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);
89 static void sco_sock_set_timer(struct sock *sk, long timeout)
91 BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout);
92 sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout);
95 static void sco_sock_clear_timer(struct sock *sk)
97 BT_DBG("sock %p state %d", sk, sk->sk_state);
98 sk_stop_timer(sk, &sk->sk_timer);
101 /* ---- SCO connections ---- */
102 static struct sco_conn *sco_conn_add(struct hci_conn *hcon)
104 struct hci_dev *hdev = hcon->hdev;
105 struct sco_conn *conn = hcon->sco_data;
110 conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL);
114 spin_lock_init(&conn->lock);
116 hcon->sco_data = conn;
119 if (hdev->sco_mtu > 0)
120 conn->mtu = hdev->sco_mtu;
124 BT_DBG("hcon %p conn %p", hcon, conn);
130 * Must be called on the locked socket. */
131 static void sco_chan_del(struct sock *sk, int err)
133 struct sco_conn *conn;
135 conn = sco_pi(sk)->conn;
137 BT_DBG("sk %p, conn %p, err %d", sk, conn, err);
142 sco_pi(sk)->conn = NULL;
143 sco_conn_unlock(conn);
146 hci_conn_drop(conn->hcon);
149 sk->sk_state = BT_CLOSED;
151 sk->sk_state_change(sk);
153 sock_set_flag(sk, SOCK_ZAPPED);
156 static void sco_conn_del(struct hci_conn *hcon, int err)
158 struct sco_conn *conn = hcon->sco_data;
164 BT_DBG("hcon %p conn %p, err %d", hcon, conn, err);
169 sco_conn_unlock(conn);
174 sco_sock_clear_timer(sk);
175 sco_chan_del(sk, err);
180 hcon->sco_data = NULL;
184 static void __sco_chan_add(struct sco_conn *conn, struct sock *sk,
187 BT_DBG("conn %p", conn);
189 sco_pi(sk)->conn = conn;
193 bt_accept_enqueue(parent, sk);
196 static int sco_chan_add(struct sco_conn *conn, struct sock *sk,
205 __sco_chan_add(conn, sk, parent);
207 sco_conn_unlock(conn);
211 static int sco_connect(struct sock *sk)
213 struct sco_conn *conn;
214 struct hci_conn *hcon;
215 struct hci_dev *hdev;
218 BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst);
220 hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src);
222 return -EHOSTUNREACH;
226 if (lmp_esco_capable(hdev) && !disable_esco)
231 if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT &&
232 (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) {
237 hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst,
238 sco_pi(sk)->setting);
244 conn = sco_conn_add(hcon);
251 /* Update source addr of the socket */
252 bacpy(&sco_pi(sk)->src, &hcon->src);
254 err = sco_chan_add(conn, sk, NULL);
258 if (hcon->state == BT_CONNECTED) {
259 sco_sock_clear_timer(sk);
260 sk->sk_state = BT_CONNECTED;
262 sk->sk_state = BT_CONNECT;
263 sco_sock_set_timer(sk, sk->sk_sndtimeo);
267 hci_dev_unlock(hdev);
272 static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len)
274 struct sco_conn *conn = sco_pi(sk)->conn;
278 /* Check outgoing MTU */
282 BT_DBG("sk %p len %d", sk, len);
284 skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err);
288 if (memcpy_from_msg(skb_put(skb, len), msg, len)) {
293 hci_send_sco(conn->hcon, skb);
298 static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb)
304 sco_conn_unlock(conn);
309 BT_DBG("sk %p len %d", sk, skb->len);
311 if (sk->sk_state != BT_CONNECTED)
314 if (!sock_queue_rcv_skb(sk, skb))
321 /* -------- Socket interface ---------- */
322 static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba)
326 sk_for_each(sk, &sco_sk_list.head) {
327 if (sk->sk_state != BT_LISTEN)
330 if (!bacmp(&sco_pi(sk)->src, ba))
337 /* Find socket listening on source bdaddr.
338 * Returns closest match.
340 static struct sock *sco_get_sock_listen(bdaddr_t *src)
342 struct sock *sk = NULL, *sk1 = NULL;
344 read_lock(&sco_sk_list.lock);
346 sk_for_each(sk, &sco_sk_list.head) {
347 if (sk->sk_state != BT_LISTEN)
351 if (!bacmp(&sco_pi(sk)->src, src))
355 if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY))
359 read_unlock(&sco_sk_list.lock);
361 return sk ? sk : sk1;
364 static void sco_sock_destruct(struct sock *sk)
368 skb_queue_purge(&sk->sk_receive_queue);
369 skb_queue_purge(&sk->sk_write_queue);
372 static void sco_sock_cleanup_listen(struct sock *parent)
376 BT_DBG("parent %p", parent);
378 /* Close not yet accepted channels */
379 while ((sk = bt_accept_dequeue(parent, NULL))) {
384 parent->sk_state = BT_CLOSED;
385 sock_set_flag(parent, SOCK_ZAPPED);
388 /* Kill socket (only if zapped and orphan)
389 * Must be called on unlocked socket.
391 static void sco_sock_kill(struct sock *sk)
393 if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
396 BT_DBG("sk %p state %d", sk, sk->sk_state);
398 /* Kill poor orphan */
399 bt_sock_unlink(&sco_sk_list, sk);
400 sock_set_flag(sk, SOCK_DEAD);
404 static void __sco_sock_close(struct sock *sk)
406 BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
408 switch (sk->sk_state) {
410 sco_sock_cleanup_listen(sk);
415 if (sco_pi(sk)->conn->hcon) {
416 sk->sk_state = BT_DISCONN;
417 sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT);
418 sco_conn_lock(sco_pi(sk)->conn);
419 hci_conn_drop(sco_pi(sk)->conn->hcon);
420 sco_pi(sk)->conn->hcon = NULL;
421 sco_conn_unlock(sco_pi(sk)->conn);
423 sco_chan_del(sk, ECONNRESET);
429 sco_chan_del(sk, ECONNRESET);
433 sock_set_flag(sk, SOCK_ZAPPED);
438 /* Must be called on unlocked socket. */
439 static void sco_sock_close(struct sock *sk)
441 sco_sock_clear_timer(sk);
443 __sco_sock_close(sk);
447 static void sco_sock_init(struct sock *sk, struct sock *parent)
452 sk->sk_type = parent->sk_type;
453 bt_sk(sk)->flags = bt_sk(parent)->flags;
454 security_sk_clone(parent, sk);
458 static struct proto sco_proto = {
460 .owner = THIS_MODULE,
461 .obj_size = sizeof(struct sco_pinfo)
464 static struct sock *sco_sock_alloc(struct net *net, struct socket *sock,
465 int proto, gfp_t prio, int kern)
469 sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern);
473 sock_init_data(sock, sk);
474 INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
476 sk->sk_destruct = sco_sock_destruct;
477 sk->sk_sndtimeo = SCO_CONN_TIMEOUT;
479 sock_reset_flag(sk, SOCK_ZAPPED);
481 sk->sk_protocol = proto;
482 sk->sk_state = BT_OPEN;
484 sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT;
486 setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk);
488 bt_sock_link(&sco_sk_list, sk);
492 static int sco_sock_create(struct net *net, struct socket *sock, int protocol,
497 BT_DBG("sock %p", sock);
499 sock->state = SS_UNCONNECTED;
501 if (sock->type != SOCK_SEQPACKET)
502 return -ESOCKTNOSUPPORT;
504 sock->ops = &sco_sock_ops;
506 sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern);
510 sco_sock_init(sk, NULL);
514 static int sco_sock_bind(struct socket *sock, struct sockaddr *addr,
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)
526 if (addr_len < sizeof(struct sockaddr_sco))
531 if (sk->sk_state != BT_OPEN) {
536 if (sk->sk_type != SOCK_SEQPACKET) {
541 bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr);
543 sk->sk_state = BT_BOUND;
550 static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
552 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
553 struct sock *sk = sock->sk;
558 if (alen < sizeof(struct sockaddr_sco) ||
559 addr->sa_family != AF_BLUETOOTH)
562 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND)
565 if (sk->sk_type != SOCK_SEQPACKET)
570 /* Set destination address and psm */
571 bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr);
573 err = sco_connect(sk);
577 err = bt_sock_wait_state(sk, BT_CONNECTED,
578 sock_sndtimeo(sk, flags & O_NONBLOCK));
585 static int sco_sock_listen(struct socket *sock, int backlog)
587 struct sock *sk = sock->sk;
588 bdaddr_t *src = &sco_pi(sk)->src;
591 BT_DBG("sk %p backlog %d", sk, backlog);
595 if (sk->sk_state != BT_BOUND) {
600 if (sk->sk_type != SOCK_SEQPACKET) {
605 write_lock(&sco_sk_list.lock);
607 if (__sco_get_sock_listen_by_addr(src)) {
612 sk->sk_max_ack_backlog = backlog;
613 sk->sk_ack_backlog = 0;
615 sk->sk_state = BT_LISTEN;
618 write_unlock(&sco_sk_list.lock);
625 static int sco_sock_accept(struct socket *sock, struct socket *newsock,
628 DEFINE_WAIT_FUNC(wait, woken_wake_function);
629 struct sock *sk = sock->sk, *ch;
635 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
637 BT_DBG("sk %p timeo %ld", sk, timeo);
639 /* Wait for an incoming connection. (wake-one). */
640 add_wait_queue_exclusive(sk_sleep(sk), &wait);
642 if (sk->sk_state != BT_LISTEN) {
647 ch = bt_accept_dequeue(sk, newsock);
656 if (signal_pending(current)) {
657 err = sock_intr_errno(timeo);
663 timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo);
666 remove_wait_queue(sk_sleep(sk), &wait);
671 newsock->state = SS_CONNECTED;
673 BT_DBG("new socket %p", ch);
680 static int sco_sock_getname(struct socket *sock, struct sockaddr *addr,
683 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
684 struct sock *sk = sock->sk;
686 BT_DBG("sock %p, sk %p", sock, sk);
688 addr->sa_family = AF_BLUETOOTH;
689 *len = sizeof(struct sockaddr_sco);
692 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst);
694 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src);
699 static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg,
702 struct sock *sk = sock->sk;
705 BT_DBG("sock %p, sk %p", sock, sk);
707 err = sock_error(sk);
711 if (msg->msg_flags & MSG_OOB)
716 if (sk->sk_state == BT_CONNECTED)
717 err = sco_send_frame(sk, msg, len);
725 static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting)
727 struct hci_dev *hdev = conn->hdev;
729 BT_DBG("conn %p", conn);
731 conn->state = BT_CONFIG;
733 if (!lmp_esco_capable(hdev)) {
734 struct hci_cp_accept_conn_req cp;
736 bacpy(&cp.bdaddr, &conn->dst);
737 cp.role = 0x00; /* Ignored */
739 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
741 struct hci_cp_accept_sync_conn_req cp;
743 bacpy(&cp.bdaddr, &conn->dst);
744 cp.pkt_type = cpu_to_le16(conn->pkt_type);
746 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
747 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
748 cp.content_format = cpu_to_le16(setting);
750 switch (setting & SCO_AIRMODE_MASK) {
751 case SCO_AIRMODE_TRANSP:
752 if (conn->pkt_type & ESCO_2EV3)
753 cp.max_latency = cpu_to_le16(0x0008);
755 cp.max_latency = cpu_to_le16(0x000D);
756 cp.retrans_effort = 0x02;
758 case SCO_AIRMODE_CVSD:
759 cp.max_latency = cpu_to_le16(0xffff);
760 cp.retrans_effort = 0xff;
763 /* use CVSD settings as fallback */
764 cp.max_latency = cpu_to_le16(0xffff);
765 cp.retrans_effort = 0xff;
769 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
774 static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg,
775 size_t len, int flags)
777 struct sock *sk = sock->sk;
778 struct sco_pinfo *pi = sco_pi(sk);
782 if (sk->sk_state == BT_CONNECT2 &&
783 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
784 sco_conn_defer_accept(pi->conn->hcon, pi->setting);
785 sk->sk_state = BT_CONFIG;
793 return bt_sock_recvmsg(sock, msg, len, flags);
796 static int sco_sock_setsockopt(struct socket *sock, int level, int optname,
797 char __user *optval, unsigned int optlen)
799 struct sock *sk = sock->sk;
801 struct bt_voice voice;
811 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
816 if (get_user(opt, (u32 __user *) optval)) {
822 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
824 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
828 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND &&
829 sk->sk_state != BT_CONNECT2) {
834 voice.setting = sco_pi(sk)->setting;
836 len = min_t(unsigned int, sizeof(voice), optlen);
837 if (copy_from_user((char *)&voice, optval, len)) {
842 /* Explicitly check for these values */
843 if (voice.setting != BT_VOICE_TRANSPARENT &&
844 voice.setting != BT_VOICE_CVSD_16BIT) {
849 sco_pi(sk)->setting = voice.setting;
861 static int sco_sock_getsockopt_old(struct socket *sock, int optname,
862 char __user *optval, int __user *optlen)
864 struct sock *sk = sock->sk;
865 struct sco_options opts;
866 struct sco_conninfo cinfo;
871 if (get_user(len, optlen))
878 if (sk->sk_state != BT_CONNECTED &&
879 !(sk->sk_state == BT_CONNECT2 &&
880 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
885 opts.mtu = sco_pi(sk)->conn->mtu;
887 BT_DBG("mtu %d", opts.mtu);
889 len = min_t(unsigned int, len, sizeof(opts));
890 if (copy_to_user(optval, (char *)&opts, len))
896 if (sk->sk_state != BT_CONNECTED &&
897 !(sk->sk_state == BT_CONNECT2 &&
898 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
903 memset(&cinfo, 0, sizeof(cinfo));
904 cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle;
905 memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3);
907 len = min_t(unsigned int, len, sizeof(cinfo));
908 if (copy_to_user(optval, (char *)&cinfo, len))
922 static int sco_sock_getsockopt(struct socket *sock, int level, int optname,
923 char __user *optval, int __user *optlen)
925 struct sock *sk = sock->sk;
927 struct bt_voice voice;
931 if (level == SOL_SCO)
932 return sco_sock_getsockopt_old(sock, optname, optval, optlen);
934 if (get_user(len, optlen))
942 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
947 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
948 (u32 __user *)optval))
954 voice.setting = sco_pi(sk)->setting;
956 len = min_t(unsigned int, len, sizeof(voice));
957 if (copy_to_user(optval, (char *)&voice, len))
971 static int sco_sock_shutdown(struct socket *sock, int how)
973 struct sock *sk = sock->sk;
976 BT_DBG("sock %p, sk %p", sock, sk);
984 if (!sk->sk_shutdown) {
985 sk->sk_shutdown = SHUTDOWN_MASK;
986 sco_sock_clear_timer(sk);
987 __sco_sock_close(sk);
989 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
990 !(current->flags & PF_EXITING))
991 err = bt_sock_wait_state(sk, BT_CLOSED,
1001 static int sco_sock_release(struct socket *sock)
1003 struct sock *sk = sock->sk;
1006 BT_DBG("sock %p, sk %p", sock, sk);
1013 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
1014 !(current->flags & PF_EXITING)) {
1016 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
1025 static void sco_conn_ready(struct sco_conn *conn)
1027 struct sock *parent;
1028 struct sock *sk = conn->sk;
1030 BT_DBG("conn %p", conn);
1033 sco_sock_clear_timer(sk);
1035 sk->sk_state = BT_CONNECTED;
1036 sk->sk_state_change(sk);
1039 sco_conn_lock(conn);
1042 sco_conn_unlock(conn);
1046 parent = sco_get_sock_listen(&conn->hcon->src);
1048 sco_conn_unlock(conn);
1052 bh_lock_sock(parent);
1054 sk = sco_sock_alloc(sock_net(parent), NULL,
1055 BTPROTO_SCO, GFP_ATOMIC, 0);
1057 bh_unlock_sock(parent);
1058 sco_conn_unlock(conn);
1062 sco_sock_init(sk, parent);
1064 bacpy(&sco_pi(sk)->src, &conn->hcon->src);
1065 bacpy(&sco_pi(sk)->dst, &conn->hcon->dst);
1067 hci_conn_hold(conn->hcon);
1068 __sco_chan_add(conn, sk, parent);
1070 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
1071 sk->sk_state = BT_CONNECT2;
1073 sk->sk_state = BT_CONNECTED;
1075 /* Wake up parent */
1076 parent->sk_data_ready(parent);
1078 bh_unlock_sock(parent);
1080 sco_conn_unlock(conn);
1084 /* ----- SCO interface with lower layer (HCI) ----- */
1085 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags)
1090 BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr);
1092 /* Find listening sockets */
1093 read_lock(&sco_sk_list.lock);
1094 sk_for_each(sk, &sco_sk_list.head) {
1095 if (sk->sk_state != BT_LISTEN)
1098 if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) ||
1099 !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) {
1100 lm |= HCI_LM_ACCEPT;
1102 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))
1103 *flags |= HCI_PROTO_DEFER;
1107 read_unlock(&sco_sk_list.lock);
1112 static void sco_connect_cfm(struct hci_conn *hcon, __u8 status)
1114 if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
1117 BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status);
1120 struct sco_conn *conn;
1122 conn = sco_conn_add(hcon);
1124 sco_conn_ready(conn);
1126 sco_conn_del(hcon, bt_to_errno(status));
1129 static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason)
1131 if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
1134 BT_DBG("hcon %p reason %d", hcon, reason);
1136 sco_conn_del(hcon, bt_to_errno(reason));
1139 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
1141 struct sco_conn *conn = hcon->sco_data;
1146 BT_DBG("conn %p len %d", conn, skb->len);
1149 sco_recv_frame(conn, skb);
1157 static struct hci_cb sco_cb = {
1159 .connect_cfm = sco_connect_cfm,
1160 .disconn_cfm = sco_disconn_cfm,
1163 static int sco_debugfs_show(struct seq_file *f, void *p)
1167 read_lock(&sco_sk_list.lock);
1169 sk_for_each(sk, &sco_sk_list.head) {
1170 seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src,
1171 &sco_pi(sk)->dst, sk->sk_state);
1174 read_unlock(&sco_sk_list.lock);
1179 static int sco_debugfs_open(struct inode *inode, struct file *file)
1181 return single_open(file, sco_debugfs_show, inode->i_private);
1184 static const struct file_operations sco_debugfs_fops = {
1185 .open = sco_debugfs_open,
1187 .llseek = seq_lseek,
1188 .release = single_release,
1191 static struct dentry *sco_debugfs;
1193 static const struct proto_ops sco_sock_ops = {
1194 .family = PF_BLUETOOTH,
1195 .owner = THIS_MODULE,
1196 .release = sco_sock_release,
1197 .bind = sco_sock_bind,
1198 .connect = sco_sock_connect,
1199 .listen = sco_sock_listen,
1200 .accept = sco_sock_accept,
1201 .getname = sco_sock_getname,
1202 .sendmsg = sco_sock_sendmsg,
1203 .recvmsg = sco_sock_recvmsg,
1204 .poll = bt_sock_poll,
1205 .ioctl = bt_sock_ioctl,
1206 .mmap = sock_no_mmap,
1207 .socketpair = sock_no_socketpair,
1208 .shutdown = sco_sock_shutdown,
1209 .setsockopt = sco_sock_setsockopt,
1210 .getsockopt = sco_sock_getsockopt
1213 static const struct net_proto_family sco_sock_family_ops = {
1214 .family = PF_BLUETOOTH,
1215 .owner = THIS_MODULE,
1216 .create = sco_sock_create,
1219 int __init sco_init(void)
1223 BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr));
1225 err = proto_register(&sco_proto, 0);
1229 err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops);
1231 BT_ERR("SCO socket registration failed");
1235 err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL);
1237 BT_ERR("Failed to create SCO proc file");
1238 bt_sock_unregister(BTPROTO_SCO);
1242 BT_INFO("SCO socket layer initialized");
1244 hci_register_cb(&sco_cb);
1246 if (IS_ERR_OR_NULL(bt_debugfs))
1249 sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs,
1250 NULL, &sco_debugfs_fops);
1255 proto_unregister(&sco_proto);
1261 bt_procfs_cleanup(&init_net, "sco");
1263 debugfs_remove(sco_debugfs);
1265 hci_unregister_cb(&sco_cb);
1267 bt_sock_unregister(BTPROTO_SCO);
1269 proto_unregister(&sco_proto);
1272 module_param(disable_esco, bool, 0644);
1273 MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation");