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);
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, struct sock *parent)
186 BT_DBG("conn %p", conn);
188 sco_pi(sk)->conn = conn;
192 bt_accept_enqueue(parent, sk);
195 static int sco_chan_add(struct sco_conn *conn, struct sock *sk,
204 __sco_chan_add(conn, sk, parent);
206 sco_conn_unlock(conn);
210 static int sco_connect(struct sock *sk)
212 struct sco_conn *conn;
213 struct hci_conn *hcon;
214 struct hci_dev *hdev;
217 BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst);
219 hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src);
221 return -EHOSTUNREACH;
225 if (lmp_esco_capable(hdev) && !disable_esco)
230 if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT &&
231 (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) {
236 hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst,
237 sco_pi(sk)->setting);
243 conn = sco_conn_add(hcon);
250 /* Update source addr of the socket */
251 bacpy(&sco_pi(sk)->src, &hcon->src);
253 err = sco_chan_add(conn, sk, NULL);
257 if (hcon->state == BT_CONNECTED) {
258 sco_sock_clear_timer(sk);
259 sk->sk_state = BT_CONNECTED;
261 sk->sk_state = BT_CONNECT;
262 sco_sock_set_timer(sk, sk->sk_sndtimeo);
266 hci_dev_unlock(hdev);
271 static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len)
273 struct sco_conn *conn = sco_pi(sk)->conn;
277 /* Check outgoing MTU */
281 BT_DBG("sk %p len %d", sk, len);
283 skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err);
287 if (memcpy_from_msg(skb_put(skb, len), msg, len)) {
292 hci_send_sco(conn->hcon, skb);
297 static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb)
303 sco_conn_unlock(conn);
308 BT_DBG("sk %p len %d", sk, skb->len);
310 if (sk->sk_state != BT_CONNECTED)
313 if (!sock_queue_rcv_skb(sk, skb))
320 /* -------- Socket interface ---------- */
321 static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba)
325 sk_for_each(sk, &sco_sk_list.head) {
326 if (sk->sk_state != BT_LISTEN)
329 if (!bacmp(&sco_pi(sk)->src, ba))
336 /* Find socket listening on source bdaddr.
337 * Returns closest match.
339 static struct sock *sco_get_sock_listen(bdaddr_t *src)
341 struct sock *sk = NULL, *sk1 = NULL;
343 read_lock(&sco_sk_list.lock);
345 sk_for_each(sk, &sco_sk_list.head) {
346 if (sk->sk_state != BT_LISTEN)
350 if (!bacmp(&sco_pi(sk)->src, src))
354 if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY))
358 read_unlock(&sco_sk_list.lock);
360 return sk ? sk : sk1;
363 static void sco_sock_destruct(struct sock *sk)
367 skb_queue_purge(&sk->sk_receive_queue);
368 skb_queue_purge(&sk->sk_write_queue);
371 static void sco_sock_cleanup_listen(struct sock *parent)
375 BT_DBG("parent %p", parent);
377 /* Close not yet accepted channels */
378 while ((sk = bt_accept_dequeue(parent, NULL))) {
383 parent->sk_state = BT_CLOSED;
384 sock_set_flag(parent, SOCK_ZAPPED);
387 /* Kill socket (only if zapped and orphan)
388 * Must be called on unlocked socket.
390 static void sco_sock_kill(struct sock *sk)
392 if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
395 BT_DBG("sk %p state %d", sk, sk->sk_state);
397 /* Kill poor orphan */
398 bt_sock_unlink(&sco_sk_list, sk);
399 sock_set_flag(sk, SOCK_DEAD);
403 static void __sco_sock_close(struct sock *sk)
405 BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
407 switch (sk->sk_state) {
409 sco_sock_cleanup_listen(sk);
414 if (sco_pi(sk)->conn->hcon) {
415 sk->sk_state = BT_DISCONN;
416 sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT);
417 hci_conn_drop(sco_pi(sk)->conn->hcon);
418 sco_pi(sk)->conn->hcon = NULL;
420 sco_chan_del(sk, ECONNRESET);
426 sco_chan_del(sk, ECONNRESET);
430 sock_set_flag(sk, SOCK_ZAPPED);
435 /* Must be called on unlocked socket. */
436 static void sco_sock_close(struct sock *sk)
438 sco_sock_clear_timer(sk);
440 __sco_sock_close(sk);
445 static void sco_sock_init(struct sock *sk, struct sock *parent)
450 sk->sk_type = parent->sk_type;
451 bt_sk(sk)->flags = bt_sk(parent)->flags;
452 security_sk_clone(parent, sk);
456 static struct proto sco_proto = {
458 .owner = THIS_MODULE,
459 .obj_size = sizeof(struct sco_pinfo)
462 static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio, int kern)
466 sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern);
470 sock_init_data(sock, sk);
471 INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
473 sk->sk_destruct = sco_sock_destruct;
474 sk->sk_sndtimeo = SCO_CONN_TIMEOUT;
476 sock_reset_flag(sk, SOCK_ZAPPED);
478 sk->sk_protocol = proto;
479 sk->sk_state = BT_OPEN;
481 sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT;
483 setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk);
485 bt_sock_link(&sco_sk_list, sk);
489 static int sco_sock_create(struct net *net, struct socket *sock, int protocol,
494 BT_DBG("sock %p", sock);
496 sock->state = SS_UNCONNECTED;
498 if (sock->type != SOCK_SEQPACKET)
499 return -ESOCKTNOSUPPORT;
501 sock->ops = &sco_sock_ops;
503 sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern);
507 sco_sock_init(sk, NULL);
511 static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
513 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
514 struct sock *sk = sock->sk;
517 BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr);
519 if (!addr || addr->sa_family != AF_BLUETOOTH)
524 if (sk->sk_state != BT_OPEN) {
529 if (sk->sk_type != SOCK_SEQPACKET) {
534 bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr);
536 sk->sk_state = BT_BOUND;
543 static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
545 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
546 struct sock *sk = sock->sk;
551 if (alen < sizeof(struct sockaddr_sco) ||
552 addr->sa_family != AF_BLUETOOTH)
555 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND)
558 if (sk->sk_type != SOCK_SEQPACKET)
563 /* Set destination address and psm */
564 bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr);
566 err = sco_connect(sk);
570 err = bt_sock_wait_state(sk, BT_CONNECTED,
571 sock_sndtimeo(sk, flags & O_NONBLOCK));
578 static int sco_sock_listen(struct socket *sock, int backlog)
580 struct sock *sk = sock->sk;
581 bdaddr_t *src = &sco_pi(sk)->src;
584 BT_DBG("sk %p backlog %d", sk, backlog);
588 if (sk->sk_state != BT_BOUND) {
593 if (sk->sk_type != SOCK_SEQPACKET) {
598 write_lock(&sco_sk_list.lock);
600 if (__sco_get_sock_listen_by_addr(src)) {
605 sk->sk_max_ack_backlog = backlog;
606 sk->sk_ack_backlog = 0;
608 sk->sk_state = BT_LISTEN;
611 write_unlock(&sco_sk_list.lock);
618 static int sco_sock_accept(struct socket *sock, struct socket *newsock, int flags)
620 DEFINE_WAIT_FUNC(wait, woken_wake_function);
621 struct sock *sk = sock->sk, *ch;
627 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
629 BT_DBG("sk %p timeo %ld", sk, timeo);
631 /* Wait for an incoming connection. (wake-one). */
632 add_wait_queue_exclusive(sk_sleep(sk), &wait);
634 if (sk->sk_state != BT_LISTEN) {
639 ch = bt_accept_dequeue(sk, newsock);
648 if (signal_pending(current)) {
649 err = sock_intr_errno(timeo);
655 timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo);
658 remove_wait_queue(sk_sleep(sk), &wait);
663 newsock->state = SS_CONNECTED;
665 BT_DBG("new socket %p", ch);
672 static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
674 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
675 struct sock *sk = sock->sk;
677 BT_DBG("sock %p, sk %p", sock, sk);
679 addr->sa_family = AF_BLUETOOTH;
680 *len = sizeof(struct sockaddr_sco);
683 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst);
685 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src);
690 static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg,
693 struct sock *sk = sock->sk;
696 BT_DBG("sock %p, sk %p", sock, sk);
698 err = sock_error(sk);
702 if (msg->msg_flags & MSG_OOB)
707 if (sk->sk_state == BT_CONNECTED)
708 err = sco_send_frame(sk, msg, len);
716 static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting)
718 struct hci_dev *hdev = conn->hdev;
720 BT_DBG("conn %p", conn);
722 conn->state = BT_CONFIG;
724 if (!lmp_esco_capable(hdev)) {
725 struct hci_cp_accept_conn_req cp;
727 bacpy(&cp.bdaddr, &conn->dst);
728 cp.role = 0x00; /* Ignored */
730 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
732 struct hci_cp_accept_sync_conn_req cp;
734 bacpy(&cp.bdaddr, &conn->dst);
735 cp.pkt_type = cpu_to_le16(conn->pkt_type);
737 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
738 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
739 cp.content_format = cpu_to_le16(setting);
741 switch (setting & SCO_AIRMODE_MASK) {
742 case SCO_AIRMODE_TRANSP:
743 if (conn->pkt_type & ESCO_2EV3)
744 cp.max_latency = cpu_to_le16(0x0008);
746 cp.max_latency = cpu_to_le16(0x000D);
747 cp.retrans_effort = 0x02;
749 case SCO_AIRMODE_CVSD:
750 cp.max_latency = cpu_to_le16(0xffff);
751 cp.retrans_effort = 0xff;
755 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
760 static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg,
761 size_t len, int flags)
763 struct sock *sk = sock->sk;
764 struct sco_pinfo *pi = sco_pi(sk);
768 if (sk->sk_state == BT_CONNECT2 &&
769 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
770 sco_conn_defer_accept(pi->conn->hcon, pi->setting);
771 sk->sk_state = BT_CONFIG;
779 return bt_sock_recvmsg(sock, msg, len, flags);
782 static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
784 struct sock *sk = sock->sk;
786 struct bt_voice voice;
796 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
801 if (get_user(opt, (u32 __user *) optval)) {
807 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
809 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
813 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND &&
814 sk->sk_state != BT_CONNECT2) {
819 voice.setting = sco_pi(sk)->setting;
821 len = min_t(unsigned int, sizeof(voice), optlen);
822 if (copy_from_user((char *) &voice, optval, len)) {
827 /* Explicitly check for these values */
828 if (voice.setting != BT_VOICE_TRANSPARENT &&
829 voice.setting != BT_VOICE_CVSD_16BIT) {
834 sco_pi(sk)->setting = voice.setting;
846 static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
848 struct sock *sk = sock->sk;
849 struct sco_options opts;
850 struct sco_conninfo cinfo;
855 if (get_user(len, optlen))
862 if (sk->sk_state != BT_CONNECTED &&
863 !(sk->sk_state == BT_CONNECT2 &&
864 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
869 opts.mtu = sco_pi(sk)->conn->mtu;
871 BT_DBG("mtu %d", opts.mtu);
873 len = min_t(unsigned int, len, sizeof(opts));
874 if (copy_to_user(optval, (char *)&opts, len))
880 if (sk->sk_state != BT_CONNECTED &&
881 !(sk->sk_state == BT_CONNECT2 &&
882 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
887 memset(&cinfo, 0, sizeof(cinfo));
888 cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle;
889 memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3);
891 len = min_t(unsigned int, len, sizeof(cinfo));
892 if (copy_to_user(optval, (char *)&cinfo, len))
906 static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
908 struct sock *sk = sock->sk;
910 struct bt_voice voice;
914 if (level == SOL_SCO)
915 return sco_sock_getsockopt_old(sock, optname, optval, optlen);
917 if (get_user(len, optlen))
925 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
930 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
931 (u32 __user *) optval))
937 voice.setting = sco_pi(sk)->setting;
939 len = min_t(unsigned int, len, sizeof(voice));
940 if (copy_to_user(optval, (char *)&voice, len))
954 static int sco_sock_shutdown(struct socket *sock, int how)
956 struct sock *sk = sock->sk;
959 BT_DBG("sock %p, sk %p", sock, sk);
965 if (!sk->sk_shutdown) {
966 sk->sk_shutdown = SHUTDOWN_MASK;
967 sco_sock_clear_timer(sk);
968 __sco_sock_close(sk);
970 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
971 !(current->flags & PF_EXITING))
972 err = bt_sock_wait_state(sk, BT_CLOSED,
979 static int sco_sock_release(struct socket *sock)
981 struct sock *sk = sock->sk;
984 BT_DBG("sock %p, sk %p", sock, sk);
991 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
992 !(current->flags & PF_EXITING)) {
994 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
1003 static void sco_conn_ready(struct sco_conn *conn)
1005 struct sock *parent;
1006 struct sock *sk = conn->sk;
1008 BT_DBG("conn %p", conn);
1011 sco_sock_clear_timer(sk);
1013 sk->sk_state = BT_CONNECTED;
1014 sk->sk_state_change(sk);
1017 sco_conn_lock(conn);
1019 parent = sco_get_sock_listen(&conn->hcon->src);
1021 sco_conn_unlock(conn);
1025 bh_lock_sock(parent);
1027 sk = sco_sock_alloc(sock_net(parent), NULL,
1028 BTPROTO_SCO, GFP_ATOMIC, 0);
1030 bh_unlock_sock(parent);
1031 sco_conn_unlock(conn);
1035 sco_sock_init(sk, parent);
1037 bacpy(&sco_pi(sk)->src, &conn->hcon->src);
1038 bacpy(&sco_pi(sk)->dst, &conn->hcon->dst);
1040 hci_conn_hold(conn->hcon);
1041 __sco_chan_add(conn, sk, parent);
1043 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
1044 sk->sk_state = BT_CONNECT2;
1046 sk->sk_state = BT_CONNECTED;
1048 /* Wake up parent */
1049 parent->sk_data_ready(parent);
1051 bh_unlock_sock(parent);
1053 sco_conn_unlock(conn);
1057 /* ----- SCO interface with lower layer (HCI) ----- */
1058 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags)
1063 BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr);
1065 /* Find listening sockets */
1066 read_lock(&sco_sk_list.lock);
1067 sk_for_each(sk, &sco_sk_list.head) {
1068 if (sk->sk_state != BT_LISTEN)
1071 if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) ||
1072 !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) {
1073 lm |= HCI_LM_ACCEPT;
1075 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))
1076 *flags |= HCI_PROTO_DEFER;
1080 read_unlock(&sco_sk_list.lock);
1085 static void sco_connect_cfm(struct hci_conn *hcon, __u8 status)
1087 if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
1090 BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status);
1093 struct sco_conn *conn;
1095 conn = sco_conn_add(hcon);
1097 sco_conn_ready(conn);
1099 sco_conn_del(hcon, bt_to_errno(status));
1102 static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason)
1104 if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
1107 BT_DBG("hcon %p reason %d", hcon, reason);
1109 sco_conn_del(hcon, bt_to_errno(reason));
1112 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
1114 struct sco_conn *conn = hcon->sco_data;
1119 BT_DBG("conn %p len %d", conn, skb->len);
1122 sco_recv_frame(conn, skb);
1130 static struct hci_cb sco_cb = {
1132 .connect_cfm = sco_connect_cfm,
1133 .disconn_cfm = sco_disconn_cfm,
1136 static int sco_debugfs_show(struct seq_file *f, void *p)
1140 read_lock(&sco_sk_list.lock);
1142 sk_for_each(sk, &sco_sk_list.head) {
1143 seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src,
1144 &sco_pi(sk)->dst, sk->sk_state);
1147 read_unlock(&sco_sk_list.lock);
1152 static int sco_debugfs_open(struct inode *inode, struct file *file)
1154 return single_open(file, sco_debugfs_show, inode->i_private);
1157 static const struct file_operations sco_debugfs_fops = {
1158 .open = sco_debugfs_open,
1160 .llseek = seq_lseek,
1161 .release = single_release,
1164 static struct dentry *sco_debugfs;
1166 static const struct proto_ops sco_sock_ops = {
1167 .family = PF_BLUETOOTH,
1168 .owner = THIS_MODULE,
1169 .release = sco_sock_release,
1170 .bind = sco_sock_bind,
1171 .connect = sco_sock_connect,
1172 .listen = sco_sock_listen,
1173 .accept = sco_sock_accept,
1174 .getname = sco_sock_getname,
1175 .sendmsg = sco_sock_sendmsg,
1176 .recvmsg = sco_sock_recvmsg,
1177 .poll = bt_sock_poll,
1178 .ioctl = bt_sock_ioctl,
1179 .mmap = sock_no_mmap,
1180 .socketpair = sock_no_socketpair,
1181 .shutdown = sco_sock_shutdown,
1182 .setsockopt = sco_sock_setsockopt,
1183 .getsockopt = sco_sock_getsockopt
1186 static const struct net_proto_family sco_sock_family_ops = {
1187 .family = PF_BLUETOOTH,
1188 .owner = THIS_MODULE,
1189 .create = sco_sock_create,
1192 int __init sco_init(void)
1196 BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr));
1198 err = proto_register(&sco_proto, 0);
1202 err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops);
1204 BT_ERR("SCO socket registration failed");
1208 err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL);
1210 BT_ERR("Failed to create SCO proc file");
1211 bt_sock_unregister(BTPROTO_SCO);
1215 BT_INFO("SCO socket layer initialized");
1217 hci_register_cb(&sco_cb);
1219 if (IS_ERR_OR_NULL(bt_debugfs))
1222 sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs,
1223 NULL, &sco_debugfs_fops);
1228 proto_unregister(&sco_proto);
1234 bt_procfs_cleanup(&init_net, "sco");
1236 debugfs_remove(sco_debugfs);
1238 hci_unregister_cb(&sco_cb);
1240 bt_sock_unregister(BTPROTO_SCO);
1242 proto_unregister(&sco_proto);
1245 module_param(disable_esco, bool, 0644);
1246 MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation");