ipsec_polhead_flush
ipsec_polhead_flush(ph, ns);
ipsec_polhead_flush(dph, ns);
ipsec_polhead_flush(&ipss->ipsec_system_policy, ns);
ipsec_polhead_flush(php, ns);
ipsec_polhead_flush(dph, ns);
ipsec_polhead_flush(iph, ns);
extern void ipsec_polhead_flush(ipsec_policy_head_t *, netstack_t *);
ipsec_polhead_flush(itp->itp_policy, ns);
ipsec_polhead_flush(itp->itp_inactive, ns);