--- linux-4.9.37/include/uapi/linux/snmp.h	2017-07-12 16:42:41.000000000 +0300
+++ linux-4.9.y/include/uapi/linux/snmp.h	2021-06-07 13:01:34.000000000 +0300
@@ -281,6 +281,7 @@
 	LINUX_MIB_TCPKEEPALIVE,			/* TCPKeepAlive */
 	LINUX_MIB_TCPMTUPFAIL,			/* TCPMTUPFail */
 	LINUX_MIB_TCPMTUPSUCCESS,		/* TCPMTUPSuccess */
+	LINUX_MIB_TCPWQUEUETOOBIG,		/* TCPWqueueTooBig */
 	__LINUX_MIB_MAX
 };