add ns support mips64le arch

[davidstack]

go env info
[root@node152 weaver]# go env
GOARCH="mips64le"
GOBIN=""
GOCACHE="/root/.cache/go-build"
GOEXE=""
GOHOSTARCH="mips64le"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/root/goworkspace"
GORACE=""
GOROOT="/home/longxin/workspace/go"
GOTMPDIR=""
GOTOOLDIR="/home/longxin/workspace/go/pkg/tool/linux_mips64le"
GCCGO="gccgo"
CC="gcc"
CXX="g++"
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 -mabi=64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build929428261=/tmp/go-build -gno-record-gcc-switches"

[tklauser]

Alternatively, SYS_NETNS from golang.org/x/sys/unix (which is already a dependency) could be used to replace this, i.e.

import "golang.org/x/sys/unix"
...
var SYS_SETNS = unix.SYS_SETNS

[davidstack]

@tklauser ,yes,but so many go projects use vishvananda/netns, maybe this is useful to add mips64le in this project

[tklauser]

@davidstack using unix.SETNS will also support mips64le and all other GOARCH'es supported by the golang.org/x/sys/unix package. And this without having to maintain a manual list of syscall numbers in this package.

[aboch]

LGTM