diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 4cf3550..fe2efd9 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -227,6 +227,7 @@ struct mptcp_sock {
 	unsigned long	timer_ival;
 	u32		token;
 	int		rmem_pending;
+	int		rmem_released;
 	unsigned long	flags;
 	bool		can_ack;
 	bool		fully_established;
@@ -238,6 +239,7 @@ struct mptcp_sock {
 	struct work_struct work;
 	struct sk_buff  *ooo_last_skb;
 	struct rb_root  out_of_order_queue;
+	struct sk_buff_head receive_queue;
 	struct list_head conn_list;
 	struct list_head rtx_queue;
 	struct mptcp_data_frag *first_pending;
@@ -267,6 +269,9 @@ struct mptcp_sock {
 	local_bh_enable();						\
 } while (0)
 
+#define mptcp_data_lock(sk) spin_lock_bh(&(sk)->sk_lock.slock)
+#define mptcp_data_unlock(sk) spin_unlock_bh(&(sk)->sk_lock.slock)
+
 #define mptcp_for_each_subflow(__msk, __subflow)			\
 	list_for_each_entry(__subflow, &((__msk)->conn_list), node)