netns xfrm: per-netns km_waitq

Disallow spurious wakeups in __xfrm_lookup().

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 3 insertions, 1 deletions

diff --git a/include/net/netns/xfrm.h b/include/net/netns/xfrm.h
index 80555351fe5e..2a383c8ba1af 100644
--- a/include/net/netns/xfrm.h
+++ b/include/net/netns/xfrm.h
@@ -2,6 +2,7 @@
 #define __NETNS_XFRM_H
 
 #include <linux/list.h>
+#include <linux/wait.h>
 #include <linux/workqueue.h>
 
 struct netns_xfrm {
@@ -22,6 +23,8 @@ struct netns_xfrm {
         struct work_struct      state_hash_work;
         struct hlist_head       state_gc_list;
         struct work_struct      state_gc_work;
+
+        wait_queue_head_t       km_waitq;
 };
 
 #endif
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 9da89039832c..0d4353c11093 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -1459,7 +1459,6 @@ extern int xfrm_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
                         struct xfrm_kmaddress *k);
 #endif
 
-extern wait_queue_head_t km_waitq;
 extern int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);
 extern void km_policy_expired(struct xfrm_policy *pol, int dir, int hard, u32 pid);
 extern int km_report(u8 proto, struct xfrm_selector *sel, xfrm_address_t *addr);