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 hci_dev *hdev, struct sock *sk)
213 struct sco_conn *conn;
214 struct hci_conn *hcon;
217 BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst);
219 if (lmp_esco_capable(hdev) && !disable_esco)
224 if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT &&
225 (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev)))
228 hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst,
229 sco_pi(sk)->setting);
231 return PTR_ERR(hcon);
233 conn = sco_conn_add(hcon);
239 /* Update source addr of the socket */
240 bacpy(&sco_pi(sk)->src, &hcon->src);
242 err = sco_chan_add(conn, sk, NULL);
246 if (hcon->state == BT_CONNECTED) {
247 sco_sock_clear_timer(sk);
248 sk->sk_state = BT_CONNECTED;
250 sk->sk_state = BT_CONNECT;
251 sco_sock_set_timer(sk, sk->sk_sndtimeo);
257 static int sco_send_frame(struct sock *sk, struct msghdr *msg, int len)
259 struct sco_conn *conn = sco_pi(sk)->conn;
263 /* Check outgoing MTU */
267 BT_DBG("sk %p len %d", sk, len);
269 skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err);
273 if (memcpy_from_msg(skb_put(skb, len), msg, len)) {
278 hci_send_sco(conn->hcon, skb);
283 static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb)
289 sco_conn_unlock(conn);
294 BT_DBG("sk %p len %d", sk, skb->len);
296 if (sk->sk_state != BT_CONNECTED)
299 if (!sock_queue_rcv_skb(sk, skb))
306 /* -------- Socket interface ---------- */
307 static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba)
311 sk_for_each(sk, &sco_sk_list.head) {
312 if (sk->sk_state != BT_LISTEN)
315 if (!bacmp(&sco_pi(sk)->src, ba))
322 /* Find socket listening on source bdaddr.
323 * Returns closest match.
325 static struct sock *sco_get_sock_listen(bdaddr_t *src)
327 struct sock *sk = NULL, *sk1 = NULL;
329 read_lock(&sco_sk_list.lock);
331 sk_for_each(sk, &sco_sk_list.head) {
332 if (sk->sk_state != BT_LISTEN)
336 if (!bacmp(&sco_pi(sk)->src, src))
340 if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY))
344 read_unlock(&sco_sk_list.lock);
346 return sk ? sk : sk1;
349 static void sco_sock_destruct(struct sock *sk)
353 skb_queue_purge(&sk->sk_receive_queue);
354 skb_queue_purge(&sk->sk_write_queue);
357 static void sco_sock_cleanup_listen(struct sock *parent)
361 BT_DBG("parent %p", parent);
363 /* Close not yet accepted channels */
364 while ((sk = bt_accept_dequeue(parent, NULL))) {
369 parent->sk_state = BT_CLOSED;
370 sock_set_flag(parent, SOCK_ZAPPED);
373 /* Kill socket (only if zapped and orphan)
374 * Must be called on unlocked socket.
376 static void sco_sock_kill(struct sock *sk)
378 if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
381 BT_DBG("sk %p state %d", sk, sk->sk_state);
383 /* Kill poor orphan */
384 bt_sock_unlink(&sco_sk_list, sk);
385 sock_set_flag(sk, SOCK_DEAD);
389 static void __sco_sock_close(struct sock *sk)
391 BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
393 switch (sk->sk_state) {
395 sco_sock_cleanup_listen(sk);
400 if (sco_pi(sk)->conn->hcon) {
401 sk->sk_state = BT_DISCONN;
402 sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT);
403 sco_conn_lock(sco_pi(sk)->conn);
404 hci_conn_drop(sco_pi(sk)->conn->hcon);
405 sco_pi(sk)->conn->hcon = NULL;
406 sco_conn_unlock(sco_pi(sk)->conn);
408 sco_chan_del(sk, ECONNRESET);
414 sco_chan_del(sk, ECONNRESET);
418 sock_set_flag(sk, SOCK_ZAPPED);
423 /* Must be called on unlocked socket. */
424 static void sco_sock_close(struct sock *sk)
426 sco_sock_clear_timer(sk);
428 __sco_sock_close(sk);
432 static void sco_sock_init(struct sock *sk, struct sock *parent)
437 sk->sk_type = parent->sk_type;
438 bt_sk(sk)->flags = bt_sk(parent)->flags;
439 security_sk_clone(parent, sk);
443 static struct proto sco_proto = {
445 .owner = THIS_MODULE,
446 .obj_size = sizeof(struct sco_pinfo)
449 static struct sock *sco_sock_alloc(struct net *net, struct socket *sock,
450 int proto, gfp_t prio, int kern)
454 sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern);
458 sock_init_data(sock, sk);
459 INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
461 sk->sk_destruct = sco_sock_destruct;
462 sk->sk_sndtimeo = SCO_CONN_TIMEOUT;
464 sock_reset_flag(sk, SOCK_ZAPPED);
466 sk->sk_protocol = proto;
467 sk->sk_state = BT_OPEN;
469 sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT;
471 setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk);
473 bt_sock_link(&sco_sk_list, sk);
477 static int sco_sock_create(struct net *net, struct socket *sock, int protocol,
482 BT_DBG("sock %p", sock);
484 sock->state = SS_UNCONNECTED;
486 if (sock->type != SOCK_SEQPACKET)
487 return -ESOCKTNOSUPPORT;
489 sock->ops = &sco_sock_ops;
491 sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern);
495 sco_sock_init(sk, NULL);
499 static int sco_sock_bind(struct socket *sock, struct sockaddr *addr,
502 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
503 struct sock *sk = sock->sk;
506 BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr);
508 if (!addr || addr->sa_family != AF_BLUETOOTH)
511 if (addr_len < sizeof(struct sockaddr_sco))
516 if (sk->sk_state != BT_OPEN) {
521 if (sk->sk_type != SOCK_SEQPACKET) {
526 bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr);
528 sk->sk_state = BT_BOUND;
535 static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
537 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
538 struct sock *sk = sock->sk;
539 struct hci_dev *hdev;
544 if (alen < sizeof(struct sockaddr_sco) ||
545 addr->sa_family != AF_BLUETOOTH)
548 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND)
551 if (sk->sk_type != SOCK_SEQPACKET)
554 hdev = hci_get_route(&sa->sco_bdaddr, &sco_pi(sk)->src, BDADDR_BREDR);
556 return -EHOSTUNREACH;
561 /* Set destination address and psm */
562 bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr);
564 err = sco_connect(hdev, sk);
565 hci_dev_unlock(hdev);
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,
621 DEFINE_WAIT_FUNC(wait, woken_wake_function);
622 struct sock *sk = sock->sk, *ch;
628 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
630 BT_DBG("sk %p timeo %ld", sk, timeo);
632 /* Wait for an incoming connection. (wake-one). */
633 add_wait_queue_exclusive(sk_sleep(sk), &wait);
635 if (sk->sk_state != BT_LISTEN) {
640 ch = bt_accept_dequeue(sk, newsock);
649 if (signal_pending(current)) {
650 err = sock_intr_errno(timeo);
656 timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo);
659 remove_wait_queue(sk_sleep(sk), &wait);
664 newsock->state = SS_CONNECTED;
666 BT_DBG("new socket %p", ch);
673 static int sco_sock_getname(struct socket *sock, struct sockaddr *addr,
676 struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
677 struct sock *sk = sock->sk;
679 BT_DBG("sock %p, sk %p", sock, sk);
681 addr->sa_family = AF_BLUETOOTH;
682 *len = sizeof(struct sockaddr_sco);
685 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst);
687 bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src);
692 static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg,
695 struct sock *sk = sock->sk;
698 BT_DBG("sock %p, sk %p", sock, sk);
700 err = sock_error(sk);
704 if (msg->msg_flags & MSG_OOB)
709 if (sk->sk_state == BT_CONNECTED)
710 err = sco_send_frame(sk, msg, len);
718 static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting)
720 struct hci_dev *hdev = conn->hdev;
722 BT_DBG("conn %p", conn);
724 conn->state = BT_CONFIG;
726 if (!lmp_esco_capable(hdev)) {
727 struct hci_cp_accept_conn_req cp;
729 bacpy(&cp.bdaddr, &conn->dst);
730 cp.role = 0x00; /* Ignored */
732 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
734 struct hci_cp_accept_sync_conn_req cp;
736 bacpy(&cp.bdaddr, &conn->dst);
737 cp.pkt_type = cpu_to_le16(conn->pkt_type);
739 cp.tx_bandwidth = cpu_to_le32(0x00001f40);
740 cp.rx_bandwidth = cpu_to_le32(0x00001f40);
741 cp.content_format = cpu_to_le16(setting);
743 switch (setting & SCO_AIRMODE_MASK) {
744 case SCO_AIRMODE_TRANSP:
745 if (conn->pkt_type & ESCO_2EV3)
746 cp.max_latency = cpu_to_le16(0x0008);
748 cp.max_latency = cpu_to_le16(0x000D);
749 cp.retrans_effort = 0x02;
751 case SCO_AIRMODE_CVSD:
752 cp.max_latency = cpu_to_le16(0xffff);
753 cp.retrans_effort = 0xff;
756 /* use CVSD settings as fallback */
757 cp.max_latency = cpu_to_le16(0xffff);
758 cp.retrans_effort = 0xff;
762 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
767 static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg,
768 size_t len, int flags)
770 struct sock *sk = sock->sk;
771 struct sco_pinfo *pi = sco_pi(sk);
775 if (sk->sk_state == BT_CONNECT2 &&
776 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
777 sco_conn_defer_accept(pi->conn->hcon, pi->setting);
778 sk->sk_state = BT_CONFIG;
786 return bt_sock_recvmsg(sock, msg, len, flags);
789 static int sco_sock_setsockopt(struct socket *sock, int level, int optname,
790 char __user *optval, unsigned int optlen)
792 struct sock *sk = sock->sk;
794 struct bt_voice voice;
804 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
809 if (get_user(opt, (u32 __user *) optval)) {
815 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
817 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
821 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND &&
822 sk->sk_state != BT_CONNECT2) {
827 voice.setting = sco_pi(sk)->setting;
829 len = min_t(unsigned int, sizeof(voice), optlen);
830 if (copy_from_user((char *)&voice, optval, len)) {
835 /* Explicitly check for these values */
836 if (voice.setting != BT_VOICE_TRANSPARENT &&
837 voice.setting != BT_VOICE_CVSD_16BIT) {
842 sco_pi(sk)->setting = voice.setting;
854 static int sco_sock_getsockopt_old(struct socket *sock, int optname,
855 char __user *optval, int __user *optlen)
857 struct sock *sk = sock->sk;
858 struct sco_options opts;
859 struct sco_conninfo cinfo;
864 if (get_user(len, optlen))
871 if (sk->sk_state != BT_CONNECTED &&
872 !(sk->sk_state == BT_CONNECT2 &&
873 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
878 opts.mtu = sco_pi(sk)->conn->mtu;
880 BT_DBG("mtu %d", opts.mtu);
882 len = min_t(unsigned int, len, sizeof(opts));
883 if (copy_to_user(optval, (char *)&opts, len))
889 if (sk->sk_state != BT_CONNECTED &&
890 !(sk->sk_state == BT_CONNECT2 &&
891 test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) {
896 memset(&cinfo, 0, sizeof(cinfo));
897 cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle;
898 memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3);
900 len = min_t(unsigned int, len, sizeof(cinfo));
901 if (copy_to_user(optval, (char *)&cinfo, len))
915 static int sco_sock_getsockopt(struct socket *sock, int level, int optname,
916 char __user *optval, int __user *optlen)
918 struct sock *sk = sock->sk;
920 struct bt_voice voice;
924 if (level == SOL_SCO)
925 return sco_sock_getsockopt_old(sock, optname, optval, optlen);
927 if (get_user(len, optlen))
935 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
940 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
941 (u32 __user *)optval))
947 voice.setting = sco_pi(sk)->setting;
949 len = min_t(unsigned int, len, sizeof(voice));
950 if (copy_to_user(optval, (char *)&voice, len))
964 static int sco_sock_shutdown(struct socket *sock, int how)
966 struct sock *sk = sock->sk;
969 BT_DBG("sock %p, sk %p", sock, sk);
977 if (!sk->sk_shutdown) {
978 sk->sk_shutdown = SHUTDOWN_MASK;
979 sco_sock_clear_timer(sk);
980 __sco_sock_close(sk);
982 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
983 !(current->flags & PF_EXITING))
984 err = bt_sock_wait_state(sk, BT_CLOSED,
994 static int sco_sock_release(struct socket *sock)
996 struct sock *sk = sock->sk;
999 BT_DBG("sock %p, sk %p", sock, sk);
1006 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
1007 !(current->flags & PF_EXITING)) {
1009 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
1018 static void sco_conn_ready(struct sco_conn *conn)
1020 struct sock *parent;
1021 struct sock *sk = conn->sk;
1023 BT_DBG("conn %p", conn);
1026 sco_sock_clear_timer(sk);
1028 sk->sk_state = BT_CONNECTED;
1029 sk->sk_state_change(sk);
1032 sco_conn_lock(conn);
1035 sco_conn_unlock(conn);
1039 parent = sco_get_sock_listen(&conn->hcon->src);
1041 sco_conn_unlock(conn);
1045 bh_lock_sock(parent);
1047 sk = sco_sock_alloc(sock_net(parent), NULL,
1048 BTPROTO_SCO, GFP_ATOMIC, 0);
1050 bh_unlock_sock(parent);
1051 sco_conn_unlock(conn);
1055 sco_sock_init(sk, parent);
1057 bacpy(&sco_pi(sk)->src, &conn->hcon->src);
1058 bacpy(&sco_pi(sk)->dst, &conn->hcon->dst);
1060 hci_conn_hold(conn->hcon);
1061 __sco_chan_add(conn, sk, parent);
1063 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
1064 sk->sk_state = BT_CONNECT2;
1066 sk->sk_state = BT_CONNECTED;
1068 /* Wake up parent */
1069 parent->sk_data_ready(parent);
1071 bh_unlock_sock(parent);
1073 sco_conn_unlock(conn);
1077 /* ----- SCO interface with lower layer (HCI) ----- */
1078 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags)
1083 BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr);
1085 /* Find listening sockets */
1086 read_lock(&sco_sk_list.lock);
1087 sk_for_each(sk, &sco_sk_list.head) {
1088 if (sk->sk_state != BT_LISTEN)
1091 if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) ||
1092 !bacmp(&sco_pi(sk)->src, BDADDR_ANY)) {
1093 lm |= HCI_LM_ACCEPT;
1095 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))
1096 *flags |= HCI_PROTO_DEFER;
1100 read_unlock(&sco_sk_list.lock);
1105 static void sco_connect_cfm(struct hci_conn *hcon, __u8 status)
1107 if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
1110 BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status);
1113 struct sco_conn *conn;
1115 conn = sco_conn_add(hcon);
1117 sco_conn_ready(conn);
1119 sco_conn_del(hcon, bt_to_errno(status));
1122 static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason)
1124 if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK)
1127 BT_DBG("hcon %p reason %d", hcon, reason);
1129 sco_conn_del(hcon, bt_to_errno(reason));
1132 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
1134 struct sco_conn *conn = hcon->sco_data;
1139 BT_DBG("conn %p len %d", conn, skb->len);
1142 sco_recv_frame(conn, skb);
1150 static struct hci_cb sco_cb = {
1152 .connect_cfm = sco_connect_cfm,
1153 .disconn_cfm = sco_disconn_cfm,
1156 static int sco_debugfs_show(struct seq_file *f, void *p)
1160 read_lock(&sco_sk_list.lock);
1162 sk_for_each(sk, &sco_sk_list.head) {
1163 seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src,
1164 &sco_pi(sk)->dst, sk->sk_state);
1167 read_unlock(&sco_sk_list.lock);
1172 static int sco_debugfs_open(struct inode *inode, struct file *file)
1174 return single_open(file, sco_debugfs_show, inode->i_private);
1177 static const struct file_operations sco_debugfs_fops = {
1178 .open = sco_debugfs_open,
1180 .llseek = seq_lseek,
1181 .release = single_release,
1184 static struct dentry *sco_debugfs;
1186 static const struct proto_ops sco_sock_ops = {
1187 .family = PF_BLUETOOTH,
1188 .owner = THIS_MODULE,
1189 .release = sco_sock_release,
1190 .bind = sco_sock_bind,
1191 .connect = sco_sock_connect,
1192 .listen = sco_sock_listen,
1193 .accept = sco_sock_accept,
1194 .getname = sco_sock_getname,
1195 .sendmsg = sco_sock_sendmsg,
1196 .recvmsg = sco_sock_recvmsg,
1197 .poll = bt_sock_poll,
1198 .ioctl = bt_sock_ioctl,
1199 .mmap = sock_no_mmap,
1200 .socketpair = sock_no_socketpair,
1201 .shutdown = sco_sock_shutdown,
1202 .setsockopt = sco_sock_setsockopt,
1203 .getsockopt = sco_sock_getsockopt
1206 static const struct net_proto_family sco_sock_family_ops = {
1207 .family = PF_BLUETOOTH,
1208 .owner = THIS_MODULE,
1209 .create = sco_sock_create,
1212 int __init sco_init(void)
1216 BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr));
1218 err = proto_register(&sco_proto, 0);
1222 err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops);
1224 BT_ERR("SCO socket registration failed");
1228 err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL);
1230 BT_ERR("Failed to create SCO proc file");
1231 bt_sock_unregister(BTPROTO_SCO);
1235 BT_INFO("SCO socket layer initialized");
1237 hci_register_cb(&sco_cb);
1239 if (IS_ERR_OR_NULL(bt_debugfs))
1242 sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs,
1243 NULL, &sco_debugfs_fops);
1248 proto_unregister(&sco_proto);
1254 bt_procfs_cleanup(&init_net, "sco");
1256 debugfs_remove(sco_debugfs);
1258 hci_unregister_cb(&sco_cb);
1260 bt_sock_unregister(BTPROTO_SCO);
1262 proto_unregister(&sco_proto);
1265 module_param(disable_esco, bool, 0644);
1266 MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation");