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package main
import (
"fmt"
"net"
"runtime"
"github.com/mndrix/tap-go"
"github.com/opencontainers/runtime-tools/cgroups"
"github.com/opencontainers/runtime-tools/validation/util"
)
func testNetworkCgroups() error {
t := tap.New()
t.Header(0)
defer t.AutoPlan()
loIfName := ""
ethIfName := ""
// we try to get the first 2 interfaces on the system, to assign
// the first one to loIfName, the second to ethIfName.
l, err := net.Interfaces()
if err != nil {
// fall back to the default list only with lo
loIfName = "lo"
ethIfName = "eth0"
} else {
loIfName = l[0].Name
ethIfName = l[1].Name
}
cases := []struct {
classid uint32
prio uint32
ifName string
withNetNs bool
withUserNs bool
}{
{255, 10, loIfName, true, true},
{255, 10, loIfName, true, false},
{255, 10, loIfName, false, true},
{255, 10, loIfName, false, false},
{255, 10, ethIfName, true, true},
{255, 10, ethIfName, true, false},
{255, 10, ethIfName, false, true},
{255, 10, ethIfName, false, false},
{255, 30, loIfName, true, true},
{255, 30, loIfName, true, false},
{255, 30, loIfName, false, true},
{255, 30, loIfName, false, false},
{255, 30, ethIfName, true, true},
{255, 30, ethIfName, true, false},
{255, 30, ethIfName, false, true},
{255, 30, ethIfName, false, false},
{550, 10, loIfName, true, true},
{550, 10, loIfName, true, false},
{550, 10, loIfName, false, true},
{550, 10, loIfName, false, false},
{550, 10, ethIfName, true, true},
{550, 10, ethIfName, true, false},
{550, 10, ethIfName, false, true},
{550, 10, ethIfName, false, false},
{550, 30, loIfName, true, true},
{550, 30, loIfName, true, false},
{550, 30, loIfName, false, true},
{550, 30, loIfName, false, false},
{550, 30, ethIfName, true, true},
{550, 30, ethIfName, true, false},
{550, 30, ethIfName, false, true},
{550, 30, ethIfName, false, false},
}
for _, c := range cases {
g, err := util.GetDefaultGenerator()
if err != nil {
return err
}
g.SetLinuxCgroupsPath(cgroups.AbsCgroupPath)
g.SetLinuxResourcesNetworkClassID(c.classid)
g.AddLinuxResourcesNetworkPriorities(c.ifName, c.prio)
if !c.withNetNs {
g.RemoveLinuxNamespace("network")
}
if !c.withUserNs {
g.RemoveLinuxNamespace("user")
}
err = util.RuntimeOutsideValidate(g, t, util.ValidateLinuxResourcesNetwork)
if err != nil {
return err
}
}
return nil
}
func main() {
if "linux" != runtime.GOOS {
util.Fatal(fmt.Errorf("linux-specific cgroup test"))
}
if err := testNetworkCgroups(); err != nil {
util.Fatal(err)
}
}
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