net: sched: act_nat: remove dependency on rtnl lock
According to the new locking rule, we have to take tcf_lock for both ->init() and ->dump(), as RTNL will be removed. Use tcf spinlock to protect private nat action data from concurrent modification during dump. (nat init already uses tcf spinlock when changing action state) Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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