Commit c7e36705 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by David S. Miller
Browse files

impr: use ->ndo_tunnel_ctl in ipmr_new_tunnel 



Use the new ->ndo_tunnel_ctl instead of overriding the address limit
and using ->ndo_do_ioctl just to do a pointless user copy.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 607259a6

net/ipv4/ipmr.c

+3 −11
Original line number Diff line number Diff line
@@ -442,8 +442,6 @@ static struct net_device *ipmr_new_tunnel(struct net *net, struct vifctl *v) 
{

	struct net_device *tunnel_dev, *new_dev;

	struct ip_tunnel_parm p = { };

	mm_segment_t oldfs = get_fs();

	struct ifreq ifr;

	int err;



	tunnel_dev = __dev_get_by_name(net, "tunl0");
@@ -456,15 +454,11 @@ static struct net_device *ipmr_new_tunnel(struct net *net, struct vifctl *v) 
	p.iph.ihl = 5;

	p.iph.protocol = IPPROTO_IPIP;

	sprintf(p.name, "dvmrp%d", v->vifc_vifi);

	ifr.ifr_ifru.ifru_data = (__force void __user *)&p;



	if (!tunnel_dev->netdev_ops->ndo_do_ioctl)

	if (!tunnel_dev->netdev_ops->ndo_tunnel_ctl)

		goto out;



	set_fs(KERNEL_DS);

	err = tunnel_dev->netdev_ops->ndo_do_ioctl(tunnel_dev, &ifr,

	err = tunnel_dev->netdev_ops->ndo_tunnel_ctl(tunnel_dev, &p,

			SIOCADDTUNNEL);

	set_fs(oldfs);

	if (err)

		goto out;
@@ -481,10 +475,8 @@ static struct net_device *ipmr_new_tunnel(struct net *net, struct vifctl *v) 
	err = dev_set_allmulti(new_dev, 1);

	if (err) {

		dev_close(new_dev);

		set_fs(KERNEL_DS);

		tunnel_dev->netdev_ops->ndo_do_ioctl(tunnel_dev, &ifr,

		tunnel_dev->netdev_ops->ndo_tunnel_ctl(tunnel_dev, &p,

				SIOCDELTUNNEL);

		set_fs(oldfs);

		dev_put(new_dev);

		new_dev = ERR_PTR(err);

	}

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