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>
30 #include <linux/sched/signal.h>
32 #include <net/bluetooth/bluetooth.h>
33 #include <net/bluetooth/hci_core.h>
34 #include <net/bluetooth/sco.h>
36 static bool disable_esco;
38 static const struct proto_ops sco_sock_ops;
40 static struct bt_sock_list sco_sk_list = {
41 .lock = __RW_LOCK_UNLOCKED(sco_sk_list.lock)
44 /* ---- SCO connections ---- */
46 struct hci_conn *hcon;
51 struct delayed_work timeout_work;
56 #define sco_conn_lock(c) spin_lock(&c->lock);
57 #define sco_conn_unlock(c) spin_unlock(&c->lock);
59 static void sco_sock_close(struct sock *sk);
60 static void sco_sock_kill(struct sock *sk);
62 /* ----- SCO socket info ----- */
63 #define sco_pi(sk) ((struct sco_pinfo *) sk)
71 struct sco_conn *conn;
74 /* ---- SCO timers ---- */
75 #define SCO_CONN_TIMEOUT (HZ * 40)
76 #define SCO_DISCONN_TIMEOUT (HZ * 2)
78 static void sco_sock_timeout(struct work_struct *work)
80 struct sco_conn *conn = container_of(work, struct sco_conn,
88 sco_conn_unlock(conn);
93 BT_DBG("sock %p state %d", sk, sk->sk_state);
96 sk->sk_err = ETIMEDOUT;
97 sk->sk_state_change(sk);
103 static void sco_sock_set_timer(struct sock *sk, long timeout)
105 if (!sco_pi(sk)->conn)
108 BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout);
109 cancel_delayed_work(&sco_pi(sk)->conn->timeout_work);
110 schedule_delayed_work(&sco_pi(sk)->conn->timeout_work, timeout);
113 static void sco_sock_clear_timer(struct sock *sk)
115 if (!sco_pi(sk)->conn)
118 BT_DBG("sock %p state %d", sk, sk->sk_state);
119 cancel_delayed_work(&sco_pi(sk)->conn->timeout_work);
122 /* ---- SCO connections ---- */
123 static struct sco_conn *sco_conn_add(struct hci_conn *hcon)
125 struct hci_dev *hdev = hcon->hdev;
126 struct sco_conn *conn = hcon->sco_data;
131 conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL);
135 spin_lock_init(&conn->lock);
136 INIT_DELAYED_WORK(&conn->timeout_work, sco_sock_timeout);
138 hcon->sco_data = conn;
141 if (hdev->sco_mtu > 0)
142 conn->mtu = hdev->sco_mtu;
146 BT_DBG("hcon %p conn %p", hcon, conn);
152 * Must be called on the locked socket. */
153 static void sco_chan_del(struct sock *sk, int err)
155 struct sco_conn *conn;
157 conn = sco_pi(sk)->conn;
159 BT_DBG("sk %p, conn %p, err %d", sk, conn, err);
164 sco_pi(sk)->conn = NULL;
165 sco_conn_unlock(conn);
168 hci_conn_drop(conn->hcon);
171 sk->sk_state = BT_CLOSED;
173 sk->sk_state_change(sk);
175 sock_set_flag(sk, SOCK_ZAPPED);
178 static void sco_conn_del(struct hci_conn *hcon, int err)
180 struct sco_conn *conn = hcon->sco_data;
186 BT_DBG("hcon %p conn %p, err %d", hcon, conn, err);
191 sco_conn_unlock(conn);
196 sco_sock_clear_timer(sk);
197 sco_chan_del(sk, err);
202 /* Ensure no more work items will run before freeing conn. */
203 cancel_delayed_work_sync(&conn->timeout_work);
205 hcon->sco_data = NULL;
209 static void __sco_chan_add(struct sco_conn *conn, struct sock *sk,
212 BT_DBG("conn %p", conn);
214 sco_pi(sk)->conn = conn;
218 bt_accept_enqueue(parent, sk, true);
221 static int sco_chan_add(struct sco_conn *conn, struct sock *sk,
230 __sco_chan_add(conn, sk, parent);
232 sco_conn_unlock(conn);
236 static int sco_connect(struct hci_dev *hdev, struct sock *sk)
238 struct sco_conn *conn;
239 struct hci_conn *hcon;
242 BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst);
244 if (lmp_esco_capable(hdev) && !disable_esco)
249 if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT &&
250 (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev)))
253 hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst,
254 sco_pi(sk)->setting);
256 return PTR_ERR(hcon);
258 conn = sco_conn_add(hcon);
264 /* Update source addr of the socket */
265 bacpy(&sco_pi(sk)->src, &hcon->src);
267 err = sco_chan_add(conn, sk, NULL);
271 if (hcon->state == BT_CONNECTED) {
272 sco_sock_clear_timer(sk);
273 sk->sk_state = BT_CONNECTED;
275 sk->sk_state = BT_CONNECT;
276 sco_sock_set_timer(sk, sk->sk_sndtimeo);
282 static int sco_send_frame(struct sock *sk, struct sk_buff *skb)
284 struct sco_conn *conn = sco_pi(sk)->conn;
287 /* Check outgoing MTU */
291 BT_DBG("sk %p len %d", sk, 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 sco_conn_lock(sco_pi(sk)->conn);
419 hci_conn_drop(sco_pi(sk)->conn->hcon);
420 sco_pi(sk)->conn->hcon = NULL;
421 sco_conn_unlock(sco_pi(sk)->conn);
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);
447 static void sco_sock_init(struct sock *sk, struct sock *parent)
452 sk->sk_type = parent->sk_type;
453 bt_sk(sk)->flags = bt_sk(parent)->flags;
454 security_sk_clone(parent, sk);
458 static struct proto sco_proto = {
460 .owner = THIS_MODULE,
461 .obj_size = sizeof(struct sco_pinfo)
464 static struct sock *sco_sock_alloc(struct net *net, struct socket *sock,
465 int proto, gfp_t prio, int kern)
469 sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern);
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 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, kern);
508 sco_sock_init(sk, NULL);
512 static int sco_sock_bind(struct socket *sock, struct sockaddr *addr,
515 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
516 struct sock *sk = sock->sk;
519 BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr);
521 if (!addr || addr_len < sizeof(struct sockaddr_sco) ||
522 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;
550 struct hci_dev *hdev;
555 if (alen < sizeof(struct sockaddr_sco) ||
556 addr->sa_family != AF_BLUETOOTH)
560 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) {
565 if (sk->sk_type != SOCK_SEQPACKET) {
570 hdev = hci_get_route(&sa->sco_bdaddr, &sco_pi(sk)->src, BDADDR_BREDR);
577 /* Set destination address and psm */
578 bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr);
580 err = sco_connect(hdev, sk);
581 hci_dev_unlock(hdev);
586 err = bt_sock_wait_state(sk, BT_CONNECTED,
587 sock_sndtimeo(sk, flags & O_NONBLOCK));
594 static int sco_sock_listen(struct socket *sock, int backlog)
596 struct sock *sk = sock->sk;
597 bdaddr_t *src = &sco_pi(sk)->src;
600 BT_DBG("sk %p backlog %d", sk, backlog);
604 if (sk->sk_state != BT_BOUND) {
609 if (sk->sk_type != SOCK_SEQPACKET) {
614 write_lock(&sco_sk_list.lock);
616 if (__sco_get_sock_listen_by_addr(src)) {
621 sk->sk_max_ack_backlog = backlog;
622 sk->sk_ack_backlog = 0;
624 sk->sk_state = BT_LISTEN;
627 write_unlock(&sco_sk_list.lock);
634 static int sco_sock_accept(struct socket *sock, struct socket *newsock,
635 int flags, bool kern)
637 DEFINE_WAIT_FUNC(wait, woken_wake_function);
638 struct sock *sk = sock->sk, *ch;
644 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
646 BT_DBG("sk %p timeo %ld", sk, timeo);
648 /* Wait for an incoming connection. (wake-one). */
649 add_wait_queue_exclusive(sk_sleep(sk), &wait);
651 if (sk->sk_state != BT_LISTEN) {
656 ch = bt_accept_dequeue(sk, newsock);
665 if (signal_pending(current)) {
666 err = sock_intr_errno(timeo);
672 timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo);
675 remove_wait_queue(sk_sleep(sk), &wait);
680 newsock->state = SS_CONNECTED;
682 BT_DBG("new socket %p", ch);
689 static int sco_sock_getname(struct socket *sock, struct sockaddr *addr,
692 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
693 struct sock *sk = sock->sk;
695 BT_DBG("sock %p, sk %p", sock, sk);
697 addr->sa_family = AF_BLUETOOTH;
698 *len = sizeof(struct sockaddr_sco);
701 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst);
703 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src);
708 static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg,
711 struct sock *sk = sock->sk;
715 BT_DBG("sock %p, sk %p", sock, sk);
717 err = sock_error(sk);
721 if (msg->msg_flags & MSG_OOB)
724 skb = bt_skb_sendmsg(sk, msg, len, len, 0, 0);
730 if (sk->sk_state == BT_CONNECTED)
731 err = sco_send_frame(sk, skb);
742 static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting)
744 struct hci_dev *hdev = conn->hdev;
746 BT_DBG("conn %p", conn);
748 conn->state = BT_CONFIG;
750 if (!lmp_esco_capable(hdev)) {
751 struct hci_cp_accept_conn_req cp;
753 bacpy(&cp.bdaddr, &conn->dst);
754 cp.role = 0x00; /* Ignored */
756 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
758 struct hci_cp_accept_sync_conn_req cp;
760 bacpy(&cp.bdaddr, &conn->dst);
761 cp.pkt_type = cpu_to_le16(conn->pkt_type);
763 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
764 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
765 cp.content_format = cpu_to_le16(setting);
767 switch (setting & SCO_AIRMODE_MASK) {
768 case SCO_AIRMODE_TRANSP:
769 if (conn->pkt_type & ESCO_2EV3)
770 cp.max_latency = cpu_to_le16(0x0008);
772 cp.max_latency = cpu_to_le16(0x000D);
773 cp.retrans_effort = 0x02;
775 case SCO_AIRMODE_CVSD:
776 cp.max_latency = cpu_to_le16(0xffff);
777 cp.retrans_effort = 0xff;
780 /* use CVSD settings as fallback */
781 cp.max_latency = cpu_to_le16(0xffff);
782 cp.retrans_effort = 0xff;
786 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
791 static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg,
792 size_t len, int flags)
794 struct sock *sk = sock->sk;
795 struct sco_pinfo *pi = sco_pi(sk);
799 if (sk->sk_state == BT_CONNECT2 &&
800 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
801 sco_conn_defer_accept(pi->conn->hcon, pi->setting);
802 sk->sk_state = BT_CONFIG;
810 return bt_sock_recvmsg(sock, msg, len, flags);
813 static int sco_sock_setsockopt(struct socket *sock, int level, int optname,
814 char __user *optval, unsigned int optlen)
816 struct sock *sk = sock->sk;
818 struct bt_voice voice;
828 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
833 if (get_user(opt, (u32 __user *) optval)) {
839 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
841 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
845 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND &&
846 sk->sk_state != BT_CONNECT2) {
851 voice.setting = sco_pi(sk)->setting;
853 len = min_t(unsigned int, sizeof(voice), optlen);
854 if (copy_from_user((char *)&voice, optval, len)) {
859 /* Explicitly check for these values */
860 if (voice.setting != BT_VOICE_TRANSPARENT &&
861 voice.setting != BT_VOICE_CVSD_16BIT) {
866 sco_pi(sk)->setting = voice.setting;
878 static int sco_sock_getsockopt_old(struct socket *sock, int optname,
879 char __user *optval, int __user *optlen)
881 struct sock *sk = sock->sk;
882 struct sco_options opts;
883 struct sco_conninfo cinfo;
888 if (get_user(len, optlen))
895 if (sk->sk_state != BT_CONNECTED &&
896 !(sk->sk_state == BT_CONNECT2 &&
897 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
902 opts.mtu = sco_pi(sk)->conn->mtu;
904 BT_DBG("mtu %d", opts.mtu);
906 len = min_t(unsigned int, len, sizeof(opts));
907 if (copy_to_user(optval, (char *)&opts, len))
913 if (sk->sk_state != BT_CONNECTED &&
914 !(sk->sk_state == BT_CONNECT2 &&
915 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
920 memset(&cinfo, 0, sizeof(cinfo));
921 cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle;
922 memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3);
924 len = min_t(unsigned int, len, sizeof(cinfo));
925 if (copy_to_user(optval, (char *)&cinfo, len))
939 static int sco_sock_getsockopt(struct socket *sock, int level, int optname,
940 char __user *optval, int __user *optlen)
942 struct sock *sk = sock->sk;
944 struct bt_voice voice;
948 if (level == SOL_SCO)
949 return sco_sock_getsockopt_old(sock, optname, optval, optlen);
951 if (get_user(len, optlen))
959 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
964 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
965 (u32 __user *)optval))
971 voice.setting = sco_pi(sk)->setting;
973 len = min_t(unsigned int, len, sizeof(voice));
974 if (copy_to_user(optval, (char *)&voice, len))
988 static int sco_sock_shutdown(struct socket *sock, int how)
990 struct sock *sk = sock->sk;
993 BT_DBG("sock %p, sk %p", sock, sk);
1001 if (!sk->sk_shutdown) {
1002 sk->sk_shutdown = SHUTDOWN_MASK;
1003 sco_sock_clear_timer(sk);
1004 __sco_sock_close(sk);
1006 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
1007 !(current->flags & PF_EXITING))
1008 err = bt_sock_wait_state(sk, BT_CLOSED,
1018 static int sco_sock_release(struct socket *sock)
1020 struct sock *sk = sock->sk;
1023 BT_DBG("sock %p, sk %p", sock, sk);
1030 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
1031 !(current->flags & PF_EXITING)) {
1033 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
1042 static void sco_conn_ready(struct sco_conn *conn)
1044 struct sock *parent;
1045 struct sock *sk = conn->sk;
1047 BT_DBG("conn %p", conn);
1050 sco_sock_clear_timer(sk);
1052 sk->sk_state = BT_CONNECTED;
1053 sk->sk_state_change(sk);
1056 sco_conn_lock(conn);
1059 sco_conn_unlock(conn);
1063 parent = sco_get_sock_listen(&conn->hcon->src);
1065 sco_conn_unlock(conn);
1069 bh_lock_sock(parent);
1071 sk = sco_sock_alloc(sock_net(parent), NULL,
1072 BTPROTO_SCO, GFP_ATOMIC, 0);
1074 bh_unlock_sock(parent);
1075 sco_conn_unlock(conn);
1079 sco_sock_init(sk, parent);
1081 bacpy(&sco_pi(sk)->src, &conn->hcon->src);
1082 bacpy(&sco_pi(sk)->dst, &conn->hcon->dst);
1084 hci_conn_hold(conn->hcon);
1085 __sco_chan_add(conn, sk, parent);
1087 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
1088 sk->sk_state = BT_CONNECT2;
1090 sk->sk_state = BT_CONNECTED;
1092 /* Wake up parent */
1093 parent->sk_data_ready(parent);
1095 bh_unlock_sock(parent);
1097 sco_conn_unlock(conn);
1101 /* ----- SCO interface with lower layer (HCI) ----- */
1102 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags)
1107 BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr);
1109 /* Find listening sockets */
1110 read_lock(&sco_sk_list.lock);
1111 sk_for_each(sk, &sco_sk_list.head) {
1112 if (sk->sk_state != BT_LISTEN)
1115 if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) ||
1116 !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) {
1117 lm |= HCI_LM_ACCEPT;
1119 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))
1120 *flags |= HCI_PROTO_DEFER;
1124 read_unlock(&sco_sk_list.lock);
1129 static void sco_connect_cfm(struct hci_conn *hcon, __u8 status)
1131 if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
1134 BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status);
1137 struct sco_conn *conn;
1139 conn = sco_conn_add(hcon);
1141 sco_conn_ready(conn);
1143 sco_conn_del(hcon, bt_to_errno(status));
1146 static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason)
1148 if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
1151 BT_DBG("hcon %p reason %d", hcon, reason);
1153 sco_conn_del(hcon, bt_to_errno(reason));
1156 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
1158 struct sco_conn *conn = hcon->sco_data;
1163 BT_DBG("conn %p len %d", conn, skb->len);
1166 sco_recv_frame(conn, skb);
1174 static struct hci_cb sco_cb = {
1176 .connect_cfm = sco_connect_cfm,
1177 .disconn_cfm = sco_disconn_cfm,
1180 static int sco_debugfs_show(struct seq_file *f, void *p)
1184 read_lock(&sco_sk_list.lock);
1186 sk_for_each(sk, &sco_sk_list.head) {
1187 seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src,
1188 &sco_pi(sk)->dst, sk->sk_state);
1191 read_unlock(&sco_sk_list.lock);
1196 static int sco_debugfs_open(struct inode *inode, struct file *file)
1198 return single_open(file, sco_debugfs_show, inode->i_private);
1201 static const struct file_operations sco_debugfs_fops = {
1202 .open = sco_debugfs_open,
1204 .llseek = seq_lseek,
1205 .release = single_release,
1208 static struct dentry *sco_debugfs;
1210 static const struct proto_ops sco_sock_ops = {
1211 .family = PF_BLUETOOTH,
1212 .owner = THIS_MODULE,
1213 .release = sco_sock_release,
1214 .bind = sco_sock_bind,
1215 .connect = sco_sock_connect,
1216 .listen = sco_sock_listen,
1217 .accept = sco_sock_accept,
1218 .getname = sco_sock_getname,
1219 .sendmsg = sco_sock_sendmsg,
1220 .recvmsg = sco_sock_recvmsg,
1221 .poll = bt_sock_poll,
1222 .ioctl = bt_sock_ioctl,
1223 .mmap = sock_no_mmap,
1224 .socketpair = sock_no_socketpair,
1225 .shutdown = sco_sock_shutdown,
1226 .setsockopt = sco_sock_setsockopt,
1227 .getsockopt = sco_sock_getsockopt
1230 static const struct net_proto_family sco_sock_family_ops = {
1231 .family = PF_BLUETOOTH,
1232 .owner = THIS_MODULE,
1233 .create = sco_sock_create,
1236 int __init sco_init(void)
1240 BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr));
1242 err = proto_register(&sco_proto, 0);
1246 err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops);
1248 BT_ERR("SCO socket registration failed");
1252 err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL);
1254 BT_ERR("Failed to create SCO proc file");
1255 bt_sock_unregister(BTPROTO_SCO);
1259 BT_INFO("SCO socket layer initialized");
1261 hci_register_cb(&sco_cb);
1263 if (IS_ERR_OR_NULL(bt_debugfs))
1266 sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs,
1267 NULL, &sco_debugfs_fops);
1272 proto_unregister(&sco_proto);
1278 bt_procfs_cleanup(&init_net, "sco");
1280 debugfs_remove(sco_debugfs);
1282 hci_unregister_cb(&sco_cb);
1284 bt_sock_unregister(BTPROTO_SCO);
1286 proto_unregister(&sco_proto);
1289 module_param(disable_esco, bool, 0644);
1290 MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation");