libpod: pass down network options

do not pass network specific options through the network namespace.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

3 files changed, 33 insertions, 2 deletions

diff --git a/libpod/container.go b/libpod/container.go
index f7abfb005..1ca38ae7e 100644
--- a/libpod/container.go
+++ b/libpod/container.go
@@ -341,6 +341,8 @@ type ContainerConfig struct {
 	Networks []string `json:"networks,omitempty"`
 	// Network mode specified for the default network.
 	NetMode namespaces.NetworkMode `json:"networkMode,omitempty"`
+	// NetworkOptions are additional options for each network
+	NetworkOptions map[string][]string `json:"network_options,omitempty"`
 
 	// Image Config
 
diff --git a/libpod/networking_linux.go b/libpod/networking_linux.go
index db8aa219b..9be8e0b14 100644
--- a/libpod/networking_linux.go
+++ b/libpod/networking_linux.go
@@ -223,6 +223,22 @@ func (r *Runtime) setupRootlessNetNS(ctr *Container) error {
 	havePortMapping := len(ctr.Config().PortMappings) > 0
 	logPath := filepath.Join(ctr.runtime.config.Engine.TmpDir, fmt.Sprintf("slirp4netns-%s.log", ctr.config.ID))
 
+	isSlirpHostForward := false
+	if ctr.config.NetworkOptions != nil {
+		slirpOptions := ctr.config.NetworkOptions["slirp4netns"]
+		for _, o := range slirpOptions {
+			switch o {
+			case "port_handler=slirp4netns":
+				isSlirpHostForward = true
+			case "port_handler=rootlesskit":
+				isSlirpHostForward = false
+			default:
+				return errors.Errorf("unknown option for slirp4netns: %q", o)
+
+			}
+		}
+	}
+
 	cmdArgs := []string{}
 	slirpFeatures, err := checkSlirpFlags(path)
 	if err != nil {
@@ -242,7 +258,7 @@ func (r *Runtime) setupRootlessNetNS(ctr *Container) error {
 	}
 
 	var apiSocket string
-	if havePortMapping && ctr.config.NetMode.IsPortForwardViaSlirpHostFwd() {
+	if havePortMapping && isSlirpHostForward {
 		apiSocket = filepath.Join(ctr.runtime.config.Engine.TmpDir, fmt.Sprintf("%s.net", ctr.config.ID))
 		cmdArgs = append(cmdArgs, "--api-socket", apiSocket)
 	}
@@ -310,7 +326,7 @@ func (r *Runtime) setupRootlessNetNS(ctr *Container) error {
 	}
 
 	if havePortMapping {
-		if ctr.config.NetMode.IsPortForwardViaSlirpHostFwd() {
+		if isSlirpHostForward {
 			return r.setupRootlessPortMappingViaSlirp(ctr, cmd, apiSocket)
 		} else {
 			return r.setupRootlessPortMappingViaRLK(ctr, netnsPath)
diff --git a/libpod/options.go b/libpod/options.go
index b3c11ebc1..32748a3c1 100644
--- a/libpod/options.go
+++ b/libpod/options.go
@@ -1003,6 +1003,19 @@ func WithStaticIP(ip net.IP) CtrCreateOption {
 	}
 }
 
+// WithNetworkOptions sets additional options for the networks.
+func WithNetworkOptions(options map[string][]string) CtrCreateOption {
+	return func(ctr *Container) error {
+		if ctr.valid {
+			return define.ErrCtrFinalized
+		}
+
+		ctr.config.NetworkOptions = options
+
+		return nil
+	}
+}
+
 // WithStaticMAC indicates that the container should request a static MAC from
 // the CNI plugins.
 // It cannot be set unless WithNetNS has already been passed.