Improve binapi generator

- simplified Size/Marshal/Unmarshal methods
- replace struc in unions with custom marshal/unmarshal
- fix imports in generated files
- fix mock adapter
- generate rpc service using low-level stream API (dumps generate control ping or stream msg..)
- move examples/binapi to binapi and generate all API for latest release
- add binapigen.Plugin for developing custom generator plugins
- optionally generate HTTP handlers (REST API) for RPC services
- add govpp program for browsing VPP API

Change-Id: I092e9ed2b0c17972b3476463c3d4b14dd76ed42b
Signed-off-by: Ondrej Fabry <ofabry@cisco.com>

3 files changed, 622 insertions, 0 deletions

diff --git a/binapi/vhost_user/vhost_user.ba.go b/binapi/vhost_user/vhost_user.ba.go
new file mode 100644
index 0000000..ea3d32b
--- /dev/null
+++ b/binapi/vhost_user/vhost_user.ba.go
@@ -0,0 +1,446 @@
+// Code generated by GoVPP's binapi-generator. DO NOT EDIT.
+// versions:
+//  binapi-generator: v0.4.0-dev
+//  VPP:              20.05-release
+// source: /usr/share/vpp/api/core/vhost_user.api.json
+
+// Package vhost_user contains generated bindings for API file vhost_user.api.
+//
+// Contents:
+//   8 messages
+//
+package vhost_user
+
+import (
+	api "git.fd.io/govpp.git/api"
+	ethernet_types "git.fd.io/govpp.git/binapi/ethernet_types"
+	interface_types "git.fd.io/govpp.git/binapi/interface_types"
+	virtio_types "git.fd.io/govpp.git/binapi/virtio_types"
+	codec "git.fd.io/govpp.git/codec"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the GoVPP api package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// GoVPP api package needs to be updated.
+const _ = api.GoVppAPIPackageIsVersion2
+
+const (
+	APIFile    = "vhost_user"
+	APIVersion = "4.0.1"
+	VersionCrc = 0x3df14dfe
+)
+
+// CreateVhostUserIf defines message 'create_vhost_user_if'.
+type CreateVhostUserIf struct {
+	IsServer            bool                      `binapi:"bool,name=is_server" json:"is_server,omitempty"`
+	SockFilename        string                    `binapi:"string[256],name=sock_filename" json:"sock_filename,omitempty"`
+	Renumber            bool                      `binapi:"bool,name=renumber" json:"renumber,omitempty"`
+	DisableMrgRxbuf     bool                      `binapi:"bool,name=disable_mrg_rxbuf" json:"disable_mrg_rxbuf,omitempty"`
+	DisableIndirectDesc bool                      `binapi:"bool,name=disable_indirect_desc" json:"disable_indirect_desc,omitempty"`
+	EnableGso           bool                      `binapi:"bool,name=enable_gso" json:"enable_gso,omitempty"`
+	EnablePacked        bool                      `binapi:"bool,name=enable_packed" json:"enable_packed,omitempty"`
+	CustomDevInstance   uint32                    `binapi:"u32,name=custom_dev_instance" json:"custom_dev_instance,omitempty"`
+	UseCustomMac        bool                      `binapi:"bool,name=use_custom_mac" json:"use_custom_mac,omitempty"`
+	MacAddress          ethernet_types.MacAddress `binapi:"mac_address,name=mac_address" json:"mac_address,omitempty"`
+	Tag                 string                    `binapi:"string[64],name=tag" json:"tag,omitempty"`
+}
+
+func (m *CreateVhostUserIf) Reset()               { *m = CreateVhostUserIf{} }
+func (*CreateVhostUserIf) GetMessageName() string { return "create_vhost_user_if" }
+func (*CreateVhostUserIf) GetCrcString() string   { return "c785c6fc" }
+func (*CreateVhostUserIf) GetMessageType() api.MessageType {
+	return api.RequestMessage
+}
+
+func (m *CreateVhostUserIf) Size() int {
+	if m == nil {
+		return 0
+	}
+	var size int
+	size += 1     // m.IsServer
+	size += 256   // m.SockFilename
+	size += 1     // m.Renumber
+	size += 1     // m.DisableMrgRxbuf
+	size += 1     // m.DisableIndirectDesc
+	size += 1     // m.EnableGso
+	size += 1     // m.EnablePacked
+	size += 4     // m.CustomDevInstance
+	size += 1     // m.UseCustomMac
+	size += 1 * 6 // m.MacAddress
+	size += 64    // m.Tag
+	return size
+}
+func (m *CreateVhostUserIf) Marshal(b []byte) ([]byte, error) {
+	var buf *codec.Buffer
+	if b == nil {
+		buf = codec.NewBuffer(make([]byte, m.Size()))
+	} else {
+		buf = codec.NewBuffer(b)
+	}
+	buf.EncodeBool(m.IsServer)
+	buf.EncodeString(m.SockFilename, 256)
+	buf.EncodeBool(m.Renumber)
+	buf.EncodeBool(m.DisableMrgRxbuf)
+	buf.EncodeBool(m.DisableIndirectDesc)
+	buf.EncodeBool(m.EnableGso)
+	buf.EncodeBool(m.EnablePacked)
+	buf.EncodeUint32(uint32(m.CustomDevInstance))
+	buf.EncodeBool(m.UseCustomMac)
+	buf.EncodeBytes(m.MacAddress[:], 6)
+	buf.EncodeString(m.Tag, 64)
+	return buf.Bytes(), nil
+}
+func (m *CreateVhostUserIf) Unmarshal(b []byte) error {
+	buf := codec.NewBuffer(b)
+	m.IsServer = buf.DecodeBool()
+	m.SockFilename = buf.DecodeString(256)
+	m.Renumber = buf.DecodeBool()
+	m.DisableMrgRxbuf = buf.DecodeBool()
+	m.DisableIndirectDesc = buf.DecodeBool()
+	m.EnableGso = buf.DecodeBool()
+	m.EnablePacked = buf.DecodeBool()
+	m.CustomDevInstance = buf.DecodeUint32()
+	m.UseCustomMac = buf.DecodeBool()
+	copy(m.MacAddress[:], buf.DecodeBytes(6))
+	m.Tag = buf.DecodeString(64)
+	return nil
+}
+
+// CreateVhostUserIfReply defines message 'create_vhost_user_if_reply'.
+type CreateVhostUserIfReply struct {
+	Retval    int32                          `binapi:"i32,name=retval" json:"retval,omitempty"`
+	SwIfIndex interface_types.InterfaceIndex `binapi:"interface_index,name=sw_if_index" json:"sw_if_index,omitempty"`
+}
+
+func (m *CreateVhostUserIfReply) Reset()               { *m = CreateVhostUserIfReply{} }
+func (*CreateVhostUserIfReply) GetMessageName() string { return "create_vhost_user_if_reply" }
+func (*CreateVhostUserIfReply) GetCrcString() string   { return "5383d31f" }
+func (*CreateVhostUserIfReply) GetMessageType() api.MessageType {
+	return api.ReplyMessage
+}
+
+func (m *CreateVhostUserIfReply) Size() int {
+	if m == nil {
+		return 0
+	}
+	var size int
+	size += 4 // m.Retval
+	size += 4 // m.SwIfIndex
+	return size
+}
+func (m *CreateVhostUserIfReply) Marshal(b []byte) ([]byte, error) {
+	var buf *codec.Buffer
+	if b == nil {
+		buf = codec.NewBuffer(make([]byte, m.Size()))
+	} else {
+		buf = codec.NewBuffer(b)
+	}
+	buf.EncodeUint32(uint32(m.Retval))
+	buf.EncodeUint32(uint32(m.SwIfIndex))
+	return buf.Bytes(), nil
+}
+func (m *CreateVhostUserIfReply) Unmarshal(b []byte) error {
+	buf := codec.NewBuffer(b)
+	m.Retval = int32(buf.DecodeUint32())
+	m.SwIfIndex = interface_types.InterfaceIndex(buf.DecodeUint32())
+	return nil
+}
+
+// DeleteVhostUserIf defines message 'delete_vhost_user_if'.
+type DeleteVhostUserIf struct {
+	SwIfIndex interface_types.InterfaceIndex `binapi:"interface_index,name=sw_if_index" json:"sw_if_index,omitempty"`
+}
+
+func (m *DeleteVhostUserIf) Reset()               { *m = DeleteVhostUserIf{} }
+func (*DeleteVhostUserIf) GetMessageName() string { return "delete_vhost_user_if" }
+func (*DeleteVhostUserIf) GetCrcString() string   { return "f9e6675e" }
+func (*DeleteVhostUserIf) GetMessageType() api.MessageType {
+	return api.RequestMessage
+}
+
+func (m *DeleteVhostUserIf) Size() int {
+	if m == nil {
+		return 0
+	}
+	var size int
+	size += 4 // m.SwIfIndex
+	return size
+}
+func (m *DeleteVhostUserIf) Marshal(b []byte) ([]byte, error) {
+	var buf *codec.Buffer
+	if b == nil {
+		buf = codec.NewBuffer(make([]byte, m.Size()))
+	} else {
+		buf = codec.NewBuffer(b)
+	}
+	buf.EncodeUint32(uint32(m.SwIfIndex))
+	return buf.Bytes(), nil
+}
+func (m *DeleteVhostUserIf) Unmarshal(b []byte) error {
+	buf := codec.NewBuffer(b)
+	m.SwIfIndex = interface_types.InterfaceIndex(buf.DecodeUint32())
+	return nil
+}
+
+// DeleteVhostUserIfReply defines message 'delete_vhost_user_if_reply'.
+type DeleteVhostUserIfReply struct {
+	Retval int32 `binapi:"i32,name=retval" json:"retval,omitempty"`
+}
+
+func (m *DeleteVhostUserIfReply) Reset()               { *m = DeleteVhostUserIfReply{} }
+func (*DeleteVhostUserIfReply) GetMessageName() string { return "delete_vhost_user_if_reply" }
+func (*DeleteVhostUserIfReply) GetCrcString() string   { return "e8d4e804" }
+func (*DeleteVhostUserIfReply) GetMessageType() api.MessageType {
+	return api.ReplyMessage
+}
+
+func (m *DeleteVhostUserIfReply) Size() int {
+	if m == nil {
+		return 0
+	}
+	var size int
+	size += 4 // m.Retval
+	return size
+}
+func (m *DeleteVhostUserIfReply) Marshal(b []byte) ([]byte, error) {
+	var buf *codec.Buffer
+	if b == nil {
+		buf = codec.NewBuffer(make([]byte, m.Size()))
+	} else {
+		buf = codec.NewBuffer(b)
+	}
+	buf.EncodeUint32(uint32(m.Retval))
+	return buf.Bytes(), nil
+}
+func (m *DeleteVhostUserIfReply) Unmarshal(b []byte) error {
+	buf := codec.NewBuffer(b)
+	m.Retval = int32(buf.DecodeUint32())
+	return nil
+}
+
+// ModifyVhostUserIf defines message 'modify_vhost_user_if'.
+type ModifyVhostUserIf struct {
+	SwIfIndex         interface_types.InterfaceIndex `binapi:"interface_index,name=sw_if_index" json:"sw_if_index,omitempty"`
+	IsServer          bool                           `binapi:"bool,name=is_server" json:"is_server,omitempty"`
+	SockFilename      string                         `binapi:"string[256],name=sock_filename" json:"sock_filename,omitempty"`
+	Renumber          bool                           `binapi:"bool,name=renumber" json:"renumber,omitempty"`
+	EnableGso         bool                           `binapi:"bool,name=enable_gso" json:"enable_gso,omitempty"`
+	EnablePacked      bool                           `binapi:"bool,name=enable_packed" json:"enable_packed,omitempty"`
+	CustomDevInstance uint32                         `binapi:"u32,name=custom_dev_instance" json:"custom_dev_instance,omitempty"`
+}
+
+func (m *ModifyVhostUserIf) Reset()               { *m = ModifyVhostUserIf{} }
+func (*ModifyVhostUserIf) GetMessageName() string { return "modify_vhost_user_if" }
+func (*ModifyVhostUserIf) GetCrcString() string   { return "0e71d40b" }
+func (*ModifyVhostUserIf) GetMessageType() api.MessageType {
+	return api.RequestMessage
+}
+
+func (m *ModifyVhostUserIf) Size() int {
+	if m == nil {
+		return 0
+	}
+	var size int
+	size += 4   // m.SwIfIndex
+	size += 1   // m.IsServer
+	size += 256 // m.SockFilename
+	size += 1   // m.Renumber
+	size += 1   // m.EnableGso
+	size += 1   // m.EnablePacked
+	size += 4   // m.CustomDevInstance
+	return size
+}
+func (m *ModifyVhostUserIf) Marshal(b []byte) ([]byte, error) {
+	var buf *codec.Buffer
+	if b == nil {
+		buf = codec.NewBuffer(make([]byte, m.Size()))
+	} else {
+		buf = codec.NewBuffer(b)
+	}
+	buf.EncodeUint32(uint32(m.SwIfIndex))
+	buf.EncodeBool(m.IsServer)
+	buf.EncodeString(m.SockFilename, 256)
+	buf.EncodeBool(m.Renumber)
+	buf.EncodeBool(m.EnableGso)
+	buf.EncodeBool(m.EnablePacked)
+	buf.EncodeUint32(uint32(m.CustomDevInstance))
+	return buf.Bytes(), nil
+}
+func (m *ModifyVhostUserIf) Unmarshal(b []byte) error {
+	buf := codec.NewBuffer(b)
+	m.SwIfIndex = interface_types.InterfaceIndex(buf.DecodeUint32())
+	m.IsServer = buf.DecodeBool()
+	m.SockFilename = buf.DecodeString(256)
+	m.Renumber = buf.DecodeBool()
+	m.EnableGso = buf.DecodeBool()
+	m.EnablePacked = buf.DecodeBool()
+	m.CustomDevInstance = buf.DecodeUint32()
+	return nil
+}
+
+// ModifyVhostUserIfReply defines message 'modify_vhost_user_if_reply'.
+type ModifyVhostUserIfReply struct {
+	Retval int32 `binapi:"i32,name=retval" json:"retval,omitempty"`
+}
+
+func (m *ModifyVhostUserIfReply) Reset()               { *m = ModifyVhostUserIfReply{} }
+func (*ModifyVhostUserIfReply) GetMessageName() string { return "modify_vhost_user_if_reply" }
+func (*ModifyVhostUserIfReply) GetCrcString() string   { return "e8d4e804" }
+func (*ModifyVhostUserIfReply) GetMessageType() api.MessageType {
+	return api.ReplyMessage
+}
+
+func (m *ModifyVhostUserIfReply) Size() int {
+	if m == nil {
+		return 0
+	}
+	var size int
+	size += 4 // m.Retval
+	return size
+}
+func (m *ModifyVhostUserIfReply) Marshal(b []byte) ([]byte, error) {
+	var buf *codec.Buffer
+	if b == nil {
+		buf = codec.NewBuffer(make([]byte, m.Size()))
+	} else {
+		buf = codec.NewBuffer(b)
+	}
+	buf.EncodeUint32(uint32(m.Retval))
+	return buf.Bytes(), nil
+}
+func (m *ModifyVhostUserIfReply) Unmarshal(b []byte) error {
+	buf := codec.NewBuffer(b)
+	m.Retval = int32(buf.DecodeUint32())
+	return nil
+}
+
+// SwInterfaceVhostUserDetails defines message 'sw_interface_vhost_user_details'.
+type SwInterfaceVhostUserDetails struct {
+	SwIfIndex       interface_types.InterfaceIndex        `binapi:"interface_index,name=sw_if_index" json:"sw_if_index,omitempty"`
+	InterfaceName   string                                `binapi:"string[64],name=interface_name" json:"interface_name,omitempty"`
+	VirtioNetHdrSz  uint32                                `binapi:"u32,name=virtio_net_hdr_sz" json:"virtio_net_hdr_sz,omitempty"`
+	FeaturesFirst32 virtio_types.VirtioNetFeaturesFirst32 `binapi:"virtio_net_features_first_32,name=features_first_32" json:"features_first_32,omitempty"`
+	FeaturesLast32  virtio_types.VirtioNetFeaturesLast32  `binapi:"virtio_net_features_last_32,name=features_last_32" json:"features_last_32,omitempty"`
+	IsServer        bool                                  `binapi:"bool,name=is_server" json:"is_server,omitempty"`
+	SockFilename    string                                `binapi:"string[256],name=sock_filename" json:"sock_filename,omitempty"`
+	NumRegions      uint32                                `binapi:"u32,name=num_regions" json:"num_regions,omitempty"`
+	SockErrno       int32                                 `binapi:"i32,name=sock_errno" json:"sock_errno,omitempty"`
+}
+
+func (m *SwInterfaceVhostUserDetails) Reset()               { *m = SwInterfaceVhostUserDetails{} }
+func (*SwInterfaceVhostUserDetails) GetMessageName() string { return "sw_interface_vhost_user_details" }
+func (*SwInterfaceVhostUserDetails) GetCrcString() string   { return "98530df1" }
+func (*SwInterfaceVhostUserDetails) GetMessageType() api.MessageType {
+	return api.ReplyMessage
+}
+
+func (m *SwInterfaceVhostUserDetails) Size() int {
+	if m == nil {
+		return 0
+	}
+	var size int
+	size += 4   // m.SwIfIndex
+	size += 64  // m.InterfaceName
+	size += 4   // m.VirtioNetHdrSz
+	size += 4   // m.FeaturesFirst32
+	size += 4   // m.FeaturesLast32
+	size += 1   // m.IsServer
+	size += 256 // m.SockFilename
+	size += 4   // m.NumRegions
+	size += 4   // m.SockErrno
+	return size
+}
+func (m *SwInterfaceVhostUserDetails) Marshal(b []byte) ([]byte, error) {
+	var buf *codec.Buffer
+	if b == nil {
+		buf = codec.NewBuffer(make([]byte, m.Size()))
+	} else {
+		buf = codec.NewBuffer(b)
+	}
+	buf.EncodeUint32(uint32(m.SwIfIndex))
+	buf.EncodeString(m.InterfaceName, 64)
+	buf.EncodeUint32(uint32(m.VirtioNetHdrSz))
+	buf.EncodeUint32(uint32(m.FeaturesFirst32))
+	buf.EncodeUint32(uint32(m.FeaturesLast32))
+	buf.EncodeBool(m.IsServer)
+	buf.EncodeString(m.SockFilename, 256)
+	buf.EncodeUint32(uint32(m.NumRegions))
+	buf.EncodeUint32(uint32(m.SockErrno))
+	return buf.Bytes(), nil
+}
+func (m *SwInterfaceVhostUserDetails) Unmarshal(b []byte) error {
+	buf := codec.NewBuffer(b)
+	m.SwIfIndex = interface_types.InterfaceIndex(buf.DecodeUint32())
+	m.InterfaceName = buf.DecodeString(64)
+	m.VirtioNetHdrSz = buf.DecodeUint32()
+	m.FeaturesFirst32 = virtio_types.VirtioNetFeaturesFirst32(buf.DecodeUint32())
+	m.FeaturesLast32 = virtio_types.VirtioNetFeaturesLast32(buf.DecodeUint32())
+	m.IsServer = buf.DecodeBool()
+	m.SockFilename = buf.DecodeString(256)
+	m.NumRegions = buf.DecodeUint32()
+	m.SockErrno = int32(buf.DecodeUint32())
+	return nil
+}
+
+// SwInterfaceVhostUserDump defines message 'sw_interface_vhost_user_dump'.
+type SwInterfaceVhostUserDump struct {
+	SwIfIndex interface_types.InterfaceIndex `binapi:"interface_index,name=sw_if_index,default=%!s(float64=4.294967295e+09)" json:"sw_if_index,omitempty"`
+}
+
+func (m *SwInterfaceVhostUserDump) Reset()               { *m = SwInterfaceVhostUserDump{} }
+func (*SwInterfaceVhostUserDump) GetMessageName() string { return "sw_interface_vhost_user_dump" }
+func (*SwInterfaceVhostUserDump) GetCrcString() string   { return "f9e6675e" }
+func (*SwInterfaceVhostUserDump) GetMessageType() api.MessageType {
+	return api.RequestMessage
+}
+
+func (m *SwInterfaceVhostUserDump) Size() int {
+	if m == nil {
+		return 0
+	}
+	var size int
+	size += 4 // m.SwIfIndex
+	return size
+}
+func (m *SwInterfaceVhostUserDump) Marshal(b []byte) ([]byte, error) {
+	var buf *codec.Buffer
+	if b == nil {
+		buf = codec.NewBuffer(make([]byte, m.Size()))
+	} else {
+		buf = codec.NewBuffer(b)
+	}
+	buf.EncodeUint32(uint32(m.SwIfIndex))
+	return buf.Bytes(), nil
+}
+func (m *SwInterfaceVhostUserDump) Unmarshal(b []byte) error {
+	buf := codec.NewBuffer(b)
+	m.SwIfIndex = interface_types.InterfaceIndex(buf.DecodeUint32())
+	return nil
+}
+
+func init() { file_vhost_user_binapi_init() }
+func file_vhost_user_binapi_init() {
+	api.RegisterMessage((*CreateVhostUserIf)(nil), "create_vhost_user_if_c785c6fc")
+	api.RegisterMessage((*CreateVhostUserIfReply)(nil), "create_vhost_user_if_reply_5383d31f")
+	api.RegisterMessage((*DeleteVhostUserIf)(nil), "delete_vhost_user_if_f9e6675e")
+	api.RegisterMessage((*DeleteVhostUserIfReply)(nil), "delete_vhost_user_if_reply_e8d4e804")
+	api.RegisterMessage((*ModifyVhostUserIf)(nil), "modify_vhost_user_if_0e71d40b")
+	api.RegisterMessage((*ModifyVhostUserIfReply)(nil), "modify_vhost_user_if_reply_e8d4e804")
+	api.RegisterMessage((*SwInterfaceVhostUserDetails)(nil), "sw_interface_vhost_user_details_98530df1")
+	api.RegisterMessage((*SwInterfaceVhostUserDump)(nil), "sw_interface_vhost_user_dump_f9e6675e")
+}
+
+// Messages returns list of all messages in this module.
+func AllMessages() []api.Message {
+	return []api.Message{
+		(*CreateVhostUserIf)(nil),
+		(*CreateVhostUserIfReply)(nil),
+		(*DeleteVhostUserIf)(nil),
+		(*DeleteVhostUserIfReply)(nil),
+		(*ModifyVhostUserIf)(nil),
+		(*ModifyVhostUserIfReply)(nil),
+		(*SwInterfaceVhostUserDetails)(nil),
+		(*SwInterfaceVhostUserDump)(nil),
+	}
+}
diff --git a/binapi/vhost_user/vhost_user_rest.ba.go b/binapi/vhost_user/vhost_user_rest.ba.go
new file mode 100644
index 0000000..c2f687b
--- /dev/null
+++ b/binapi/vhost_user/vhost_user_rest.ba.go
@@ -0,0 +1,83 @@
+// Code generated by GoVPP's binapi-generator. DO NOT EDIT.
+
+package vhost_user
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+)
+
+func RESTHandler(rpc RPCService) http.Handler {
+	mux := http.NewServeMux()
+	mux.HandleFunc("/create_vhost_user_if", func(w http.ResponseWriter, req *http.Request) {
+		var request = new(CreateVhostUserIf)
+		b, err := ioutil.ReadAll(req.Body)
+		if err != nil {
+			http.Error(w, "read body failed", http.StatusBadRequest)
+			return
+		}
+		if err := json.Unmarshal(b, request); err != nil {
+			http.Error(w, "unmarshal data failed", http.StatusBadRequest)
+			return
+		}
+		reply, err := rpc.CreateVhostUserIf(req.Context(), request)
+		if err != nil {
+			http.Error(w, "request failed: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		rep, err := json.MarshalIndent(reply, "", "  ")
+		if err != nil {
+			http.Error(w, "marshal failed: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		w.Write(rep)
+	})
+	mux.HandleFunc("/delete_vhost_user_if", func(w http.ResponseWriter, req *http.Request) {
+		var request = new(DeleteVhostUserIf)
+		b, err := ioutil.ReadAll(req.Body)
+		if err != nil {
+			http.Error(w, "read body failed", http.StatusBadRequest)
+			return
+		}
+		if err := json.Unmarshal(b, request); err != nil {
+			http.Error(w, "unmarshal data failed", http.StatusBadRequest)
+			return
+		}
+		reply, err := rpc.DeleteVhostUserIf(req.Context(), request)
+		if err != nil {
+			http.Error(w, "request failed: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		rep, err := json.MarshalIndent(reply, "", "  ")
+		if err != nil {
+			http.Error(w, "marshal failed: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		w.Write(rep)
+	})
+	mux.HandleFunc("/modify_vhost_user_if", func(w http.ResponseWriter, req *http.Request) {
+		var request = new(ModifyVhostUserIf)
+		b, err := ioutil.ReadAll(req.Body)
+		if err != nil {
+			http.Error(w, "read body failed", http.StatusBadRequest)
+			return
+		}
+		if err := json.Unmarshal(b, request); err != nil {
+			http.Error(w, "unmarshal data failed", http.StatusBadRequest)
+			return
+		}
+		reply, err := rpc.ModifyVhostUserIf(req.Context(), request)
+		if err != nil {
+			http.Error(w, "request failed: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		rep, err := json.MarshalIndent(reply, "", "  ")
+		if err != nil {
+			http.Error(w, "marshal failed: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		w.Write(rep)
+	})
+	return http.HandlerFunc(mux.ServeHTTP)
+}
diff --git a/binapi/vhost_user/vhost_user_rpc.ba.go b/binapi/vhost_user/vhost_user_rpc.ba.go
new file mode 100644
index 0000000..091ed53
--- /dev/null
+++ b/binapi/vhost_user/vhost_user_rpc.ba.go
@@ -0,0 +1,93 @@
+// Code generated by GoVPP's binapi-generator. DO NOT EDIT.
+
+package vhost_user
+
+import (
+	"context"
+	"fmt"
+	api "git.fd.io/govpp.git/api"
+	vpe "git.fd.io/govpp.git/binapi/vpe"
+	"io"
+)
+
+// RPCService defines RPC service  vhost_user.
+type RPCService interface {
+	CreateVhostUserIf(ctx context.Context, in *CreateVhostUserIf) (*CreateVhostUserIfReply, error)
+	DeleteVhostUserIf(ctx context.Context, in *DeleteVhostUserIf) (*DeleteVhostUserIfReply, error)
+	ModifyVhostUserIf(ctx context.Context, in *ModifyVhostUserIf) (*ModifyVhostUserIfReply, error)
+	SwInterfaceVhostUserDump(ctx context.Context, in *SwInterfaceVhostUserDump) (RPCService_SwInterfaceVhostUserDumpClient, error)
+}
+
+type serviceClient struct {
+	conn api.Connection
+}
+
+func NewServiceClient(conn api.Connection) RPCService {
+	return &serviceClient{conn}
+}
+
+func (c *serviceClient) CreateVhostUserIf(ctx context.Context, in *CreateVhostUserIf) (*CreateVhostUserIfReply, error) {
+	out := new(CreateVhostUserIfReply)
+	err := c.conn.Invoke(ctx, in, out)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *serviceClient) DeleteVhostUserIf(ctx context.Context, in *DeleteVhostUserIf) (*DeleteVhostUserIfReply, error) {
+	out := new(DeleteVhostUserIfReply)
+	err := c.conn.Invoke(ctx, in, out)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *serviceClient) ModifyVhostUserIf(ctx context.Context, in *ModifyVhostUserIf) (*ModifyVhostUserIfReply, error) {
+	out := new(ModifyVhostUserIfReply)
+	err := c.conn.Invoke(ctx, in, out)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *serviceClient) SwInterfaceVhostUserDump(ctx context.Context, in *SwInterfaceVhostUserDump) (RPCService_SwInterfaceVhostUserDumpClient, error) {
+	stream, err := c.conn.NewStream(ctx)
+	if err != nil {
+		return nil, err
+	}
+	x := &serviceClient_SwInterfaceVhostUserDumpClient{stream}
+	if err := x.Stream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err = x.Stream.SendMsg(&vpe.ControlPing{}); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type RPCService_SwInterfaceVhostUserDumpClient interface {
+	Recv() (*SwInterfaceVhostUserDetails, error)
+	api.Stream
+}
+
+type serviceClient_SwInterfaceVhostUserDumpClient struct {
+	api.Stream
+}
+
+func (c *serviceClient_SwInterfaceVhostUserDumpClient) Recv() (*SwInterfaceVhostUserDetails, error) {
+	msg, err := c.Stream.RecvMsg()
+	if err != nil {
+		return nil, err
+	}
+	switch m := msg.(type) {
+	case *SwInterfaceVhostUserDetails:
+		return m, nil
+	case *vpe.ControlPingReply:
+		return nil, io.EOF
+	default:
+		return nil, fmt.Errorf("unexpected message: %T %v", m, m)
+	}
+}