1 files changed, 5 insertions, 2 deletions

diff --git a/include/net/sock.h b/include/net/sock.h
index a6b9a8d1a6df..4827094f1db4 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -60,7 +60,7 @@
 #include <linux/sched.h>
 #include <linux/wait.h>
 #include <linux/cgroup-defs.h>
-
+#include <linux/rbtree.h>
 #include <linux/filter.h>
 #include <linux/rculist_nulls.h>
 #include <linux/poll.h>
@@ -397,7 +397,10 @@ struct sock {
         int                     sk_wmem_queued;
         refcount_t              sk_wmem_alloc;
         unsigned long           sk_tsq_flags;
-        struct sk_buff          *sk_send_head;
+        union {
+                struct sk_buff  *sk_send_head;
+                struct rb_root  tcp_rtx_queue;
+        };
         struct sk_buff_head     sk_write_queue;
         __s32                   sk_peek_off;
         int                     sk_write_pending;