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 = (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_bh(&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_bh(&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_bh(&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_bh(&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;
489 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
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);
526 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
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 memset(sa, 0, sizeof(*sa));
551 sa->rc_family = AF_BLUETOOTH;
552 sa->rc_channel = rfcomm_pi(sk)->channel;
554 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->dst);
556 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->src);
558 *len = sizeof(struct sockaddr_rc);
562 static int rfcomm_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
563 struct msghdr *msg, size_t len)
565 struct sock *sk = sock->sk;
566 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
570 if (test_bit(RFCOMM_DEFER_SETUP, &d->flags))
573 if (msg->msg_flags & MSG_OOB)
576 if (sk->sk_shutdown & SEND_SHUTDOWN)
579 BT_DBG("sock %p, sk %p", sock, sk);
584 size_t size = min_t(size_t, len, d->mtu);
587 skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE,
588 msg->msg_flags & MSG_DONTWAIT, &err);
594 skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE);
596 err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
604 err = rfcomm_dlc_send(d, skb);
621 static int rfcomm_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
622 struct msghdr *msg, size_t size, int flags)
624 struct sock *sk = sock->sk;
625 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
628 if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) {
629 rfcomm_dlc_accept(d);
633 len = bt_sock_stream_recvmsg(iocb, sock, msg, size, flags);
636 if (!(flags & MSG_PEEK) && len > 0)
637 atomic_sub(len, &sk->sk_rmem_alloc);
639 if (atomic_read(&sk->sk_rmem_alloc) <= (sk->sk_rcvbuf >> 2))
640 rfcomm_dlc_unthrottle(rfcomm_pi(sk)->dlc);
646 static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen)
648 struct sock *sk = sock->sk;
658 if (get_user(opt, (u32 __user *) optval)) {
663 if (opt & RFCOMM_LM_AUTH)
664 rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW;
665 if (opt & RFCOMM_LM_ENCRYPT)
666 rfcomm_pi(sk)->sec_level = BT_SECURITY_MEDIUM;
667 if (opt & RFCOMM_LM_SECURE)
668 rfcomm_pi(sk)->sec_level = BT_SECURITY_HIGH;
670 rfcomm_pi(sk)->role_switch = (opt & RFCOMM_LM_MASTER);
682 static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
684 struct sock *sk = sock->sk;
685 struct bt_security sec;
692 if (level == SOL_RFCOMM)
693 return rfcomm_sock_setsockopt_old(sock, optname, optval, optlen);
695 if (level != SOL_BLUETOOTH)
702 if (sk->sk_type != SOCK_STREAM) {
707 sec.level = BT_SECURITY_LOW;
709 len = min_t(unsigned int, sizeof(sec), optlen);
710 if (copy_from_user((char *) &sec, optval, len)) {
715 if (sec.level > BT_SECURITY_HIGH) {
720 rfcomm_pi(sk)->sec_level = sec.level;
724 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
729 if (get_user(opt, (u32 __user *) optval)) {
734 bt_sk(sk)->defer_setup = opt;
746 static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
748 struct sock *sk = sock->sk;
749 struct rfcomm_conninfo cinfo;
750 struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn;
756 if (get_user(len, optlen))
763 switch (rfcomm_pi(sk)->sec_level) {
764 case BT_SECURITY_LOW:
765 opt = RFCOMM_LM_AUTH;
767 case BT_SECURITY_MEDIUM:
768 opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT;
770 case BT_SECURITY_HIGH:
771 opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT |
779 if (rfcomm_pi(sk)->role_switch)
780 opt |= RFCOMM_LM_MASTER;
782 if (put_user(opt, (u32 __user *) optval))
786 case RFCOMM_CONNINFO:
787 if (sk->sk_state != BT_CONNECTED &&
788 !rfcomm_pi(sk)->dlc->defer_setup) {
793 memset(&cinfo, 0, sizeof(cinfo));
794 cinfo.hci_handle = conn->hcon->handle;
795 memcpy(cinfo.dev_class, conn->hcon->dev_class, 3);
797 len = min_t(unsigned int, len, sizeof(cinfo));
798 if (copy_to_user(optval, (char *) &cinfo, len))
812 static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
814 struct sock *sk = sock->sk;
815 struct bt_security sec;
820 if (level == SOL_RFCOMM)
821 return rfcomm_sock_getsockopt_old(sock, optname, optval, optlen);
823 if (level != SOL_BLUETOOTH)
826 if (get_user(len, optlen))
833 if (sk->sk_type != SOCK_STREAM) {
838 sec.level = rfcomm_pi(sk)->sec_level;
841 len = min_t(unsigned int, len, sizeof(sec));
842 if (copy_to_user(optval, (char *) &sec, len))
848 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
853 if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval))
867 static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
869 struct sock *sk __maybe_unused = sock->sk;
872 BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg);
874 err = bt_sock_ioctl(sock, cmd, arg);
876 if (err == -ENOIOCTLCMD) {
877 #ifdef CONFIG_BT_RFCOMM_TTY
879 err = rfcomm_dev_ioctl(sk, cmd, (void __user *) arg);
889 static int rfcomm_sock_shutdown(struct socket *sock, int how)
891 struct sock *sk = sock->sk;
894 BT_DBG("sock %p, sk %p", sock, sk);
900 if (!sk->sk_shutdown) {
901 sk->sk_shutdown = SHUTDOWN_MASK;
902 __rfcomm_sock_close(sk);
904 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
905 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
911 static int rfcomm_sock_release(struct socket *sock)
913 struct sock *sk = sock->sk;
916 BT_DBG("sock %p, sk %p", sock, sk);
921 err = rfcomm_sock_shutdown(sock, 2);
924 rfcomm_sock_kill(sk);
928 /* ---- RFCOMM core layer callbacks ----
930 * called under rfcomm_lock()
932 int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d)
934 struct sock *sk, *parent;
938 BT_DBG("session %p channel %d", s, channel);
940 rfcomm_session_getaddr(s, &src, &dst);
942 /* Check if we have socket listening on channel */
943 parent = rfcomm_get_sock_by_channel(BT_LISTEN, channel, &src);
947 bh_lock_sock(parent);
949 /* Check for backlog size */
950 if (sk_acceptq_is_full(parent)) {
951 BT_DBG("backlog full %d", parent->sk_ack_backlog);
955 sk = rfcomm_sock_alloc(sock_net(parent), NULL, BTPROTO_RFCOMM, GFP_ATOMIC);
959 rfcomm_sock_init(sk, parent);
960 bacpy(&bt_sk(sk)->src, &src);
961 bacpy(&bt_sk(sk)->dst, &dst);
962 rfcomm_pi(sk)->channel = channel;
964 sk->sk_state = BT_CONFIG;
965 bt_accept_enqueue(parent, sk);
967 /* Accept connection and return socket DLC */
968 *d = rfcomm_pi(sk)->dlc;
972 bh_unlock_sock(parent);
974 if (bt_sk(parent)->defer_setup)
975 parent->sk_state_change(parent);
980 static int rfcomm_sock_debugfs_show(struct seq_file *f, void *p)
983 struct hlist_node *node;
985 read_lock_bh(&rfcomm_sk_list.lock);
987 sk_for_each(sk, node, &rfcomm_sk_list.head) {
988 seq_printf(f, "%s %s %d %d\n",
989 batostr(&bt_sk(sk)->src),
990 batostr(&bt_sk(sk)->dst),
991 sk->sk_state, rfcomm_pi(sk)->channel);
994 read_unlock_bh(&rfcomm_sk_list.lock);
999 static int rfcomm_sock_debugfs_open(struct inode *inode, struct file *file)
1001 return single_open(file, rfcomm_sock_debugfs_show, inode->i_private);
1004 static const struct file_operations rfcomm_sock_debugfs_fops = {
1005 .open = rfcomm_sock_debugfs_open,
1007 .llseek = seq_lseek,
1008 .release = single_release,
1011 static struct dentry *rfcomm_sock_debugfs;
1013 static const struct proto_ops rfcomm_sock_ops = {
1014 .family = PF_BLUETOOTH,
1015 .owner = THIS_MODULE,
1016 .release = rfcomm_sock_release,
1017 .bind = rfcomm_sock_bind,
1018 .connect = rfcomm_sock_connect,
1019 .listen = rfcomm_sock_listen,
1020 .accept = rfcomm_sock_accept,
1021 .getname = rfcomm_sock_getname,
1022 .sendmsg = rfcomm_sock_sendmsg,
1023 .recvmsg = rfcomm_sock_recvmsg,
1024 .shutdown = rfcomm_sock_shutdown,
1025 .setsockopt = rfcomm_sock_setsockopt,
1026 .getsockopt = rfcomm_sock_getsockopt,
1027 .ioctl = rfcomm_sock_ioctl,
1028 .poll = bt_sock_poll,
1029 .socketpair = sock_no_socketpair,
1030 .mmap = sock_no_mmap
1033 static const struct net_proto_family rfcomm_sock_family_ops = {
1034 .family = PF_BLUETOOTH,
1035 .owner = THIS_MODULE,
1036 .create = rfcomm_sock_create
1039 int __init rfcomm_init_sockets(void)
1043 err = proto_register(&rfcomm_proto, 0);
1047 err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops);
1052 rfcomm_sock_debugfs = debugfs_create_file("rfcomm", 0444,
1053 bt_debugfs, NULL, &rfcomm_sock_debugfs_fops);
1054 if (!rfcomm_sock_debugfs)
1055 BT_ERR("Failed to create RFCOMM debug file");
1058 BT_INFO("RFCOMM socket layer initialized");
1063 BT_ERR("RFCOMM socket layer registration failed");
1064 proto_unregister(&rfcomm_proto);
1068 void __exit rfcomm_cleanup_sockets(void)
1070 debugfs_remove(rfcomm_sock_debugfs);
1072 if (bt_sock_unregister(BTPROTO_RFCOMM) < 0)
1073 BT_ERR("RFCOMM socket layer unregistration failed");
1075 proto_unregister(&rfcomm_proto);