Virtual Sockets monitoring interface

modulename: vsock_diag.ko

configname: CONFIG_VSOCKETS_DIAG

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Virtual Sockets monitoring interface
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Support for PF_VSOCK sockets monitoring interface used by the ss tool.
If unsure, say Y.

Enable this module so userspace applications can query open sockets.

source code:
net/vmw_vsock/