Function pf_src_tree_remove_state

freebsd/netpfil/pf/pf.c:1645–1675

}

static void
pf_src_tree_remove_state(struct pf_state *s)
{
	struct pf_ksrc_node *sn;
	struct pf_srchash *sh;
	uint32_t timeout;

	timeout = s->rule.ptr->timeout[PFTM_SRC_NODE] ?
	    s->rule.ptr->timeout[PFTM_SRC_NODE] :
	    V_pf_default_rule.timeout[PFTM_SRC_NODE];

	if (s->src_node != NULL) {
		sn = s->src_node;
		sh = &V_pf_srchash[pf_hashsrc(&sn->addr, sn->af)];
	    	PF_HASHROW_LOCK(sh);
		if (s->src.tcp_est)
			--sn->conn;
		if (--sn->states == 0)
			sn->expire = time_uptime + timeout;
	    	PF_HASHROW_UNLOCK(sh);
	}
	if (s->nat_src_node != s->src_node && s->nat_src_node != NULL) {
		sn = s->nat_src_node;
		sh = &V_pf_srchash[pf_hashsrc(&sn->addr, sn->af)];
	    	PF_HASHROW_LOCK(sh);
		if (--sn->states == 0)
			sn->expire = time_uptime + timeout;
	    	PF_HASHROW_UNLOCK(sh);
	}
	s->src_node = s->nat_src_node = NULL;
}

/*
 * Unlink and potentilly free a state. Function may be