[NET]: Add a dev_ioctl() fallback to sock_ioctl()
Currently all network protocols need to call dev_ioctl as the default
fallback in their ioctl implementations. This patch adds a fallback
to dev_ioctl to sock_ioctl if the protocol returned -ENOIOCTLCMD.
This way all the procotol ioctl handlers can be simplified and we don't
need to export dev_ioctl.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 7c9f192..68afc53 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -434,7 +434,6 @@
int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
- int err = -EINVAL;
switch(cmd)
{
@@ -453,10 +452,9 @@
case SIOCSIFDSTADDR:
return addrconf_set_dstaddr((void __user *) arg);
default:
- if (!sk->sk_prot->ioctl ||
- (err = sk->sk_prot->ioctl(sk, cmd, arg)) == -ENOIOCTLCMD)
- return(dev_ioctl(cmd,(void __user *) arg));
- return err;
+ if (!sk->sk_prot->ioctl)
+ return -ENOIOCTLCMD;
+ return sk->sk_prot->ioctl(sk, cmd, arg);
}
/*NOTREACHED*/
return(0);