vxlan: Accept user specified MTU value when create new vxlan link
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 commit0dfbdf4102
(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>
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@ -3086,6 +3086,9 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev,
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if (data[IFLA_VXLAN_REMCSUM_NOPARTIAL])
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conf.flags |= VXLAN_F_REMCSUM_NOPARTIAL;
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if (tb[IFLA_MTU])
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conf.mtu = nla_get_u32(tb[IFLA_MTU]);
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err = vxlan_dev_configure(src_net, dev, &conf);
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switch (err) {
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case -ENODEV:
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