x/sys/unix: missing SOL_TIMESTAMPING_RX_HARDWARE constant(s)?

[xuesongbj]

Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

Go version 1.10.4 linux/amd64

Does this issue reproduce with the latest release?

No(1.10.4)

What operating system and processor architecture are you using (go env)?

GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/David/Library/Caches/go-build"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/David/data/go/go.deps:/Users/David/data/go/go.test"
GORACE=""
GOROOT="/Users/David/data/go1.10"
GOTMPDIR=""
GOTOOLDIR="/Users/David/data/go1.10/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -gno-record-gcc-switches -fno-common"

What did you do?

The system call does not support the SO_TIMESTAMPING setting. Unable to get the socket to return the raw unmodified packet timestamp generated by the hardware.

No SOF_TIMESTAMPING_RX_HARDWARE constant found.

syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SOF_TIMESTAMPING_RX_HARDWARE, 1)

What did you expect to see?

Able to support this feature.

What did you see instead?

undefined: syscall.SOF_TIMESTAMPING_RX_HARDWARE

[agnivade]

I can see SO_TIMESTAMPING = 0x25 in https://golang.org/pkg/syscall/#pkg-constants.

Is this not what you want ?

[bradfitz]

The syscall package is frozen.

If we're missing a constant, it can be added to golang.org/x/sys/unix.

/cc @tklauser

[xuesongbj]

Very looking forward to! @bradfitz @tklauser

[gopherbot]

Change https://golang.org/cl/143337 mentions this issue: unix: add SOF_TIMESTAMPING_* flags on Linux