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1502 lines
30 KiB
1502 lines
30 KiB
/* |
|
BlueZ - Bluetooth protocol stack for Linux |
|
Copyright (C) 2000-2001 Qualcomm Incorporated |
|
|
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Written 2000,2001 by Maxim Krasnyansky <[email protected]> |
|
|
|
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 |
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published by the Free Software Foundation; |
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. |
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IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY |
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CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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|
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ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
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COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS |
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SOFTWARE IS DISCLAIMED. |
|
*/ |
|
|
|
/* Bluetooth SCO sockets. */ |
|
|
|
#include <linux/module.h> |
|
#include <linux/debugfs.h> |
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#include <linux/seq_file.h> |
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#include <linux/sched/signal.h> |
|
|
|
#include <net/bluetooth/bluetooth.h> |
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#include <net/bluetooth/hci_core.h> |
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#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 = { |
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.lock = __RW_LOCK_UNLOCKED(sco_sk_list.lock) |
|
}; |
|
|
|
/* ---- SCO connections ---- */ |
|
struct sco_conn { |
|
struct hci_conn *hcon; |
|
|
|
spinlock_t lock; |
|
struct sock *sk; |
|
|
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struct delayed_work timeout_work; |
|
|
|
unsigned int mtu; |
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}; |
|
|
|
#define sco_conn_lock(c) spin_lock(&c->lock) |
|
#define sco_conn_unlock(c) spin_unlock(&c->lock) |
|
|
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static void sco_sock_close(struct sock *sk); |
|
static void sco_sock_kill(struct sock *sk); |
|
|
|
/* ----- SCO socket info ----- */ |
|
#define sco_pi(sk) ((struct sco_pinfo *) sk) |
|
|
|
struct sco_pinfo { |
|
struct bt_sock bt; |
|
bdaddr_t src; |
|
bdaddr_t dst; |
|
__u32 flags; |
|
__u16 setting; |
|
__u8 cmsg_mask; |
|
struct bt_codec codec; |
|
struct sco_conn *conn; |
|
}; |
|
|
|
/* ---- SCO timers ---- */ |
|
#define SCO_CONN_TIMEOUT (HZ * 40) |
|
#define SCO_DISCONN_TIMEOUT (HZ * 2) |
|
|
|
static void sco_sock_timeout(struct work_struct *work) |
|
{ |
|
struct sco_conn *conn = container_of(work, struct sco_conn, |
|
timeout_work.work); |
|
struct sock *sk; |
|
|
|
sco_conn_lock(conn); |
|
sk = conn->sk; |
|
if (sk) |
|
sock_hold(sk); |
|
sco_conn_unlock(conn); |
|
|
|
if (!sk) |
|
return; |
|
|
|
BT_DBG("sock %p state %d", sk, sk->sk_state); |
|
|
|
lock_sock(sk); |
|
sk->sk_err = ETIMEDOUT; |
|
sk->sk_state_change(sk); |
|
release_sock(sk); |
|
sock_put(sk); |
|
} |
|
|
|
static void sco_sock_set_timer(struct sock *sk, long timeout) |
|
{ |
|
if (!sco_pi(sk)->conn) |
|
return; |
|
|
|
BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout); |
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cancel_delayed_work(&sco_pi(sk)->conn->timeout_work); |
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schedule_delayed_work(&sco_pi(sk)->conn->timeout_work, timeout); |
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} |
|
|
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static void sco_sock_clear_timer(struct sock *sk) |
|
{ |
|
if (!sco_pi(sk)->conn) |
|
return; |
|
|
|
BT_DBG("sock %p state %d", sk, sk->sk_state); |
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cancel_delayed_work(&sco_pi(sk)->conn->timeout_work); |
|
} |
|
|
|
/* ---- SCO connections ---- */ |
|
static struct sco_conn *sco_conn_add(struct hci_conn *hcon) |
|
{ |
|
struct hci_dev *hdev = hcon->hdev; |
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struct sco_conn *conn = hcon->sco_data; |
|
|
|
if (conn) |
|
return conn; |
|
|
|
conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL); |
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if (!conn) |
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return NULL; |
|
|
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spin_lock_init(&conn->lock); |
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INIT_DELAYED_WORK(&conn->timeout_work, sco_sock_timeout); |
|
|
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hcon->sco_data = conn; |
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conn->hcon = hcon; |
|
|
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if (hdev->sco_mtu > 0) |
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conn->mtu = hdev->sco_mtu; |
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else |
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conn->mtu = 60; |
|
|
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BT_DBG("hcon %p conn %p", hcon, conn); |
|
|
|
return conn; |
|
} |
|
|
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/* Delete channel. |
|
* Must be called on the locked socket. */ |
|
static void sco_chan_del(struct sock *sk, int err) |
|
{ |
|
struct sco_conn *conn; |
|
|
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conn = sco_pi(sk)->conn; |
|
|
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BT_DBG("sk %p, conn %p, err %d", sk, conn, err); |
|
|
|
if (conn) { |
|
sco_conn_lock(conn); |
|
conn->sk = NULL; |
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sco_pi(sk)->conn = NULL; |
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sco_conn_unlock(conn); |
|
|
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if (conn->hcon) |
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hci_conn_drop(conn->hcon); |
|
} |
|
|
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sk->sk_state = BT_CLOSED; |
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sk->sk_err = err; |
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sk->sk_state_change(sk); |
|
|
|
sock_set_flag(sk, SOCK_ZAPPED); |
|
} |
|
|
|
static void sco_conn_del(struct hci_conn *hcon, int err) |
|
{ |
|
struct sco_conn *conn = hcon->sco_data; |
|
struct sock *sk; |
|
|
|
if (!conn) |
|
return; |
|
|
|
BT_DBG("hcon %p conn %p, err %d", hcon, conn, err); |
|
|
|
/* Kill socket */ |
|
sco_conn_lock(conn); |
|
sk = conn->sk; |
|
if (sk) |
|
sock_hold(sk); |
|
sco_conn_unlock(conn); |
|
|
|
if (sk) { |
|
lock_sock(sk); |
|
sco_sock_clear_timer(sk); |
|
sco_chan_del(sk, err); |
|
release_sock(sk); |
|
sock_put(sk); |
|
} |
|
|
|
/* Ensure no more work items will run before freeing conn. */ |
|
cancel_delayed_work_sync(&conn->timeout_work); |
|
|
|
hcon->sco_data = NULL; |
|
kfree(conn); |
|
} |
|
|
|
static void __sco_chan_add(struct sco_conn *conn, struct sock *sk, |
|
struct sock *parent) |
|
{ |
|
BT_DBG("conn %p", conn); |
|
|
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sco_pi(sk)->conn = conn; |
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conn->sk = sk; |
|
|
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if (parent) |
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bt_accept_enqueue(parent, sk, true); |
|
} |
|
|
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static int sco_chan_add(struct sco_conn *conn, struct sock *sk, |
|
struct sock *parent) |
|
{ |
|
int err = 0; |
|
|
|
sco_conn_lock(conn); |
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if (conn->sk) |
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err = -EBUSY; |
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else |
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__sco_chan_add(conn, sk, parent); |
|
|
|
sco_conn_unlock(conn); |
|
return err; |
|
} |
|
|
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static int sco_connect(struct hci_dev *hdev, struct sock *sk) |
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{ |
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struct sco_conn *conn; |
|
struct hci_conn *hcon; |
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int err, type; |
|
|
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BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst); |
|
|
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if (lmp_esco_capable(hdev) && !disable_esco) |
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type = ESCO_LINK; |
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else |
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type = SCO_LINK; |
|
|
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if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT && |
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(!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) |
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return -EOPNOTSUPP; |
|
|
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hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst, |
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sco_pi(sk)->setting, &sco_pi(sk)->codec); |
|
if (IS_ERR(hcon)) |
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return PTR_ERR(hcon); |
|
|
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conn = sco_conn_add(hcon); |
|
if (!conn) { |
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hci_conn_drop(hcon); |
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return -ENOMEM; |
|
} |
|
|
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/* Update source addr of the socket */ |
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bacpy(&sco_pi(sk)->src, &hcon->src); |
|
|
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err = sco_chan_add(conn, sk, NULL); |
|
if (err) |
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return err; |
|
|
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if (hcon->state == BT_CONNECTED) { |
|
sco_sock_clear_timer(sk); |
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sk->sk_state = BT_CONNECTED; |
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} else { |
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sk->sk_state = BT_CONNECT; |
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sco_sock_set_timer(sk, sk->sk_sndtimeo); |
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} |
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|
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return err; |
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} |
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|
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static int sco_send_frame(struct sock *sk, struct sk_buff *skb) |
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{ |
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struct sco_conn *conn = sco_pi(sk)->conn; |
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int len = skb->len; |
|
|
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/* Check outgoing MTU */ |
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if (len > conn->mtu) |
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return -EINVAL; |
|
|
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BT_DBG("sk %p len %d", sk, len); |
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|
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hci_send_sco(conn->hcon, skb); |
|
|
|
return len; |
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} |
|
|
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static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb) |
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{ |
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struct sock *sk; |
|
|
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sco_conn_lock(conn); |
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sk = conn->sk; |
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sco_conn_unlock(conn); |
|
|
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if (!sk) |
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goto drop; |
|
|
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BT_DBG("sk %p len %u", sk, skb->len); |
|
|
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if (sk->sk_state != BT_CONNECTED) |
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goto drop; |
|
|
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if (!sock_queue_rcv_skb(sk, skb)) |
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return; |
|
|
|
drop: |
|
kfree_skb(skb); |
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} |
|
|
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/* -------- Socket interface ---------- */ |
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static struct sock *__sco_get_sock_listen_by_addr(bdaddr_t *ba) |
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{ |
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struct sock *sk; |
|
|
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sk_for_each(sk, &sco_sk_list.head) { |
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if (sk->sk_state != BT_LISTEN) |
|
continue; |
|
|
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if (!bacmp(&sco_pi(sk)->src, ba)) |
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return sk; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
/* Find socket listening on source bdaddr. |
|
* Returns closest match. |
|
*/ |
|
static struct sock *sco_get_sock_listen(bdaddr_t *src) |
|
{ |
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struct sock *sk = NULL, *sk1 = NULL; |
|
|
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read_lock(&sco_sk_list.lock); |
|
|
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sk_for_each(sk, &sco_sk_list.head) { |
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if (sk->sk_state != BT_LISTEN) |
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continue; |
|
|
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/* Exact match. */ |
|
if (!bacmp(&sco_pi(sk)->src, src)) |
|
break; |
|
|
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/* Closest match */ |
|
if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY)) |
|
sk1 = sk; |
|
} |
|
|
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read_unlock(&sco_sk_list.lock); |
|
|
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return sk ? sk : sk1; |
|
} |
|
|
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static void sco_sock_destruct(struct sock *sk) |
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{ |
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BT_DBG("sk %p", sk); |
|
|
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skb_queue_purge(&sk->sk_receive_queue); |
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skb_queue_purge(&sk->sk_write_queue); |
|
} |
|
|
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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->hcon) { |
|
sk->sk_state = BT_DISCONN; |
|
sco_sock_set_timer(sk, SCO_DISCONN_TIMEOUT); |
|
sco_conn_lock(sco_pi(sk)->conn); |
|
hci_conn_drop(sco_pi(sk)->conn->hcon); |
|
sco_pi(sk)->conn->hcon = NULL; |
|
sco_conn_unlock(sco_pi(sk)->conn); |
|
} 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) |
|
{ |
|
lock_sock(sk); |
|
sco_sock_clear_timer(sk); |
|
__sco_sock_close(sk); |
|
release_sock(sk); |
|
} |
|
|
|
static void sco_skb_put_cmsg(struct sk_buff *skb, struct msghdr *msg, |
|
struct sock *sk) |
|
{ |
|
if (sco_pi(sk)->cmsg_mask & SCO_CMSG_PKT_STATUS) |
|
put_cmsg(msg, SOL_BLUETOOTH, BT_SCM_PKT_STATUS, |
|
sizeof(bt_cb(skb)->sco.pkt_status), |
|
&bt_cb(skb)->sco.pkt_status); |
|
} |
|
|
|
static void sco_sock_init(struct sock *sk, struct sock *parent) |
|
{ |
|
BT_DBG("sk %p", sk); |
|
|
|
if (parent) { |
|
sk->sk_type = parent->sk_type; |
|
bt_sk(sk)->flags = bt_sk(parent)->flags; |
|
security_sk_clone(parent, sk); |
|
} else { |
|
bt_sk(sk)->skb_put_cmsg = sco_skb_put_cmsg; |
|
} |
|
} |
|
|
|
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, int kern) |
|
{ |
|
struct sock *sk; |
|
|
|
sk = sk_alloc(net, PF_BLUETOOTH, prio, &sco_proto, kern); |
|
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; |
|
|
|
sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT; |
|
sco_pi(sk)->codec.id = BT_CODEC_CVSD; |
|
sco_pi(sk)->codec.cid = 0xffff; |
|
sco_pi(sk)->codec.vid = 0xffff; |
|
sco_pi(sk)->codec.data_path = 0x00; |
|
|
|
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, kern); |
|
if (!sk) |
|
return -ENOMEM; |
|
|
|
sco_sock_init(sk, NULL); |
|
return 0; |
|
} |
|
|
|
static int sco_sock_bind(struct socket *sock, struct sockaddr *addr, |
|
int addr_len) |
|
{ |
|
struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; |
|
struct sock *sk = sock->sk; |
|
int err = 0; |
|
|
|
if (!addr || addr_len < sizeof(struct sockaddr_sco) || |
|
addr->sa_family != AF_BLUETOOTH) |
|
return -EINVAL; |
|
|
|
BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr); |
|
|
|
lock_sock(sk); |
|
|
|
if (sk->sk_state != BT_OPEN) { |
|
err = -EBADFD; |
|
goto done; |
|
} |
|
|
|
if (sk->sk_type != SOCK_SEQPACKET) { |
|
err = -EINVAL; |
|
goto done; |
|
} |
|
|
|
bacpy(&sco_pi(sk)->src, &sa->sco_bdaddr); |
|
|
|
sk->sk_state = BT_BOUND; |
|
|
|
done: |
|
release_sock(sk); |
|
return err; |
|
} |
|
|
|
static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) |
|
{ |
|
struct sockaddr_sco *sa = (struct sockaddr_sco *) addr; |
|
struct sock *sk = sock->sk; |
|
struct hci_dev *hdev; |
|
int err; |
|
|
|
BT_DBG("sk %p", sk); |
|
|
|
if (alen < sizeof(struct sockaddr_sco) || |
|
addr->sa_family != AF_BLUETOOTH) |
|
return -EINVAL; |
|
|
|
if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) |
|
return -EBADFD; |
|
|
|
if (sk->sk_type != SOCK_SEQPACKET) |
|
return -EINVAL; |
|
|
|
hdev = hci_get_route(&sa->sco_bdaddr, &sco_pi(sk)->src, BDADDR_BREDR); |
|
if (!hdev) |
|
return -EHOSTUNREACH; |
|
hci_dev_lock(hdev); |
|
|
|
lock_sock(sk); |
|
|
|
/* Set destination address and psm */ |
|
bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr); |
|
|
|
err = sco_connect(hdev, sk); |
|
hci_dev_unlock(hdev); |
|
hci_dev_put(hdev); |
|
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; |
|
bdaddr_t *src = &sco_pi(sk)->src; |
|
int err = 0; |
|
|
|
BT_DBG("sk %p backlog %d", sk, backlog); |
|
|
|
lock_sock(sk); |
|
|
|
if (sk->sk_state != BT_BOUND) { |
|
err = -EBADFD; |
|
goto done; |
|
} |
|
|
|
if (sk->sk_type != SOCK_SEQPACKET) { |
|
err = -EINVAL; |
|
goto done; |
|
} |
|
|
|
write_lock(&sco_sk_list.lock); |
|
|
|
if (__sco_get_sock_listen_by_addr(src)) { |
|
err = -EADDRINUSE; |
|
goto unlock; |
|
} |
|
|
|
sk->sk_max_ack_backlog = backlog; |
|
sk->sk_ack_backlog = 0; |
|
|
|
sk->sk_state = BT_LISTEN; |
|
|
|
unlock: |
|
write_unlock(&sco_sk_list.lock); |
|
|
|
done: |
|
release_sock(sk); |
|
return err; |
|
} |
|
|
|
static int sco_sock_accept(struct socket *sock, struct socket *newsock, |
|
int flags, bool kern) |
|
{ |
|
DEFINE_WAIT_FUNC(wait, woken_wake_function); |
|
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) { |
|
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 = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); |
|
lock_sock(sk); |
|
} |
|
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 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; |
|
|
|
if (peer) |
|
bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst); |
|
else |
|
bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src); |
|
|
|
return sizeof(struct sockaddr_sco); |
|
} |
|
|
|
static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
|
size_t len) |
|
{ |
|
struct sock *sk = sock->sk; |
|
struct sk_buff *skb; |
|
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; |
|
|
|
skb = bt_skb_sendmsg(sk, msg, len, len, 0, 0); |
|
if (IS_ERR(skb)) |
|
return PTR_ERR(skb); |
|
|
|
lock_sock(sk); |
|
|
|
if (sk->sk_state == BT_CONNECTED) |
|
err = sco_send_frame(sk, skb); |
|
else |
|
err = -ENOTCONN; |
|
|
|
release_sock(sk); |
|
|
|
if (err < 0) |
|
kfree_skb(skb); |
|
return err; |
|
} |
|
|
|
static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting) |
|
{ |
|
struct hci_dev *hdev = conn->hdev; |
|
|
|
BT_DBG("conn %p", conn); |
|
|
|
conn->state = BT_CONFIG; |
|
|
|
if (!lmp_esco_capable(hdev)) { |
|
struct hci_cp_accept_conn_req cp; |
|
|
|
bacpy(&cp.bdaddr, &conn->dst); |
|
cp.role = 0x00; /* Ignored */ |
|
|
|
hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); |
|
} else { |
|
struct hci_cp_accept_sync_conn_req cp; |
|
|
|
bacpy(&cp.bdaddr, &conn->dst); |
|
cp.pkt_type = cpu_to_le16(conn->pkt_type); |
|
|
|
cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
|
cp.rx_bandwidth = cpu_to_le32(0x00001f40); |
|
cp.content_format = cpu_to_le16(setting); |
|
|
|
switch (setting & SCO_AIRMODE_MASK) { |
|
case SCO_AIRMODE_TRANSP: |
|
if (conn->pkt_type & ESCO_2EV3) |
|
cp.max_latency = cpu_to_le16(0x0008); |
|
else |
|
cp.max_latency = cpu_to_le16(0x000D); |
|
cp.retrans_effort = 0x02; |
|
break; |
|
case SCO_AIRMODE_CVSD: |
|
cp.max_latency = cpu_to_le16(0xffff); |
|
cp.retrans_effort = 0xff; |
|
break; |
|
default: |
|
/* use CVSD settings as fallback */ |
|
cp.max_latency = cpu_to_le16(0xffff); |
|
cp.retrans_effort = 0xff; |
|
break; |
|
} |
|
|
|
hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, |
|
sizeof(cp), &cp); |
|
} |
|
} |
|
|
|
static int sco_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
|
size_t len, int flags) |
|
{ |
|
struct sock *sk = sock->sk; |
|
struct sco_pinfo *pi = sco_pi(sk); |
|
|
|
lock_sock(sk); |
|
|
|
if (sk->sk_state == BT_CONNECT2 && |
|
test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { |
|
sco_conn_defer_accept(pi->conn->hcon, pi->setting); |
|
sk->sk_state = BT_CONFIG; |
|
|
|
release_sock(sk); |
|
return 0; |
|
} |
|
|
|
release_sock(sk); |
|
|
|
return bt_sock_recvmsg(sock, msg, len, flags); |
|
} |
|
|
|
static int sco_sock_setsockopt(struct socket *sock, int level, int optname, |
|
sockptr_t optval, unsigned int optlen) |
|
{ |
|
struct sock *sk = sock->sk; |
|
int len, err = 0; |
|
struct bt_voice voice; |
|
u32 opt; |
|
struct bt_codecs *codecs; |
|
struct hci_dev *hdev; |
|
__u8 buffer[255]; |
|
|
|
BT_DBG("sk %p", sk); |
|
|
|
lock_sock(sk); |
|
|
|
switch (optname) { |
|
|
|
case BT_DEFER_SETUP: |
|
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { |
|
err = -EINVAL; |
|
break; |
|
} |
|
|
|
if (copy_from_sockptr(&opt, optval, sizeof(u32))) { |
|
err = -EFAULT; |
|
break; |
|
} |
|
|
|
if (opt) |
|
set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
|
else |
|
clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); |
|
break; |
|
|
|
case BT_VOICE: |
|
if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && |
|
sk->sk_state != BT_CONNECT2) { |
|
err = -EINVAL; |
|
break; |
|
} |
|
|
|
voice.setting = sco_pi(sk)->setting; |
|
|
|
len = min_t(unsigned int, sizeof(voice), optlen); |
|
if (copy_from_sockptr(&voice, optval, len)) { |
|
err = -EFAULT; |
|
break; |
|
} |
|
|
|
/* Explicitly check for these values */ |
|
if (voice.setting != BT_VOICE_TRANSPARENT && |
|
voice.setting != BT_VOICE_CVSD_16BIT) { |
|
err = -EINVAL; |
|
break; |
|
} |
|
|
|
sco_pi(sk)->setting = voice.setting; |
|
hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, |
|
BDADDR_BREDR); |
|
if (!hdev) { |
|
err = -EBADFD; |
|
break; |
|
} |
|
if (enhanced_sco_capable(hdev) && |
|
voice.setting == BT_VOICE_TRANSPARENT) |
|
sco_pi(sk)->codec.id = BT_CODEC_TRANSPARENT; |
|
hci_dev_put(hdev); |
|
break; |
|
|
|
case BT_PKT_STATUS: |
|
if (copy_from_sockptr(&opt, optval, sizeof(u32))) { |
|
err = -EFAULT; |
|
break; |
|
} |
|
|
|
if (opt) |
|
sco_pi(sk)->cmsg_mask |= SCO_CMSG_PKT_STATUS; |
|
else |
|
sco_pi(sk)->cmsg_mask &= SCO_CMSG_PKT_STATUS; |
|
break; |
|
|
|
case BT_CODEC: |
|
if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && |
|
sk->sk_state != BT_CONNECT2) { |
|
err = -EINVAL; |
|
break; |
|
} |
|
|
|
hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, |
|
BDADDR_BREDR); |
|
if (!hdev) { |
|
err = -EBADFD; |
|
break; |
|
} |
|
|
|
if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) { |
|
hci_dev_put(hdev); |
|
err = -EOPNOTSUPP; |
|
break; |
|
} |
|
|
|
if (!hdev->get_data_path_id) { |
|
hci_dev_put(hdev); |
|
err = -EOPNOTSUPP; |
|
break; |
|
} |
|
|
|
if (optlen < sizeof(struct bt_codecs) || |
|
optlen > sizeof(buffer)) { |
|
hci_dev_put(hdev); |
|
err = -EINVAL; |
|
break; |
|
} |
|
|
|
if (copy_from_sockptr(buffer, optval, optlen)) { |
|
hci_dev_put(hdev); |
|
err = -EFAULT; |
|
break; |
|
} |
|
|
|
codecs = (void *)buffer; |
|
|
|
if (codecs->num_codecs > 1) { |
|
hci_dev_put(hdev); |
|
err = -EINVAL; |
|
break; |
|
} |
|
|
|
sco_pi(sk)->codec = codecs->codecs[0]; |
|
hci_dev_put(hdev); |
|
break; |
|
|
|
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 && |
|
!(sk->sk_state == BT_CONNECT2 && |
|
test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { |
|
err = -ENOTCONN; |
|
break; |
|
} |
|
|
|
opts.mtu = sco_pi(sk)->conn->mtu; |
|
|
|
BT_DBG("mtu %u", 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 && |
|
!(sk->sk_state == BT_CONNECT2 && |
|
test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { |
|
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; |
|
struct bt_voice voice; |
|
u32 phys; |
|
int pkt_status; |
|
int buf_len; |
|
struct codec_list *c; |
|
u8 num_codecs, i, __user *ptr; |
|
struct hci_dev *hdev; |
|
struct hci_codec_caps *caps; |
|
struct bt_codec codec; |
|
|
|
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) { |
|
|
|
case BT_DEFER_SETUP: |
|
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { |
|
err = -EINVAL; |
|
break; |
|
} |
|
|
|
if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), |
|
(u32 __user *)optval)) |
|
err = -EFAULT; |
|
|
|
break; |
|
|
|
case BT_VOICE: |
|
voice.setting = sco_pi(sk)->setting; |
|
|
|
len = min_t(unsigned int, len, sizeof(voice)); |
|
if (copy_to_user(optval, (char *)&voice, len)) |
|
err = -EFAULT; |
|
|
|
break; |
|
|
|
case BT_PHY: |
|
if (sk->sk_state != BT_CONNECTED) { |
|
err = -ENOTCONN; |
|
break; |
|
} |
|
|
|
phys = hci_conn_get_phy(sco_pi(sk)->conn->hcon); |
|
|
|
if (put_user(phys, (u32 __user *) optval)) |
|
err = -EFAULT; |
|
break; |
|
|
|
case BT_PKT_STATUS: |
|
pkt_status = (sco_pi(sk)->cmsg_mask & SCO_CMSG_PKT_STATUS); |
|
|
|
if (put_user(pkt_status, (int __user *)optval)) |
|
err = -EFAULT; |
|
break; |
|
|
|
case BT_SNDMTU: |
|
case BT_RCVMTU: |
|
if (sk->sk_state != BT_CONNECTED) { |
|
err = -ENOTCONN; |
|
break; |
|
} |
|
|
|
if (put_user(sco_pi(sk)->conn->mtu, (u32 __user *)optval)) |
|
err = -EFAULT; |
|
break; |
|
|
|
case BT_CODEC: |
|
num_codecs = 0; |
|
buf_len = 0; |
|
|
|
hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, BDADDR_BREDR); |
|
if (!hdev) { |
|
err = -EBADFD; |
|
break; |
|
} |
|
|
|
if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) { |
|
hci_dev_put(hdev); |
|
err = -EOPNOTSUPP; |
|
break; |
|
} |
|
|
|
if (!hdev->get_data_path_id) { |
|
hci_dev_put(hdev); |
|
err = -EOPNOTSUPP; |
|
break; |
|
} |
|
|
|
/* find total buffer size required to copy codec + caps */ |
|
hci_dev_lock(hdev); |
|
list_for_each_entry(c, &hdev->local_codecs, list) { |
|
if (c->transport != HCI_TRANSPORT_SCO_ESCO) |
|
continue; |
|
num_codecs++; |
|
for (i = 0, caps = c->caps; i < c->num_caps; i++) { |
|
buf_len += 1 + caps->len; |
|
caps = (void *)&caps->data[caps->len]; |
|
} |
|
buf_len += sizeof(struct bt_codec); |
|
} |
|
hci_dev_unlock(hdev); |
|
|
|
buf_len += sizeof(struct bt_codecs); |
|
if (buf_len > len) { |
|
hci_dev_put(hdev); |
|
err = -ENOBUFS; |
|
break; |
|
} |
|
ptr = optval; |
|
|
|
if (put_user(num_codecs, ptr)) { |
|
hci_dev_put(hdev); |
|
err = -EFAULT; |
|
break; |
|
} |
|
ptr += sizeof(num_codecs); |
|
|
|
/* Iterate all the codecs supported over SCO and populate |
|
* codec data |
|
*/ |
|
hci_dev_lock(hdev); |
|
list_for_each_entry(c, &hdev->local_codecs, list) { |
|
if (c->transport != HCI_TRANSPORT_SCO_ESCO) |
|
continue; |
|
|
|
codec.id = c->id; |
|
codec.cid = c->cid; |
|
codec.vid = c->vid; |
|
err = hdev->get_data_path_id(hdev, &codec.data_path); |
|
if (err < 0) |
|
break; |
|
codec.num_caps = c->num_caps; |
|
if (copy_to_user(ptr, &codec, sizeof(codec))) { |
|
err = -EFAULT; |
|
break; |
|
} |
|
ptr += sizeof(codec); |
|
|
|
/* find codec capabilities data length */ |
|
len = 0; |
|
for (i = 0, caps = c->caps; i < c->num_caps; i++) { |
|
len += 1 + caps->len; |
|
caps = (void *)&caps->data[caps->len]; |
|
} |
|
|
|
/* copy codec capabilities data */ |
|
if (len && copy_to_user(ptr, c->caps, len)) { |
|
err = -EFAULT; |
|
break; |
|
} |
|
ptr += len; |
|
} |
|
|
|
if (!err && put_user(buf_len, optlen)) |
|
err = -EFAULT; |
|
|
|
hci_dev_unlock(hdev); |
|
hci_dev_put(hdev); |
|
|
|
break; |
|
|
|
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; |
|
|
|
sock_hold(sk); |
|
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 && |
|
!(current->flags & PF_EXITING)) |
|
err = bt_sock_wait_state(sk, BT_CLOSED, |
|
sk->sk_lingertime); |
|
} |
|
|
|
release_sock(sk); |
|
sock_put(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 && |
|
!(current->flags & PF_EXITING)) { |
|
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_conn_ready(struct sco_conn *conn) |
|
{ |
|
struct sock *parent; |
|
struct sock *sk = conn->sk; |
|
|
|
BT_DBG("conn %p", conn); |
|
|
|
if (sk) { |
|
lock_sock(sk); |
|
sco_sock_clear_timer(sk); |
|
sk->sk_state = BT_CONNECTED; |
|
sk->sk_state_change(sk); |
|
release_sock(sk); |
|
} else { |
|
sco_conn_lock(conn); |
|
|
|
if (!conn->hcon) { |
|
sco_conn_unlock(conn); |
|
return; |
|
} |
|
|
|
parent = sco_get_sock_listen(&conn->hcon->src); |
|
if (!parent) { |
|
sco_conn_unlock(conn); |
|
return; |
|
} |
|
|
|
lock_sock(parent); |
|
|
|
sk = sco_sock_alloc(sock_net(parent), NULL, |
|
BTPROTO_SCO, GFP_ATOMIC, 0); |
|
if (!sk) { |
|
release_sock(parent); |
|
sco_conn_unlock(conn); |
|
return; |
|
} |
|
|
|
sco_sock_init(sk, parent); |
|
|
|
bacpy(&sco_pi(sk)->src, &conn->hcon->src); |
|
bacpy(&sco_pi(sk)->dst, &conn->hcon->dst); |
|
|
|
hci_conn_hold(conn->hcon); |
|
__sco_chan_add(conn, sk, parent); |
|
|
|
if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
|
sk->sk_state = BT_CONNECT2; |
|
else |
|
sk->sk_state = BT_CONNECTED; |
|
|
|
/* Wake up parent */ |
|
parent->sk_data_ready(parent); |
|
|
|
release_sock(parent); |
|
|
|
sco_conn_unlock(conn); |
|
} |
|
} |
|
|
|
/* ----- SCO interface with lower layer (HCI) ----- */ |
|
int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags) |
|
{ |
|
struct sock *sk; |
|
int lm = 0; |
|
|
|
BT_DBG("hdev %s, bdaddr %pMR", hdev->name, bdaddr); |
|
|
|
/* Find listening sockets */ |
|
read_lock(&sco_sk_list.lock); |
|
sk_for_each(sk, &sco_sk_list.head) { |
|
if (sk->sk_state != BT_LISTEN) |
|
continue; |
|
|
|
if (!bacmp(&sco_pi(sk)->src, &hdev->bdaddr) || |
|
!bacmp(&sco_pi(sk)->src, BDADDR_ANY)) { |
|
lm |= HCI_LM_ACCEPT; |
|
|
|
if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) |
|
*flags |= HCI_PROTO_DEFER; |
|
break; |
|
} |
|
} |
|
read_unlock(&sco_sk_list.lock); |
|
|
|
return lm; |
|
} |
|
|
|
static void sco_connect_cfm(struct hci_conn *hcon, __u8 status) |
|
{ |
|
if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
|
return; |
|
|
|
BT_DBG("hcon %p bdaddr %pMR status %u", hcon, &hcon->dst, status); |
|
|
|
if (!status) { |
|
struct sco_conn *conn; |
|
|
|
conn = sco_conn_add(hcon); |
|
if (conn) |
|
sco_conn_ready(conn); |
|
} else |
|
sco_conn_del(hcon, bt_to_errno(status)); |
|
} |
|
|
|
static void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason) |
|
{ |
|
if (hcon->type != SCO_LINK && hcon->type != ESCO_LINK) |
|
return; |
|
|
|
BT_DBG("hcon %p reason %d", hcon, reason); |
|
|
|
sco_conn_del(hcon, bt_to_errno(reason)); |
|
} |
|
|
|
void 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 %u", conn, skb->len); |
|
|
|
if (skb->len) { |
|
sco_recv_frame(conn, skb); |
|
return; |
|
} |
|
|
|
drop: |
|
kfree_skb(skb); |
|
} |
|
|
|
static struct hci_cb sco_cb = { |
|
.name = "SCO", |
|
.connect_cfm = sco_connect_cfm, |
|
.disconn_cfm = sco_disconn_cfm, |
|
}; |
|
|
|
static int sco_debugfs_show(struct seq_file *f, void *p) |
|
{ |
|
struct sock *sk; |
|
|
|
read_lock(&sco_sk_list.lock); |
|
|
|
sk_for_each(sk, &sco_sk_list.head) { |
|
seq_printf(f, "%pMR %pMR %d\n", &sco_pi(sk)->src, |
|
&sco_pi(sk)->dst, sk->sk_state); |
|
} |
|
|
|
read_unlock(&sco_sk_list.lock); |
|
|
|
return 0; |
|
} |
|
|
|
DEFINE_SHOW_ATTRIBUTE(sco_debugfs); |
|
|
|
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 = sco_sock_recvmsg, |
|
.poll = bt_sock_poll, |
|
.ioctl = bt_sock_ioctl, |
|
.gettstamp = sock_gettstamp, |
|
.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; |
|
|
|
BUILD_BUG_ON(sizeof(struct sockaddr_sco) > sizeof(struct sockaddr)); |
|
|
|
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; |
|
} |
|
|
|
err = bt_procfs_init(&init_net, "sco", &sco_sk_list, NULL); |
|
if (err < 0) { |
|
BT_ERR("Failed to create SCO proc file"); |
|
bt_sock_unregister(BTPROTO_SCO); |
|
goto error; |
|
} |
|
|
|
BT_INFO("SCO socket layer initialized"); |
|
|
|
hci_register_cb(&sco_cb); |
|
|
|
if (IS_ERR_OR_NULL(bt_debugfs)) |
|
return 0; |
|
|
|
sco_debugfs = debugfs_create_file("sco", 0444, bt_debugfs, |
|
NULL, &sco_debugfs_fops); |
|
|
|
return 0; |
|
|
|
error: |
|
proto_unregister(&sco_proto); |
|
return err; |
|
} |
|
|
|
void sco_exit(void) |
|
{ |
|
bt_procfs_cleanup(&init_net, "sco"); |
|
|
|
debugfs_remove(sco_debugfs); |
|
|
|
hci_unregister_cb(&sco_cb); |
|
|
|
bt_sock_unregister(BTPROTO_SCO); |
|
|
|
proto_unregister(&sco_proto); |
|
} |
|
|
|
module_param(disable_esco, bool, 0644); |
|
MODULE_PARM_DESC(disable_esco, "Disable eSCO connection creation");
|
|
|