2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation;
11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
22 SOFTWARE IS DISCLAIMED.
25 /* Bluetooth SCO sockets. */
27 #include <linux/module.h>
28 #include <linux/debugfs.h>
29 #include <linux/seq_file.h>
31 #include <net/bluetooth/bluetooth.h>
32 #include <net/bluetooth/hci_core.h>
33 #include <net/bluetooth/sco.h>
35 static bool disable_esco;
37 static const struct proto_ops sco_sock_ops;
39 static struct bt_sock_list sco_sk_list = {
40 .lock = __RW_LOCK_UNLOCKED(sco_sk_list.lock)
43 /* ---- SCO connections ---- */
45 struct hci_conn *hcon;
53 #define sco_conn_lock(c) spin_lock(&c->lock);
54 #define sco_conn_unlock(c) spin_unlock(&c->lock);
56 static void sco_sock_close(struct sock *sk);
57 static void sco_sock_kill(struct sock *sk);
59 /* ----- SCO socket info ----- */
60 #define sco_pi(sk) ((struct sco_pinfo *) sk)
68 struct sco_conn *conn;
71 /* ---- SCO timers ---- */
72 #define SCO_CONN_TIMEOUT (HZ * 40)
73 #define SCO_DISCONN_TIMEOUT (HZ * 2)
75 static void sco_sock_timeout(unsigned long arg)
77 struct sock *sk = (struct sock *) arg;
79 BT_DBG("sock %p state %d", sk, sk->sk_state);
82 sk->sk_err = ETIMEDOUT;
83 sk->sk_state_change(sk);
90 static void sco_sock_set_timer(struct sock *sk, long timeout)
92 BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout);
93 sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout);
96 static void sco_sock_clear_timer(struct sock *sk)
98 BT_DBG("sock %p state %d", sk, sk->sk_state);
99 sk_stop_timer(sk, &sk->sk_timer);
102 /* ---- SCO connections ---- */
103 static struct sco_conn *sco_conn_add(struct hci_conn *hcon)
105 struct hci_dev *hdev = hcon->hdev;
106 struct sco_conn *conn = hcon->sco_data;
111 conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL);
115 spin_lock_init(&conn->lock);
117 hcon->sco_data = conn;
120 if (hdev->sco_mtu > 0)
121 conn->mtu = hdev->sco_mtu;
125 BT_DBG("hcon %p conn %p", hcon, conn);
131 * Must be called on the locked socket. */
132 static void sco_chan_del(struct sock *sk, int err)
134 struct sco_conn *conn;
136 conn = sco_pi(sk)->conn;
138 BT_DBG("sk %p, conn %p, err %d", sk, conn, err);
143 sco_pi(sk)->conn = NULL;
144 sco_conn_unlock(conn);
147 hci_conn_drop(conn->hcon);
150 sk->sk_state = BT_CLOSED;
152 sk->sk_state_change(sk);
154 sock_set_flag(sk, SOCK_ZAPPED);
157 static void sco_conn_del(struct hci_conn *hcon, int err)
159 struct sco_conn *conn = hcon->sco_data;
165 BT_DBG("hcon %p conn %p, err %d", hcon, conn, err);
170 sco_conn_unlock(conn);
175 sco_sock_clear_timer(sk);
176 sco_chan_del(sk, err);
182 hcon->sco_data = NULL;
186 static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent)
188 BT_DBG("conn %p", conn);
190 sco_pi(sk)->conn = conn;
194 bt_accept_enqueue(parent, sk);
197 static int sco_chan_add(struct sco_conn *conn, struct sock *sk,
206 __sco_chan_add(conn, sk, parent);
208 sco_conn_unlock(conn);
212 static int sco_connect(struct sock *sk)
214 struct sco_conn *conn;
215 struct hci_conn *hcon;
216 struct hci_dev *hdev;
219 BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst);
221 hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src);
223 return -EHOSTUNREACH;
227 if (lmp_esco_capable(hdev) && !disable_esco)
232 if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT &&
233 (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) {
238 hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst,
239 sco_pi(sk)->setting);
245 conn = sco_conn_add(hcon);
252 /* Update source addr of the socket */
253 bacpy(&sco_pi(sk)->src, &hcon->src);
255 err = sco_chan_add(conn, sk, NULL);
259 if (hcon->state == BT_CONNECTED) {
260 sco_sock_clear_timer(sk);
261 sk->sk_state = BT_CONNECTED;
263 sk->sk_state = BT_CONNECT;
264 sco_sock_set_timer(sk, sk->sk_sndtimeo);
268 hci_dev_unlock(hdev);
273 static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len)
275 struct sco_conn *conn = sco_pi(sk)->conn;
279 /* Check outgoing MTU */
283 BT_DBG("sk %p len %d", sk, len);
285 skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err);
289 if (memcpy_from_msg(skb_put(skb, len), msg, len)) {
294 hci_send_sco(conn->hcon, skb);
299 static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb)
305 sco_conn_unlock(conn);
310 BT_DBG("sk %p len %d", sk, skb->len);
312 if (sk->sk_state != BT_CONNECTED)
315 if (!sock_queue_rcv_skb(sk, skb))
322 /* -------- Socket interface ---------- */
323 static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba)
327 sk_for_each(sk, &sco_sk_list.head) {
328 if (sk->sk_state != BT_LISTEN)
331 if (!bacmp(&sco_pi(sk)->src, ba))
338 /* Find socket listening on source bdaddr.
339 * Returns closest match.
341 static struct sock *sco_get_sock_listen(bdaddr_t *src)
343 struct sock *sk = NULL, *sk1 = NULL;
345 read_lock(&sco_sk_list.lock);
347 sk_for_each(sk, &sco_sk_list.head) {
348 if (sk->sk_state != BT_LISTEN)
352 if (!bacmp(&sco_pi(sk)->src, src))
356 if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY))
360 read_unlock(&sco_sk_list.lock);
362 return sk ? sk : sk1;
365 static void sco_sock_destruct(struct sock *sk)
369 skb_queue_purge(&sk->sk_receive_queue);
370 skb_queue_purge(&sk->sk_write_queue);
373 static void sco_sock_cleanup_listen(struct sock *parent)
377 BT_DBG("parent %p", parent);
379 /* Close not yet accepted channels */
380 while ((sk = bt_accept_dequeue(parent, NULL))) {
385 parent->sk_state = BT_CLOSED;
386 sock_set_flag(parent, SOCK_ZAPPED);
389 /* Kill socket (only if zapped and orphan)
390 * Must be called on unlocked socket.
392 static void sco_sock_kill(struct sock *sk)
394 if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
397 BT_DBG("sk %p state %d", sk, sk->sk_state);
399 /* Kill poor orphan */
400 bt_sock_unlink(&sco_sk_list, sk);
401 sock_set_flag(sk, SOCK_DEAD);
405 static void __sco_sock_close(struct sock *sk)
407 BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
409 switch (sk->sk_state) {
411 sco_sock_cleanup_listen(sk);
416 if (sco_pi(sk)->conn->hcon) {
417 sk->sk_state = BT_DISCONN;
418 sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT);
419 sco_conn_lock(sco_pi(sk)->conn);
420 hci_conn_drop(sco_pi(sk)->conn->hcon);
421 sco_pi(sk)->conn->hcon = NULL;
422 sco_conn_unlock(sco_pi(sk)->conn);
424 sco_chan_del(sk, ECONNRESET);
430 sco_chan_del(sk, ECONNRESET);
434 sock_set_flag(sk, SOCK_ZAPPED);
439 /* Must be called on unlocked socket. */
440 static void sco_sock_close(struct sock *sk)
442 sco_sock_clear_timer(sk);
444 __sco_sock_close(sk);
449 static void sco_sock_init(struct sock *sk, struct sock *parent)
454 sk->sk_type = parent->sk_type;
455 bt_sk(sk)->flags = bt_sk(parent)->flags;
456 security_sk_clone(parent, sk);
460 static struct proto sco_proto = {
462 .owner = THIS_MODULE,
463 .obj_size = sizeof(struct sco_pinfo)
466 static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio, int kern)
470 sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern);
474 sock_init_data(sock, sk);
475 INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
477 sk->sk_destruct = sco_sock_destruct;
478 sk->sk_sndtimeo = SCO_CONN_TIMEOUT;
480 sock_reset_flag(sk, SOCK_ZAPPED);
482 sk->sk_protocol = proto;
483 sk->sk_state = BT_OPEN;
485 sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT;
487 setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk);
489 bt_sock_link(&sco_sk_list, sk);
493 static int sco_sock_create(struct net *net, struct socket *sock, int protocol,
498 BT_DBG("sock %p", sock);
500 sock->state = SS_UNCONNECTED;
502 if (sock->type != SOCK_SEQPACKET)
503 return -ESOCKTNOSUPPORT;
505 sock->ops = &sco_sock_ops;
507 sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern);
511 sco_sock_init(sk, NULL);
515 static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
517 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
518 struct sock *sk = sock->sk;
521 BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr);
523 if (!addr || addr->sa_family != AF_BLUETOOTH)
528 if (sk->sk_state != BT_OPEN) {
533 if (sk->sk_type != SOCK_SEQPACKET) {
538 bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr);
540 sk->sk_state = BT_BOUND;
547 static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
549 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
550 struct sock *sk = sock->sk;
555 if (alen < sizeof(struct sockaddr_sco) ||
556 addr->sa_family != AF_BLUETOOTH)
559 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND)
562 if (sk->sk_type != SOCK_SEQPACKET)
567 /* Set destination address and psm */
568 bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr);
570 err = sco_connect(sk);
574 err = bt_sock_wait_state(sk, BT_CONNECTED,
575 sock_sndtimeo(sk, flags & O_NONBLOCK));
582 static int sco_sock_listen(struct socket *sock, int backlog)
584 struct sock *sk = sock->sk;
585 bdaddr_t *src = &sco_pi(sk)->src;
588 BT_DBG("sk %p backlog %d", sk, backlog);
592 if (sk->sk_state != BT_BOUND) {
597 if (sk->sk_type != SOCK_SEQPACKET) {
602 write_lock(&sco_sk_list.lock);
604 if (__sco_get_sock_listen_by_addr(src)) {
609 sk->sk_max_ack_backlog = backlog;
610 sk->sk_ack_backlog = 0;
612 sk->sk_state = BT_LISTEN;
615 write_unlock(&sco_sk_list.lock);
622 static int sco_sock_accept(struct socket *sock, struct socket *newsock, int flags)
624 DEFINE_WAIT_FUNC(wait, woken_wake_function);
625 struct sock *sk = sock->sk, *ch;
631 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
633 BT_DBG("sk %p timeo %ld", sk, timeo);
635 /* Wait for an incoming connection. (wake-one). */
636 add_wait_queue_exclusive(sk_sleep(sk), &wait);
638 if (sk->sk_state != BT_LISTEN) {
643 ch = bt_accept_dequeue(sk, newsock);
652 if (signal_pending(current)) {
653 err = sock_intr_errno(timeo);
659 timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo);
662 remove_wait_queue(sk_sleep(sk), &wait);
667 newsock->state = SS_CONNECTED;
669 BT_DBG("new socket %p", ch);
676 static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
678 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
679 struct sock *sk = sock->sk;
681 BT_DBG("sock %p, sk %p", sock, sk);
683 addr->sa_family = AF_BLUETOOTH;
684 *len = sizeof(struct sockaddr_sco);
687 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst);
689 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src);
694 static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg,
697 struct sock *sk = sock->sk;
700 BT_DBG("sock %p, sk %p", sock, sk);
702 err = sock_error(sk);
706 if (msg->msg_flags & MSG_OOB)
711 if (sk->sk_state == BT_CONNECTED)
712 err = sco_send_frame(sk, msg, len);
720 static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting)
722 struct hci_dev *hdev = conn->hdev;
724 BT_DBG("conn %p", conn);
726 conn->state = BT_CONFIG;
728 if (!lmp_esco_capable(hdev)) {
729 struct hci_cp_accept_conn_req cp;
731 bacpy(&cp.bdaddr, &conn->dst);
732 cp.role = 0x00; /* Ignored */
734 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
736 struct hci_cp_accept_sync_conn_req cp;
738 bacpy(&cp.bdaddr, &conn->dst);
739 cp.pkt_type = cpu_to_le16(conn->pkt_type);
741 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
742 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
743 cp.content_format = cpu_to_le16(setting);
745 switch (setting & SCO_AIRMODE_MASK) {
746 case SCO_AIRMODE_TRANSP:
747 if (conn->pkt_type & ESCO_2EV3)
748 cp.max_latency = cpu_to_le16(0x0008);
750 cp.max_latency = cpu_to_le16(0x000D);
751 cp.retrans_effort = 0x02;
753 case SCO_AIRMODE_CVSD:
754 cp.max_latency = cpu_to_le16(0xffff);
755 cp.retrans_effort = 0xff;
759 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
764 static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg,
765 size_t len, int flags)
767 struct sock *sk = sock->sk;
768 struct sco_pinfo *pi = sco_pi(sk);
772 if (sk->sk_state == BT_CONNECT2 &&
773 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
774 sco_conn_defer_accept(pi->conn->hcon, pi->setting);
775 sk->sk_state = BT_CONFIG;
783 return bt_sock_recvmsg(sock, msg, len, flags);
786 static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
788 struct sock *sk = sock->sk;
790 struct bt_voice voice;
800 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
805 if (get_user(opt, (u32 __user *) optval)) {
811 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
813 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
817 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND &&
818 sk->sk_state != BT_CONNECT2) {
823 voice.setting = sco_pi(sk)->setting;
825 len = min_t(unsigned int, sizeof(voice), optlen);
826 if (copy_from_user((char *) &voice, optval, len)) {
831 /* Explicitly check for these values */
832 if (voice.setting != BT_VOICE_TRANSPARENT &&
833 voice.setting != BT_VOICE_CVSD_16BIT) {
838 sco_pi(sk)->setting = voice.setting;
850 static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
852 struct sock *sk = sock->sk;
853 struct sco_options opts;
854 struct sco_conninfo cinfo;
859 if (get_user(len, optlen))
866 if (sk->sk_state != BT_CONNECTED &&
867 !(sk->sk_state == BT_CONNECT2 &&
868 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
873 opts.mtu = sco_pi(sk)->conn->mtu;
875 BT_DBG("mtu %d", opts.mtu);
877 len = min_t(unsigned int, len, sizeof(opts));
878 if (copy_to_user(optval, (char *)&opts, len))
884 if (sk->sk_state != BT_CONNECTED &&
885 !(sk->sk_state == BT_CONNECT2 &&
886 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
891 memset(&cinfo, 0, sizeof(cinfo));
892 cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle;
893 memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3);
895 len = min_t(unsigned int, len, sizeof(cinfo));
896 if (copy_to_user(optval, (char *)&cinfo, len))
910 static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
912 struct sock *sk = sock->sk;
914 struct bt_voice voice;
918 if (level == SOL_SCO)
919 return sco_sock_getsockopt_old(sock, optname, optval, optlen);
921 if (get_user(len, optlen))
929 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
934 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
935 (u32 __user *) optval))
941 voice.setting = sco_pi(sk)->setting;
943 len = min_t(unsigned int, len, sizeof(voice));
944 if (copy_to_user(optval, (char *)&voice, len))
958 static int sco_sock_shutdown(struct socket *sock, int how)
960 struct sock *sk = sock->sk;
963 BT_DBG("sock %p, sk %p", sock, sk);
971 if (!sk->sk_shutdown) {
972 sk->sk_shutdown = SHUTDOWN_MASK;
973 sco_sock_clear_timer(sk);
974 __sco_sock_close(sk);
976 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
977 !(current->flags & PF_EXITING))
978 err = bt_sock_wait_state(sk, BT_CLOSED,
988 static int sco_sock_release(struct socket *sock)
990 struct sock *sk = sock->sk;
993 BT_DBG("sock %p, sk %p", sock, sk);
1000 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
1001 !(current->flags & PF_EXITING)) {
1003 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
1012 static void sco_conn_ready(struct sco_conn *conn)
1014 struct sock *parent;
1015 struct sock *sk = conn->sk;
1017 BT_DBG("conn %p", conn);
1020 sco_sock_clear_timer(sk);
1022 sk->sk_state = BT_CONNECTED;
1023 sk->sk_state_change(sk);
1026 sco_conn_lock(conn);
1028 parent = sco_get_sock_listen(&conn->hcon->src);
1030 sco_conn_unlock(conn);
1034 bh_lock_sock(parent);
1036 sk = sco_sock_alloc(sock_net(parent), NULL,
1037 BTPROTO_SCO, GFP_ATOMIC, 0);
1039 bh_unlock_sock(parent);
1040 sco_conn_unlock(conn);
1044 sco_sock_init(sk, parent);
1046 bacpy(&sco_pi(sk)->src, &conn->hcon->src);
1047 bacpy(&sco_pi(sk)->dst, &conn->hcon->dst);
1049 hci_conn_hold(conn->hcon);
1050 __sco_chan_add(conn, sk, parent);
1052 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
1053 sk->sk_state = BT_CONNECT2;
1055 sk->sk_state = BT_CONNECTED;
1057 /* Wake up parent */
1058 parent->sk_data_ready(parent);
1060 bh_unlock_sock(parent);
1062 sco_conn_unlock(conn);
1066 /* ----- SCO interface with lower layer (HCI) ----- */
1067 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags)
1072 BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr);
1074 /* Find listening sockets */
1075 read_lock(&sco_sk_list.lock);
1076 sk_for_each(sk, &sco_sk_list.head) {
1077 if (sk->sk_state != BT_LISTEN)
1080 if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) ||
1081 !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) {
1082 lm |= HCI_LM_ACCEPT;
1084 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))
1085 *flags |= HCI_PROTO_DEFER;
1089 read_unlock(&sco_sk_list.lock);
1094 static void sco_connect_cfm(struct hci_conn *hcon, __u8 status)
1096 if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
1099 BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status);
1102 struct sco_conn *conn;
1104 conn = sco_conn_add(hcon);
1106 sco_conn_ready(conn);
1108 sco_conn_del(hcon, bt_to_errno(status));
1111 static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason)
1113 if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
1116 BT_DBG("hcon %p reason %d", hcon, reason);
1118 sco_conn_del(hcon, bt_to_errno(reason));
1121 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
1123 struct sco_conn *conn = hcon->sco_data;
1128 BT_DBG("conn %p len %d", conn, skb->len);
1131 sco_recv_frame(conn, skb);
1139 static struct hci_cb sco_cb = {
1141 .connect_cfm = sco_connect_cfm,
1142 .disconn_cfm = sco_disconn_cfm,
1145 static int sco_debugfs_show(struct seq_file *f, void *p)
1149 read_lock(&sco_sk_list.lock);
1151 sk_for_each(sk, &sco_sk_list.head) {
1152 seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src,
1153 &sco_pi(sk)->dst, sk->sk_state);
1156 read_unlock(&sco_sk_list.lock);
1161 static int sco_debugfs_open(struct inode *inode, struct file *file)
1163 return single_open(file, sco_debugfs_show, inode->i_private);
1166 static const struct file_operations sco_debugfs_fops = {
1167 .open = sco_debugfs_open,
1169 .llseek = seq_lseek,
1170 .release = single_release,
1173 static struct dentry *sco_debugfs;
1175 static const struct proto_ops sco_sock_ops = {
1176 .family = PF_BLUETOOTH,
1177 .owner = THIS_MODULE,
1178 .release = sco_sock_release,
1179 .bind = sco_sock_bind,
1180 .connect = sco_sock_connect,
1181 .listen = sco_sock_listen,
1182 .accept = sco_sock_accept,
1183 .getname = sco_sock_getname,
1184 .sendmsg = sco_sock_sendmsg,
1185 .recvmsg = sco_sock_recvmsg,
1186 .poll = bt_sock_poll,
1187 .ioctl = bt_sock_ioctl,
1188 .mmap = sock_no_mmap,
1189 .socketpair = sock_no_socketpair,
1190 .shutdown = sco_sock_shutdown,
1191 .setsockopt = sco_sock_setsockopt,
1192 .getsockopt = sco_sock_getsockopt
1195 static const struct net_proto_family sco_sock_family_ops = {
1196 .family = PF_BLUETOOTH,
1197 .owner = THIS_MODULE,
1198 .create = sco_sock_create,
1201 int __init sco_init(void)
1205 BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr));
1207 err = proto_register(&sco_proto, 0);
1211 err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops);
1213 BT_ERR("SCO socket registration failed");
1217 err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL);
1219 BT_ERR("Failed to create SCO proc file");
1220 bt_sock_unregister(BTPROTO_SCO);
1224 BT_INFO("SCO socket layer initialized");
1226 hci_register_cb(&sco_cb);
1228 if (IS_ERR_OR_NULL(bt_debugfs))
1231 sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs,
1232 NULL, &sco_debugfs_fops);
1237 proto_unregister(&sco_proto);
1243 bt_procfs_cleanup(&init_net, "sco");
1245 debugfs_remove(sco_debugfs);
1247 hci_unregister_cb(&sco_cb);
1249 bt_sock_unregister(BTPROTO_SCO);
1251 proto_unregister(&sco_proto);
1254 module_param(disable_esco, bool, 0644);
1255 MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation");