mISDN: Added layer-1-hold feature
Add IMHOLD_L1 ioctl.
The feature will be disabled on closing.
Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c
index 508945d..530f689 100644
--- a/drivers/isdn/mISDN/socket.c
+++ b/drivers/isdn/mISDN/socket.c
@@ -292,7 +292,7 @@
data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p)
{
struct mISDN_ctrl_req cq;
- int err = -EINVAL, val;
+ int err = -EINVAL, val[2];
struct mISDNchannel *bchan, *next;
lock_sock(sk);
@@ -328,12 +328,27 @@
err = -EINVAL;
break;
}
- if (get_user(val, (int __user *)p)) {
+ val[0] = cmd;
+ if (get_user(val[1], (int __user *)p)) {
err = -EFAULT;
break;
}
err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr,
- CONTROL_CHANNEL, &val);
+ CONTROL_CHANNEL, val);
+ break;
+ case IMHOLD_L1:
+ if (sk->sk_protocol != ISDN_P_LAPD_NT
+ && sk->sk_protocol != ISDN_P_LAPD_TE) {
+ err = -EINVAL;
+ break;
+ }
+ val[0] = cmd;
+ if (get_user(val[1], (int __user *)p)) {
+ err = -EFAULT;
+ break;
+ }
+ err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr,
+ CONTROL_CHANNEL, val);
break;
default:
err = -EINVAL;