X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=adapter%2Fvpp_api.go;h=b32f97580b85f8fdbb2c3894f634d0d9891d9bdf;hb=d0b973030fe07dc7875da72f5ebe42d8bd9544b1;hp=71bf7c2bdb76d08cacde583b213361a9cbbe7612;hpb=d06548e4f4492c181f04a5fc9bf994764278e68b;p=govpp.git

diff --git a/adapter/vpp_api.go b/adapter/vpp_api.go
index 71bf7c2..b32f975 100644
--- a/adapter/vpp_api.go
+++ b/adapter/vpp_api.go
@@ -16,6 +16,7 @@ package adapter
 
 import (
 	"errors"
+	"fmt"
 )
 
 const (
@@ -52,3 +53,14 @@ type VppAPI interface {
 	// WaitReady waits until adapter is ready.
 	WaitReady() error
 }
+
+// UnknownMsgError is the error type usually returned by GetMsgID
+// method of VppAPI. It describes the name and CRC for the unknown message.
+type UnknownMsgError struct {
+	MsgName string
+	MsgCrc  string
+}
+
+func (u *UnknownMsgError) Error() string {
+	return fmt.Sprintf("unknown message: %s_%s", u.MsgName, u.MsgCrc)
+}