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Use *[]net.IP for 'default-route' network selection element.

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This commit is contained in:
Tomofumi Hayashi
2022-01-07 22:47:23 +09:00
parent 8bbb594dad
commit 107624ccff
5 changed files with 114 additions and 38 deletions
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8
pkg/multus/multus.go
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@@ -644,7 +644,7 @@ func CmdAdd(args *skel.CmdArgs, exec invoke.Exec, kubeClient *k8s.ClientInfo) (c
// https://docs.google.com/document/d/1Ny03h6IDVy_e_vmElOqR7UdTPAG_RNydhVE1Kx54kFQ (4.1.2.1.9)
// the list can be empty; if it is, we'll assume the CNI's config for the default gateway holds,
// else we'll update the defaultgateway to the one specified.
if delegate.GatewayRequest != nil && delegate.GatewayRequest[0] != nil {
if delegate.GatewayRequest != nil && len(*delegate.GatewayRequest) != 0 {
deleteV4gateway = true
adddefaultgateway = true
logging.Debugf("Detected gateway override on interface %v to %v", ifName, delegate.GatewayRequest)
@@ -660,7 +660,7 @@ func CmdAdd(args *skel.CmdArgs, exec invoke.Exec, kubeClient *k8s.ClientInfo) (c
// https://docs.google.com/document/d/1Ny03h6IDVy_e_vmElOqR7UdTPAG_RNydhVE1Kx54kFQ (4.1.2.1.9)
// the list can be empty; if it is, we'll assume the CNI's config for the default gateway holds,
// else we'll update the defaultgateway to the one specified.
if delegate.GatewayRequest != nil && delegate.GatewayRequest[0] != nil {
if delegate.GatewayRequest != nil && len(*delegate.GatewayRequest) != 0 {
deleteV6gateway = true
adddefaultgateway = true
logging.Debugf("Detected gateway override on interface %v to %v", ifName, delegate.GatewayRequest)
@@ -681,11 +681,11 @@ func CmdAdd(args *skel.CmdArgs, exec invoke.Exec, kubeClient *k8s.ClientInfo) (c
// Here we'll set the default gateway which specified in `default-route` network selection
if adddefaultgateway {
err = netutils.SetDefaultGW(args, ifName, delegate.GatewayRequest)
err = netutils.SetDefaultGW(args, ifName, *delegate.GatewayRequest)
if err != nil {
return nil, cmdErr(k8sArgs, "error setting default gateway: %v", err)
}
err = netutils.AddDefaultGWCache(n.CNIDir, rt, netName, ifName, delegate.GatewayRequest)
err = netutils.AddDefaultGWCache(n.CNIDir, rt, netName, ifName, *delegate.GatewayRequest)
if err != nil {
return nil, cmdErr(k8sArgs, "error setting default gateway in cache: %v", err)
}

2
pkg/multus/multus_test.go
View File

@@ -68,7 +68,7 @@ type fakeExec struct {
delIndex int
chkIndex int
expectedDelSkip int
plugins map[string]*fakePlugin
plugins map[string]*fakePlugin
}
func newFakeExec() *fakeExec {

70
pkg/types/conf.go
View File

@@ -60,9 +60,9 @@ func LoadDelegateNetConfList(bytes []byte, delegateConf *DelegateNetConf) error
}
// LoadDelegateNetConf converts raw CNI JSON into a DelegateNetConf structure
func LoadDelegateNetConf(bytes []byte, net *NetworkSelectionElement, deviceID string, resourceName string) (*DelegateNetConf, error) {
func LoadDelegateNetConf(bytes []byte, netElement *NetworkSelectionElement, deviceID string, resourceName string) (*DelegateNetConf, error) {
var err error
logging.Debugf("LoadDelegateNetConf: %s, %v, %s", string(bytes), net, deviceID)
logging.Debugf("LoadDelegateNetConf: %s, %v, %s", string(bytes), netElement, deviceID)
delegateConf := &DelegateNetConf{}
if err := json.Unmarshal(bytes, &delegateConf.Conf); err != nil {
@@ -81,8 +81,8 @@ func LoadDelegateNetConf(bytes []byte, net *NetworkSelectionElement, deviceID st
return nil, logging.Errorf("LoadDelegateNetConf: failed to add deviceID in NetConfList bytes: %v", err)
}
}
if net != nil && net.CNIArgs != nil {
bytes, err = addCNIArgsInConfList(bytes, net.CNIArgs)
if netElement != nil && netElement.CNIArgs != nil {
bytes, err = addCNIArgsInConfList(bytes, netElement.CNIArgs)
if err != nil {
return nil, logging.Errorf("LoadDelegateNetConf(): failed to add cni-args in NetConfList bytes: %v", err)
}
@@ -97,45 +97,51 @@ func LoadDelegateNetConf(bytes []byte, net *NetworkSelectionElement, deviceID st
delegateConf.ResourceName = resourceName
delegateConf.DeviceID = deviceID
}
if net != nil && net.CNIArgs != nil {
bytes, err = addCNIArgsInConfig(bytes, net.CNIArgs)
if netElement != nil && netElement.CNIArgs != nil {
bytes, err = addCNIArgsInConfig(bytes, netElement.CNIArgs)
if err != nil {
return nil, logging.Errorf("LoadDelegateNetConf(): failed to add cni-args in NetConfList bytes: %v", err)
}
}
}
if net != nil {
if net.Name != "" {
if netElement != nil {
if netElement.Name != "" {
// Overwrite CNI config name with net-attach-def name
delegateConf.Name = fmt.Sprintf("%s/%s", net.Namespace, net.Name)
delegateConf.Name = fmt.Sprintf("%s/%s", netElement.Namespace, netElement.Name)
}
if net.InterfaceRequest != "" {
delegateConf.IfnameRequest = net.InterfaceRequest
if netElement.InterfaceRequest != "" {
delegateConf.IfnameRequest = netElement.InterfaceRequest
}
if net.MacRequest != "" {
delegateConf.MacRequest = net.MacRequest
if netElement.MacRequest != "" {
delegateConf.MacRequest = netElement.MacRequest
}
if net.IPRequest != nil {
delegateConf.IPRequest = net.IPRequest
if netElement.IPRequest != nil {
delegateConf.IPRequest = netElement.IPRequest
}
if net.BandwidthRequest != nil {
delegateConf.BandwidthRequest = net.BandwidthRequest
if netElement.BandwidthRequest != nil {
delegateConf.BandwidthRequest = netElement.BandwidthRequest
}
if net.PortMappingsRequest != nil {
delegateConf.PortMappingsRequest = net.PortMappingsRequest
if netElement.PortMappingsRequest != nil {
delegateConf.PortMappingsRequest = netElement.PortMappingsRequest
}
if net.GatewayRequest != nil {
delegateConf.GatewayRequest = append(delegateConf.GatewayRequest, net.GatewayRequest...)
if netElement.GatewayRequest != nil {
var list []net.IP
if delegateConf.GatewayRequest != nil {
list = append(*delegateConf.GatewayRequest, *netElement.GatewayRequest...)
} else {
list = *netElement.GatewayRequest
}
delegateConf.GatewayRequest = &list
}
if net.InfinibandGUIDRequest != "" {
delegateConf.InfinibandGUIDRequest = net.InfinibandGUIDRequest
if netElement.InfinibandGUIDRequest != "" {
delegateConf.InfinibandGUIDRequest = netElement.InfinibandGUIDRequest
}
if net.DeviceID != "" {
if netElement.DeviceID != "" {
if deviceID != "" {
logging.Debugf("Warning: Both RuntimeConfig and ResourceMap provide deviceID. Ignoring RuntimeConfig")
} else {
delegateConf.DeviceID = net.DeviceID
delegateConf.DeviceID = netElement.DeviceID
}
}
}
@@ -545,11 +551,13 @@ func CheckGatewayConfig(delegates []*DelegateNetConf) error {
// Check the gateway
for _, delegate := range delegates {
for _, gw := range delegate.GatewayRequest {
if gw.To4() != nil {
v4Gateways++
} else {
v6Gateways++
if delegate.GatewayRequest != nil {
for _, gw := range *delegate.GatewayRequest {
if gw.To4() != nil {
v4Gateways++
} else {
v6Gateways++
}
}
}
}
@@ -565,7 +573,7 @@ func CheckGatewayConfig(delegates []*DelegateNetConf) error {
delegates[i].IsFilterV4Gateway = true
delegates[i].IsFilterV6Gateway = true
} else {
for _, gw := range delegate.GatewayRequest {
for _, gw := range *delegate.GatewayRequest {
if gw.To4() != nil {
delegates[i].IsFilterV6Gateway = true
} else {

68
pkg/types/conf_test.go
View File

@@ -909,4 +909,72 @@ var _ = Describe("config operations", func() {
Expect(n.Delegates[0].Name).To(Equal("weave-list"))
})
It("test LoadDelegateNetConf keeps without GatewayRequest", func() {
conf := `{
"name": "node-cni-network",
"type": "multus",
"kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
"delegates": [{
"name": "weave-list",
"plugins": [ {"type" :"weave"} ]
}]
}`
nsJSON := `{ "name": "foobar" }`
ns := &NetworkSelectionElement{}
err := json.Unmarshal([]byte(nsJSON), ns)
Expect(err).NotTo(HaveOccurred())
netconf, err := LoadDelegateNetConf([]byte(conf), ns, "", "")
Expect(err).NotTo(HaveOccurred())
Expect(netconf.GatewayRequest).To(BeNil())
})
It("test LoadDelegateNetConf keeps empty GatewayRequest", func() {
conf := `{
"name": "node-cni-network",
"type": "multus",
"kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
"delegates": [{
"name": "weave-list",
"plugins": [ {"type" :"weave"} ]
}]
}`
nsJSON := `{ "name": "foobar", "default-route": [] }`
ns := &NetworkSelectionElement{}
err := json.Unmarshal([]byte(nsJSON), ns)
Expect(err).NotTo(HaveOccurred())
netconf, err := LoadDelegateNetConf([]byte(conf), ns, "", "")
Expect(err).NotTo(HaveOccurred())
Expect(netconf.GatewayRequest).NotTo(BeNil())
Expect(len(*netconf.GatewayRequest)).To(BeEquivalentTo(0))
})
It("test LoadDelegateNetConf keeps GatewayRequest", func() {
conf := `{
"name": "node-cni-network",
"type": "multus",
"kubeconfig": "/etc/kubernetes/node-kubeconfig.yaml",
"delegates": [{
"name": "weave-list",
"plugins": [ {"type" :"weave"} ]
}]
}`
nsJSON := `{ "name": "foobar", "default-route": [ "10.1.1.1" ] }`
ns := &NetworkSelectionElement{}
err := json.Unmarshal([]byte(nsJSON), ns)
Expect(err).NotTo(HaveOccurred())
netconf, err := LoadDelegateNetConf([]byte(conf), ns, "", "")
Expect(err).NotTo(HaveOccurred())
Expect(netconf.GatewayRequest).NotTo(BeNil())
Expect(len(*netconf.GatewayRequest)).To(BeEquivalentTo(1))
})
})

4
pkg/types/types.go
View File

@@ -99,7 +99,7 @@ type DelegateNetConf struct {
IPRequest []string `json:"ipRequest,omitempty"`
PortMappingsRequest []*PortMapEntry `json:"-"`
BandwidthRequest *BandwidthEntry `json:"-"`
GatewayRequest []net.IP `json:"default-route,omitempty"`
GatewayRequest *[]net.IP `json:"default-route,omitempty"`
IsFilterV4Gateway bool
IsFilterV6Gateway bool
// MasterPlugin is only used internal housekeeping
@@ -150,7 +150,7 @@ type NetworkSelectionElement struct {
// CNIArgs contains additional CNI arguments for the network interface
CNIArgs *map[string]interface{} `json:"cni-args"`
// GatewayRequest contains default route IP address for the pod
GatewayRequest []net.IP `json:"default-route,omitempty"`
GatewayRequest *[]net.IP `json:"default-route,omitempty"`
}
// K8sArgs is the valid CNI_ARGS used for Kubernetes