mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 10:32:35 +00:00
e99e88a9d2
This converts all remaining cases of the old setup_timer() API into using timer_setup(), where the callback argument is the structure already holding the struct timer_list. These should have no behavioral changes, since they just change which pointer is passed into the callback with the same available pointers after conversion. It handles the following examples, in addition to some other variations. Casting from unsigned long: void my_callback(unsigned long data) { struct something *ptr = (struct something *)data; ... } ... setup_timer(&ptr->my_timer, my_callback, ptr); and forced object casts: void my_callback(struct something *ptr) { ... } ... setup_timer(&ptr->my_timer, my_callback, (unsigned long)ptr); become: void my_callback(struct timer_list *t) { struct something *ptr = from_timer(ptr, t, my_timer); ... } ... timer_setup(&ptr->my_timer, my_callback, 0); Direct function assignments: void my_callback(unsigned long data) { struct something *ptr = (struct something *)data; ... } ... ptr->my_timer.function = my_callback; have a temporary cast added, along with converting the args: void my_callback(struct timer_list *t) { struct something *ptr = from_timer(ptr, t, my_timer); ... } ... ptr->my_timer.function = (TIMER_FUNC_TYPE)my_callback; And finally, callbacks without a data assignment: void my_callback(unsigned long data) { ... } ... setup_timer(&ptr->my_timer, my_callback, 0); have their argument renamed to verify they're unused during conversion: void my_callback(struct timer_list *unused) { ... } ... timer_setup(&ptr->my_timer, my_callback, 0); The conversion is done with the following Coccinelle script: spatch --very-quiet --all-includes --include-headers \ -I ./arch/x86/include -I ./arch/x86/include/generated \ -I ./include -I ./arch/x86/include/uapi \ -I ./arch/x86/include/generated/uapi -I ./include/uapi \ -I ./include/generated/uapi --include ./include/linux/kconfig.h \ --dir . \ --cocci-file ~/src/data/timer_setup.cocci @fix_address_of@ expression e; @@ setup_timer( -&(e) +&e , ...) // Update any raw setup_timer() usages that have a NULL callback, but // would otherwise match change_timer_function_usage, since the latter // will update all function assignments done in the face of a NULL // function initialization in setup_timer(). @change_timer_function_usage_NULL@ expression _E; identifier _timer; type _cast_data; @@ ( -setup_timer(&_E->_timer, NULL, _E); +timer_setup(&_E->_timer, NULL, 0); | -setup_timer(&_E->_timer, NULL, (_cast_data)_E); +timer_setup(&_E->_timer, NULL, 0); | -setup_timer(&_E._timer, NULL, &_E); +timer_setup(&_E._timer, NULL, 0); | -setup_timer(&_E._timer, NULL, (_cast_data)&_E); +timer_setup(&_E._timer, NULL, 0); ) @change_timer_function_usage@ expression _E; identifier _timer; struct timer_list _stl; identifier _callback; type _cast_func, _cast_data; @@ ( -setup_timer(&_E->_timer, _callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, &_callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, _callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, &_callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)_callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)&_callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E._timer, _callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, _callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, &_callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, &_callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | _E->_timer@_stl.function = _callback; | _E->_timer@_stl.function = &_callback; | _E->_timer@_stl.function = (_cast_func)_callback; | _E->_timer@_stl.function = (_cast_func)&_callback; | _E._timer@_stl.function = _callback; | _E._timer@_stl.function = &_callback; | _E._timer@_stl.function = (_cast_func)_callback; | _E._timer@_stl.function = (_cast_func)&_callback; ) // callback(unsigned long arg) @change_callback_handle_cast depends on change_timer_function_usage@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _origtype; identifier _origarg; type _handletype; identifier _handle; @@ void _callback( -_origtype _origarg +struct timer_list *t ) { ( ... when != _origarg _handletype *_handle = -(_handletype *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg | ... when != _origarg _handletype *_handle = -(void *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(_handletype *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(void *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg ) } // callback(unsigned long arg) without existing variable @change_callback_handle_cast_no_arg depends on change_timer_function_usage && !change_callback_handle_cast@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _origtype; identifier _origarg; type _handletype; @@ void _callback( -_origtype _origarg +struct timer_list *t ) { + _handletype *_origarg = from_timer(_origarg, t, _timer); + ... when != _origarg - (_handletype *)_origarg + _origarg ... when != _origarg } // Avoid already converted callbacks. @match_callback_converted depends on change_timer_function_usage && !change_callback_handle_cast && !change_callback_handle_cast_no_arg@ identifier change_timer_function_usage._callback; identifier t; @@ void _callback(struct timer_list *t) { ... } // callback(struct something *handle) @change_callback_handle_arg depends on change_timer_function_usage && !match_callback_converted && !change_callback_handle_cast && !change_callback_handle_cast_no_arg@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; @@ void _callback( -_handletype *_handle +struct timer_list *t ) { + _handletype *_handle = from_timer(_handle, t, _timer); ... } // If change_callback_handle_arg ran on an empty function, remove // the added handler. @unchange_callback_handle_arg depends on change_timer_function_usage && change_callback_handle_arg@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; identifier t; @@ void _callback(struct timer_list *t) { - _handletype *_handle = from_timer(_handle, t, _timer); } // We only want to refactor the setup_timer() data argument if we've found // the matching callback. This undoes changes in change_timer_function_usage. @unchange_timer_function_usage depends on change_timer_function_usage && !change_callback_handle_cast && !change_callback_handle_cast_no_arg && !change_callback_handle_arg@ expression change_timer_function_usage._E; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type change_timer_function_usage._cast_data; @@ ( -timer_setup(&_E->_timer, _callback, 0); +setup_timer(&_E->_timer, _callback, (_cast_data)_E); | -timer_setup(&_E._timer, _callback, 0); +setup_timer(&_E._timer, _callback, (_cast_data)&_E); ) // If we fixed a callback from a .function assignment, fix the // assignment cast now. @change_timer_function_assignment depends on change_timer_function_usage && (change_callback_handle_cast || change_callback_handle_cast_no_arg || change_callback_handle_arg)@ expression change_timer_function_usage._E; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_func; typedef TIMER_FUNC_TYPE; @@ ( _E->_timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_timer.function = -&_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_timer.function = -(_cast_func)_callback; +(TIMER_FUNC_TYPE)_callback ; | _E->_timer.function = -(_cast_func)&_callback +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -&_callback; +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -(_cast_func)_callback +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -(_cast_func)&_callback +(TIMER_FUNC_TYPE)_callback ; ) // Sometimes timer functions are called directly. Replace matched args. @change_timer_function_calls depends on change_timer_function_usage && (change_callback_handle_cast || change_callback_handle_cast_no_arg || change_callback_handle_arg)@ expression _E; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_data; @@ _callback( ( -(_cast_data)_E +&_E->_timer | -(_cast_data)&_E +&_E._timer | -_E +&_E->_timer ) ) // If a timer has been configured without a data argument, it can be // converted without regard to the callback argument, since it is unused. @match_timer_function_unused_data@ expression _E; identifier _timer; identifier _callback; @@ ( -setup_timer(&_E->_timer, _callback, 0); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, _callback, 0L); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, _callback, 0UL); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E._timer, _callback, 0); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, _callback, 0L); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, _callback, 0UL); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_timer, _callback, 0); +timer_setup(&_timer, _callback, 0); | -setup_timer(&_timer, _callback, 0L); +timer_setup(&_timer, _callback, 0); | -setup_timer(&_timer, _callback, 0UL); +timer_setup(&_timer, _callback, 0); | -setup_timer(_timer, _callback, 0); +timer_setup(_timer, _callback, 0); | -setup_timer(_timer, _callback, 0L); +timer_setup(_timer, _callback, 0); | -setup_timer(_timer, _callback, 0UL); +timer_setup(_timer, _callback, 0); ) @change_callback_unused_data depends on match_timer_function_unused_data@ identifier match_timer_function_unused_data._callback; type _origtype; identifier _origarg; @@ void _callback( -_origtype _origarg +struct timer_list *unused ) { ... when != _origarg } Signed-off-by: Kees Cook <keescook@chromium.org>
1271 lines
25 KiB
C
1271 lines
25 KiB
C
/*
|
|
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/debugfs.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/sched/signal.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)
|
|
};
|
|
|
|
/* ---- SCO connections ---- */
|
|
struct sco_conn {
|
|
struct hci_conn *hcon;
|
|
|
|
spinlock_t lock;
|
|
struct sock *sk;
|
|
|
|
unsigned int mtu;
|
|
};
|
|
|
|
#define sco_conn_lock(c) spin_lock(&c->lock);
|
|
#define sco_conn_unlock(c) spin_unlock(&c->lock);
|
|
|
|
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;
|
|
struct sco_conn *conn;
|
|
};
|
|
|
|
/* ---- SCO timers ---- */
|
|
#define SCO_CONN_TIMEOUT (HZ * 40)
|
|
#define SCO_DISCONN_TIMEOUT (HZ * 2)
|
|
|
|
static void sco_sock_timeout(struct timer_list *t)
|
|
{
|
|
struct sock *sk = from_timer(sk, t, sk_timer);
|
|
|
|
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)
|
|
{
|
|
struct hci_dev *hdev = hcon->hdev;
|
|
struct sco_conn *conn = hcon->sco_data;
|
|
|
|
if (conn)
|
|
return conn;
|
|
|
|
conn = kzalloc(sizeof(struct sco_conn), GFP_KERNEL);
|
|
if (!conn)
|
|
return NULL;
|
|
|
|
spin_lock_init(&conn->lock);
|
|
|
|
hcon->sco_data = conn;
|
|
conn->hcon = hcon;
|
|
|
|
if (hdev->sco_mtu > 0)
|
|
conn->mtu = hdev->sco_mtu;
|
|
else
|
|
conn->mtu = 60;
|
|
|
|
BT_DBG("hcon %p conn %p", hcon, conn);
|
|
|
|
return conn;
|
|
}
|
|
|
|
/* 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_drop(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_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;
|
|
sco_conn_unlock(conn);
|
|
|
|
if (sk) {
|
|
sock_hold(sk);
|
|
bh_lock_sock(sk);
|
|
sco_sock_clear_timer(sk);
|
|
sco_chan_del(sk, err);
|
|
bh_unlock_sock(sk);
|
|
sco_sock_kill(sk);
|
|
sock_put(sk);
|
|
}
|
|
|
|
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);
|
|
|
|
sco_pi(sk)->conn = conn;
|
|
conn->sk = sk;
|
|
|
|
if (parent)
|
|
bt_accept_enqueue(parent, sk);
|
|
}
|
|
|
|
static 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)
|
|
{
|
|
struct sco_conn *conn;
|
|
struct hci_conn *hcon;
|
|
struct hci_dev *hdev;
|
|
int err, type;
|
|
|
|
BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst);
|
|
|
|
hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, BDADDR_BREDR);
|
|
if (!hdev)
|
|
return -EHOSTUNREACH;
|
|
|
|
hci_dev_lock(hdev);
|
|
|
|
if (lmp_esco_capable(hdev) && !disable_esco)
|
|
type = ESCO_LINK;
|
|
else
|
|
type = SCO_LINK;
|
|
|
|
if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT &&
|
|
(!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) {
|
|
err = -EOPNOTSUPP;
|
|
goto done;
|
|
}
|
|
|
|
hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst,
|
|
sco_pi(sk)->setting);
|
|
if (IS_ERR(hcon)) {
|
|
err = PTR_ERR(hcon);
|
|
goto done;
|
|
}
|
|
|
|
conn = sco_conn_add(hcon);
|
|
if (!conn) {
|
|
hci_conn_drop(hcon);
|
|
err = -ENOMEM;
|
|
goto done;
|
|
}
|
|
|
|
/* Update source addr of the socket */
|
|
bacpy(&sco_pi(sk)->src, &hcon->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 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;
|
|
|
|
/* Check outgoing MTU */
|
|
if (len > conn->mtu)
|
|
return -EINVAL;
|
|
|
|
BT_DBG("sk %p len %d", sk, len);
|
|
|
|
skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err);
|
|
if (!skb)
|
|
return err;
|
|
|
|
if (memcpy_from_msg(skb_put(skb, len), msg, len)) {
|
|
kfree_skb(skb);
|
|
return -EFAULT;
|
|
}
|
|
|
|
hci_send_sco(conn->hcon, skb);
|
|
|
|
return len;
|
|
}
|
|
|
|
static void sco_recv_frame(struct sco_conn *conn, struct sk_buff *skb)
|
|
{
|
|
struct sock *sk;
|
|
|
|
sco_conn_lock(conn);
|
|
sk = conn->sk;
|
|
sco_conn_unlock(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_listen_by_addr(bdaddr_t *ba)
|
|
{
|
|
struct sock *sk;
|
|
|
|
sk_for_each(sk, &sco_sk_list.head) {
|
|
if (sk->sk_state != BT_LISTEN)
|
|
continue;
|
|
|
|
if (!bacmp(&sco_pi(sk)->src, ba))
|
|
return sk;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* 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;
|
|
|
|
read_lock(&sco_sk_list.lock);
|
|
|
|
sk_for_each(sk, &sco_sk_list.head) {
|
|
if (sk->sk_state != BT_LISTEN)
|
|
continue;
|
|
|
|
/* Exact match. */
|
|
if (!bacmp(&sco_pi(sk)->src, src))
|
|
break;
|
|
|
|
/* Closest match */
|
|
if (!bacmp(&sco_pi(sk)->src, BDADDR_ANY))
|
|
sk1 = sk;
|
|
}
|
|
|
|
read_unlock(&sco_sk_list.lock);
|
|
|
|
return sk ? 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->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)
|
|
{
|
|
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;
|
|
bt_sk(sk)->flags = bt_sk(parent)->flags;
|
|
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, 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;
|
|
|
|
timer_setup(&sk->sk_timer, sco_sock_timeout, 0);
|
|
|
|
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;
|
|
|
|
BT_DBG("sk %p %pMR", sk, &sa->sco_bdaddr);
|
|
|
|
if (!addr || addr_len < sizeof(struct sockaddr_sco) ||
|
|
addr->sa_family != AF_BLUETOOTH)
|
|
return -EINVAL;
|
|
|
|
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;
|
|
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;
|
|
|
|
lock_sock(sk);
|
|
|
|
/* Set destination address and psm */
|
|
bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr);
|
|
|
|
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;
|
|
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 *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, &sco_pi(sk)->dst);
|
|
else
|
|
bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sco_sock_sendmsg(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 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;
|
|
}
|
|
|
|
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,
|
|
char __user *optval, unsigned int optlen)
|
|
{
|
|
struct sock *sk = sock->sk;
|
|
int len, err = 0;
|
|
struct bt_voice voice;
|
|
u32 opt;
|
|
|
|
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 (get_user(opt, (u32 __user *) optval)) {
|
|
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_user((char *)&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;
|
|
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 %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 &&
|
|
!(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;
|
|
|
|
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;
|
|
|
|
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) {
|
|
sco_sock_clear_timer(sk);
|
|
bh_lock_sock(sk);
|
|
sk->sk_state = BT_CONNECTED;
|
|
sk->sk_state_change(sk);
|
|
bh_unlock_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;
|
|
}
|
|
|
|
bh_lock_sock(parent);
|
|
|
|
sk = sco_sock_alloc(sock_net(parent), NULL,
|
|
BTPROTO_SCO, GFP_ATOMIC, 0);
|
|
if (!sk) {
|
|
bh_unlock_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);
|
|
|
|
bh_unlock_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 %d", 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 %d", 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;
|
|
}
|
|
|
|
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 = sco_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;
|
|
|
|
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");
|