xfrm_policy_check
return xfrm_policy_check(sk, dir, skb, AF_INET);
return xfrm_policy_check(sk, dir, skb, AF_INET6);
ret = xfrm_policy_check(NULL, XFRM_POLICY_IN, skb, family);
ret = xfrm_policy_check(NULL, XFRM_POLICY_IN, skb, family);
if (!xfrm_policy_check(sk, XFRM_POLICY_IN, skb, family))
!xfrm_policy_check(NULL, XFRM_POLICY_IN, skb, family))
if (!xfrm_policy_check(NULL, XFRM_POLICY_IN, skb,