ipconfig: use dev_set_mtu()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 14 deletions

diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 5f396afaa08d..f75802ad960f 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -329,17 +329,6 @@ set_sockaddr(struct sockaddr_in *sin, __be32 addr, __be16 port)
         sin->sin_port = port;
 }
 
-static int __init ic_dev_ioctl(unsigned int cmd, struct ifreq *arg)
-{
-        int res;
-
-        mm_segment_t oldfs = get_fs();
-        set_fs(get_ds());
-        res = dev_ioctl(&init_net, cmd, (struct ifreq __user *) arg);
-        set_fs(oldfs);
-        return res;
-}
-
 /*
  *      Set up interface addresses and routes.
  */
@@ -375,11 +364,11 @@ static int __init ic_setup_if(void)
          * out, we'll try to muddle along.
          */
         if (ic_dev_mtu != 0) {
-                strcpy(ir.ifr_name, ic_dev->dev->name);
-                ir.ifr_mtu = ic_dev_mtu;
-                if ((err = ic_dev_ioctl(SIOCSIFMTU, &ir)) < 0)
+                rtnl_lock();
+                if ((err = dev_set_mtu(ic_dev->dev, ic_dev_mtu)) < 0)
                         pr_err("IP-Config: Unable to set interface mtu to %d (%d)\n",
                                ic_dev_mtu, err);
+                rtnl_unlock();
         }
         return 0;
 }