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authorMarcel Holtmann <marcel@holtmann.org>2008-07-14 20:13:51 +0200
committerMarcel Holtmann <marcel@holtmann.org>2008-07-14 20:13:51 +0200
commit43cbeee9f9b26300275e4e2d55ed1607f8c5f760 (patch)
tree42ca68acb1043291df2015be01b81c09eeb5fb80 /net/bluetooth/af_bluetooth.c
parent3241ad820dbb172021e0268b5611031991431626 (diff)
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[Bluetooth] Add support for TIOCOUTQ and TIOCINQ ioctls
Almost every protocol family supports the TIOCOUTQ and TIOCINQ ioctls and even Bluetooth could make use of them. When implementing audio streaming and integration with GStreamer or PulseAudio they will allow a better timing and synchronization. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/af_bluetooth.c')
-rw-r--r--net/bluetooth/af_bluetooth.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 88afe25..77fe9b8 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -335,11 +335,34 @@ EXPORT_SYMBOL(bt_sock_poll);
int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
+ struct sk_buff *skb;
+ long amount;
int err;
BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg);
switch (cmd) {
+ case TIOCOUTQ:
+ if (sk->sk_state == BT_LISTEN)
+ return -EINVAL;
+
+ amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
+ if (amount < 0)
+ amount = 0;
+ err = put_user(amount, (int __user *) arg);
+ break;
+
+ case TIOCINQ:
+ if (sk->sk_state == BT_LISTEN)
+ return -EINVAL;
+
+ lock_sock(sk);
+ skb = skb_peek(&sk->sk_receive_queue);
+ amount = skb ? skb->len : 0;
+ release_sock(sk);
+ err = put_user(amount, (int __user *) arg);
+ break;
+
case SIOCGSTAMP:
err = sock_get_timestamp(sk, (struct timeval __user *) arg);
break;