Add flag to overwrite network backend from config

To make testing easier we can overwrite the network backend with the
global `--network-backend` option.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

2 files changed, 12 insertions, 0 deletions

diff --git a/cmd/podman/common/completion.go b/cmd/podman/common/completion.go
index ea453a331..4cb29383a 100644
--- a/cmd/podman/common/completion.go
+++ b/cmd/podman/common/completion.go
@@ -1163,6 +1163,13 @@ func AutocompleteEventBackend(cmd *cobra.Command, args []string, toComplete stri
 	return types, cobra.ShellCompDirectiveNoFileComp
 }
 
+// AutocompleteNetworkBackend - Autocomplete network backend options.
+// -> "cni", "netavark"
+func AutocompleteNetworkBackend(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+	types := []string{"cni", "netavark"}
+	return types, cobra.ShellCompDirectiveNoFileComp
+}
+
 // AutocompleteLogLevel - Autocomplete log level options.
 // -> "trace", "debug", "info", "warn", "error", "fatal", "panic"
 func AutocompleteLogLevel(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
diff --git a/cmd/podman/root.go b/cmd/podman/root.go
index 6da34050e..418a70e1e 100644
--- a/cmd/podman/root.go
+++ b/cmd/podman/root.go
@@ -357,6 +357,11 @@ func rootFlags(cmd *cobra.Command, opts *entities.PodmanConfig) {
 		pFlags.StringVar(&cfg.Engine.Namespace, namespaceFlagName, cfg.Engine.Namespace, "Set the libpod namespace, used to create separate views of the containers and pods on the system")
 		_ = cmd.RegisterFlagCompletionFunc(namespaceFlagName, completion.AutocompleteNone)
 
+		networkBackendFlagName := "network-backend"
+		pFlags.StringVar(&cfg.Network.NetworkBackend, networkBackendFlagName, cfg.Network.NetworkBackend, `Network backend to use ("cni"|"netavark")`)
+		_ = cmd.RegisterFlagCompletionFunc(networkBackendFlagName, common.AutocompleteNetworkBackend)
+		pFlags.MarkHidden(networkBackendFlagName)
+
 		rootFlagName := "root"
 		pFlags.StringVar(&cfg.Engine.StaticDir, rootFlagName, "", "Path to the root directory in which data, including images, is stored")
 		_ = cmd.RegisterFlagCompletionFunc(rootFlagName, completion.AutocompleteDefault)