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authorMarcel Holtmann <marcel@holtmann.org>2008-07-14 14:13:51 -0400
committerMarcel Holtmann <marcel@holtmann.org>2008-07-14 14:13:51 -0400
commit43cbeee9f9b26300275e4e2d55ed1607f8c5f760 (patch)
tree42ca68acb1043291df2015be01b81c09eeb5fb80
parent3241ad820dbb172021e0268b5611031991431626 (diff)
[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>
-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 88afe25003d8..77fe9b868fee 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -335,11 +335,34 @@ EXPORT_SYMBOL(bt_sock_poll);
335int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 335int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
336{ 336{
337 struct sock *sk = sock->sk; 337 struct sock *sk = sock->sk;
338 struct sk_buff *skb;
339 long amount;
338 int err; 340 int err;
339 341
340 BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); 342 BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg);
341 343
342 switch (cmd) { 344 switch (cmd) {
345 case TIOCOUTQ:
346 if (sk->sk_state == BT_LISTEN)
347 return -EINVAL;
348
349 amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
350 if (amount < 0)
351 amount = 0;
352 err = put_user(amount, (int __user *) arg);
353 break;
354
355 case TIOCINQ:
356 if (sk->sk_state == BT_LISTEN)
357 return -EINVAL;
358
359 lock_sock(sk);
360 skb = skb_peek(&sk->sk_receive_queue);
361 amount = skb ? skb->len : 0;
362 release_sock(sk);
363 err = put_user(amount, (int __user *) arg);
364 break;
365
343 case SIOCGSTAMP: 366 case SIOCGSTAMP:
344 err = sock_get_timestamp(sk, (struct timeval __user *) arg); 367 err = sock_get_timestamp(sk, (struct timeval __user *) arg);
345 break; 368 break;