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 %pMR", sk, &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;
470 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
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);
507 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
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 memset(sa, 0, sizeof(*sa));
532 sa->rc_family = AF_BLUETOOTH;
533 sa->rc_channel = rfcomm_pi(sk)->channel;
535 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->dst);
537 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->src);
539 *len = sizeof(struct sockaddr_rc);
543 static int rfcomm_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
544 struct msghdr *msg, size_t len)
546 struct sock *sk = sock->sk;
547 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
551 if (test_bit(RFCOMM_DEFER_SETUP, &d->flags))
554 if (msg->msg_flags & MSG_OOB)
557 if (sk->sk_shutdown & SEND_SHUTDOWN)
560 BT_DBG("sock %p, sk %p", sock, sk);
565 size_t size = min_t(size_t, len, d->mtu);
568 skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE,
569 msg->msg_flags & MSG_DONTWAIT, &err);
575 skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE);
577 err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
585 skb->priority = sk->sk_priority;
587 err = rfcomm_dlc_send(d, skb);
604 static int rfcomm_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
605 struct msghdr *msg, size_t size, int flags)
607 struct sock *sk = sock->sk;
608 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
611 if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) {
612 rfcomm_dlc_accept(d);
616 len = bt_sock_stream_recvmsg(iocb, sock, msg, size, flags);
619 if (!(flags & MSG_PEEK) && len > 0)
620 atomic_sub(len, &sk->sk_rmem_alloc);
622 if (atomic_read(&sk->sk_rmem_alloc) <= (sk->sk_rcvbuf >> 2))
623 rfcomm_dlc_unthrottle(rfcomm_pi(sk)->dlc);
629 static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen)
631 struct sock *sk = sock->sk;
641 if (get_user(opt, (u32 __user *) optval)) {
646 if (opt & RFCOMM_LM_AUTH)
647 rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW;
648 if (opt & RFCOMM_LM_ENCRYPT)
649 rfcomm_pi(sk)->sec_level = BT_SECURITY_MEDIUM;
650 if (opt & RFCOMM_LM_SECURE)
651 rfcomm_pi(sk)->sec_level = BT_SECURITY_HIGH;
653 rfcomm_pi(sk)->role_switch = (opt & RFCOMM_LM_MASTER);
665 static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
667 struct sock *sk = sock->sk;
668 struct bt_security sec;
675 if (level == SOL_RFCOMM)
676 return rfcomm_sock_setsockopt_old(sock, optname, optval, optlen);
678 if (level != SOL_BLUETOOTH)
685 if (sk->sk_type != SOCK_STREAM) {
690 sec.level = BT_SECURITY_LOW;
692 len = min_t(unsigned int, sizeof(sec), optlen);
693 if (copy_from_user((char *) &sec, optval, len)) {
698 if (sec.level > BT_SECURITY_HIGH) {
703 rfcomm_pi(sk)->sec_level = sec.level;
707 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
712 if (get_user(opt, (u32 __user *) optval)) {
718 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
720 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
733 static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
735 struct sock *sk = sock->sk;
736 struct rfcomm_conninfo cinfo;
737 struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn;
743 if (get_user(len, optlen))
750 switch (rfcomm_pi(sk)->sec_level) {
751 case BT_SECURITY_LOW:
752 opt = RFCOMM_LM_AUTH;
754 case BT_SECURITY_MEDIUM:
755 opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT;
757 case BT_SECURITY_HIGH:
758 opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT |
766 if (rfcomm_pi(sk)->role_switch)
767 opt |= RFCOMM_LM_MASTER;
769 if (put_user(opt, (u32 __user *) optval))
773 case RFCOMM_CONNINFO:
774 if (sk->sk_state != BT_CONNECTED &&
775 !rfcomm_pi(sk)->dlc->defer_setup) {
780 memset(&cinfo, 0, sizeof(cinfo));
781 cinfo.hci_handle = conn->hcon->handle;
782 memcpy(cinfo.dev_class, conn->hcon->dev_class, 3);
784 len = min_t(unsigned int, len, sizeof(cinfo));
785 if (copy_to_user(optval, (char *) &cinfo, len))
799 static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
801 struct sock *sk = sock->sk;
802 struct bt_security sec;
807 if (level == SOL_RFCOMM)
808 return rfcomm_sock_getsockopt_old(sock, optname, optval, optlen);
810 if (level != SOL_BLUETOOTH)
813 if (get_user(len, optlen))
820 if (sk->sk_type != SOCK_STREAM) {
825 sec.level = rfcomm_pi(sk)->sec_level;
828 len = min_t(unsigned int, len, sizeof(sec));
829 if (copy_to_user(optval, (char *) &sec, len))
835 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
840 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
841 (u32 __user *) optval))
855 static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
857 struct sock *sk __maybe_unused = sock->sk;
860 BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg);
862 err = bt_sock_ioctl(sock, cmd, arg);
864 if (err == -ENOIOCTLCMD) {
865 #ifdef CONFIG_BT_RFCOMM_TTY
867 err = rfcomm_dev_ioctl(sk, cmd, (void __user *) arg);
877 static int rfcomm_sock_shutdown(struct socket *sock, int how)
879 struct sock *sk = sock->sk;
882 BT_DBG("sock %p, sk %p", sock, sk);
888 if (!sk->sk_shutdown) {
889 sk->sk_shutdown = SHUTDOWN_MASK;
890 __rfcomm_sock_close(sk);
892 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
893 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
899 static int rfcomm_sock_release(struct socket *sock)
901 struct sock *sk = sock->sk;
904 BT_DBG("sock %p, sk %p", sock, sk);
909 err = rfcomm_sock_shutdown(sock, 2);
912 rfcomm_sock_kill(sk);
916 /* ---- RFCOMM core layer callbacks ----
918 * called under rfcomm_lock()
920 int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d)
922 struct sock *sk, *parent;
926 BT_DBG("session %p channel %d", s, channel);
928 rfcomm_session_getaddr(s, &src, &dst);
930 /* Check if we have socket listening on channel */
931 parent = rfcomm_get_sock_by_channel(BT_LISTEN, channel, &src);
935 bh_lock_sock(parent);
937 /* Check for backlog size */
938 if (sk_acceptq_is_full(parent)) {
939 BT_DBG("backlog full %d", parent->sk_ack_backlog);
943 sk = rfcomm_sock_alloc(sock_net(parent), NULL, BTPROTO_RFCOMM, GFP_ATOMIC);
947 bt_sock_reclassify_lock(sk, BTPROTO_RFCOMM);
949 rfcomm_sock_init(sk, parent);
950 bacpy(&bt_sk(sk)->src, &src);
951 bacpy(&bt_sk(sk)->dst, &dst);
952 rfcomm_pi(sk)->channel = channel;
954 sk->sk_state = BT_CONFIG;
955 bt_accept_enqueue(parent, sk);
957 /* Accept connection and return socket DLC */
958 *d = rfcomm_pi(sk)->dlc;
962 bh_unlock_sock(parent);
964 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
965 parent->sk_state_change(parent);
970 static int rfcomm_sock_debugfs_show(struct seq_file *f, void *p)
973 struct hlist_node *node;
975 read_lock(&rfcomm_sk_list.lock);
977 sk_for_each(sk, node, &rfcomm_sk_list.head) {
978 seq_printf(f, "%pMR %pMR %d %d\n",
979 &bt_sk(sk)->src, &bt_sk(sk)->dst,
980 sk->sk_state, rfcomm_pi(sk)->channel);
983 read_unlock(&rfcomm_sk_list.lock);
988 static int rfcomm_sock_debugfs_open(struct inode *inode, struct file *file)
990 return single_open(file, rfcomm_sock_debugfs_show, inode->i_private);
993 static const struct file_operations rfcomm_sock_debugfs_fops = {
994 .open = rfcomm_sock_debugfs_open,
997 .release = single_release,
1000 static struct dentry *rfcomm_sock_debugfs;
1002 static const struct proto_ops rfcomm_sock_ops = {
1003 .family = PF_BLUETOOTH,
1004 .owner = THIS_MODULE,
1005 .release = rfcomm_sock_release,
1006 .bind = rfcomm_sock_bind,
1007 .connect = rfcomm_sock_connect,
1008 .listen = rfcomm_sock_listen,
1009 .accept = rfcomm_sock_accept,
1010 .getname = rfcomm_sock_getname,
1011 .sendmsg = rfcomm_sock_sendmsg,
1012 .recvmsg = rfcomm_sock_recvmsg,
1013 .shutdown = rfcomm_sock_shutdown,
1014 .setsockopt = rfcomm_sock_setsockopt,
1015 .getsockopt = rfcomm_sock_getsockopt,
1016 .ioctl = rfcomm_sock_ioctl,
1017 .poll = bt_sock_poll,
1018 .socketpair = sock_no_socketpair,
1019 .mmap = sock_no_mmap
1022 static const struct net_proto_family rfcomm_sock_family_ops = {
1023 .family = PF_BLUETOOTH,
1024 .owner = THIS_MODULE,
1025 .create = rfcomm_sock_create
1028 int __init rfcomm_init_sockets(void)
1032 err = proto_register(&rfcomm_proto, 0);
1036 err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops);
1038 BT_ERR("RFCOMM socket layer registration failed");
1042 err = bt_procfs_init(THIS_MODULE, &init_net, "rfcomm", &rfcomm_sk_list, NULL);
1044 BT_ERR("Failed to create RFCOMM proc file");
1045 bt_sock_unregister(BTPROTO_RFCOMM);
1050 rfcomm_sock_debugfs = debugfs_create_file("rfcomm", 0444,
1051 bt_debugfs, NULL, &rfcomm_sock_debugfs_fops);
1052 if (!rfcomm_sock_debugfs)
1053 BT_ERR("Failed to create RFCOMM debug file");
1056 BT_INFO("RFCOMM socket layer initialized");
1061 proto_unregister(&rfcomm_proto);
1065 void __exit rfcomm_cleanup_sockets(void)
1067 bt_procfs_cleanup(&init_net, "rfcomm");
1069 debugfs_remove(rfcomm_sock_debugfs);
1071 if (bt_sock_unregister(BTPROTO_RFCOMM) < 0)
1072 BT_ERR("RFCOMM socket layer unregistration failed");
1074 proto_unregister(&rfcomm_proto);