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vxlan: Accept user specified MTU value when create new vxlan link

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When create a new vxlan link, example:
  ip link add vtap mtu 1440 type vxlan vni 1 dev eth0

The argument "mtu" has no effect, because it is not set to conf->mtu. The
default value is used in vxlan_dev_configure function.

This problem was introduced by commit 0dfbdf4102 (vxlan: Factor out device
configuration).

Fixes: 0dfbdf4102 (vxlan: Factor out device configuration)
Signed-off-by:  Chen Haiquan <oc@yunify.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Chen Haiquan 2016-05-27 10:49:11 +08:00 committed by David S. Miller
parent bcf91bdb44
commit ce577668a4
1 changed files with 3 additions and 0 deletions
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3
drivers/net/vxlan.c
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@ -3086,6 +3086,9 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev,
if (data[IFLA_VXLAN_REMCSUM_NOPARTIAL])
conf.flags |= VXLAN_F_REMCSUM_NOPARTIAL;
if (tb[IFLA_MTU])
conf.mtu = nla_get_u32(tb[IFLA_MTU]);
err = vxlan_dev_configure(src_net, dev, &conf);
switch (err) {
case -ENODEV: