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-rw-r--r--libpod/network/config.go5
-rw-r--r--libpod/network/create.go15
-rw-r--r--libpod/network/netconflist.go16
-rw-r--r--libpod/networking_linux.go14
-rw-r--r--libpod/options.go29
-rw-r--r--libpod/pod.go1
-rw-r--r--libpod/runtime_pod_infra_linux.go14
7 files changed, 82 insertions, 12 deletions
diff --git a/libpod/network/config.go b/libpod/network/config.go
index ce351129e..294e23509 100644
--- a/libpod/network/config.go
+++ b/libpod/network/config.go
@@ -103,7 +103,9 @@ func (p PortMapConfig) Bytes() ([]byte, error) {
// IPAMDHCP describes the ipamdhcp config
type IPAMDHCP struct {
- DHCP string `json:"type"`
+ DHCP string `json:"type"`
+ Routes []IPAMRoute `json:"routes,omitempty"`
+ Ranges [][]IPAMLocalHostRangeConf `json:"ranges,omitempty"`
}
// MacVLANConfig describes the macvlan config
@@ -111,6 +113,7 @@ type MacVLANConfig struct {
PluginType string `json:"type"`
Master string `json:"master"`
IPAM IPAMDHCP `json:"ipam"`
+ MTU int `json:"mtu,omitempty"`
}
// Bytes outputs the configuration as []byte
diff --git a/libpod/network/create.go b/libpod/network/create.go
index 88310a79c..deacf487a 100644
--- a/libpod/network/create.go
+++ b/libpod/network/create.go
@@ -249,6 +249,7 @@ func createBridge(name string, options entities.NetworkCreateOptions, runtimeCon
func createMacVLAN(name string, options entities.NetworkCreateOptions, runtimeConfig *config.Config) (string, error) {
var (
+ mtu int
plugins []CNIPlugins
)
liveNetNames, err := GetLiveNetworkNames()
@@ -283,7 +284,19 @@ func createMacVLAN(name string, options entities.NetworkCreateOptions, runtimeCo
}
}
ncList := NewNcList(name, version.Current(), options.Labels)
- macvlan := NewMacVLANPlugin(parentNetworkDevice)
+ if val, ok := options.Options["mtu"]; ok {
+ intVal, err := strconv.Atoi(val)
+ if err != nil {
+ return "", err
+ }
+ if intVal > 0 {
+ mtu = intVal
+ }
+ }
+ macvlan, err := NewMacVLANPlugin(parentNetworkDevice, options.Gateway, &options.Range, &options.Subnet, mtu)
+ if err != nil {
+ return "", err
+ }
plugins = append(plugins, macvlan)
ncList["plugins"] = plugins
b, err := json.MarshalIndent(ncList, "", " ")
diff --git a/libpod/network/netconflist.go b/libpod/network/netconflist.go
index ca6a4a70b..9be98e78f 100644
--- a/libpod/network/netconflist.go
+++ b/libpod/network/netconflist.go
@@ -172,19 +172,31 @@ func HasDNSNamePlugin(paths []string) bool {
}
// NewMacVLANPlugin creates a macvlanconfig with a given device name
-func NewMacVLANPlugin(device string) MacVLANConfig {
+func NewMacVLANPlugin(device string, gateway net.IP, ipRange *net.IPNet, subnet *net.IPNet, mtu int) (MacVLANConfig, error) {
i := IPAMDHCP{DHCP: "dhcp"}
+ if gateway != nil || ipRange != nil || subnet != nil {
+ ipam, err := NewIPAMLocalHostRange(subnet, ipRange, gateway)
+ if err != nil {
+ return MacVLANConfig{}, err
+ }
+ ranges := make([][]IPAMLocalHostRangeConf, 0)
+ ranges = append(ranges, ipam)
+ i.Ranges = ranges
+ }
m := MacVLANConfig{
PluginType: "macvlan",
IPAM: i,
}
+ if mtu > 0 {
+ m.MTU = mtu
+ }
// CNI is supposed to use the default route if a
// parent device is not provided
if len(device) > 0 {
m.Master = device
}
- return m
+ return m, nil
}
// IfPassesFilter filters NetworkListReport and returns true if the filter match the given config
diff --git a/libpod/networking_linux.go b/libpod/networking_linux.go
index 737dbf935..01e4102d1 100644
--- a/libpod/networking_linux.go
+++ b/libpod/networking_linux.go
@@ -15,6 +15,7 @@ import (
"path/filepath"
"regexp"
"sort"
+ "strconv"
"strings"
"syscall"
"time"
@@ -42,6 +43,9 @@ const (
// slirp4netnsDNS is the IP for the built-in DNS server in the slirp network
slirp4netnsDNS = "10.0.2.3"
+
+ // slirp4netnsMTU the default MTU override
+ slirp4netnsMTU = 65520
)
// Get an OCICNI network config
@@ -282,6 +286,7 @@ func (r *Runtime) setupSlirp4netns(ctr *Container) error {
enableIPv6 := false
outboundAddr := ""
outboundAddr6 := ""
+ mtu := slirp4netnsMTU
if ctr.config.NetworkOptions != nil {
slirpOptions = append(slirpOptions, ctr.config.NetworkOptions["slirp4netns"]...)
@@ -345,6 +350,11 @@ func (r *Runtime) setupSlirp4netns(ctr *Container) error {
}
}
outboundAddr6 = value
+ case "mtu":
+ mtu, err = strconv.Atoi(value)
+ if mtu < 68 || err != nil {
+ return errors.Errorf("invalid mtu %q", value)
+ }
default:
return errors.Errorf("unknown option for slirp4netns: %q", o)
}
@@ -358,8 +368,8 @@ func (r *Runtime) setupSlirp4netns(ctr *Container) error {
if disableHostLoopback && slirpFeatures.HasDisableHostLoopback {
cmdArgs = append(cmdArgs, "--disable-host-loopback")
}
- if slirpFeatures.HasMTU {
- cmdArgs = append(cmdArgs, "--mtu", "65520")
+ if mtu > -1 && slirpFeatures.HasMTU {
+ cmdArgs = append(cmdArgs, fmt.Sprintf("--mtu=%d", mtu))
}
if !noPivotRoot && slirpFeatures.HasEnableSandbox {
cmdArgs = append(cmdArgs, "--enable-sandbox")
diff --git a/libpod/options.go b/libpod/options.go
index c7bac7e1f..20f62ee37 100644
--- a/libpod/options.go
+++ b/libpod/options.go
@@ -2190,13 +2190,37 @@ func WithPodNetworks(networks []string) PodCreateOption {
}
}
+// WithPodNoNetwork tells the pod to disable external networking.
+func WithPodNoNetwork() PodCreateOption {
+ return func(pod *Pod) error {
+ if pod.valid {
+ return define.ErrPodFinalized
+ }
+
+ if !pod.config.InfraContainer.HasInfraContainer {
+ return errors.Wrapf(define.ErrInvalidArg, "cannot disable pod networking as no infra container is being created")
+ }
+
+ if len(pod.config.InfraContainer.PortBindings) > 0 ||
+ pod.config.InfraContainer.StaticIP != nil ||
+ pod.config.InfraContainer.StaticMAC != nil ||
+ len(pod.config.InfraContainer.Networks) > 0 ||
+ pod.config.InfraContainer.HostNetwork {
+ return errors.Wrapf(define.ErrInvalidArg, "cannot disable pod network if network-related configuration is specified")
+ }
+
+ pod.config.InfraContainer.NoNetwork = true
+
+ return nil
+ }
+}
+
// WithPodHostNetwork tells the pod to use the host's network namespace.
func WithPodHostNetwork() PodCreateOption {
return func(pod *Pod) error {
if pod.valid {
return define.ErrPodFinalized
}
-
if !pod.config.InfraContainer.HasInfraContainer {
return errors.Wrapf(define.ErrInvalidArg, "cannot configure pod host networking as no infra container is being created")
}
@@ -2204,7 +2228,8 @@ func WithPodHostNetwork() PodCreateOption {
if len(pod.config.InfraContainer.PortBindings) > 0 ||
pod.config.InfraContainer.StaticIP != nil ||
pod.config.InfraContainer.StaticMAC != nil ||
- len(pod.config.InfraContainer.Networks) > 0 {
+ len(pod.config.InfraContainer.Networks) > 0 ||
+ pod.config.InfraContainer.NoNetwork {
return errors.Wrapf(define.ErrInvalidArg, "cannot set host network if network-related configuration is specified")
}
diff --git a/libpod/pod.go b/libpod/pod.go
index c8f62ca18..784c2cf5e 100644
--- a/libpod/pod.go
+++ b/libpod/pod.go
@@ -93,6 +93,7 @@ type podState struct {
type InfraContainerConfig struct {
ConmonPidFile string `json:"conmonPidFile"`
HasInfraContainer bool `json:"makeInfraContainer"`
+ NoNetwork bool `json:"noNetwork,omitempty"`
HostNetwork bool `json:"infraHostNetwork,omitempty"`
PortBindings []ocicni.PortMapping `json:"infraPortBindings"`
StaticIP net.IP `json:"staticIP,omitempty"`
diff --git a/libpod/runtime_pod_infra_linux.go b/libpod/runtime_pod_infra_linux.go
index dd957527d..564851f4e 100644
--- a/libpod/runtime_pod_infra_linux.go
+++ b/libpod/runtime_pod_infra_linux.go
@@ -94,8 +94,16 @@ func (r *Runtime) makeInfraContainer(ctx context.Context, p *Pod, imgName, rawIm
}
}
- // Since user namespace sharing is not implemented, we only need to check if it's rootless
- if !p.config.InfraContainer.HostNetwork {
+ switch {
+ case p.config.InfraContainer.HostNetwork:
+ if err := g.RemoveLinuxNamespace(string(spec.NetworkNamespace)); err != nil {
+ return nil, errors.Wrapf(err, "error removing network namespace from pod %s infra container", p.ID())
+ }
+ case p.config.InfraContainer.NoNetwork:
+ // Do nothing - we have a network namespace by default,
+ // but should not configure slirp.
+ default:
+ // Since user namespace sharing is not implemented, we only need to check if it's rootless
netmode := "bridge"
if isRootless || p.config.InfraContainer.Slirp4netns {
netmode = "slirp4netns"
@@ -106,8 +114,6 @@ func (r *Runtime) makeInfraContainer(ctx context.Context, p *Pod, imgName, rawIm
// PostConfigureNetNS should not be set since user namespace sharing is not implemented
// and rootless networking no longer supports post configuration setup
options = append(options, WithNetNS(p.config.InfraContainer.PortBindings, false, netmode, p.config.InfraContainer.Networks))
- } else if err := g.RemoveLinuxNamespace(string(spec.NetworkNamespace)); err != nil {
- return nil, errors.Wrapf(err, "error removing network namespace from pod %s infra container", p.ID())
}
// For each option in InfraContainerConfig - if set, pass into
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-01-17 17:11:16 +0000