[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/net/bluetooth/sco.c b/ap/os/linux/linux-3.4.x/net/bluetooth/sco.c
new file mode 100644
index 0000000..4f4eb6c
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/bluetooth/sco.c
@@ -0,0 +1,1077 @@
+/*
+ BlueZ - Bluetooth protocol stack for Linux
+ Copyright (C) 2000-2001 Qualcomm Incorporated
+
+ Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License version 2 as
+ published by the Free Software Foundation;
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+ IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
+ CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+ ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
+ COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
+ SOFTWARE IS DISCLAIMED.
+*/
+
+/* Bluetooth SCO sockets. */
+
+#include <linux/module.h>
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/poll.h>
+#include <linux/fcntl.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/socket.h>
+#include <linux/skbuff.h>
+#include <linux/device.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/list.h>
+#include <linux/security.h>
+#include <net/sock.h>
+
+#include <linux/uaccess.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <net/bluetooth/sco.h>
+
+static bool disable_esco;
+
+static const struct proto_ops sco_sock_ops;
+
+static struct bt_sock_list sco_sk_list = {
+ .lock = __RW_LOCK_UNLOCKED(sco_sk_list.lock)
+};
+
+static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent);
+static void sco_chan_del(struct sock *sk, int err);
+
+static int sco_conn_del(struct hci_conn *conn, int err);
+
+static void sco_sock_close(struct sock *sk);
+static void sco_sock_kill(struct sock *sk);
+
+/* ---- SCO timers ---- */
+static void sco_sock_timeout(unsigned long arg)
+{
+ struct sock *sk = (struct sock *) arg;
+
+ BT_DBG("sock %p state %d", sk, sk->sk_state);
+
+ bh_lock_sock(sk);
+ sk->sk_err = ETIMEDOUT;
+ sk->sk_state_change(sk);
+ bh_unlock_sock(sk);
+
+ sco_sock_kill(sk);
+ sock_put(sk);
+}
+
+static void sco_sock_set_timer(struct sock *sk, long timeout)
+{
+ BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout);
+ sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout);
+}
+
+static void sco_sock_clear_timer(struct sock *sk)
+{
+ BT_DBG("sock %p state %d", sk, sk->sk_state);
+ sk_stop_timer(sk, &sk->sk_timer);
+}
+
+/* ---- SCO connections ---- */
+static struct sco_conn *sco_conn_add(struct hci_conn *hcon, __u8 status)
+{
+ struct hci_dev *hdev = hcon->hdev;
+ struct sco_conn *conn = hcon->sco_data;
+
+ if (conn || status)
+ return conn;
+
+ conn = kzalloc(sizeof(struct sco_conn), GFP_ATOMIC);
+ if (!conn)
+ return NULL;
+
+ spin_lock_init(&conn->lock);
+
+ hcon->sco_data = conn;
+ conn->hcon = hcon;
+
+ conn->src = &hdev->bdaddr;
+ conn->dst = &hcon->dst;
+
+ if (hdev->sco_mtu > 0)
+ conn->mtu = hdev->sco_mtu;
+ else
+ conn->mtu = 60;
+
+ BT_DBG("hcon %p conn %p", hcon, conn);
+
+ return conn;
+}
+
+static inline struct sock *sco_chan_get(struct sco_conn *conn)
+{
+ struct sock *sk = NULL;
+ sco_conn_lock(conn);
+ sk = conn->sk;
+ sco_conn_unlock(conn);
+ return sk;
+}
+
+static int sco_conn_del(struct hci_conn *hcon, int err)
+{
+ struct sco_conn *conn = hcon->sco_data;
+ struct sock *sk;
+
+ if (!conn)
+ return 0;
+
+ BT_DBG("hcon %p conn %p, err %d", hcon, conn, err);
+
+ /* Kill socket */
+ sk = sco_chan_get(conn);
+ if (sk) {
+ bh_lock_sock(sk);
+ sco_sock_clear_timer(sk);
+ sco_chan_del(sk, err);
+ bh_unlock_sock(sk);
+ sco_sock_kill(sk);
+ }
+
+ hcon->sco_data = NULL;
+ kfree(conn);
+ return 0;
+}
+
+static inline int sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent)
+{
+ int err = 0;
+
+ sco_conn_lock(conn);
+ if (conn->sk)
+ err = -EBUSY;
+ else
+ __sco_chan_add(conn, sk, parent);
+
+ sco_conn_unlock(conn);
+ return err;
+}
+
+static int sco_connect(struct sock *sk)
+{
+ bdaddr_t *src = &bt_sk(sk)->src;
+ bdaddr_t *dst = &bt_sk(sk)->dst;
+ __u16 pkt_type = sco_pi(sk)->pkt_type;
+ struct sco_conn *conn;
+ struct hci_conn *hcon;
+ struct hci_dev *hdev;
+ int err, type;
+
+ BT_DBG("%s -> %s", batostr(src), batostr(dst));
+
+ hdev = hci_get_route(dst, src);
+ if (!hdev)
+ return -EHOSTUNREACH;
+
+ hci_dev_lock(hdev);
+
+ if (lmp_esco_capable(hdev) && !disable_esco)
+ type = ESCO_LINK;
+ else {
+ type = SCO_LINK;
+ pkt_type &= SCO_ESCO_MASK;
+ }
+
+ hcon = hci_connect(hdev, type, pkt_type, dst, BT_SECURITY_LOW, HCI_AT_NO_BONDING);
+ if (IS_ERR(hcon)) {
+ err = PTR_ERR(hcon);
+ goto done;
+ }
+
+ conn = sco_conn_add(hcon, 0);
+ if (!conn) {
+ hci_conn_put(hcon);
+ err = -ENOMEM;
+ goto done;
+ }
+
+ /* Update source addr of the socket */
+ bacpy(src, conn->src);
+
+ err = sco_chan_add(conn, sk, NULL);
+ if (err)
+ goto done;
+
+ if (hcon->state == BT_CONNECTED) {
+ sco_sock_clear_timer(sk);
+ sk->sk_state = BT_CONNECTED;
+ } else {
+ sk->sk_state = BT_CONNECT;
+ sco_sock_set_timer(sk, sk->sk_sndtimeo);
+ }
+
+done:
+ hci_dev_unlock(hdev);
+ hci_dev_put(hdev);
+ return err;
+}
+
+static inline int sco_send_frame(struct sock *sk, struct msghdr *msg, int len)
+{
+ struct sco_conn *conn = sco_pi(sk)->conn;
+ struct sk_buff *skb;
+ int err, count;
+
+ /* Check outgoing MTU */
+ if (len > conn->mtu)
+ return -EINVAL;
+
+ BT_DBG("sk %p len %d", sk, len);
+
+ count = min_t(unsigned int, conn->mtu, len);
+ skb = bt_skb_send_alloc(sk, count,
+ msg->msg_flags & MSG_DONTWAIT, &err);
+ if (!skb)
+ return err;
+
+ if (memcpy_fromiovec(skb_put(skb, count), msg->msg_iov, count)) {
+ kfree_skb(skb);
+ return -EFAULT;
+ }
+
+ hci_send_sco(conn->hcon, skb);
+
+ return count;
+}
+
+static inline void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb)
+{
+ struct sock *sk = sco_chan_get(conn);
+
+ if (!sk)
+ goto drop;
+
+ BT_DBG("sk %p len %d", sk, skb->len);
+
+ if (sk->sk_state != BT_CONNECTED)
+ goto drop;
+
+ if (!sock_queue_rcv_skb(sk, skb))
+ return;
+
+drop:
+ kfree_skb(skb);
+}
+
+/* -------- Socket interface ---------- */
+static struct sock *__sco_get_sock_by_addr(bdaddr_t *ba)
+{
+ struct sock *sk;
+ struct hlist_node *node;
+
+ sk_for_each(sk, node, &sco_sk_list.head)
+ if (!bacmp(&bt_sk(sk)->src, ba))
+ goto found;
+ sk = NULL;
+found:
+ return sk;
+}
+
+/* Find socket listening on source bdaddr.
+ * Returns closest match.
+ */
+static struct sock *sco_get_sock_listen(bdaddr_t *src)
+{
+ struct sock *sk = NULL, *sk1 = NULL;
+ struct hlist_node *node;
+
+ read_lock(&sco_sk_list.lock);
+
+ sk_for_each(sk, node, &sco_sk_list.head) {
+ if (sk->sk_state != BT_LISTEN)
+ continue;
+
+ /* Exact match. */
+ if (!bacmp(&bt_sk(sk)->src, src))
+ break;
+
+ /* Closest match */
+ if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY))
+ sk1 = sk;
+ }
+
+ read_unlock(&sco_sk_list.lock);
+
+ return node ? sk : sk1;
+}
+
+static void sco_sock_destruct(struct sock *sk)
+{
+ BT_DBG("sk %p", sk);
+
+ skb_queue_purge(&sk->sk_receive_queue);
+ skb_queue_purge(&sk->sk_write_queue);
+}
+
+static void sco_sock_cleanup_listen(struct sock *parent)
+{
+ struct sock *sk;
+
+ BT_DBG("parent %p", parent);
+
+ /* Close not yet accepted channels */
+ while ((sk = bt_accept_dequeue(parent, NULL))) {
+ sco_sock_close(sk);
+ sco_sock_kill(sk);
+ }
+
+ parent->sk_state = BT_CLOSED;
+ sock_set_flag(parent, SOCK_ZAPPED);
+}
+
+/* Kill socket (only if zapped and orphan)
+ * Must be called on unlocked socket.
+ */
+static void sco_sock_kill(struct sock *sk)
+{
+ if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
+ return;
+
+ BT_DBG("sk %p state %d", sk, sk->sk_state);
+
+ /* Kill poor orphan */
+ bt_sock_unlink(&sco_sk_list, sk);
+ sock_set_flag(sk, SOCK_DEAD);
+ sock_put(sk);
+}
+
+static void __sco_sock_close(struct sock *sk)
+{
+ BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
+
+ switch (sk->sk_state) {
+ case BT_LISTEN:
+ sco_sock_cleanup_listen(sk);
+ break;
+
+ case BT_CONNECTED:
+ case BT_CONFIG:
+ if (sco_pi(sk)->conn) {
+ sk->sk_state = BT_DISCONN;
+ sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT);
+ hci_conn_put(sco_pi(sk)->conn->hcon);
+ sco_pi(sk)->conn->hcon = NULL;
+ } else
+ sco_chan_del(sk, ECONNRESET);
+ break;
+
+ case BT_CONNECT2:
+ case BT_CONNECT:
+ case BT_DISCONN:
+ sco_chan_del(sk, ECONNRESET);
+ break;
+
+ default:
+ sock_set_flag(sk, SOCK_ZAPPED);
+ break;
+ }
+}
+
+/* Must be called on unlocked socket. */
+static void sco_sock_close(struct sock *sk)
+{
+ sco_sock_clear_timer(sk);
+ lock_sock(sk);
+ __sco_sock_close(sk);
+ release_sock(sk);
+ sco_sock_kill(sk);
+}
+
+static void sco_sock_init(struct sock *sk, struct sock *parent)
+{
+ BT_DBG("sk %p", sk);
+
+ if (parent) {
+ sk->sk_type = parent->sk_type;
+ security_sk_clone(parent, sk);
+ }
+}
+
+static struct proto sco_proto = {
+ .name = "SCO",
+ .owner = THIS_MODULE,
+ .obj_size = sizeof(struct sco_pinfo)
+};
+
+static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio)
+{
+ struct sock *sk;
+
+ sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto);
+ if (!sk)
+ return NULL;
+
+ sock_init_data(sock, sk);
+ INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
+
+ sk->sk_destruct = sco_sock_destruct;
+ sk->sk_sndtimeo = SCO_CONN_TIMEOUT;
+
+ sock_reset_flag(sk, SOCK_ZAPPED);
+
+ sk->sk_protocol = proto;
+ sk->sk_state = BT_OPEN;
+
+ setup_timer(&sk->sk_timer, sco_sock_timeout, (unsigned long)sk);
+
+ bt_sock_link(&sco_sk_list, sk);
+ return sk;
+}
+
+static int sco_sock_create(struct net *net, struct socket *sock, int protocol,
+ int kern)
+{
+ struct sock *sk;
+
+ BT_DBG("sock %p", sock);
+
+ sock->state = SS_UNCONNECTED;
+
+ if (sock->type != SOCK_SEQPACKET)
+ return -ESOCKTNOSUPPORT;
+
+ sock->ops = &sco_sock_ops;
+
+ sk = sco_sock_alloc(net, sock, protocol, GFP_ATOMIC);
+ if (!sk)
+ return -ENOMEM;
+
+ sco_sock_init(sk, NULL);
+ return 0;
+}
+
+static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
+{
+ struct sockaddr_sco sa;
+ struct sock *sk = sock->sk;
+ bdaddr_t *src = &sa.sco_bdaddr;
+ int len, err = 0;
+
+ BT_DBG("sk %p %s", sk, batostr(&sa.sco_bdaddr));
+
+ if (!addr || addr->sa_family != AF_BLUETOOTH)
+ return -EINVAL;
+
+ memset(&sa, 0, sizeof(sa));
+ len = min_t(unsigned int, sizeof(sa), alen);
+ memcpy(&sa, addr, len);
+
+ lock_sock(sk);
+
+ if (sk->sk_state != BT_OPEN) {
+ err = -EBADFD;
+ goto done;
+ }
+
+ write_lock(&sco_sk_list.lock);
+
+ if (bacmp(src, BDADDR_ANY) && __sco_get_sock_by_addr(src)) {
+ err = -EADDRINUSE;
+ } else {
+ /* Save source address */
+ bacpy(&bt_sk(sk)->src, &sa.sco_bdaddr);
+ sco_pi(sk)->pkt_type = sa.sco_pkt_type;
+ sk->sk_state = BT_BOUND;
+ }
+
+ write_unlock(&sco_sk_list.lock);
+
+done:
+ release_sock(sk);
+ return err;
+}
+
+static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
+{
+ struct sock *sk = sock->sk;
+ struct sockaddr_sco sa;
+ int len, err = 0;
+
+ BT_DBG("sk %p", sk);
+
+ if (!addr || addr->sa_family != AF_BLUETOOTH)
+ return -EINVAL;
+
+ memset(&sa, 0, sizeof(sa));
+ len = min_t(unsigned int, sizeof(sa), alen);
+ memcpy(&sa, addr, len);
+
+ lock_sock(sk);
+
+ if (sk->sk_type != SOCK_SEQPACKET) {
+ err = -EINVAL;
+ goto done;
+ }
+
+ if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) {
+ err = -EBADFD;
+ goto done;
+ }
+
+ /* Set destination address and psm */
+ bacpy(&bt_sk(sk)->dst, &sa.sco_bdaddr);
+ sco_pi(sk)->pkt_type = sa.sco_pkt_type;
+
+ err = sco_connect(sk);
+ if (err)
+ goto done;
+
+ err = bt_sock_wait_state(sk, BT_CONNECTED,
+ sock_sndtimeo(sk, flags & O_NONBLOCK));
+
+done:
+ release_sock(sk);
+ return err;
+}
+
+static int sco_sock_listen(struct socket *sock, int backlog)
+{
+ struct sock *sk = sock->sk;
+ int err = 0;
+
+ BT_DBG("sk %p backlog %d", sk, backlog);
+
+ lock_sock(sk);
+
+ if (sk->sk_state != BT_BOUND || sock->type != SOCK_SEQPACKET) {
+ err = -EBADFD;
+ goto done;
+ }
+
+ sk->sk_max_ack_backlog = backlog;
+ sk->sk_ack_backlog = 0;
+ sk->sk_state = BT_LISTEN;
+
+done:
+ release_sock(sk);
+ return err;
+}
+
+static int sco_sock_accept(struct socket *sock, struct socket *newsock, int flags)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ struct sock *sk = sock->sk, *ch;
+ long timeo;
+ int err = 0;
+
+ lock_sock(sk);
+
+ timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
+
+ BT_DBG("sk %p timeo %ld", sk, timeo);
+
+ /* Wait for an incoming connection. (wake-one). */
+ add_wait_queue_exclusive(sk_sleep(sk), &wait);
+ while (1) {
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ if (sk->sk_state != BT_LISTEN) {
+ err = -EBADFD;
+ break;
+ }
+
+ ch = bt_accept_dequeue(sk, newsock);
+ if (ch)
+ break;
+
+ if (!timeo) {
+ err = -EAGAIN;
+ break;
+ }
+
+ if (signal_pending(current)) {
+ err = sock_intr_errno(timeo);
+ break;
+ }
+
+ release_sock(sk);
+ timeo = schedule_timeout(timeo);
+ lock_sock(sk);
+ }
+ __set_current_state(TASK_RUNNING);
+ remove_wait_queue(sk_sleep(sk), &wait);
+
+ if (err)
+ goto done;
+
+ newsock->state = SS_CONNECTED;
+
+ BT_DBG("new socket %p", ch);
+
+done:
+ release_sock(sk);
+ return err;
+}
+
+static int sco_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
+{
+ struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
+ struct sock *sk = sock->sk;
+
+ BT_DBG("sock %p, sk %p", sock, sk);
+
+ addr->sa_family = AF_BLUETOOTH;
+ *len = sizeof(struct sockaddr_sco);
+
+ if (peer)
+ bacpy(&sa->sco_bdaddr, &bt_sk(sk)->dst);
+ else
+ bacpy(&sa->sco_bdaddr, &bt_sk(sk)->src);
+ sa->sco_pkt_type = sco_pi(sk)->pkt_type;
+
+ return 0;
+}
+
+static int sco_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
+ struct msghdr *msg, size_t len)
+{
+ struct sock *sk = sock->sk;
+ int err;
+
+ BT_DBG("sock %p, sk %p", sock, sk);
+
+ err = sock_error(sk);
+ if (err)
+ return err;
+
+ if (msg->msg_flags & MSG_OOB)
+ return -EOPNOTSUPP;
+
+ lock_sock(sk);
+
+ if (sk->sk_state == BT_CONNECTED)
+ err = sco_send_frame(sk, msg, len);
+ else
+ err = -ENOTCONN;
+
+ release_sock(sk);
+ return err;
+}
+
+static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen)
+{
+ struct sock *sk = sock->sk;
+ int err = 0;
+
+ BT_DBG("sk %p", sk);
+
+ lock_sock(sk);
+
+ switch (optname) {
+ default:
+ err = -ENOPROTOOPT;
+ break;
+ }
+
+ release_sock(sk);
+ return err;
+}
+
+static int sco_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
+{
+ struct sock *sk = sock->sk;
+ struct sco_options opts;
+ struct sco_conninfo cinfo;
+ int len, err = 0;
+
+ BT_DBG("sk %p", sk);
+
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+ lock_sock(sk);
+
+ switch (optname) {
+ case SCO_OPTIONS:
+ if (sk->sk_state != BT_CONNECTED) {
+ err = -ENOTCONN;
+ break;
+ }
+
+ opts.mtu = sco_pi(sk)->conn->mtu;
+
+ BT_DBG("mtu %d", opts.mtu);
+
+ len = min_t(unsigned int, len, sizeof(opts));
+ if (copy_to_user(optval, (char *)&opts, len))
+ err = -EFAULT;
+
+ break;
+
+ case SCO_CONNINFO:
+ if (sk->sk_state != BT_CONNECTED) {
+ err = -ENOTCONN;
+ break;
+ }
+
+ memset(&cinfo, 0, sizeof(cinfo));
+ cinfo.hci_handle = sco_pi(sk)->conn->hcon->handle;
+ memcpy(cinfo.dev_class, sco_pi(sk)->conn->hcon->dev_class, 3);
+
+ len = min_t(unsigned int, len, sizeof(cinfo));
+ if (copy_to_user(optval, (char *)&cinfo, len))
+ err = -EFAULT;
+
+ break;
+
+ default:
+ err = -ENOPROTOOPT;
+ break;
+ }
+
+ release_sock(sk);
+ return err;
+}
+
+static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
+{
+ struct sock *sk = sock->sk;
+ int len, err = 0;
+
+ BT_DBG("sk %p", sk);
+
+ if (level == SOL_SCO)
+ return sco_sock_getsockopt_old(sock, optname, optval, optlen);
+
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+ lock_sock(sk);
+
+ switch (optname) {
+ default:
+ err = -ENOPROTOOPT;
+ break;
+ }
+
+ release_sock(sk);
+ return err;
+}
+
+static int sco_sock_shutdown(struct socket *sock, int how)
+{
+ struct sock *sk = sock->sk;
+ int err = 0;
+
+ BT_DBG("sock %p, sk %p", sock, sk);
+
+ if (!sk)
+ return 0;
+
+ lock_sock(sk);
+ if (!sk->sk_shutdown) {
+ sk->sk_shutdown = SHUTDOWN_MASK;
+ sco_sock_clear_timer(sk);
+ __sco_sock_close(sk);
+
+ if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
+ err = bt_sock_wait_state(sk, BT_CLOSED,
+ sk->sk_lingertime);
+ }
+ release_sock(sk);
+ return err;
+}
+
+static int sco_sock_release(struct socket *sock)
+{
+ struct sock *sk = sock->sk;
+ int err = 0;
+
+ BT_DBG("sock %p, sk %p", sock, sk);
+
+ if (!sk)
+ return 0;
+
+ sco_sock_close(sk);
+
+ if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) {
+ lock_sock(sk);
+ err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
+ release_sock(sk);
+ }
+
+ sock_orphan(sk);
+ sco_sock_kill(sk);
+ return err;
+}
+
+static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, struct sock *parent)
+{
+ BT_DBG("conn %p", conn);
+
+ sco_pi(sk)->conn = conn;
+ conn->sk = sk;
+
+ if (parent)
+ bt_accept_enqueue(parent, sk);
+}
+
+/* Delete channel.
+ * Must be called on the locked socket. */
+static void sco_chan_del(struct sock *sk, int err)
+{
+ struct sco_conn *conn;
+
+ conn = sco_pi(sk)->conn;
+
+ BT_DBG("sk %p, conn %p, err %d", sk, conn, err);
+
+ if (conn) {
+ sco_conn_lock(conn);
+ conn->sk = NULL;
+ sco_pi(sk)->conn = NULL;
+ sco_conn_unlock(conn);
+
+ if (conn->hcon)
+ hci_conn_put(conn->hcon);
+ }
+
+ sk->sk_state = BT_CLOSED;
+ sk->sk_err = err;
+ sk->sk_state_change(sk);
+
+ sock_set_flag(sk, SOCK_ZAPPED);
+}
+
+static void sco_conn_ready(struct sco_conn *conn)
+{
+ struct sock *parent;
+ struct sock *sk = conn->sk;
+
+ BT_DBG("conn %p", conn);
+
+ sco_conn_lock(conn);
+
+ if (sk) {
+ sco_sock_clear_timer(sk);
+ bh_lock_sock(sk);
+ sk->sk_state = BT_CONNECTED;
+ sk->sk_state_change(sk);
+ bh_unlock_sock(sk);
+ } else {
+ parent = sco_get_sock_listen(conn->src);
+ if (!parent)
+ goto done;
+
+ bh_lock_sock(parent);
+
+ sk = sco_sock_alloc(sock_net(parent), NULL,
+ BTPROTO_SCO, GFP_ATOMIC);
+ if (!sk) {
+ bh_unlock_sock(parent);
+ goto done;
+ }
+
+ sco_sock_init(sk, parent);
+
+ bacpy(&bt_sk(sk)->src, conn->src);
+ bacpy(&bt_sk(sk)->dst, conn->dst);
+
+ hci_conn_hold(conn->hcon);
+ __sco_chan_add(conn, sk, parent);
+
+ sk->sk_state = BT_CONNECTED;
+
+ /* Wake up parent */
+ parent->sk_data_ready(parent, 1);
+
+ bh_unlock_sock(parent);
+ }
+
+done:
+ sco_conn_unlock(conn);
+}
+
+/* ----- SCO interface with lower layer (HCI) ----- */
+int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr)
+{
+ register struct sock *sk;
+ struct hlist_node *node;
+ int lm = 0;
+
+ BT_DBG("hdev %s, bdaddr %s", hdev->name, batostr(bdaddr));
+
+ /* Find listening sockets */
+ read_lock(&sco_sk_list.lock);
+ sk_for_each(sk, node, &sco_sk_list.head) {
+ if (sk->sk_state != BT_LISTEN)
+ continue;
+
+ if (!bacmp(&bt_sk(sk)->src, &hdev->bdaddr) ||
+ !bacmp(&bt_sk(sk)->src, BDADDR_ANY)) {
+ lm |= HCI_LM_ACCEPT;
+ break;
+ }
+ }
+ read_unlock(&sco_sk_list.lock);
+
+ return lm;
+}
+
+int sco_connect_cfm(struct hci_conn *hcon, __u8 status)
+{
+ BT_DBG("hcon %p bdaddr %s status %d", hcon, batostr(&hcon->dst), status);
+ if (!status) {
+ struct sco_conn *conn;
+
+ conn = sco_conn_add(hcon, status);
+ if (conn)
+ sco_conn_ready(conn);
+ } else
+ sco_conn_del(hcon, bt_to_errno(status));
+
+ return 0;
+}
+
+int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason)
+{
+ BT_DBG("hcon %p reason %d", hcon, reason);
+
+ sco_conn_del(hcon, bt_to_errno(reason));
+ return 0;
+}
+
+int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
+{
+ struct sco_conn *conn = hcon->sco_data;
+
+ if (!conn)
+ goto drop;
+
+ BT_DBG("conn %p len %d", conn, skb->len);
+
+ if (skb->len) {
+ sco_recv_frame(conn, skb);
+ return 0;
+ }
+
+drop:
+ kfree_skb(skb);
+ return 0;
+}
+
+static int sco_debugfs_show(struct seq_file *f, void *p)
+{
+ struct sock *sk;
+ struct hlist_node *node;
+
+ read_lock(&sco_sk_list.lock);
+
+ sk_for_each(sk, node, &sco_sk_list.head) {
+ seq_printf(f, "%s %s %d\n", batostr(&bt_sk(sk)->src),
+ batostr(&bt_sk(sk)->dst), sk->sk_state);
+ }
+
+ read_unlock(&sco_sk_list.lock);
+
+ return 0;
+}
+
+static int sco_debugfs_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, sco_debugfs_show, inode->i_private);
+}
+
+static const struct file_operations sco_debugfs_fops = {
+ .open = sco_debugfs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static struct dentry *sco_debugfs;
+
+static const struct proto_ops sco_sock_ops = {
+ .family = PF_BLUETOOTH,
+ .owner = THIS_MODULE,
+ .release = sco_sock_release,
+ .bind = sco_sock_bind,
+ .connect = sco_sock_connect,
+ .listen = sco_sock_listen,
+ .accept = sco_sock_accept,
+ .getname = sco_sock_getname,
+ .sendmsg = sco_sock_sendmsg,
+ .recvmsg = bt_sock_recvmsg,
+ .poll = bt_sock_poll,
+ .ioctl = bt_sock_ioctl,
+ .mmap = sock_no_mmap,
+ .socketpair = sock_no_socketpair,
+ .shutdown = sco_sock_shutdown,
+ .setsockopt = sco_sock_setsockopt,
+ .getsockopt = sco_sock_getsockopt
+};
+
+static const struct net_proto_family sco_sock_family_ops = {
+ .family = PF_BLUETOOTH,
+ .owner = THIS_MODULE,
+ .create = sco_sock_create,
+};
+
+int __init sco_init(void)
+{
+ int err;
+
+ err = proto_register(&sco_proto, 0);
+ if (err < 0)
+ return err;
+
+ err = bt_sock_register(BTPROTO_SCO, &sco_sock_family_ops);
+ if (err < 0) {
+ BT_ERR("SCO socket registration failed");
+ goto error;
+ }
+
+ if (bt_debugfs) {
+ sco_debugfs = debugfs_create_file("sco", 0444,
+ bt_debugfs, NULL, &sco_debugfs_fops);
+ if (!sco_debugfs)
+ BT_ERR("Failed to create SCO debug file");
+ }
+
+ BT_INFO("SCO socket layer initialized");
+
+ return 0;
+
+error:
+ proto_unregister(&sco_proto);
+ return err;
+}
+
+void __exit sco_exit(void)
+{
+ debugfs_remove(sco_debugfs);
+
+ if (bt_sock_unregister(BTPROTO_SCO) < 0)
+ BT_ERR("SCO socket unregistration failed");
+
+ proto_unregister(&sco_proto);
+}
+
+module_param(disable_esco, bool, 0644);
+MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation");