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Bluetooth: Simplify HCI socket bind handling 

The HCI socket bind handling checks a few too many times the channel
we are binding. So centralize this and make the function easier to read.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2012-02-20 14:50:35 +01:00 committed by Johan Hedberg
parent 3a208627f3
commit 7cc2ade2cb
1 changed files with 31 additions and 16 deletions
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47
net/bluetooth/hci_sock.c
View File

@ -367,34 +367,49 @@ static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_le
if (haddr.hci_family != AF_BLUETOOTH)
return -EINVAL;
if (haddr.hci_channel > HCI_CHANNEL_CONTROL)
return -EINVAL;
if (haddr.hci_channel == HCI_CHANNEL_CONTROL) {
if (!enable_mgmt)
return -EINVAL;
set_bit(HCI_PI_MGMT_INIT, &hci_pi(sk)->flags);
}
lock_sock(sk);
if (sk->sk_state == BT_BOUND || hci_pi(sk)->hdev) {
if (sk->sk_state == BT_BOUND) {
err = -EALREADY;
goto done;
}
if (haddr.hci_dev != HCI_DEV_NONE) {
hdev = hci_dev_get(haddr.hci_dev);
if (!hdev) {
err = -ENODEV;
switch (haddr.hci_channel) {
case HCI_CHANNEL_RAW:
if (hci_pi(sk)->hdev) {
err = -EALREADY;
goto done;
}
atomic_inc(&hdev->promisc);
if (haddr.hci_dev != HCI_DEV_NONE) {
hdev = hci_dev_get(haddr.hci_dev);
if (!hdev) {
err = -ENODEV;
goto done;
}
atomic_inc(&hdev->promisc);
}
hci_pi(sk)->hdev = hdev;
break;
case HCI_CHANNEL_CONTROL:
if (haddr.hci_dev != HCI_DEV_NONE || !enable_mgmt) {
err = -EINVAL;
goto done;
}
set_bit(HCI_PI_MGMT_INIT, &hci_pi(sk)->flags);
break;
default:
err = -EINVAL;
goto done;
}
hci_pi(sk)->channel = haddr.hci_channel;
hci_pi(sk)->hdev = hdev;
sk->sk_state = BT_BOUND;
done: