[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>

1 files changed, 1 insertions, 18 deletions

diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 296f186802ff..a5144e43aae1 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1763,7 +1763,7 @@ static int atalk_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr
  */
 static int atalk_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 {
-        int rc = -EINVAL;
+        int rc = -ENOIOCTLCMD;
         struct sock *sk = sock->sk;
         void __user *argp = (void __user *)arg;
 
@@ -1813,23 +1813,6 @@ static int atalk_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
                         rc = atif_ioctl(cmd, argp);
                         rtnl_unlock();
                         break;
-                /* Physical layer ioctl calls */
-                case SIOCSIFLINK:
-                case SIOCGIFHWADDR:
-                case SIOCSIFHWADDR:
-                case SIOCGIFFLAGS:
-                case SIOCSIFFLAGS:
-                case SIOCGIFTXQLEN:
-                case SIOCSIFTXQLEN:
-                case SIOCGIFMTU:
-                case SIOCGIFCONF:
-                case SIOCADDMULTI:
-                case SIOCDELMULTI:
-                case SIOCGIFCOUNT:
-                case SIOCGIFINDEX:
-                case SIOCGIFNAME:
-                        rc = dev_ioctl(cmd, argp);
-                        break;
         }
 
         return rc;