const golang.org/x/sys/unix.SOF_TIMESTAMPING_MASK

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L2609: 	SOF_TIMESTAMPING_MASK = 0x7ffff

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)