Support for PF_PACKET sockets monitoring interface used by the ss tool.
--- a/net/unix/Kconfig
+++ b/net/unix/Kconfig
-@@ -22,6 +22,7 @@ config UNIX
+@@ -27,6 +27,7 @@ config UNIX_SCM
config UNIX_DIAG
tristate "UNIX: socket monitoring interface"
depends on UNIX