diff --git a/[refs] b/[refs]
index 4586fcb8b205..57eb77639f48 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e6bccd357343e98db9e1fd0d487f4f924e1a7921
+refs/heads/master: 837d107cd101fbf734e9ea2bbb5c7336a329e432
diff --git a/trunk/net/dccp/dccp.h b/trunk/net/dccp/dccp.h
index b8931d33bec3..a5c5475724c0 100644
--- a/trunk/net/dccp/dccp.h
+++ b/trunk/net/dccp/dccp.h
@@ -81,6 +81,14 @@ static inline u64 max48(const u64 seq1, const u64 seq2)
 	return after48(seq1, seq2) ? seq1 : seq2;
 }
 
+/* is seq1 next seqno after seq2 */
+static inline int follows48(const u64 seq1, const u64 seq2)
+{
+	int diff = (seq1 & 0xFFFF) - (seq2 & 0xFFFF);
+
+	return diff==1;
+}
+
 enum {
 	DCCP_MIB_NUM = 0,
 	DCCP_MIB_ACTIVEOPENS,			/* ActiveOpens */