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.
27 #include <linux/compat.h>
28 #include <linux/export.h>
29 #include <linux/debugfs.h>
30 #include <linux/sched/signal.h>
32 #include <net/bluetooth/bluetooth.h>
33 #include <net/bluetooth/hci_core.h>
34 #include <net/bluetooth/l2cap.h>
35 #include <net/bluetooth/rfcomm.h>
37 static const struct proto_ops rfcomm_sock_ops;
39 static struct bt_sock_list rfcomm_sk_list = {
40 .lock = __RW_LOCK_UNLOCKED(rfcomm_sk_list.lock)
43 static void rfcomm_sock_close(struct sock *sk);
44 static void rfcomm_sock_kill(struct sock *sk);
46 /* ---- DLC callbacks ----
48 * called under rfcomm_dlc_lock()
50 static void rfcomm_sk_data_ready(struct rfcomm_dlc *d, struct sk_buff *skb)
52 struct sock *sk = d->owner;
56 atomic_add(skb->len, &sk->sk_rmem_alloc);
57 skb_queue_tail(&sk->sk_receive_queue, skb);
58 sk->sk_data_ready(sk);
60 if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf)
61 rfcomm_dlc_throttle(d);
64 static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err)
66 struct sock *sk = d->owner, *parent;
71 BT_DBG("dlc %p state %ld err %d", d, d->state, err);
78 sk->sk_state = d->state;
80 parent = bt_sk(sk)->parent;
82 if (d->state == BT_CLOSED) {
83 sock_set_flag(sk, SOCK_ZAPPED);
86 parent->sk_data_ready(parent);
88 if (d->state == BT_CONNECTED)
89 rfcomm_session_getaddr(d->session,
90 &rfcomm_pi(sk)->src, NULL);
91 sk->sk_state_change(sk);
96 if (parent && sock_flag(sk, SOCK_ZAPPED)) {
97 /* We have to drop DLC lock here, otherwise
98 * rfcomm_sock_destruct() will dead lock. */
100 rfcomm_sock_kill(sk);
105 /* ---- Socket functions ---- */
106 static struct sock *__rfcomm_get_listen_sock_by_addr(u8 channel, bdaddr_t *src)
108 struct sock *sk = NULL;
110 sk_for_each(sk, &rfcomm_sk_list.head) {
111 if (rfcomm_pi(sk)->channel != channel)
114 if (bacmp(&rfcomm_pi(sk)->src, src))
117 if (sk->sk_state == BT_BOUND || sk->sk_state == BT_LISTEN)
121 return sk ? sk : NULL;
124 /* Find socket with channel and source bdaddr.
125 * Returns closest match.
127 static struct sock *rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src)
129 struct sock *sk = NULL, *sk1 = NULL;
131 read_lock(&rfcomm_sk_list.lock);
133 sk_for_each(sk, &rfcomm_sk_list.head) {
134 if (state && sk->sk_state != state)
137 if (rfcomm_pi(sk)->channel == channel) {
139 if (!bacmp(&rfcomm_pi(sk)->src, src))
143 if (!bacmp(&rfcomm_pi(sk)->src, BDADDR_ANY))
148 read_unlock(&rfcomm_sk_list.lock);
150 return sk ? sk : sk1;
153 static void rfcomm_sock_destruct(struct sock *sk)
155 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
157 BT_DBG("sk %p dlc %p", sk, d);
159 skb_queue_purge(&sk->sk_receive_queue);
160 skb_queue_purge(&sk->sk_write_queue);
163 rfcomm_pi(sk)->dlc = NULL;
165 /* Detach DLC if it's owned by this socket */
168 rfcomm_dlc_unlock(d);
173 static void rfcomm_sock_cleanup_listen(struct sock *parent)
177 BT_DBG("parent %p", parent);
179 /* Close not yet accepted dlcs */
180 while ((sk = bt_accept_dequeue(parent, NULL))) {
181 rfcomm_sock_close(sk);
182 rfcomm_sock_kill(sk);
185 parent->sk_state = BT_CLOSED;
186 sock_set_flag(parent, SOCK_ZAPPED);
189 /* Kill socket (only if zapped and orphan)
190 * Must be called on unlocked socket.
192 static void rfcomm_sock_kill(struct sock *sk)
194 if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
197 BT_DBG("sk %p state %d refcnt %d", sk, sk->sk_state, refcount_read(&sk->sk_refcnt));
199 /* Kill poor orphan */
200 bt_sock_unlink(&rfcomm_sk_list, sk);
201 sock_set_flag(sk, SOCK_DEAD);
205 static void __rfcomm_sock_close(struct sock *sk)
207 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
209 BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
211 switch (sk->sk_state) {
213 rfcomm_sock_cleanup_listen(sk);
220 rfcomm_dlc_close(d, 0);
224 sock_set_flag(sk, SOCK_ZAPPED);
230 * Must be called on unlocked socket.
232 static void rfcomm_sock_close(struct sock *sk)
235 __rfcomm_sock_close(sk);
239 static void rfcomm_sock_init(struct sock *sk, struct sock *parent)
241 struct rfcomm_pinfo *pi = rfcomm_pi(sk);
246 sk->sk_type = parent->sk_type;
247 pi->dlc->defer_setup = test_bit(BT_SK_DEFER_SETUP,
248 &bt_sk(parent)->flags);
250 pi->sec_level = rfcomm_pi(parent)->sec_level;
251 pi->role_switch = rfcomm_pi(parent)->role_switch;
253 security_sk_clone(parent, sk);
255 pi->dlc->defer_setup = 0;
257 pi->sec_level = BT_SECURITY_LOW;
261 pi->dlc->sec_level = pi->sec_level;
262 pi->dlc->role_switch = pi->role_switch;
265 static struct proto rfcomm_proto = {
267 .owner = THIS_MODULE,
268 .obj_size = sizeof(struct rfcomm_pinfo)
271 static struct sock *rfcomm_sock_alloc(struct net *net, struct socket *sock,
272 int proto, gfp_t prio, int kern)
274 struct rfcomm_dlc *d;
277 sk = bt_sock_alloc(net, sock, &rfcomm_proto, proto, prio, kern);
281 d = rfcomm_dlc_alloc(prio);
287 d->data_ready = rfcomm_sk_data_ready;
288 d->state_change = rfcomm_sk_state_change;
290 rfcomm_pi(sk)->dlc = d;
293 sk->sk_destruct = rfcomm_sock_destruct;
294 sk->sk_sndtimeo = RFCOMM_CONN_TIMEOUT;
296 sk->sk_sndbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10;
297 sk->sk_rcvbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10;
299 bt_sock_link(&rfcomm_sk_list, sk);
305 static int rfcomm_sock_create(struct net *net, struct socket *sock,
306 int protocol, int kern)
310 BT_DBG("sock %p", sock);
312 sock->state = SS_UNCONNECTED;
314 if (sock->type != SOCK_STREAM && sock->type != SOCK_RAW)
315 return -ESOCKTNOSUPPORT;
317 sock->ops = &rfcomm_sock_ops;
319 sk = rfcomm_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern);
323 rfcomm_sock_init(sk, NULL);
327 static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
329 struct sockaddr_rc sa;
330 struct sock *sk = sock->sk;
333 if (!addr || addr_len < offsetofend(struct sockaddr, sa_family) ||
334 addr->sa_family != AF_BLUETOOTH)
337 memset(&sa, 0, sizeof(sa));
338 len = min_t(unsigned int, sizeof(sa), addr_len);
339 memcpy(&sa, addr, len);
341 BT_DBG("sk %p %pMR", sk, &sa.rc_bdaddr);
345 if (sk->sk_state != BT_OPEN) {
350 if (sk->sk_type != SOCK_STREAM) {
355 write_lock(&rfcomm_sk_list.lock);
358 __rfcomm_get_listen_sock_by_addr(sa.rc_channel, &sa.rc_bdaddr)) {
361 /* Save source address */
362 bacpy(&rfcomm_pi(sk)->src, &sa.rc_bdaddr);
363 rfcomm_pi(sk)->channel = sa.rc_channel;
364 sk->sk_state = BT_BOUND;
367 write_unlock(&rfcomm_sk_list.lock);
374 static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
376 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
377 struct sock *sk = sock->sk;
378 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
383 if (alen < sizeof(struct sockaddr_rc) ||
384 addr->sa_family != AF_BLUETOOTH)
390 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) {
395 if (sk->sk_type != SOCK_STREAM) {
400 sk->sk_state = BT_CONNECT;
401 bacpy(&rfcomm_pi(sk)->dst, &sa->rc_bdaddr);
402 rfcomm_pi(sk)->channel = sa->rc_channel;
404 d->sec_level = rfcomm_pi(sk)->sec_level;
405 d->role_switch = rfcomm_pi(sk)->role_switch;
407 /* Drop sock lock to avoid potential deadlock with the RFCOMM lock */
409 err = rfcomm_dlc_open(d, &rfcomm_pi(sk)->src, &sa->rc_bdaddr,
412 if (!err && !sock_flag(sk, SOCK_ZAPPED))
413 err = bt_sock_wait_state(sk, BT_CONNECTED,
414 sock_sndtimeo(sk, flags & O_NONBLOCK));
422 static int rfcomm_sock_listen(struct socket *sock, int backlog)
424 struct sock *sk = sock->sk;
427 BT_DBG("sk %p backlog %d", sk, backlog);
431 if (sk->sk_state != BT_BOUND) {
436 if (sk->sk_type != SOCK_STREAM) {
441 if (!rfcomm_pi(sk)->channel) {
442 bdaddr_t *src = &rfcomm_pi(sk)->src;
447 write_lock(&rfcomm_sk_list.lock);
449 for (channel = 1; channel < 31; channel++)
450 if (!__rfcomm_get_listen_sock_by_addr(channel, src)) {
451 rfcomm_pi(sk)->channel = channel;
456 write_unlock(&rfcomm_sk_list.lock);
462 sk->sk_max_ack_backlog = backlog;
463 sk->sk_ack_backlog = 0;
464 sk->sk_state = BT_LISTEN;
471 static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int flags,
474 DEFINE_WAIT_FUNC(wait, woken_wake_function);
475 struct sock *sk = sock->sk, *nsk;
479 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
481 if (sk->sk_type != SOCK_STREAM) {
486 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
488 BT_DBG("sk %p timeo %ld", sk, timeo);
490 /* Wait for an incoming connection. (wake-one). */
491 add_wait_queue_exclusive(sk_sleep(sk), &wait);
493 if (sk->sk_state != BT_LISTEN) {
498 nsk = bt_accept_dequeue(sk, newsock);
507 if (signal_pending(current)) {
508 err = sock_intr_errno(timeo);
514 timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo);
516 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
518 remove_wait_queue(sk_sleep(sk), &wait);
523 newsock->state = SS_CONNECTED;
525 BT_DBG("new socket %p", nsk);
532 static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int peer)
534 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
535 struct sock *sk = sock->sk;
537 BT_DBG("sock %p, sk %p", sock, sk);
539 if (peer && sk->sk_state != BT_CONNECTED &&
540 sk->sk_state != BT_CONNECT && sk->sk_state != BT_CONNECT2)
543 memset(sa, 0, sizeof(*sa));
544 sa->rc_family = AF_BLUETOOTH;
545 sa->rc_channel = rfcomm_pi(sk)->channel;
547 bacpy(&sa->rc_bdaddr, &rfcomm_pi(sk)->dst);
549 bacpy(&sa->rc_bdaddr, &rfcomm_pi(sk)->src);
551 return sizeof(struct sockaddr_rc);
554 static int rfcomm_sock_sendmsg(struct socket *sock, struct msghdr *msg,
557 struct sock *sk = sock->sk;
558 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
562 if (test_bit(RFCOMM_DEFER_SETUP, &d->flags))
565 if (msg->msg_flags & MSG_OOB)
568 if (sk->sk_shutdown & SEND_SHUTDOWN)
571 BT_DBG("sock %p, sk %p", sock, sk);
575 sent = bt_sock_wait_ready(sk, msg->msg_flags);
582 skb = bt_skb_sendmmsg(sk, msg, len, d->mtu, RFCOMM_SKB_HEAD_RESERVE,
583 RFCOMM_SKB_TAIL_RESERVE);
587 sent = rfcomm_dlc_send(d, skb);
594 static int rfcomm_sock_recvmsg(struct socket *sock, struct msghdr *msg,
595 size_t size, int flags)
597 struct sock *sk = sock->sk;
598 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
601 if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) {
602 rfcomm_dlc_accept(d);
606 len = bt_sock_stream_recvmsg(sock, msg, size, flags);
609 if (!(flags & MSG_PEEK) && len > 0)
610 atomic_sub(len, &sk->sk_rmem_alloc);
612 if (atomic_read(&sk->sk_rmem_alloc) <= (sk->sk_rcvbuf >> 2))
613 rfcomm_dlc_unthrottle(rfcomm_pi(sk)->dlc);
619 static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname,
620 sockptr_t optval, unsigned int optlen)
622 struct sock *sk = sock->sk;
632 if (copy_from_sockptr(&opt, optval, sizeof(u32))) {
637 if (opt & RFCOMM_LM_FIPS) {
642 if (opt & RFCOMM_LM_AUTH)
643 rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW;
644 if (opt & RFCOMM_LM_ENCRYPT)
645 rfcomm_pi(sk)->sec_level = BT_SECURITY_MEDIUM;
646 if (opt & RFCOMM_LM_SECURE)
647 rfcomm_pi(sk)->sec_level = BT_SECURITY_HIGH;
649 rfcomm_pi(sk)->role_switch = (opt & RFCOMM_LM_MASTER);
661 static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname,
662 sockptr_t optval, unsigned int optlen)
664 struct sock *sk = sock->sk;
665 struct bt_security sec;
672 if (level == SOL_RFCOMM)
673 return rfcomm_sock_setsockopt_old(sock, optname, optval, optlen);
675 if (level != SOL_BLUETOOTH)
682 if (sk->sk_type != SOCK_STREAM) {
687 sec.level = BT_SECURITY_LOW;
689 len = min_t(unsigned int, sizeof(sec), optlen);
690 if (copy_from_sockptr(&sec, optval, len)) {
695 if (sec.level > BT_SECURITY_HIGH) {
700 rfcomm_pi(sk)->sec_level = sec.level;
704 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
709 if (copy_from_sockptr(&opt, optval, sizeof(u32))) {
715 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
717 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
730 static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
732 struct sock *sk = sock->sk;
733 struct sock *l2cap_sk;
734 struct l2cap_conn *conn;
735 struct rfcomm_conninfo cinfo;
741 if (get_user(len, optlen))
748 switch (rfcomm_pi(sk)->sec_level) {
749 case BT_SECURITY_LOW:
750 opt = RFCOMM_LM_AUTH;
752 case BT_SECURITY_MEDIUM:
753 opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT;
755 case BT_SECURITY_HIGH:
756 opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT |
759 case BT_SECURITY_FIPS:
760 opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT |
761 RFCOMM_LM_SECURE | RFCOMM_LM_FIPS;
768 if (rfcomm_pi(sk)->role_switch)
769 opt |= RFCOMM_LM_MASTER;
771 if (put_user(opt, (u32 __user *) optval))
776 case RFCOMM_CONNINFO:
777 if (sk->sk_state != BT_CONNECTED &&
778 !rfcomm_pi(sk)->dlc->defer_setup) {
783 l2cap_sk = rfcomm_pi(sk)->dlc->session->sock->sk;
784 conn = l2cap_pi(l2cap_sk)->chan->conn;
786 memset(&cinfo, 0, sizeof(cinfo));
787 cinfo.hci_handle = conn->hcon->handle;
788 memcpy(cinfo.dev_class, conn->hcon->dev_class, 3);
790 len = min_t(unsigned int, len, sizeof(cinfo));
791 if (copy_to_user(optval, (char *) &cinfo, len))
805 static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
807 struct sock *sk = sock->sk;
808 struct bt_security sec;
813 if (level == SOL_RFCOMM)
814 return rfcomm_sock_getsockopt_old(sock, optname, optval, optlen);
816 if (level != SOL_BLUETOOTH)
819 if (get_user(len, optlen))
826 if (sk->sk_type != SOCK_STREAM) {
831 sec.level = rfcomm_pi(sk)->sec_level;
834 len = min_t(unsigned int, len, sizeof(sec));
835 if (copy_to_user(optval, (char *) &sec, len))
841 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
846 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
847 (u32 __user *) optval))
861 static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
863 struct sock *sk __maybe_unused = sock->sk;
866 BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg);
868 err = bt_sock_ioctl(sock, cmd, arg);
870 if (err == -ENOIOCTLCMD) {
871 #ifdef CONFIG_BT_RFCOMM_TTY
873 err = rfcomm_dev_ioctl(sk, cmd, (void __user *) arg);
884 static int rfcomm_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
886 return rfcomm_sock_ioctl(sock, cmd, (unsigned long)compat_ptr(arg));
890 static int rfcomm_sock_shutdown(struct socket *sock, int how)
892 struct sock *sk = sock->sk;
895 BT_DBG("sock %p, sk %p", sock, sk);
901 if (!sk->sk_shutdown) {
902 sk->sk_shutdown = SHUTDOWN_MASK;
905 __rfcomm_sock_close(sk);
908 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
909 !(current->flags & PF_EXITING))
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);
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, 0);
964 bt_sock_reclassify_lock(sk, BTPROTO_RFCOMM);
966 rfcomm_sock_init(sk, parent);
967 bacpy(&rfcomm_pi(sk)->src, &src);
968 bacpy(&rfcomm_pi(sk)->dst, &dst);
969 rfcomm_pi(sk)->channel = channel;
971 sk->sk_state = BT_CONFIG;
972 bt_accept_enqueue(parent, sk, true);
974 /* Accept connection and return socket DLC */
975 *d = rfcomm_pi(sk)->dlc;
979 release_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)
991 read_lock(&rfcomm_sk_list.lock);
993 sk_for_each(sk, &rfcomm_sk_list.head) {
994 seq_printf(f, "%pMR %pMR %d %d\n",
995 &rfcomm_pi(sk)->src, &rfcomm_pi(sk)->dst,
996 sk->sk_state, rfcomm_pi(sk)->channel);
999 read_unlock(&rfcomm_sk_list.lock);
1004 DEFINE_SHOW_ATTRIBUTE(rfcomm_sock_debugfs);
1006 static struct dentry *rfcomm_sock_debugfs;
1008 static const struct proto_ops rfcomm_sock_ops = {
1009 .family = PF_BLUETOOTH,
1010 .owner = THIS_MODULE,
1011 .release = rfcomm_sock_release,
1012 .bind = rfcomm_sock_bind,
1013 .connect = rfcomm_sock_connect,
1014 .listen = rfcomm_sock_listen,
1015 .accept = rfcomm_sock_accept,
1016 .getname = rfcomm_sock_getname,
1017 .sendmsg = rfcomm_sock_sendmsg,
1018 .recvmsg = rfcomm_sock_recvmsg,
1019 .shutdown = rfcomm_sock_shutdown,
1020 .setsockopt = rfcomm_sock_setsockopt,
1021 .getsockopt = rfcomm_sock_getsockopt,
1022 .ioctl = rfcomm_sock_ioctl,
1023 .gettstamp = sock_gettstamp,
1024 .poll = bt_sock_poll,
1025 .socketpair = sock_no_socketpair,
1026 .mmap = sock_no_mmap,
1027 #ifdef CONFIG_COMPAT
1028 .compat_ioctl = rfcomm_sock_compat_ioctl,
1032 static const struct net_proto_family rfcomm_sock_family_ops = {
1033 .family = PF_BLUETOOTH,
1034 .owner = THIS_MODULE,
1035 .create = rfcomm_sock_create
1038 int __init rfcomm_init_sockets(void)
1042 BUILD_BUG_ON(sizeof(struct sockaddr_rc) > sizeof(struct sockaddr));
1044 err = proto_register(&rfcomm_proto, 0);
1048 err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops);
1050 BT_ERR("RFCOMM socket layer registration failed");
1054 err = bt_procfs_init(&init_net, "rfcomm", &rfcomm_sk_list, NULL);
1056 BT_ERR("Failed to create RFCOMM proc file");
1057 bt_sock_unregister(BTPROTO_RFCOMM);
1061 BT_INFO("RFCOMM socket layer initialized");
1063 if (IS_ERR_OR_NULL(bt_debugfs))
1066 rfcomm_sock_debugfs = debugfs_create_file("rfcomm", 0444,
1068 &rfcomm_sock_debugfs_fops);
1073 proto_unregister(&rfcomm_proto);
1077 void __exit rfcomm_cleanup_sockets(void)
1079 bt_procfs_cleanup(&init_net, "rfcomm");
1081 debugfs_remove(rfcomm_sock_debugfs);
1083 bt_sock_unregister(BTPROTO_RFCOMM);
1085 proto_unregister(&rfcomm_proto);