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 <linux/uaccess.h>
50 #include <net/bluetooth/bluetooth.h>
51 #include <net/bluetooth/hci_core.h>
52 #include <net/bluetooth/l2cap.h>
53 #include <net/bluetooth/rfcomm.h>
55 static const struct proto_ops rfcomm_sock_ops;
57 static struct bt_sock_list rfcomm_sk_list = {
58 .lock = __RW_LOCK_UNLOCKED(rfcomm_sk_list.lock)
61 static void rfcomm_sock_close(struct sock *sk);
62 static void rfcomm_sock_kill(struct sock *sk);
64 /* ---- DLC callbacks ----
66 * called under rfcomm_dlc_lock()
68 static void rfcomm_sk_data_ready(struct rfcomm_dlc *d, struct sk_buff *skb)
70 struct sock *sk = d->owner;
74 atomic_add(skb->len, &sk->sk_rmem_alloc);
75 skb_queue_tail(&sk->sk_receive_queue, skb);
76 sk->sk_data_ready(sk, skb->len);
78 if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf)
79 rfcomm_dlc_throttle(d);
82 static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err)
84 struct sock *sk = d->owner, *parent;
90 BT_DBG("dlc %p state %ld err %d", d, d->state, err);
92 local_irq_save(flags);
98 sk->sk_state = d->state;
100 parent = bt_sk(sk)->parent;
102 if (d->state == BT_CLOSED) {
103 sock_set_flag(sk, SOCK_ZAPPED);
104 bt_accept_unlink(sk);
106 parent->sk_data_ready(parent, 0);
108 if (d->state == BT_CONNECTED)
109 rfcomm_session_getaddr(d->session, &bt_sk(sk)->src, NULL);
110 sk->sk_state_change(sk);
114 local_irq_restore(flags);
116 if (parent && sock_flag(sk, SOCK_ZAPPED)) {
117 /* We have to drop DLC lock here, otherwise
118 * rfcomm_sock_destruct() will dead lock. */
119 rfcomm_dlc_unlock(d);
120 rfcomm_sock_kill(sk);
125 /* ---- Socket functions ---- */
126 static struct sock *__rfcomm_get_sock_by_addr(u8 channel, bdaddr_t *src)
128 struct sock *sk = NULL;
129 struct hlist_node *node;
131 sk_for_each(sk, node, &rfcomm_sk_list.head) {
132 if (rfcomm_pi(sk)->channel == channel &&
133 !bacmp(&bt_sk(sk)->src, src))
137 return node ? sk : NULL;
140 /* Find socket with channel and source bdaddr.
141 * Returns closest match.
143 static struct sock *rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src)
145 struct sock *sk = NULL, *sk1 = NULL;
146 struct hlist_node *node;
148 read_lock(&rfcomm_sk_list.lock);
150 sk_for_each(sk, node, &rfcomm_sk_list.head) {
151 if (state && sk->sk_state != state)
154 if (rfcomm_pi(sk)->channel == channel) {
156 if (!bacmp(&bt_sk(sk)->src, src))
160 if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY))
165 read_unlock(&rfcomm_sk_list.lock);
167 return node ? sk : sk1;
170 static void rfcomm_sock_destruct(struct sock *sk)
172 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
174 BT_DBG("sk %p dlc %p", sk, d);
176 skb_queue_purge(&sk->sk_receive_queue);
177 skb_queue_purge(&sk->sk_write_queue);
180 rfcomm_pi(sk)->dlc = NULL;
182 /* Detach DLC if it's owned by this socket */
185 rfcomm_dlc_unlock(d);
190 static void rfcomm_sock_cleanup_listen(struct sock *parent)
194 BT_DBG("parent %p", parent);
196 /* Close not yet accepted dlcs */
197 while ((sk = bt_accept_dequeue(parent, NULL))) {
198 rfcomm_sock_close(sk);
199 rfcomm_sock_kill(sk);
202 parent->sk_state = BT_CLOSED;
203 sock_set_flag(parent, SOCK_ZAPPED);
206 /* Kill socket (only if zapped and orphan)
207 * Must be called on unlocked socket.
209 static void rfcomm_sock_kill(struct sock *sk)
211 if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
214 BT_DBG("sk %p state %d refcnt %d", sk, sk->sk_state, atomic_read(&sk->sk_refcnt));
216 /* Kill poor orphan */
217 bt_sock_unlink(&rfcomm_sk_list, sk);
218 sock_set_flag(sk, SOCK_DEAD);
222 static void __rfcomm_sock_close(struct sock *sk)
224 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
226 BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
228 switch (sk->sk_state) {
230 rfcomm_sock_cleanup_listen(sk);
237 rfcomm_dlc_close(d, 0);
240 sock_set_flag(sk, SOCK_ZAPPED);
246 * Must be called on unlocked socket.
248 static void rfcomm_sock_close(struct sock *sk)
251 __rfcomm_sock_close(sk);
255 static void rfcomm_sock_init(struct sock *sk, struct sock *parent)
257 struct rfcomm_pinfo *pi = rfcomm_pi(sk);
262 sk->sk_type = parent->sk_type;
263 pi->dlc->defer_setup = test_bit(BT_SK_DEFER_SETUP,
264 &bt_sk(parent)->flags);
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 = (struct sockaddr_rc *) addr;
353 struct sock *sk = sock->sk;
356 BT_DBG("sk %p %s", sk, batostr(&sa->rc_bdaddr));
358 if (!addr || addr->sa_family != AF_BLUETOOTH)
363 if (sk->sk_state != BT_OPEN) {
368 if (sk->sk_type != SOCK_STREAM) {
373 write_lock(&rfcomm_sk_list.lock);
375 if (sa->rc_channel && __rfcomm_get_sock_by_addr(sa->rc_channel, &sa->rc_bdaddr)) {
378 /* Save source address */
379 bacpy(&bt_sk(sk)->src, &sa->rc_bdaddr);
380 rfcomm_pi(sk)->channel = sa->rc_channel;
381 sk->sk_state = BT_BOUND;
384 write_unlock(&rfcomm_sk_list.lock);
391 static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
393 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
394 struct sock *sk = sock->sk;
395 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
400 if (alen < sizeof(struct sockaddr_rc) ||
401 addr->sa_family != AF_BLUETOOTH)
406 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) {
411 if (sk->sk_type != SOCK_STREAM) {
416 sk->sk_state = BT_CONNECT;
417 bacpy(&bt_sk(sk)->dst, &sa->rc_bdaddr);
418 rfcomm_pi(sk)->channel = sa->rc_channel;
420 d->sec_level = rfcomm_pi(sk)->sec_level;
421 d->role_switch = rfcomm_pi(sk)->role_switch;
423 err = rfcomm_dlc_open(d, &bt_sk(sk)->src, &sa->rc_bdaddr, sa->rc_channel);
425 err = bt_sock_wait_state(sk, BT_CONNECTED,
426 sock_sndtimeo(sk, flags & O_NONBLOCK));
433 static int rfcomm_sock_listen(struct socket *sock, int backlog)
435 struct sock *sk = sock->sk;
438 BT_DBG("sk %p backlog %d", sk, backlog);
442 if (sk->sk_state != BT_BOUND) {
447 if (sk->sk_type != SOCK_STREAM) {
452 if (!rfcomm_pi(sk)->channel) {
453 bdaddr_t *src = &bt_sk(sk)->src;
458 write_lock(&rfcomm_sk_list.lock);
460 for (channel = 1; channel < 31; channel++)
461 if (!__rfcomm_get_sock_by_addr(channel, src)) {
462 rfcomm_pi(sk)->channel = channel;
467 write_unlock(&rfcomm_sk_list.lock);
473 sk->sk_max_ack_backlog = backlog;
474 sk->sk_ack_backlog = 0;
475 sk->sk_state = BT_LISTEN;
482 static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int flags)
484 DECLARE_WAITQUEUE(wait, current);
485 struct sock *sk = sock->sk, *nsk;
491 if (sk->sk_type != SOCK_STREAM) {
496 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
498 BT_DBG("sk %p timeo %ld", sk, timeo);
500 /* Wait for an incoming connection. (wake-one). */
501 add_wait_queue_exclusive(sk_sleep(sk), &wait);
503 set_current_state(TASK_INTERRUPTIBLE);
505 if (sk->sk_state != BT_LISTEN) {
510 nsk = bt_accept_dequeue(sk, newsock);
519 if (signal_pending(current)) {
520 err = sock_intr_errno(timeo);
525 timeo = schedule_timeout(timeo);
528 __set_current_state(TASK_RUNNING);
529 remove_wait_queue(sk_sleep(sk), &wait);
534 newsock->state = SS_CONNECTED;
536 BT_DBG("new socket %p", nsk);
543 static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
545 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
546 struct sock *sk = sock->sk;
548 BT_DBG("sock %p, sk %p", sock, sk);
550 sa->rc_family = AF_BLUETOOTH;
551 sa->rc_channel = rfcomm_pi(sk)->channel;
553 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->dst);
555 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->src);
557 *len = sizeof(struct sockaddr_rc);
561 static int rfcomm_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
562 struct msghdr *msg, size_t len)
564 struct sock *sk = sock->sk;
565 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
569 if (test_bit(RFCOMM_DEFER_SETUP, &d->flags))
572 if (msg->msg_flags & MSG_OOB)
575 if (sk->sk_shutdown & SEND_SHUTDOWN)
578 BT_DBG("sock %p, sk %p", sock, sk);
583 size_t size = min_t(size_t, len, d->mtu);
586 skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE,
587 msg->msg_flags & MSG_DONTWAIT, &err);
593 skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE);
595 err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
603 skb->priority = sk->sk_priority;
605 err = rfcomm_dlc_send(d, skb);
622 static int rfcomm_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
623 struct msghdr *msg, size_t size, int flags)
625 struct sock *sk = sock->sk;
626 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
629 if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) {
630 rfcomm_dlc_accept(d);
634 len = bt_sock_stream_recvmsg(iocb, sock, msg, size, flags);
637 if (!(flags & MSG_PEEK) && len > 0)
638 atomic_sub(len, &sk->sk_rmem_alloc);
640 if (atomic_read(&sk->sk_rmem_alloc) <= (sk->sk_rcvbuf >> 2))
641 rfcomm_dlc_unthrottle(rfcomm_pi(sk)->dlc);
647 static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen)
649 struct sock *sk = sock->sk;
659 if (get_user(opt, (u32 __user *) optval)) {
664 if (opt & RFCOMM_LM_AUTH)
665 rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW;
666 if (opt & RFCOMM_LM_ENCRYPT)
667 rfcomm_pi(sk)->sec_level = BT_SECURITY_MEDIUM;
668 if (opt & RFCOMM_LM_SECURE)
669 rfcomm_pi(sk)->sec_level = BT_SECURITY_HIGH;
671 rfcomm_pi(sk)->role_switch = (opt & RFCOMM_LM_MASTER);
683 static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
685 struct sock *sk = sock->sk;
686 struct bt_security sec;
693 if (level == SOL_RFCOMM)
694 return rfcomm_sock_setsockopt_old(sock, optname, optval, optlen);
696 if (level != SOL_BLUETOOTH)
703 if (sk->sk_type != SOCK_STREAM) {
708 sec.level = BT_SECURITY_LOW;
710 len = min_t(unsigned int, sizeof(sec), optlen);
711 if (copy_from_user((char *) &sec, optval, len)) {
716 if (sec.level > BT_SECURITY_HIGH) {
721 rfcomm_pi(sk)->sec_level = sec.level;
725 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
730 if (get_user(opt, (u32 __user *) optval)) {
736 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
738 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
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;
845 len = min_t(unsigned int, len, sizeof(sec));
846 if (copy_to_user(optval, (char *) &sec, len))
852 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
857 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
858 (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 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
916 static int rfcomm_sock_release(struct socket *sock)
918 struct sock *sk = sock->sk;
921 BT_DBG("sock %p, sk %p", sock, sk);
926 err = rfcomm_sock_shutdown(sock, 2);
929 rfcomm_sock_kill(sk);
933 /* ---- RFCOMM core layer callbacks ----
935 * called under rfcomm_lock()
937 int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d)
939 struct sock *sk, *parent;
943 BT_DBG("session %p channel %d", s, channel);
945 rfcomm_session_getaddr(s, &src, &dst);
947 /* Check if we have socket listening on channel */
948 parent = rfcomm_get_sock_by_channel(BT_LISTEN, channel, &src);
952 bh_lock_sock(parent);
954 /* Check for backlog size */
955 if (sk_acceptq_is_full(parent)) {
956 BT_DBG("backlog full %d", parent->sk_ack_backlog);
960 sk = rfcomm_sock_alloc(sock_net(parent), NULL, BTPROTO_RFCOMM, GFP_ATOMIC);
964 bt_sock_reclassify_lock(sk, BTPROTO_RFCOMM);
966 rfcomm_sock_init(sk, parent);
967 bacpy(&bt_sk(sk)->src, &src);
968 bacpy(&bt_sk(sk)->dst, &dst);
969 rfcomm_pi(sk)->channel = channel;
971 sk->sk_state = BT_CONFIG;
972 bt_accept_enqueue(parent, sk);
974 /* Accept connection and return socket DLC */
975 *d = rfcomm_pi(sk)->dlc;
979 bh_unlock_sock(parent);
981 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
982 parent->sk_state_change(parent);
987 static int rfcomm_sock_debugfs_show(struct seq_file *f, void *p)
990 struct hlist_node *node;
992 read_lock(&rfcomm_sk_list.lock);
994 sk_for_each(sk, node, &rfcomm_sk_list.head) {
995 seq_printf(f, "%s %s %d %d\n",
996 batostr(&bt_sk(sk)->src),
997 batostr(&bt_sk(sk)->dst),
998 sk->sk_state, rfcomm_pi(sk)->channel);
1001 read_unlock(&rfcomm_sk_list.lock);
1006 static int rfcomm_sock_debugfs_open(struct inode *inode, struct file *file)
1008 return single_open(file, rfcomm_sock_debugfs_show, inode->i_private);
1011 static const struct file_operations rfcomm_sock_debugfs_fops = {
1012 .open = rfcomm_sock_debugfs_open,
1014 .llseek = seq_lseek,
1015 .release = single_release,
1018 static struct dentry *rfcomm_sock_debugfs;
1020 static const struct proto_ops rfcomm_sock_ops = {
1021 .family = PF_BLUETOOTH,
1022 .owner = THIS_MODULE,
1023 .release = rfcomm_sock_release,
1024 .bind = rfcomm_sock_bind,
1025 .connect = rfcomm_sock_connect,
1026 .listen = rfcomm_sock_listen,
1027 .accept = rfcomm_sock_accept,
1028 .getname = rfcomm_sock_getname,
1029 .sendmsg = rfcomm_sock_sendmsg,
1030 .recvmsg = rfcomm_sock_recvmsg,
1031 .shutdown = rfcomm_sock_shutdown,
1032 .setsockopt = rfcomm_sock_setsockopt,
1033 .getsockopt = rfcomm_sock_getsockopt,
1034 .ioctl = rfcomm_sock_ioctl,
1035 .poll = bt_sock_poll,
1036 .socketpair = sock_no_socketpair,
1037 .mmap = sock_no_mmap
1040 static const struct net_proto_family rfcomm_sock_family_ops = {
1041 .family = PF_BLUETOOTH,
1042 .owner = THIS_MODULE,
1043 .create = rfcomm_sock_create
1046 int __init rfcomm_init_sockets(void)
1050 err = proto_register(&rfcomm_proto, 0);
1054 err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops);
1059 rfcomm_sock_debugfs = debugfs_create_file("rfcomm", 0444,
1060 bt_debugfs, NULL, &rfcomm_sock_debugfs_fops);
1061 if (!rfcomm_sock_debugfs)
1062 BT_ERR("Failed to create RFCOMM debug file");
1065 BT_INFO("RFCOMM socket layer initialized");
1070 BT_ERR("RFCOMM socket layer registration failed");
1071 proto_unregister(&rfcomm_proto);
1075 void __exit rfcomm_cleanup_sockets(void)
1077 debugfs_remove(rfcomm_sock_debugfs);
1079 if (bt_sock_unregister(BTPROTO_RFCOMM) < 0)
1080 BT_ERR("RFCOMM socket layer unregistration failed");
1082 proto_unregister(&rfcomm_proto);