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);
130 static struct sock *sco_chan_get(struct sco_conn *conn)
132 struct sock *sk = NULL;
135 sco_conn_unlock(conn);
140 * Must be called on the locked socket. */
141 static void sco_chan_del(struct sock *sk, int err)
143 struct sco_conn *conn;
145 conn = sco_pi(sk)->conn;
147 BT_DBG("sk %p, conn %p, err %d", sk, conn, err);
152 sco_pi(sk)->conn = NULL;
153 sco_conn_unlock(conn);
156 hci_conn_drop(conn->hcon);
159 sk->sk_state = BT_CLOSED;
161 sk->sk_state_change(sk);
163 sock_set_flag(sk, SOCK_ZAPPED);
166 static int sco_conn_del(struct hci_conn *hcon, int err)
168 struct sco_conn *conn = hcon->sco_data;
174 BT_DBG("hcon %p conn %p, err %d", hcon, conn, err);
177 sk = sco_chan_get(conn);
180 sco_sock_clear_timer(sk);
181 sco_chan_del(sk, err);
186 hcon->sco_data = NULL;
191 static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent)
193 BT_DBG("conn %p", conn);
195 sco_pi(sk)->conn = conn;
199 bt_accept_enqueue(parent, sk);
202 static int sco_chan_add(struct sco_conn *conn, struct sock *sk,
211 __sco_chan_add(conn, sk, parent);
213 sco_conn_unlock(conn);
217 static int sco_connect(struct sock *sk)
219 struct sco_conn *conn;
220 struct hci_conn *hcon;
221 struct hci_dev *hdev;
224 BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst);
226 hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src);
228 return -EHOSTUNREACH;
232 if (lmp_esco_capable(hdev) && !disable_esco)
237 if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT &&
238 (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) {
243 hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst,
244 sco_pi(sk)->setting);
250 conn = sco_conn_add(hcon);
257 /* Update source addr of the socket */
258 bacpy(&sco_pi(sk)->src, &hcon->src);
260 err = sco_chan_add(conn, sk, NULL);
264 if (hcon->state == BT_CONNECTED) {
265 sco_sock_clear_timer(sk);
266 sk->sk_state = BT_CONNECTED;
268 sk->sk_state = BT_CONNECT;
269 sco_sock_set_timer(sk, sk->sk_sndtimeo);
273 hci_dev_unlock(hdev);
278 static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len)
280 struct sco_conn *conn = sco_pi(sk)->conn;
284 /* Check outgoing MTU */
288 BT_DBG("sk %p len %d", sk, len);
290 skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err);
294 if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
299 hci_send_sco(conn->hcon, skb);
304 static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb)
306 struct sock *sk = sco_chan_get(conn);
311 BT_DBG("sk %p len %d", sk, skb->len);
313 if (sk->sk_state != BT_CONNECTED)
316 if (!sock_queue_rcv_skb(sk, skb))
323 /* -------- Socket interface ---------- */
324 static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba)
328 sk_for_each(sk, &sco_sk_list.head) {
329 if (sk->sk_state != BT_LISTEN)
332 if (!bacmp(&sco_pi(sk)->src, ba))
339 /* Find socket listening on source bdaddr.
340 * Returns closest match.
342 static struct sock *sco_get_sock_listen(bdaddr_t *src)
344 struct sock *sk = NULL, *sk1 = NULL;
346 read_lock(&sco_sk_list.lock);
348 sk_for_each(sk, &sco_sk_list.head) {
349 if (sk->sk_state != BT_LISTEN)
353 if (!bacmp(&sco_pi(sk)->src, src))
357 if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY))
361 read_unlock(&sco_sk_list.lock);
363 return sk ? sk : sk1;
366 static void sco_sock_destruct(struct sock *sk)
370 skb_queue_purge(&sk->sk_receive_queue);
371 skb_queue_purge(&sk->sk_write_queue);
374 static void sco_sock_cleanup_listen(struct sock *parent)
378 BT_DBG("parent %p", parent);
380 /* Close not yet accepted channels */
381 while ((sk = bt_accept_dequeue(parent, NULL))) {
386 parent->sk_state = BT_CLOSED;
387 sock_set_flag(parent, SOCK_ZAPPED);
390 /* Kill socket (only if zapped and orphan)
391 * Must be called on unlocked socket.
393 static void sco_sock_kill(struct sock *sk)
395 if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
398 BT_DBG("sk %p state %d", sk, sk->sk_state);
400 /* Kill poor orphan */
401 bt_sock_unlink(&sco_sk_list, sk);
402 sock_set_flag(sk, SOCK_DEAD);
406 static void __sco_sock_close(struct sock *sk)
408 BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
410 switch (sk->sk_state) {
412 sco_sock_cleanup_listen(sk);
417 if (sco_pi(sk)->conn->hcon) {
418 sk->sk_state = BT_DISCONN;
419 sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT);
420 hci_conn_drop(sco_pi(sk)->conn->hcon);
421 sco_pi(sk)->conn->hcon = NULL;
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);
448 static void sco_sock_init(struct sock *sk, struct sock *parent)
453 sk->sk_type = parent->sk_type;
454 bt_sk(sk)->flags = bt_sk(parent)->flags;
455 security_sk_clone(parent, sk);
459 static struct proto sco_proto = {
461 .owner = THIS_MODULE,
462 .obj_size = sizeof(struct sco_pinfo)
465 static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio)
469 sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto);
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);
510 sco_sock_init(sk, NULL);
514 static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
516 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
517 struct sock *sk = sock->sk;
520 BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr);
522 if (!addr || addr->sa_family != AF_BLUETOOTH)
527 if (sk->sk_state != BT_OPEN) {
532 if (sk->sk_type != SOCK_SEQPACKET) {
537 bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr);
539 sk->sk_state = BT_BOUND;
546 static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
548 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
549 struct sock *sk = sock->sk;
554 if (alen < sizeof(struct sockaddr_sco) ||
555 addr->sa_family != AF_BLUETOOTH)
558 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND)
561 if (sk->sk_type != SOCK_SEQPACKET)
566 /* Set destination address and psm */
567 bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr);
569 err = sco_connect(sk);
573 err = bt_sock_wait_state(sk, BT_CONNECTED,
574 sock_sndtimeo(sk, flags & O_NONBLOCK));
581 static int sco_sock_listen(struct socket *sock, int backlog)
583 struct sock *sk = sock->sk;
584 bdaddr_t *src = &sco_pi(sk)->src;
587 BT_DBG("sk %p backlog %d", sk, backlog);
591 if (sk->sk_state != BT_BOUND) {
596 if (sk->sk_type != SOCK_SEQPACKET) {
601 write_lock(&sco_sk_list.lock);
603 if (__sco_get_sock_listen_by_addr(src)) {
608 sk->sk_max_ack_backlog = backlog;
609 sk->sk_ack_backlog = 0;
611 sk->sk_state = BT_LISTEN;
614 write_unlock(&sco_sk_list.lock);
621 static int sco_sock_accept(struct socket *sock, struct socket *newsock, int flags)
623 DECLARE_WAITQUEUE(wait, current);
624 struct sock *sk = sock->sk, *ch;
630 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
632 BT_DBG("sk %p timeo %ld", sk, timeo);
634 /* Wait for an incoming connection. (wake-one). */
635 add_wait_queue_exclusive(sk_sleep(sk), &wait);
637 set_current_state(TASK_INTERRUPTIBLE);
639 if (sk->sk_state != BT_LISTEN) {
644 ch = bt_accept_dequeue(sk, newsock);
653 if (signal_pending(current)) {
654 err = sock_intr_errno(timeo);
659 timeo = schedule_timeout(timeo);
662 __set_current_state(TASK_RUNNING);
663 remove_wait_queue(sk_sleep(sk), &wait);
668 newsock->state = SS_CONNECTED;
670 BT_DBG("new socket %p", ch);
677 static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
679 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
680 struct sock *sk = sock->sk;
682 BT_DBG("sock %p, sk %p", sock, sk);
684 addr->sa_family = AF_BLUETOOTH;
685 *len = sizeof(struct sockaddr_sco);
688 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst);
690 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src);
695 static int sco_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
696 struct msghdr *msg, size_t len)
698 struct sock *sk = sock->sk;
701 BT_DBG("sock %p, sk %p", sock, sk);
703 err = sock_error(sk);
707 if (msg->msg_flags & MSG_OOB)
712 if (sk->sk_state == BT_CONNECTED)
713 err = sco_send_frame(sk, msg, len);
721 static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting)
723 struct hci_dev *hdev = conn->hdev;
725 BT_DBG("conn %p", conn);
727 conn->state = BT_CONFIG;
729 if (!lmp_esco_capable(hdev)) {
730 struct hci_cp_accept_conn_req cp;
732 bacpy(&cp.bdaddr, &conn->dst);
733 cp.role = 0x00; /* Ignored */
735 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
737 struct hci_cp_accept_sync_conn_req cp;
739 bacpy(&cp.bdaddr, &conn->dst);
740 cp.pkt_type = cpu_to_le16(conn->pkt_type);
742 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
743 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
744 cp.content_format = cpu_to_le16(setting);
746 switch (setting & SCO_AIRMODE_MASK) {
747 case SCO_AIRMODE_TRANSP:
748 if (conn->pkt_type & ESCO_2EV3)
749 cp.max_latency = cpu_to_le16(0x0008);
751 cp.max_latency = cpu_to_le16(0x000D);
752 cp.retrans_effort = 0x02;
754 case SCO_AIRMODE_CVSD:
755 cp.max_latency = cpu_to_le16(0xffff);
756 cp.retrans_effort = 0xff;
760 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
765 static int sco_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
766 struct msghdr *msg, size_t len, int flags)
768 struct sock *sk = sock->sk;
769 struct sco_pinfo *pi = sco_pi(sk);
773 if (sk->sk_state == BT_CONNECT2 &&
774 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
775 sco_conn_defer_accept(pi->conn->hcon, pi->setting);
776 sk->sk_state = BT_CONFIG;
784 return bt_sock_recvmsg(iocb, sock, msg, len, flags);
787 static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
789 struct sock *sk = sock->sk;
791 struct bt_voice voice;
801 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
806 if (get_user(opt, (u32 __user *) optval)) {
812 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
814 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
818 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND &&
819 sk->sk_state != BT_CONNECT2) {
824 voice.setting = sco_pi(sk)->setting;
826 len = min_t(unsigned int, sizeof(voice), optlen);
827 if (copy_from_user((char *) &voice, optval, len)) {
832 /* Explicitly check for these values */
833 if (voice.setting != BT_VOICE_TRANSPARENT &&
834 voice.setting != BT_VOICE_CVSD_16BIT) {
839 sco_pi(sk)->setting = voice.setting;
851 static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
853 struct sock *sk = sock->sk;
854 struct sco_options opts;
855 struct sco_conninfo cinfo;
860 if (get_user(len, optlen))
867 if (sk->sk_state != BT_CONNECTED &&
868 !(sk->sk_state == BT_CONNECT2 &&
869 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
874 opts.mtu = sco_pi(sk)->conn->mtu;
876 BT_DBG("mtu %d", opts.mtu);
878 len = min_t(unsigned int, len, sizeof(opts));
879 if (copy_to_user(optval, (char *)&opts, len))
885 if (sk->sk_state != BT_CONNECTED &&
886 !(sk->sk_state == BT_CONNECT2 &&
887 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
892 memset(&cinfo, 0, sizeof(cinfo));
893 cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle;
894 memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3);
896 len = min_t(unsigned int, len, sizeof(cinfo));
897 if (copy_to_user(optval, (char *)&cinfo, len))
911 static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
913 struct sock *sk = sock->sk;
915 struct bt_voice voice;
919 if (level == SOL_SCO)
920 return sco_sock_getsockopt_old(sock, optname, optval, optlen);
922 if (get_user(len, optlen))
930 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
935 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
936 (u32 __user *) optval))
942 voice.setting = sco_pi(sk)->setting;
944 len = min_t(unsigned int, len, sizeof(voice));
945 if (copy_to_user(optval, (char *)&voice, len))
959 static int sco_sock_shutdown(struct socket *sock, int how)
961 struct sock *sk = sock->sk;
964 BT_DBG("sock %p, sk %p", sock, sk);
970 if (!sk->sk_shutdown) {
971 sk->sk_shutdown = SHUTDOWN_MASK;
972 sco_sock_clear_timer(sk);
973 __sco_sock_close(sk);
975 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
976 err = bt_sock_wait_state(sk, BT_CLOSED,
983 static int sco_sock_release(struct socket *sock)
985 struct sock *sk = sock->sk;
988 BT_DBG("sock %p, sk %p", sock, sk);
995 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) {
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");