sk = rfcomm_sock_alloc(sock_net(parent), NULL, BTPROTO_RFCOMM, GFP_ATOMIC);
965 rfcomm_sock_init(sk, parent);
966 bacpy(&bt_sk(sk)->src, &src);
967 bacpy(&bt_sk(sk)->dst, &dst);
968 rfcomm_pi(sk)->channel = channel;
970 sk->sk_state = BT_CONFIG;
971 bt_accept_enqueue(parent, sk);
973 /* Accept connection and return socket DLC */
974 *d = rfcomm_pi(sk)->dlc;
978 bh_unlock_sock(parent);
980 if (bt_sk(parent)->defer_setup)
981 parent->sk_state_change(parent);
986 static int rfcomm_sock_debugfs_show(struct seq_file *f, void *p)
989 struct hlist_node *node;
991 read_lock_bh(&rfcomm_sk_list.lock);
993 sk_for_each(sk, node, &rfcomm_sk_list.head) {
994 seq_printf(f, "%s %s %d %d\n",
995 batostr(&bt_sk(sk)->src),
996 batostr(&bt_sk(sk)->dst),
997 sk->sk_state, rfcomm_pi(sk)->channel);
1000 read_unlock_bh(&rfcomm_sk_list.lock);
1005 static int rfcomm_sock_debugfs_open(struct inode *inode, struct file *file)
1007 return single_open(file, rfcomm_sock_debugfs_show, inode->i_private);
1010 static const struct file_operations rfcomm_sock_debugfs_fops = {
1011 .open = rfcomm_sock_debugfs_open,
1013 .llseek = seq_lseek,
1014 .release = single_release,
1017 static struct dentry *rfcomm_sock_debugfs;
1019 static const struct proto_ops rfcomm_sock_ops = {
1020 .family = PF_BLUETOOTH,
1021 .owner = THIS_MODULE,
1022 .release = rfcomm_sock_release,
1023 .bind = rfcomm_sock_bind,
1024 .connect = rfcomm_sock_connect,
1025 .listen = rfcomm_sock_listen,
1026 .accept = rfcomm_sock_accept,
1027 .getname = rfcomm_sock_getname,
1028 .sendmsg = rfcomm_sock_sendmsg,
1029 .recvmsg = rfcomm_sock_recvmsg,
1030 .shutdown = rfcomm_sock_shutdown,
1031 .setsockopt = rfcomm_sock_setsockopt,
1032 .getsockopt = rfcomm_sock_getsockopt,
1033 .ioctl = rfcomm_sock_ioctl,
1034 .poll = bt_sock_poll,
1035 .socketpair = sock_no_socketpair,
1036 .mmap = sock_no_mmap
1039 static const struct net_proto_family rfcomm_sock_family_ops = {
1040 .family = PF_BLUETOOTH,
1041 .owner = THIS_MODULE,
1042 .create = rfcomm_sock_create
1045 int __init rfcomm_init_sockets(void)
1049 err = proto_register(&rfcomm_proto, 0);
1053 err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops);
1058 rfcomm_sock_debugfs = debugfs_create_file("rfcomm", 0444,
1059 bt_debugfs, NULL, &rfcomm_sock_debugfs_fops);
1060 if (!rfcomm_sock_debugfs)
1061 BT_ERR("Failed to create RFCOMM debug file");
1064 BT_INFO("RFCOMM socket layer initialized");
1069 BT_ERR("RFCOMM socket layer registration failed");
1070 proto_unregister(&rfcomm_proto);
1074 void __exit rfcomm_cleanup_sockets(void)
1076 debugfs_remove(rfcomm_sock_debugfs);
1078 if (bt_sock_unregister(BTPROTO_RFCOMM) < 0)
1079 BT_ERR("RFCOMM socket layer unregistration failed");
1081 proto_unregister(&rfcomm_proto);