bonding: remove bond_vlan_used()
We're using it currently to verify if we have vlans before getting the tag from the skb we're about to send. It's useless because the vlan_get_tag() verifies if the skb has the tag (and returns an error if not), and we can receive tagged skbs only if we *already* have vlans. Plus, the current RCUed implementation is kind of useless anyway - the we can remove the last vlan in the moment we return from the function. So remove the only usage of it and the whole function. CC: Jay Vosburgh <fubar@us.ibm.com> CC: Andy Gospodarek <andy@greyhouse.net> Signed-off-by: NVeaceslav Falico <vfalico@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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