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, void *buf, int len,
273 unsigned int msg_flags)
275 struct sco_conn *conn = sco_pi(sk)->conn;
279 /* Check outgoing MTU */
283 BT_DBG("sk %p len %d", sk, len);
285 skb = bt_skb_send_alloc(sk, len, msg_flags & MSG_DONTWAIT, &err);
289 memcpy(skb_put(skb, len), buf, len);
290 hci_send_sco(conn->hcon, skb);
295 static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb)
301 sco_conn_unlock(conn);
306 BT_DBG("sk %p len %d", sk, skb->len);
308 if (sk->sk_state != BT_CONNECTED)
311 if (!sock_queue_rcv_skb(sk, skb))
318 /* -------- Socket interface ---------- */
319 static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba)
323 sk_for_each(sk, &sco_sk_list.head) {
324 if (sk->sk_state != BT_LISTEN)
327 if (!bacmp(&sco_pi(sk)->src, ba))
334 /* Find socket listening on source bdaddr.
335 * Returns closest match.
337 static struct sock *sco_get_sock_listen(bdaddr_t *src)
339 struct sock *sk = NULL, *sk1 = NULL;
341 read_lock(&sco_sk_list.lock);
343 sk_for_each(sk, &sco_sk_list.head) {
344 if (sk->sk_state != BT_LISTEN)
348 if (!bacmp(&sco_pi(sk)->src, src))
352 if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY))
356 read_unlock(&sco_sk_list.lock);
358 return sk ? sk : sk1;
361 static void sco_sock_destruct(struct sock *sk)
365 skb_queue_purge(&sk->sk_receive_queue);
366 skb_queue_purge(&sk->sk_write_queue);
369 static void sco_sock_cleanup_listen(struct sock *parent)
373 BT_DBG("parent %p", parent);
375 /* Close not yet accepted channels */
376 while ((sk = bt_accept_dequeue(parent, NULL))) {
381 parent->sk_state = BT_CLOSED;
382 sock_set_flag(parent, SOCK_ZAPPED);
385 /* Kill socket (only if zapped and orphan)
386 * Must be called on unlocked socket.
388 static void sco_sock_kill(struct sock *sk)
390 if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
393 BT_DBG("sk %p state %d", sk, sk->sk_state);
395 /* Kill poor orphan */
396 bt_sock_unlink(&sco_sk_list, sk);
397 sock_set_flag(sk, SOCK_DEAD);
401 static void __sco_sock_close(struct sock *sk)
403 BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
405 switch (sk->sk_state) {
407 sco_sock_cleanup_listen(sk);
412 if (sco_pi(sk)->conn->hcon) {
413 sk->sk_state = BT_DISCONN;
414 sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT);
415 sco_conn_lock(sco_pi(sk)->conn);
416 hci_conn_drop(sco_pi(sk)->conn->hcon);
417 sco_pi(sk)->conn->hcon = NULL;
418 sco_conn_unlock(sco_pi(sk)->conn);
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);
444 static void sco_sock_init(struct sock *sk, struct sock *parent)
449 sk->sk_type = parent->sk_type;
450 bt_sk(sk)->flags = bt_sk(parent)->flags;
451 security_sk_clone(parent, sk);
455 static struct proto sco_proto = {
457 .owner = THIS_MODULE,
458 .obj_size = sizeof(struct sco_pinfo)
461 static struct sock *sco_sock_alloc(struct net *net, struct socket *sock,
462 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,
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,
625 DEFINE_WAIT_FUNC(wait, woken_wake_function);
626 struct sock *sk = sock->sk, *ch;
632 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
634 BT_DBG("sk %p timeo %ld", sk, timeo);
636 /* Wait for an incoming connection. (wake-one). */
637 add_wait_queue_exclusive(sk_sleep(sk), &wait);
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);
660 timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo);
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,
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 socket *sock, struct msghdr *msg,
699 struct sock *sk = sock->sk;
703 BT_DBG("sock %p, sk %p", sock, sk);
705 err = sock_error(sk);
709 if (msg->msg_flags & MSG_OOB)
712 buf = kmalloc(len, GFP_KERNEL);
716 if (memcpy_from_msg(buf, msg, len)) {
723 if (sk->sk_state == BT_CONNECTED)
724 err = sco_send_frame(sk, buf, len, msg->msg_flags);
733 static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting)
735 struct hci_dev *hdev = conn->hdev;
737 BT_DBG("conn %p", conn);
739 conn->state = BT_CONFIG;
741 if (!lmp_esco_capable(hdev)) {
742 struct hci_cp_accept_conn_req cp;
744 bacpy(&cp.bdaddr, &conn->dst);
745 cp.role = 0x00; /* Ignored */
747 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
749 struct hci_cp_accept_sync_conn_req cp;
751 bacpy(&cp.bdaddr, &conn->dst);
752 cp.pkt_type = cpu_to_le16(conn->pkt_type);
754 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
755 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
756 cp.content_format = cpu_to_le16(setting);
758 switch (setting & SCO_AIRMODE_MASK) {
759 case SCO_AIRMODE_TRANSP:
760 if (conn->pkt_type & ESCO_2EV3)
761 cp.max_latency = cpu_to_le16(0x0008);
763 cp.max_latency = cpu_to_le16(0x000D);
764 cp.retrans_effort = 0x02;
766 case SCO_AIRMODE_CVSD:
767 cp.max_latency = cpu_to_le16(0xffff);
768 cp.retrans_effort = 0xff;
771 /* use CVSD settings as fallback */
772 cp.max_latency = cpu_to_le16(0xffff);
773 cp.retrans_effort = 0xff;
777 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
782 static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg,
783 size_t len, int flags)
785 struct sock *sk = sock->sk;
786 struct sco_pinfo *pi = sco_pi(sk);
790 if (sk->sk_state == BT_CONNECT2 &&
791 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
792 sco_conn_defer_accept(pi->conn->hcon, pi->setting);
793 sk->sk_state = BT_CONFIG;
801 return bt_sock_recvmsg(sock, msg, len, flags);
804 static int sco_sock_setsockopt(struct socket *sock, int level, int optname,
805 char __user *optval, unsigned int optlen)
807 struct sock *sk = sock->sk;
809 struct bt_voice voice;
819 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
824 if (get_user(opt, (u32 __user *) optval)) {
830 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
832 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
836 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND &&
837 sk->sk_state != BT_CONNECT2) {
842 voice.setting = sco_pi(sk)->setting;
844 len = min_t(unsigned int, sizeof(voice), optlen);
845 if (copy_from_user((char *)&voice, optval, len)) {
850 /* Explicitly check for these values */
851 if (voice.setting != BT_VOICE_TRANSPARENT &&
852 voice.setting != BT_VOICE_CVSD_16BIT) {
857 sco_pi(sk)->setting = voice.setting;
869 static int sco_sock_getsockopt_old(struct socket *sock, int optname,
870 char __user *optval, int __user *optlen)
872 struct sock *sk = sock->sk;
873 struct sco_options opts;
874 struct sco_conninfo cinfo;
879 if (get_user(len, optlen))
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 opts.mtu = sco_pi(sk)->conn->mtu;
895 BT_DBG("mtu %d", opts.mtu);
897 len = min_t(unsigned int, len, sizeof(opts));
898 if (copy_to_user(optval, (char *)&opts, len))
904 if (sk->sk_state != BT_CONNECTED &&
905 !(sk->sk_state == BT_CONNECT2 &&
906 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
911 memset(&cinfo, 0, sizeof(cinfo));
912 cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle;
913 memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3);
915 len = min_t(unsigned int, len, sizeof(cinfo));
916 if (copy_to_user(optval, (char *)&cinfo, len))
930 static int sco_sock_getsockopt(struct socket *sock, int level, int optname,
931 char __user *optval, int __user *optlen)
933 struct sock *sk = sock->sk;
935 struct bt_voice voice;
939 if (level == SOL_SCO)
940 return sco_sock_getsockopt_old(sock, optname, optval, optlen);
942 if (get_user(len, optlen))
950 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
955 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
956 (u32 __user *)optval))
962 voice.setting = sco_pi(sk)->setting;
964 len = min_t(unsigned int, len, sizeof(voice));
965 if (copy_to_user(optval, (char *)&voice, len))
979 static int sco_sock_shutdown(struct socket *sock, int how)
981 struct sock *sk = sock->sk;
984 BT_DBG("sock %p, sk %p", sock, sk);
992 if (!sk->sk_shutdown) {
993 sk->sk_shutdown = SHUTDOWN_MASK;
994 sco_sock_clear_timer(sk);
995 __sco_sock_close(sk);
997 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
998 !(current->flags & PF_EXITING))
999 err = bt_sock_wait_state(sk, BT_CLOSED,
1009 static int sco_sock_release(struct socket *sock)
1011 struct sock *sk = sock->sk;
1014 BT_DBG("sock %p, sk %p", sock, sk);
1021 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
1022 !(current->flags & PF_EXITING)) {
1024 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
1033 static void sco_conn_ready(struct sco_conn *conn)
1035 struct sock *parent;
1036 struct sock *sk = conn->sk;
1038 BT_DBG("conn %p", conn);
1041 sco_sock_clear_timer(sk);
1043 sk->sk_state = BT_CONNECTED;
1044 sk->sk_state_change(sk);
1047 sco_conn_lock(conn);
1050 sco_conn_unlock(conn);
1054 parent = sco_get_sock_listen(&conn->hcon->src);
1056 sco_conn_unlock(conn);
1060 bh_lock_sock(parent);
1062 sk = sco_sock_alloc(sock_net(parent), NULL,
1063 BTPROTO_SCO, GFP_ATOMIC, 0);
1065 bh_unlock_sock(parent);
1066 sco_conn_unlock(conn);
1070 sco_sock_init(sk, parent);
1072 bacpy(&sco_pi(sk)->src, &conn->hcon->src);
1073 bacpy(&sco_pi(sk)->dst, &conn->hcon->dst);
1075 hci_conn_hold(conn->hcon);
1076 __sco_chan_add(conn, sk, parent);
1078 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
1079 sk->sk_state = BT_CONNECT2;
1081 sk->sk_state = BT_CONNECTED;
1083 /* Wake up parent */
1084 parent->sk_data_ready(parent);
1086 bh_unlock_sock(parent);
1088 sco_conn_unlock(conn);
1092 /* ----- SCO interface with lower layer (HCI) ----- */
1093 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags)
1098 BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr);
1100 /* Find listening sockets */
1101 read_lock(&sco_sk_list.lock);
1102 sk_for_each(sk, &sco_sk_list.head) {
1103 if (sk->sk_state != BT_LISTEN)
1106 if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) ||
1107 !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) {
1108 lm |= HCI_LM_ACCEPT;
1110 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))
1111 *flags |= HCI_PROTO_DEFER;
1115 read_unlock(&sco_sk_list.lock);
1120 static void sco_connect_cfm(struct hci_conn *hcon, __u8 status)
1122 if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
1125 BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status);
1128 struct sco_conn *conn;
1130 conn = sco_conn_add(hcon);
1132 sco_conn_ready(conn);
1134 sco_conn_del(hcon, bt_to_errno(status));
1137 static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason)
1139 if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
1142 BT_DBG("hcon %p reason %d", hcon, reason);
1144 sco_conn_del(hcon, bt_to_errno(reason));
1147 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
1149 struct sco_conn *conn = hcon->sco_data;
1154 BT_DBG("conn %p len %d", conn, skb->len);
1157 sco_recv_frame(conn, skb);
1165 static struct hci_cb sco_cb = {
1167 .connect_cfm = sco_connect_cfm,
1168 .disconn_cfm = sco_disconn_cfm,
1171 static int sco_debugfs_show(struct seq_file *f, void *p)
1175 read_lock(&sco_sk_list.lock);
1177 sk_for_each(sk, &sco_sk_list.head) {
1178 seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src,
1179 &sco_pi(sk)->dst, sk->sk_state);
1182 read_unlock(&sco_sk_list.lock);
1187 static int sco_debugfs_open(struct inode *inode, struct file *file)
1189 return single_open(file, sco_debugfs_show, inode->i_private);
1192 static const struct file_operations sco_debugfs_fops = {
1193 .open = sco_debugfs_open,
1195 .llseek = seq_lseek,
1196 .release = single_release,
1199 static struct dentry *sco_debugfs;
1201 static const struct proto_ops sco_sock_ops = {
1202 .family = PF_BLUETOOTH,
1203 .owner = THIS_MODULE,
1204 .release = sco_sock_release,
1205 .bind = sco_sock_bind,
1206 .connect = sco_sock_connect,
1207 .listen = sco_sock_listen,
1208 .accept = sco_sock_accept,
1209 .getname = sco_sock_getname,
1210 .sendmsg = sco_sock_sendmsg,
1211 .recvmsg = sco_sock_recvmsg,
1212 .poll = bt_sock_poll,
1213 .ioctl = bt_sock_ioctl,
1214 .mmap = sock_no_mmap,
1215 .socketpair = sock_no_socketpair,
1216 .shutdown = sco_sock_shutdown,
1217 .setsockopt = sco_sock_setsockopt,
1218 .getsockopt = sco_sock_getsockopt
1221 static const struct net_proto_family sco_sock_family_ops = {
1222 .family = PF_BLUETOOTH,
1223 .owner = THIS_MODULE,
1224 .create = sco_sock_create,
1227 int __init sco_init(void)
1231 BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr));
1233 err = proto_register(&sco_proto, 0);
1237 err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops);
1239 BT_ERR("SCO socket registration failed");
1243 err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL);
1245 BT_ERR("Failed to create SCO proc file");
1246 bt_sock_unregister(BTPROTO_SCO);
1250 BT_INFO("SCO socket layer initialized");
1252 hci_register_cb(&sco_cb);
1254 if (IS_ERR_OR_NULL(bt_debugfs))
1257 sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs,
1258 NULL, &sco_debugfs_fops);
1263 proto_unregister(&sco_proto);
1269 bt_procfs_cleanup(&init_net, "sco");
1271 debugfs_remove(sco_debugfs);
1273 hci_unregister_cb(&sco_cb);
1275 bt_sock_unregister(BTPROTO_SCO);
1277 proto_unregister(&sco_proto);
1280 module_param(disable_esco, bool, 0644);
1281 MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation");