Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/net/inet_ecn.h b/include/net/inet_ecn.h
index 482a1b7..c8e2beb 100644
--- a/include/net/inet_ecn.h
+++ b/include/net/inet_ecn.h
@@ -183,8 +183,7 @@
  *          1 if something is broken and should be logged (!!! above)
  *          2 if packet should be dropped
  */
-static inline int INET_ECN_decapsulate(struct sk_buff *skb,
-				       __u8 outer, __u8 inner)
+static inline int __INET_ECN_decapsulate(__u8 outer, __u8 inner, bool *set_ce)
 {
 	if (INET_ECN_is_not_ect(inner)) {
 		switch (outer & INET_ECN_MASK) {
@@ -198,10 +197,21 @@
 		}
 	}
 
-	if (INET_ECN_is_ce(outer))
+	*set_ce = INET_ECN_is_ce(outer);
+	return 0;
+}
+
+static inline int INET_ECN_decapsulate(struct sk_buff *skb,
+				       __u8 outer, __u8 inner)
+{
+	bool set_ce = false;
+	int rc;
+
+	rc = __INET_ECN_decapsulate(outer, inner, &set_ce);
+	if (!rc && set_ce)
 		INET_ECN_set_ce(skb);
 
-	return 0;
+	return rc;
 }
 
 static inline int IP_ECN_decapsulate(const struct iphdr *oiph,