forked from luck/tmp_suning_uos_patched
ip_gre: remove the incorrect mtu limit for ipgre tap
ipgre tap driver calls ether_setup(), after commit61e84623ac
("net: centralize net_device min/max MTU checking"), the range of mtu is [min_mtu, max_mtu], which is [68, 1500] by default. It causes the dev mtu of the ipgre tap device to not be greater than 1500, this limit value is not correct for ipgre tap device. Besides, it's .change_mtu already does the right check. So this patch is just to set max_mtu as 0, and leave the check to it's .change_mtu. Fixes:61e84623ac
("net: centralize net_device min/max MTU checking") 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>
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@ -1310,6 +1310,7 @@ static const struct net_device_ops erspan_netdev_ops = {
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static void ipgre_tap_setup(struct net_device *dev)
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{
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ether_setup(dev);
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dev->max_mtu = 0;
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dev->netdev_ops = &gre_tap_netdev_ops;
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dev->priv_flags &= ~IFF_TX_SKB_SHARING;
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dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
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