vxlan: set needed headroom correctly
vxlan_setup is called when allocating the net_device, i.e. way before vxlan_newlink (or vxlan_dev_configure) is called. This means vxlan->default_dst is actually unset in vxlan_setup and the condition that sets needed_headroom always takes the else branch. Set the needed_headrom at the point when we have the information about the address family available. Fixes: e4c7ed41 ("vxlan: add ipv6 support") Fixes: 2853af6a ("vxlan: use dev->needed_headroom instead of dev->hard_header_len") CC: Cong Wang <cwang@twopensource.com> Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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