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Support IPRequest to specify IP address for interface

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This commit is contained in:
Alona Kaplan
2018-11-28 13:27:49 +02:00
committed by Tomofumi Hayashi
parent d1c8a3d93f
commit f4068d18bd
4 changed files with 65 additions and 34 deletions
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47
multus/multus.go
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@@ -25,6 +25,7 @@ import (
"net"
"os"
"path/filepath"
"strings"
"time"
"github.com/containernetworking/cni/libcni"
@@ -161,7 +162,7 @@ func conflistDel(rt *libcni.RuntimeConf, rawnetconflist []byte, binDir string, e
return err
}
func delegateAdd(exec invoke.Exec, ifName string, delegate *types.DelegateNetConf, rt *libcni.RuntimeConf, binDir string) (cnitypes.Result, error) {
func delegateAdd(exec invoke.Exec, ifName string, delegate *types.DelegateNetConf, rt *libcni.RuntimeConf, binDir string, cniArgs string) (cnitypes.Result, error) {
logging.Debugf("delegateAdd: %v, %s, %v, %v, %s", exec, ifName, delegate, rt, binDir)
if os.Setenv("CNI_IFNAME", ifName) != nil {
return nil, logging.Errorf("Multus: error in setting CNI_IFNAME")
@@ -171,17 +172,40 @@ func delegateAdd(exec invoke.Exec, ifName string, delegate *types.DelegateNetCon
return nil, logging.Errorf("cannot set %q ifname to %q: %v", delegate.Conf.Type, ifName, err)
}
if delegate.MacRequest != "" {
// validate Mac address
_, err := net.ParseMAC(delegate.MacRequest)
if err != nil {
return nil, logging.Errorf("failed to parse mac address %q", delegate.MacRequest)
if delegate.MacRequest != "" || delegate.IPRequest != "" {
if cniArgs != "" {
cniArgs = fmt.Sprintf("%s;IgnoreUnknown=true", cniArgs)
} else {
cniArgs = "IgnoreUnknown=true"
}
if delegate.MacRequest != "" {
// validate Mac address
_, err := net.ParseMAC(delegate.MacRequest)
if err != nil {
return nil, logging.Errorf("failed to parse mac address %q", delegate.MacRequest)
}
cniArgs = fmt.Sprintf("%s;MAC=%s", cniArgs, delegate.MacRequest)
logging.Debugf("Set MAC address %q to %q", delegate.MacRequest, ifName)
}
if os.Setenv("CNI_ARGS",fmt.Sprintf("%s;IgnoreUnknown=true;MAC=%s", os.Getenv("CNI_ARGS"), delegate.MacRequest)) != nil {
return nil, logging.Errorf("cannot set %q mac to %q: %v", delegate.Conf.Type, delegate.MacRequest, err)
if delegate.IPRequest != "" {
// validate IP address
if strings.Contains(delegate.IPRequest, "/") {
_, _, err := net.ParseCIDR(delegate.IPRequest)
if err != nil {
return nil, logging.Errorf("failed to parse CIDR %q", delegate.MacRequest)
}
} else if net.ParseIP(delegate.IPRequest) == nil {
return nil, logging.Errorf("failed to parse IP address %q", delegate.IPRequest)
}
cniArgs = fmt.Sprintf("%s;IP=%s", cniArgs, delegate.IPRequest)
logging.Debugf("Set IP address %q to %q", delegate.IPRequest, ifName)
}
if os.Setenv("CNI_ARGS", cniArgs) != nil {
return nil, logging.Errorf("cannot set %q mac to %q and ip to %q", delegate.Conf.Type, delegate.MacRequest, delegate.IPRequest)
}
logging.Debugf("Set MAC address %q to %q", delegate.MacRequest, ifName)
}
if delegate.ConfListPlugin != false {
@@ -287,11 +311,12 @@ func cmdAdd(args *skel.CmdArgs, exec invoke.Exec, kubeClient k8s.KubeClient) (cn
var netStatus []*types.NetworkStatus
var rt *libcni.RuntimeConf
lastIdx := 0
cniArgs := os.Getenv("CNI_ARGS")
for idx, delegate := range n.Delegates {
lastIdx = idx
ifName := getIfname(delegate, args.IfName, idx)
rt, _ = types.LoadCNIRuntimeConf(args, k8sArgs, ifName, n.RuntimeConfig)
tmpResult, err = delegateAdd(exec, ifName, delegate, rt, n.BinDir)
tmpResult, err = delegateAdd(exec, ifName, delegate, rt, n.BinDir, cniArgs)
if err != nil {
break
}
@@ -426,4 +451,4 @@ func main() {
},
func(args *skel.CmdArgs) error { return cmdDel(args, nil, nil) },
version.All, "meta-plugin that delegates to other CNI plugins")
}
}