1 files changed, 15 insertions, 0 deletions

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index afa5730fb3bd..5313ccfdeedf 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -594,6 +594,7 @@ struct xfrm_mgr {
                                            const struct xfrm_migrate *m,
                                            int num_bundles,
                                            const struct xfrm_kmaddress *k);
+        bool                    (*is_alive)(const struct km_event *c);
 };
 
 int xfrm_register_km(struct xfrm_mgr *km);
@@ -1646,6 +1647,20 @@ static inline int xfrm_aevent_is_on(struct net *net)
         rcu_read_unlock();
         return ret;
 }
+
+static inline int xfrm_acquire_is_on(struct net *net)
+{
+        struct sock *nlsk;
+        int ret = 0;
+
+        rcu_read_lock();
+        nlsk = rcu_dereference(net->xfrm.nlsk);
+        if (nlsk)
+                ret = netlink_has_listeners(nlsk, XFRMNLGRP_ACQUIRE);
+        rcu_read_unlock();
+
+        return ret;
+}
 #endif
 
 static inline int xfrm_alg_len(const struct xfrm_algo *alg)