net/compat_ioctl: support SIOCWANDEV

This adds compat_ioctl support for SIOCWANDEV, which has
always been missing.

The definition of struct compat_ifreq was missing an
ifru_settings fields that is needed to support SIOCWANDEV,
so add that and clean up the whitespace damage in the
struct definition.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/socket.c

diff --git a/net/socket.c b/net/socket.c
index 224e7f7..befd9f5 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2627,6 +2627,27 @@
 	return dev_ioctl(net, SIOCETHTOOL, ifr);
 }
 
+static int compat_siocwandev(struct net *net, struct compat_ifreq __user *uifr32)
+{
+	void __user *uptr;
+	compat_uptr_t uptr32;
+	struct ifreq __user *uifr;
+
+	uifr = compat_alloc_user_space(sizeof (*uifr));
+	if (copy_in_user(uifr, uifr32, sizeof(struct compat_ifreq)))
+		return -EFAULT;
+
+	if (get_user(uptr32, &uifr32->ifr_settings.ifs_ifsu))
+		return -EFAULT;
+
+	uptr = compat_ptr(uptr32);
+
+	if (put_user(uptr, &uifr->ifr_settings.ifs_ifsu.raw_hdlc))
+		return -EFAULT;
+
+	return dev_ioctl(net, SIOCWANDEV, uifr);
+}
+
 static int bond_ioctl(struct net *net, unsigned int cmd,
 			 struct compat_ifreq __user *ifr32)
 {
@@ -3058,6 +3079,8 @@
 		return dev_ifconf(net, argp);
 	case SIOCETHTOOL:
 		return ethtool_ioctl(net, argp);
+	case SIOCWANDEV:
+		return compat_siocwandev(net, argp);
 	case SIOCBONDENSLAVE:
 	case SIOCBONDRELEASE:
 	case SIOCBONDSETHWADDR: