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 = bt_sk(parent)->defer_setup;
265 pi->sec_level = rfcomm_pi(parent)->sec_level;
266 pi->role_switch = rfcomm_pi(parent)->role_switch;
268 security_sk_clone(parent, sk);
270 pi->dlc->defer_setup = 0;
272 pi->sec_level = BT_SECURITY_LOW;
276 pi->dlc->sec_level = pi->sec_level;
277 pi->dlc->role_switch = pi->role_switch;
280 static struct proto rfcomm_proto = {
282 .owner = THIS_MODULE,
283 .obj_size = sizeof(struct rfcomm_pinfo)
286 static struct sock *rfcomm_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio)
288 struct rfcomm_dlc *d;
291 sk = sk_alloc(net, PF_BLUETOOTH, prio, &rfcomm_proto);
295 sock_init_data(sock, sk);
296 INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
298 d = rfcomm_dlc_alloc(prio);
304 d->data_ready = rfcomm_sk_data_ready;
305 d->state_change = rfcomm_sk_state_change;
307 rfcomm_pi(sk)->dlc = d;
310 sk->sk_destruct = rfcomm_sock_destruct;
311 sk->sk_sndtimeo = RFCOMM_CONN_TIMEOUT;
313 sk->sk_sndbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10;
314 sk->sk_rcvbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10;
316 sock_reset_flag(sk, SOCK_ZAPPED);
318 sk->sk_protocol = proto;
319 sk->sk_state = BT_OPEN;
321 bt_sock_link(&rfcomm_sk_list, sk);
327 static int rfcomm_sock_create(struct net *net, struct socket *sock,
328 int protocol, int kern)
332 BT_DBG("sock %p", sock);
334 sock->state = SS_UNCONNECTED;
336 if (sock->type != SOCK_STREAM && sock->type != SOCK_RAW)
337 return -ESOCKTNOSUPPORT;
339 sock->ops = &rfcomm_sock_ops;
341 sk = rfcomm_sock_alloc(net, sock, protocol, GFP_ATOMIC);
345 rfcomm_sock_init(sk, NULL);
349 static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
351 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
352 struct sock *sk = sock->sk;
355 BT_DBG("sk %p %s", sk, batostr(&sa->rc_bdaddr));
357 if (!addr || addr->sa_family != AF_BLUETOOTH)
362 if (sk->sk_state != BT_OPEN) {
367 if (sk->sk_type != SOCK_STREAM) {
372 write_lock(&rfcomm_sk_list.lock);
374 if (sa->rc_channel && __rfcomm_get_sock_by_addr(sa->rc_channel, &sa->rc_bdaddr)) {
377 /* Save source address */
378 bacpy(&bt_sk(sk)->src, &sa->rc_bdaddr);
379 rfcomm_pi(sk)->channel = sa->rc_channel;
380 sk->sk_state = BT_BOUND;
383 write_unlock(&rfcomm_sk_list.lock);
390 static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
392 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
393 struct sock *sk = sock->sk;
394 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
399 if (alen < sizeof(struct sockaddr_rc) ||
400 addr->sa_family != AF_BLUETOOTH)
405 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) {
410 if (sk->sk_type != SOCK_STREAM) {
415 sk->sk_state = BT_CONNECT;
416 bacpy(&bt_sk(sk)->dst, &sa->rc_bdaddr);
417 rfcomm_pi(sk)->channel = sa->rc_channel;
419 d->sec_level = rfcomm_pi(sk)->sec_level;
420 d->role_switch = rfcomm_pi(sk)->role_switch;
422 err = rfcomm_dlc_open(d, &bt_sk(sk)->src, &sa->rc_bdaddr, sa->rc_channel);
424 err = bt_sock_wait_state(sk, BT_CONNECTED,
425 sock_sndtimeo(sk, flags & O_NONBLOCK));
432 static int rfcomm_sock_listen(struct socket *sock, int backlog)
434 struct sock *sk = sock->sk;
437 BT_DBG("sk %p backlog %d", sk, backlog);
441 if (sk->sk_state != BT_BOUND) {
446 if (sk->sk_type != SOCK_STREAM) {
451 if (!rfcomm_pi(sk)->channel) {
452 bdaddr_t *src = &bt_sk(sk)->src;
457 write_lock(&rfcomm_sk_list.lock);
459 for (channel = 1; channel < 31; channel++)
460 if (!__rfcomm_get_sock_by_addr(channel, src)) {
461 rfcomm_pi(sk)->channel = channel;
466 write_unlock(&rfcomm_sk_list.lock);
472 sk->sk_max_ack_backlog = backlog;
473 sk->sk_ack_backlog = 0;
474 sk->sk_state = BT_LISTEN;
481 static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int flags)
483 DECLARE_WAITQUEUE(wait, current);
484 struct sock *sk = sock->sk, *nsk;
490 if (sk->sk_type != SOCK_STREAM) {
495 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
497 BT_DBG("sk %p timeo %ld", sk, timeo);
499 /* Wait for an incoming connection. (wake-one). */
500 add_wait_queue_exclusive(sk_sleep(sk), &wait);
502 set_current_state(TASK_INTERRUPTIBLE);
504 if (sk->sk_state != BT_LISTEN) {
509 nsk = bt_accept_dequeue(sk, newsock);
518 if (signal_pending(current)) {
519 err = sock_intr_errno(timeo);
524 timeo = schedule_timeout(timeo);
527 __set_current_state(TASK_RUNNING);
528 remove_wait_queue(sk_sleep(sk), &wait);
533 newsock->state = SS_CONNECTED;
535 BT_DBG("new socket %p", nsk);
542 static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
544 struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
545 struct sock *sk = sock->sk;
547 BT_DBG("sock %p, sk %p", sock, sk);
549 sa->rc_family = AF_BLUETOOTH;
550 sa->rc_channel = rfcomm_pi(sk)->channel;
552 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->dst);
554 bacpy(&sa->rc_bdaddr, &bt_sk(sk)->src);
556 *len = sizeof(struct sockaddr_rc);
560 static int rfcomm_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
561 struct msghdr *msg, size_t len)
563 struct sock *sk = sock->sk;
564 struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
568 if (test_bit(RFCOMM_DEFER_SETUP, &d->flags))
571 if (msg->msg_flags & MSG_OOB)
574 if (sk->sk_shutdown & SEND_SHUTDOWN)
577 BT_DBG("sock %p, sk %p", sock, sk);
582 size_t size = min_t(size_t, len, d->mtu);
585 skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE,
586 msg->msg_flags & MSG_DONTWAIT, &err);
592 skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE);
594 err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
602 skb->priority = sk->sk_priority;
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;
840 len = min_t(unsigned int, len, sizeof(sec));
841 if (copy_to_user(optval, (char *) &sec, len))
847 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
852 if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval))
866 static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
868 struct sock *sk __maybe_unused = sock->sk;
871 BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg);
873 err = bt_sock_ioctl(sock, cmd, arg);
875 if (err == -ENOIOCTLCMD) {
876 #ifdef CONFIG_BT_RFCOMM_TTY
878 err = rfcomm_dev_ioctl(sk, cmd, (void __user *) arg);
888 static int rfcomm_sock_shutdown(struct socket *sock, int how)
890 struct sock *sk = sock->sk;
893 BT_DBG("sock %p, sk %p", sock, sk);
899 if (!sk->sk_shutdown) {
900 sk->sk_shutdown = SHUTDOWN_MASK;
901 __rfcomm_sock_close(sk);
903 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
904 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
910 static int rfcomm_sock_release(struct socket *sock)
912 struct sock *sk = sock->sk;
915 BT_DBG("sock %p, sk %p", sock, sk);
920 err = rfcomm_sock_shutdown(sock, 2);
923 rfcomm_sock_kill(sk);
927 /* ---- RFCOMM core layer callbacks ----
929 * called under rfcomm_lock()
931 int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d)
933 struct sock *sk, *parent;
937 BT_DBG("session %p channel %d", s, channel);
939 rfcomm_session_getaddr(s, &src, &dst);
941 /* Check if we have socket listening on channel */
942 parent = rfcomm_get_sock_by_channel(BT_LISTEN, channel, &src);
946 bh_lock_sock(parent);
948 /* Check for backlog size */
949 if (sk_acceptq_is_full(parent)) {
950 BT_DBG("backlog full %d", parent->sk_ack_backlog);
954 sk = rfcomm_sock_alloc(sock_net(parent), NULL, BTPROTO_RFCOMM, GFP_ATOMIC);
958 bt_sock_reclassify_lock(sk, BTPROTO_RFCOMM);
960 rfcomm_sock_init(sk, parent);
961 bacpy(&bt_sk(sk)->src, &src);
962 bacpy(&bt_sk(sk)->dst, &dst);
963 rfcomm_pi(sk)->channel = channel;
965 sk->sk_state = BT_CONFIG;
966 bt_accept_enqueue(parent, sk);
968 /* Accept connection and return socket DLC */
969 *d = rfcomm_pi(sk)->dlc;
973 bh_unlock_sock(parent);
975 if (bt_sk(parent)->defer_setup)
976 parent->sk_state_change(parent);
981 static int rfcomm_sock_debugfs_show(struct seq_file *f, void *p)
984 struct hlist_node *node;
986 read_lock(&rfcomm_sk_list.lock);
988 sk_for_each(sk, node, &rfcomm_sk_list.head) {
989 seq_printf(f, "%s %s %d %d\n",
990 batostr(&bt_sk(sk)->src),
991 batostr(&bt_sk(sk)->dst),
992 sk->sk_state, rfcomm_pi(sk)->channel);
995 read_unlock(&rfcomm_sk_list.lock);
1000 static int rfcomm_sock_debugfs_open(struct inode *inode, struct file *file)
1002 return single_open(file, rfcomm_sock_debugfs_show, inode->i_private);
1005 static const struct file_operations rfcomm_sock_debugfs_fops = {
1006 .open = rfcomm_sock_debugfs_open,
1008 .llseek = seq_lseek,
1009 .release = single_release,
1012 static struct dentry *rfcomm_sock_debugfs;
1014 static const struct proto_ops rfcomm_sock_ops = {
1015 .family = PF_BLUETOOTH,
1016 .owner = THIS_MODULE,
1017 .release = rfcomm_sock_release,
1018 .bind = rfcomm_sock_bind,
1019 .connect = rfcomm_sock_connect,
1020 .listen = rfcomm_sock_listen,
1021 .accept = rfcomm_sock_accept,
1022 .getname = rfcomm_sock_getname,
1023 .sendmsg = rfcomm_sock_sendmsg,
1024 .recvmsg = rfcomm_sock_recvmsg,
1025 .shutdown = rfcomm_sock_shutdown,
1026 .setsockopt = rfcomm_sock_setsockopt,
1027 .getsockopt = rfcomm_sock_getsockopt,
1028 .ioctl = rfcomm_sock_ioctl,
1029 .poll = bt_sock_poll,
1030 .socketpair = sock_no_socketpair,
1031 .mmap = sock_no_mmap
1034 static const struct net_proto_family rfcomm_sock_family_ops = {
1035 .family = PF_BLUETOOTH,
1036 .owner = THIS_MODULE,
1037 .create = rfcomm_sock_create
1040 int __init rfcomm_init_sockets(void)
1044 err = proto_register(&rfcomm_proto, 0);
1048 err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops);
1053 rfcomm_sock_debugfs = debugfs_create_file("rfcomm", 0444,
1054 bt_debugfs, NULL, &rfcomm_sock_debugfs_fops);
1055 if (!rfcomm_sock_debugfs)
1056 BT_ERR("Failed to create RFCOMM debug file");
1059 BT_INFO("RFCOMM socket layer initialized");
1064 BT_ERR("RFCOMM socket layer registration failed");
1065 proto_unregister(&rfcomm_proto);
1069 void __exit rfcomm_cleanup_sockets(void)
1071 debugfs_remove(rfcomm_sock_debugfs);
1073 if (bt_sock_unregister(BTPROTO_RFCOMM) < 0)
1074 BT_ERR("RFCOMM socket layer unregistration failed");
1076 proto_unregister(&rfcomm_proto);