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)
523 if (addr_len < sizeof(struct sockaddr_sco))
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 DECLARE_WAITQUEUE(wait, current);
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 set_current_state(TASK_INTERRUPTIBLE);
640 if (sk->sk_state != BT_LISTEN) {
645 ch = bt_accept_dequeue(sk, newsock);
654 if (signal_pending(current)) {
655 err = sock_intr_errno(timeo);
660 timeo = schedule_timeout(timeo);
663 __set_current_state(TASK_RUNNING);
664 remove_wait_queue(sk_sleep(sk), &wait);
669 newsock->state = SS_CONNECTED;
671 BT_DBG("new socket %p", ch);
678 static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
680 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
681 struct sock *sk = sock->sk;
683 BT_DBG("sock %p, sk %p", sock, sk);
685 addr->sa_family = AF_BLUETOOTH;
686 *len = sizeof(struct sockaddr_sco);
689 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst);
691 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src);
696 static int sco_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
697 struct msghdr *msg, size_t len)
699 struct sock *sk = sock->sk;
702 BT_DBG("sock %p, sk %p", sock, sk);
704 err = sock_error(sk);
708 if (msg->msg_flags & MSG_OOB)
713 if (sk->sk_state == BT_CONNECTED)
714 err = sco_send_frame(sk, msg, len);
722 static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting)
724 struct hci_dev *hdev = conn->hdev;
726 BT_DBG("conn %p", conn);
728 conn->state = BT_CONFIG;
730 if (!lmp_esco_capable(hdev)) {
731 struct hci_cp_accept_conn_req cp;
733 bacpy(&cp.bdaddr, &conn->dst);
734 cp.role = 0x00; /* Ignored */
736 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
738 struct hci_cp_accept_sync_conn_req cp;
740 bacpy(&cp.bdaddr, &conn->dst);
741 cp.pkt_type = cpu_to_le16(conn->pkt_type);
743 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
744 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
745 cp.content_format = cpu_to_le16(setting);
747 switch (setting & SCO_AIRMODE_MASK) {
748 case SCO_AIRMODE_TRANSP:
749 if (conn->pkt_type & ESCO_2EV3)
750 cp.max_latency = cpu_to_le16(0x0008);
752 cp.max_latency = cpu_to_le16(0x000D);
753 cp.retrans_effort = 0x02;
755 case SCO_AIRMODE_CVSD:
756 cp.max_latency = cpu_to_le16(0xffff);
757 cp.retrans_effort = 0xff;
761 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
766 static int sco_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
767 struct msghdr *msg, size_t len, int flags)
769 struct sock *sk = sock->sk;
770 struct sco_pinfo *pi = sco_pi(sk);
774 if (sk->sk_state == BT_CONNECT2 &&
775 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
776 sco_conn_defer_accept(pi->conn->hcon, pi->setting);
777 sk->sk_state = BT_CONFIG;
785 return bt_sock_recvmsg(iocb, sock, msg, len, flags);
788 static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
790 struct sock *sk = sock->sk;
792 struct bt_voice voice;
802 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
807 if (get_user(opt, (u32 __user *) optval)) {
813 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
815 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
819 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND &&
820 sk->sk_state != BT_CONNECT2) {
825 voice.setting = sco_pi(sk)->setting;
827 len = min_t(unsigned int, sizeof(voice), optlen);
828 if (copy_from_user((char *) &voice, optval, len)) {
833 /* Explicitly check for these values */
834 if (voice.setting != BT_VOICE_TRANSPARENT &&
835 voice.setting != BT_VOICE_CVSD_16BIT) {
840 sco_pi(sk)->setting = voice.setting;
852 static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
854 struct sock *sk = sock->sk;
855 struct sco_options opts;
856 struct sco_conninfo cinfo;
861 if (get_user(len, optlen))
868 if (sk->sk_state != BT_CONNECTED &&
869 !(sk->sk_state == BT_CONNECT2 &&
870 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
875 opts.mtu = sco_pi(sk)->conn->mtu;
877 BT_DBG("mtu %d", opts.mtu);
879 len = min_t(unsigned int, len, sizeof(opts));
880 if (copy_to_user(optval, (char *)&opts, len))
886 if (sk->sk_state != BT_CONNECTED &&
887 !(sk->sk_state == BT_CONNECT2 &&
888 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
893 memset(&cinfo, 0, sizeof(cinfo));
894 cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle;
895 memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3);
897 len = min_t(unsigned int, len, sizeof(cinfo));
898 if (copy_to_user(optval, (char *)&cinfo, len))
912 static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
914 struct sock *sk = sock->sk;
916 struct bt_voice voice;
920 if (level == SOL_SCO)
921 return sco_sock_getsockopt_old(sock, optname, optval, optlen);
923 if (get_user(len, optlen))
931 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
936 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
937 (u32 __user *) optval))
943 voice.setting = sco_pi(sk)->setting;
945 len = min_t(unsigned int, len, sizeof(voice));
946 if (copy_to_user(optval, (char *)&voice, len))
960 static int sco_sock_shutdown(struct socket *sock, int how)
962 struct sock *sk = sock->sk;
965 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,
985 static int sco_sock_release(struct socket *sock)
987 struct sock *sk = sock->sk;
990 BT_DBG("sock %p, sk %p", sock, sk);
997 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
998 !(current->flags & PF_EXITING)) {
1000 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
1009 static void sco_conn_ready(struct sco_conn *conn)
1011 struct sock *parent;
1012 struct sock *sk = conn->sk;
1014 BT_DBG("conn %p", conn);
1017 sco_sock_clear_timer(sk);
1019 sk->sk_state = BT_CONNECTED;
1020 sk->sk_state_change(sk);
1023 sco_conn_lock(conn);
1025 parent = sco_get_sock_listen(&conn->hcon->src);
1027 sco_conn_unlock(conn);
1031 bh_lock_sock(parent);
1033 sk = sco_sock_alloc(sock_net(parent), NULL,
1034 BTPROTO_SCO, GFP_ATOMIC);
1036 bh_unlock_sock(parent);
1037 sco_conn_unlock(conn);
1041 sco_sock_init(sk, parent);
1043 bacpy(&sco_pi(sk)->src, &conn->hcon->src);
1044 bacpy(&sco_pi(sk)->dst, &conn->hcon->dst);
1046 hci_conn_hold(conn->hcon);
1047 __sco_chan_add(conn, sk, parent);
1049 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
1050 sk->sk_state = BT_CONNECT2;
1052 sk->sk_state = BT_CONNECTED;
1054 /* Wake up parent */
1055 parent->sk_data_ready(parent);
1057 bh_unlock_sock(parent);
1059 sco_conn_unlock(conn);
1063 /* ----- SCO interface with lower layer (HCI) ----- */
1064 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags)
1069 BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr);
1071 /* Find listening sockets */
1072 read_lock(&sco_sk_list.lock);
1073 sk_for_each(sk, &sco_sk_list.head) {
1074 if (sk->sk_state != BT_LISTEN)
1077 if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) ||
1078 !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) {
1079 lm |= HCI_LM_ACCEPT;
1081 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))
1082 *flags |= HCI_PROTO_DEFER;
1086 read_unlock(&sco_sk_list.lock);
1091 void sco_connect_cfm(struct hci_conn *hcon, __u8 status)
1093 BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status);
1095 struct sco_conn *conn;
1097 conn = sco_conn_add(hcon);
1099 sco_conn_ready(conn);
1101 sco_conn_del(hcon, bt_to_errno(status));
1104 void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason)
1106 BT_DBG("hcon %p reason %d", hcon, reason);
1108 sco_conn_del(hcon, bt_to_errno(reason));
1111 int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
1113 struct sco_conn *conn = hcon->sco_data;
1118 BT_DBG("conn %p len %d", conn, skb->len);
1121 sco_recv_frame(conn, skb);
1130 static int sco_debugfs_show(struct seq_file *f, void *p)
1134 read_lock(&sco_sk_list.lock);
1136 sk_for_each(sk, &sco_sk_list.head) {
1137 seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src,
1138 &sco_pi(sk)->dst, sk->sk_state);
1141 read_unlock(&sco_sk_list.lock);
1146 static int sco_debugfs_open(struct inode *inode, struct file *file)
1148 return single_open(file, sco_debugfs_show, inode->i_private);
1151 static const struct file_operations sco_debugfs_fops = {
1152 .open = sco_debugfs_open,
1154 .llseek = seq_lseek,
1155 .release = single_release,
1158 static struct dentry *sco_debugfs;
1160 static const struct proto_ops sco_sock_ops = {
1161 .family = PF_BLUETOOTH,
1162 .owner = THIS_MODULE,
1163 .release = sco_sock_release,
1164 .bind = sco_sock_bind,
1165 .connect = sco_sock_connect,
1166 .listen = sco_sock_listen,
1167 .accept = sco_sock_accept,
1168 .getname = sco_sock_getname,
1169 .sendmsg = sco_sock_sendmsg,
1170 .recvmsg = sco_sock_recvmsg,
1171 .poll = bt_sock_poll,
1172 .ioctl = bt_sock_ioctl,
1173 .mmap = sock_no_mmap,
1174 .socketpair = sock_no_socketpair,
1175 .shutdown = sco_sock_shutdown,
1176 .setsockopt = sco_sock_setsockopt,
1177 .getsockopt = sco_sock_getsockopt
1180 static const struct net_proto_family sco_sock_family_ops = {
1181 .family = PF_BLUETOOTH,
1182 .owner = THIS_MODULE,
1183 .create = sco_sock_create,
1186 int __init sco_init(void)
1190 err = proto_register(&sco_proto, 0);
1194 err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops);
1196 BT_ERR("SCO socket registration failed");
1200 err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL);
1202 BT_ERR("Failed to create SCO proc file");
1203 bt_sock_unregister(BTPROTO_SCO);
1207 BT_INFO("SCO socket layer initialized");
1209 if (IS_ERR_OR_NULL(bt_debugfs))
1212 sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs,
1213 NULL, &sco_debugfs_fops);
1218 proto_unregister(&sco_proto);
1222 void __exit sco_exit(void)
1224 bt_procfs_cleanup(&init_net, "sco");
1226 debugfs_remove(sco_debugfs);
1228 bt_sock_unregister(BTPROTO_SCO);
1230 proto_unregister(&sco_proto);
1233 module_param(disable_esco, bool, 0644);
1234 MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation");