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ip6_tunnel: fix IFLA_MTU ignored on NEWLINK 

Commit 128bb975dc ("ip6_gre: init dev->mtu and dev->hard_header_len
correctly") fixed IFLA_MTU ignored on NEWLINK for ip6_gre. The same
mtu fix is also needed for ip6_tunnel.

Note that dev->hard_header_len setting for ip6_tunnel works fine,
no need to fix it.

Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
zero-colors
Xin Long 2018-02-27 19:19:40 +08:00 committed by David S. Miller
parent ffc2b6ee41
commit a6aa804462
1 changed files with 8 additions and 4 deletions
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12
net/ipv6/ip6_tunnel.c
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@ -1982,14 +1982,14 @@ static int ip6_tnl_newlink(struct net *src_net, struct net_device *dev,
{
struct net *net = dev_net(dev);
struct ip6_tnl_net *ip6n = net_generic(net, ip6_tnl_net_id);
struct ip6_tnl *nt, *t;
struct ip_tunnel_encap ipencap;
struct ip6_tnl *nt, *t;
int err;
nt = netdev_priv(dev);
if (ip6_tnl_netlink_encap_parms(data, &ipencap)) {
int err = ip6_tnl_encap_setup(nt, &ipencap);
err = ip6_tnl_encap_setup(nt, &ipencap);
if (err < 0)
return err;
}
@ -2005,7 +2005,11 @@ static int ip6_tnl_newlink(struct net *src_net, struct net_device *dev,
return -EEXIST;
}
return ip6_tnl_create2(dev);
err = ip6_tnl_create2(dev);
if (!err && tb[IFLA_MTU])
ip6_tnl_change_mtu(dev, nla_get_u32(tb[IFLA_MTU]));
return err;
}
static int ip6_tnl_changelink(struct net_device *dev, struct nlattr *tb[],