From 43cbeee9f9b26300275e4e2d55ed1607f8c5f760 Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Mon, 14 Jul 2008 20:13:51 +0200 Subject: [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 --- net/bluetooth/af_bluetooth.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'net/bluetooth') diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c index 88afe25003d..77fe9b868fe 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; -- cgit v1.2.3