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 int 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);
174 sco_sock_clear_timer(sk);
175 sco_chan_del(sk, err);
180 hcon->sco_data = NULL;
185 static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent)
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_fromiovec(skb_put(skb, len), msg->msg_iov, 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 hci_conn_drop(sco_pi(sk)->conn->hcon);
419 sco_pi(sk)->conn->hcon = NULL;
421 sco_chan_del(sk, ECONNRESET);
427 sco_chan_del(sk, ECONNRESET);
431 sock_set_flag(sk, SOCK_ZAPPED);
436 /* Must be called on unlocked socket. */
437 static void sco_sock_close(struct sock *sk)
439 sco_sock_clear_timer(sk);
441 __sco_sock_close(sk);
446 static void sco_sock_init(struct sock *sk, struct sock *parent)
451 sk->sk_type = parent->sk_type;
452 bt_sk(sk)->flags = bt_sk(parent)->flags;
453 security_sk_clone(parent, sk);
457 static struct proto sco_proto = {
459 .owner = THIS_MODULE,
460 .obj_size = sizeof(struct sco_pinfo)
463 static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio)
467 sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto);
471 sock_init_data(sock, sk);
472 INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
474 sk->sk_destruct = sco_sock_destruct;
475 sk->sk_sndtimeo = SCO_CONN_TIMEOUT;
477 sock_reset_flag(sk, SOCK_ZAPPED);
479 sk->sk_protocol = proto;
480 sk->sk_state = BT_OPEN;
482 sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT;
484 setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk);
486 bt_sock_link(&sco_sk_list, sk);
490 static int sco_sock_create(struct net *net, struct socket *sock, int protocol,
495 BT_DBG("sock %p", sock);
497 sock->state = SS_UNCONNECTED;
499 if (sock->type != SOCK_SEQPACKET)
500 return -ESOCKTNOSUPPORT;
502 sock->ops = &sco_sock_ops;
504 sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC);
508 sco_sock_init(sk, NULL);
512 static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
514 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
515 struct sock *sk = sock->sk;
518 BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr);
520 if (!addr || addr->sa_family != AF_BLUETOOTH)
525 if (sk->sk_state != BT_OPEN) {
530 if (sk->sk_type != SOCK_SEQPACKET) {
535 bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr);
537 sk->sk_state = BT_BOUND;
544 static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
546 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
547 struct sock *sk = sock->sk;
552 if (alen < sizeof(struct sockaddr_sco) ||
553 addr->sa_family != AF_BLUETOOTH)
556 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND)
559 if (sk->sk_type != SOCK_SEQPACKET)
564 /* Set destination address and psm */
565 bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr);
567 err = sco_connect(sk);
571 err = bt_sock_wait_state(sk, BT_CONNECTED,
572 sock_sndtimeo(sk, flags & O_NONBLOCK));
579 static int sco_sock_listen(struct socket *sock, int backlog)
581 struct sock *sk = sock->sk;
582 bdaddr_t *src = &sco_pi(sk)->src;
585 BT_DBG("sk %p backlog %d", sk, backlog);
589 if (sk->sk_state != BT_BOUND) {
594 if (sk->sk_type != SOCK_SEQPACKET) {
599 write_lock(&sco_sk_list.lock);
601 if (__sco_get_sock_listen_by_addr(src)) {
606 sk->sk_max_ack_backlog = backlog;
607 sk->sk_ack_backlog = 0;
609 sk->sk_state = BT_LISTEN;
612 write_unlock(&sco_sk_list.lock);
619 static int sco_sock_accept(struct socket *sock, struct socket *newsock, int flags)
621 DECLARE_WAITQUEUE(wait, current);
622 struct sock *sk = sock->sk, *ch;
628 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
630 BT_DBG("sk %p timeo %ld", sk, timeo);
632 /* Wait for an incoming connection. (wake-one). */
633 add_wait_queue_exclusive(sk_sleep(sk), &wait);
635 set_current_state(TASK_INTERRUPTIBLE);
637 if (sk->sk_state != BT_LISTEN) {
642 ch = bt_accept_dequeue(sk, newsock);
651 if (signal_pending(current)) {
652 err = sock_intr_errno(timeo);
657 timeo = schedule_timeout(timeo);
660 __set_current_state(TASK_RUNNING);
661 remove_wait_queue(sk_sleep(sk), &wait);
666 newsock->state = SS_CONNECTED;
668 BT_DBG("new socket %p", ch);
675 static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
677 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
678 struct sock *sk = sock->sk;
680 BT_DBG("sock %p, sk %p", sock, sk);
682 addr->sa_family = AF_BLUETOOTH;
683 *len = sizeof(struct sockaddr_sco);
686 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst);
688 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src);
693 static int sco_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
694 struct msghdr *msg, size_t len)
696 struct sock *sk = sock->sk;
699 BT_DBG("sock %p, sk %p", sock, sk);
701 err = sock_error(sk);
705 if (msg->msg_flags & MSG_OOB)
710 if (sk->sk_state == BT_CONNECTED)
711 err = sco_send_frame(sk, msg, len);
719 static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting)
721 struct hci_dev *hdev = conn->hdev;
723 BT_DBG("conn %p", conn);
725 conn->state = BT_CONFIG;
727 if (!lmp_esco_capable(hdev)) {
728 struct hci_cp_accept_conn_req cp;
730 bacpy(&cp.bdaddr, &conn->dst);
731 cp.role = 0x00; /* Ignored */
733 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
735 struct hci_cp_accept_sync_conn_req cp;
737 bacpy(&cp.bdaddr, &conn->dst);
738 cp.pkt_type = cpu_to_le16(conn->pkt_type);
740 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
741 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
742 cp.content_format = cpu_to_le16(setting);
744 switch (setting & SCO_AIRMODE_MASK) {
745 case SCO_AIRMODE_TRANSP:
746 if (conn->pkt_type & ESCO_2EV3)
747 cp.max_latency = cpu_to_le16(0x0008);
749 cp.max_latency = cpu_to_le16(0x000D);
750 cp.retrans_effort = 0x02;
752 case SCO_AIRMODE_CVSD:
753 cp.max_latency = cpu_to_le16(0xffff);
754 cp.retrans_effort = 0xff;
758 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
763 static int sco_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
764 struct msghdr *msg, size_t len, int flags)
766 struct sock *sk = sock->sk;
767 struct sco_pinfo *pi = sco_pi(sk);
771 if (sk->sk_state == BT_CONNECT2 &&
772 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
773 sco_conn_defer_accept(pi->conn->hcon, pi->setting);
774 sk->sk_state = BT_CONFIG;
782 return bt_sock_recvmsg(iocb, sock, msg, len, flags);
785 static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
787 struct sock *sk = sock->sk;
789 struct bt_voice voice;
799 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
804 if (get_user(opt, (u32 __user *) optval)) {
810 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
812 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
816 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND &&
817 sk->sk_state != BT_CONNECT2) {
822 voice.setting = sco_pi(sk)->setting;
824 len = min_t(unsigned int, sizeof(voice), optlen);
825 if (copy_from_user((char *) &voice, optval, len)) {
830 /* Explicitly check for these values */
831 if (voice.setting != BT_VOICE_TRANSPARENT &&
832 voice.setting != BT_VOICE_CVSD_16BIT) {
837 sco_pi(sk)->setting = voice.setting;
849 static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
851 struct sock *sk = sock->sk;
852 struct sco_options opts;
853 struct sco_conninfo cinfo;
858 if (get_user(len, optlen))
865 if (sk->sk_state != BT_CONNECTED &&
866 !(sk->sk_state == BT_CONNECT2 &&
867 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
872 opts.mtu = sco_pi(sk)->conn->mtu;
874 BT_DBG("mtu %d", opts.mtu);
876 len = min_t(unsigned int, len, sizeof(opts));
877 if (copy_to_user(optval, (char *)&opts, len))
883 if (sk->sk_state != BT_CONNECTED &&
884 !(sk->sk_state == BT_CONNECT2 &&
885 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
890 memset(&cinfo, 0, sizeof(cinfo));
891 cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle;
892 memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3);
894 len = min_t(unsigned int, len, sizeof(cinfo));
895 if (copy_to_user(optval, (char *)&cinfo, len))
909 static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
911 struct sock *sk = sock->sk;
913 struct bt_voice voice;
917 if (level == SOL_SCO)
918 return sco_sock_getsockopt_old(sock, optname, optval, optlen);
920 if (get_user(len, optlen))
928 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
933 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
934 (u32 __user *) optval))
940 voice.setting = sco_pi(sk)->setting;
942 len = min_t(unsigned int, len, sizeof(voice));
943 if (copy_to_user(optval, (char *)&voice, len))
957 static int sco_sock_shutdown(struct socket *sock, int how)
959 struct sock *sk = sock->sk;
962 BT_DBG("sock %p, sk %p", sock, sk);
968 if (!sk->sk_shutdown) {
969 sk->sk_shutdown = SHUTDOWN_MASK;
970 sco_sock_clear_timer(sk);
971 __sco_sock_close(sk);
973 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
974 !(current->flags & PF_EXITING))
975 err = bt_sock_wait_state(sk, BT_CLOSED,
982 static int sco_sock_release(struct socket *sock)
984 struct sock *sk = sock->sk;
987 BT_DBG("sock %p, sk %p", sock, sk);
994 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
995 !(current->flags & PF_EXITING)) {
997 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
1006 static void sco_conn_ready(struct sco_conn *conn)
1008 struct sock *parent;
1009 struct sock *sk = conn->sk;
1011 BT_DBG("conn %p", conn);
1014 sco_sock_clear_timer(sk);
1016 sk->sk_state = BT_CONNECTED;
1017 sk->sk_state_change(sk);
1020 sco_conn_lock(conn);
1022 parent = sco_get_sock_listen(&conn->hcon->src);
1024 sco_conn_unlock(conn);
1028 bh_lock_sock(parent);
1030 sk = sco_sock_alloc(sock_net(parent), NULL,
1031 BTPROTO_SCO, GFP_ATOMIC);
1033 bh_unlock_sock(parent);
1034 sco_conn_unlock(conn);
1038 sco_sock_init(sk, parent);
1040 bacpy(&sco_pi(sk)->src, &conn->hcon->src);
1041 bacpy(&sco_pi(sk)->dst, &conn->hcon->dst);
1043 hci_conn_hold(conn->hcon);
1044 __sco_chan_add(conn, sk, parent);
1046 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
1047 sk->sk_state = BT_CONNECT2;
1049 sk->sk_state = BT_CONNECTED;
1051 /* Wake up parent */
1052 parent->sk_data_ready(parent);
1054 bh_unlock_sock(parent);
1056 sco_conn_unlock(conn);
1060 /* ----- SCO interface with lower layer (HCI) ----- */
1061 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags)
1066 BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr);
1068 /* Find listening sockets */
1069 read_lock(&sco_sk_list.lock);
1070 sk_for_each(sk, &sco_sk_list.head) {
1071 if (sk->sk_state != BT_LISTEN)
1074 if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) ||
1075 !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) {
1076 lm |= HCI_LM_ACCEPT;
1078 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))
1079 *flags |= HCI_PROTO_DEFER;
1083 read_unlock(&sco_sk_list.lock);
1088 void sco_connect_cfm(struct hci_conn *hcon, __u8 status)
1090 BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status);
1092 struct sco_conn *conn;
1094 conn = sco_conn_add(hcon);
1096 sco_conn_ready(conn);
1098 sco_conn_del(hcon, bt_to_errno(status));
1101 void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason)
1103 BT_DBG("hcon %p reason %d", hcon, reason);
1105 sco_conn_del(hcon, bt_to_errno(reason));
1108 int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
1110 struct sco_conn *conn = hcon->sco_data;
1115 BT_DBG("conn %p len %d", conn, skb->len);
1118 sco_recv_frame(conn, skb);
1127 static int sco_debugfs_show(struct seq_file *f, void *p)
1131 read_lock(&sco_sk_list.lock);
1133 sk_for_each(sk, &sco_sk_list.head) {
1134 seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src,
1135 &sco_pi(sk)->dst, sk->sk_state);
1138 read_unlock(&sco_sk_list.lock);
1143 static int sco_debugfs_open(struct inode *inode, struct file *file)
1145 return single_open(file, sco_debugfs_show, inode->i_private);
1148 static const struct file_operations sco_debugfs_fops = {
1149 .open = sco_debugfs_open,
1151 .llseek = seq_lseek,
1152 .release = single_release,
1155 static struct dentry *sco_debugfs;
1157 static const struct proto_ops sco_sock_ops = {
1158 .family = PF_BLUETOOTH,
1159 .owner = THIS_MODULE,
1160 .release = sco_sock_release,
1161 .bind = sco_sock_bind,
1162 .connect = sco_sock_connect,
1163 .listen = sco_sock_listen,
1164 .accept = sco_sock_accept,
1165 .getname = sco_sock_getname,
1166 .sendmsg = sco_sock_sendmsg,
1167 .recvmsg = sco_sock_recvmsg,
1168 .poll = bt_sock_poll,
1169 .ioctl = bt_sock_ioctl,
1170 .mmap = sock_no_mmap,
1171 .socketpair = sock_no_socketpair,
1172 .shutdown = sco_sock_shutdown,
1173 .setsockopt = sco_sock_setsockopt,
1174 .getsockopt = sco_sock_getsockopt
1177 static const struct net_proto_family sco_sock_family_ops = {
1178 .family = PF_BLUETOOTH,
1179 .owner = THIS_MODULE,
1180 .create = sco_sock_create,
1183 int __init sco_init(void)
1187 err = proto_register(&sco_proto, 0);
1191 err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops);
1193 BT_ERR("SCO socket registration failed");
1197 err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL);
1199 BT_ERR("Failed to create SCO proc file");
1200 bt_sock_unregister(BTPROTO_SCO);
1204 BT_INFO("SCO socket layer initialized");
1206 if (IS_ERR_OR_NULL(bt_debugfs))
1209 sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs,
1210 NULL, &sco_debugfs_fops);
1215 proto_unregister(&sco_proto);
1219 void __exit sco_exit(void)
1221 bt_procfs_cleanup(&init_net, "sco");
1223 debugfs_remove(sco_debugfs);
1225 bt_sock_unregister(BTPROTO_SCO);
1227 proto_unregister(&sco_proto);
1230 module_param(disable_esco, bool, 0644);
1231 MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation");