--- zzzz-none-000/linux-4.1.52/include/net/netfilter/nf_conntrack_expect.h	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/include/net/netfilter/nf_conntrack_expect.h	2022-03-02 11:37:13.000000000 +0000
@@ -42,6 +42,12 @@
 	/* Expectation class */
 	unsigned int class;
 
+#if defined(CONFIG_BCM_KF_NETFILTER)
+	unsigned derived_timeout; /* 0 means no derived_timeout, 0xFFFFFFFF
+				   * means never timeout until master ct is
+				   * disconnected, others means timeout secs */
+#endif
+
 #ifdef CONFIG_NF_NAT_NEEDED
 	union nf_inet_addr saved_addr;
 	/* This is the original per-proto part, used to map the
@@ -69,6 +75,10 @@
 
 #define NF_CT_EXPECT_CLASS_DEFAULT	0
 
+#if defined(CONFIG_BCM_KF_NETFILTER)
+#define NF_CT_EXPECT_DERIVED_TIMEOUT 0x80
+#endif
+
 int nf_conntrack_expect_pernet_init(struct net *net);
 void nf_conntrack_expect_pernet_fini(struct net *net);