xfrm: invalidate dst on policy insertion/deletion

When a policy is inserted or deleted, all dst should be recalculated.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/xfrm/xfrm_policy.c

@@ -585,6 +585,7 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
 	xfrm_pol_hold(policy);
 	net->xfrm.policy_count[dir]++;
 	atomic_inc(&flow_cache_genid);
+	rt_genid_bump(net);
 	if (delpol)
 		__xfrm_policy_unlink(delpol, dir);
 	policy->index = delpol ? delpol->index : xfrm_gen_index(net, dir);

security/selinux/include/xfrm.h

@@ -51,6 +51,7 @@ int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall);
 static inline void selinux_xfrm_notify_policyload(void)
 {
 	atomic_inc(&flow_cache_genid);
+	rt_genid_bump(&init_net);
 }
 #else
 static inline int selinux_xfrm_enabled(void)