Update generated binapi to v22.02 & makefile changes

This patch does some small updates to the Makefile.
* `make gen-binapi-from-code` is removed, and moves to
`gen-binapi-local`
* `make build` is patched to build cmd & examples
* `make binapi-generator` to build the api-generator
without other binaries, as they typically require its
output to build.
* `make gen-binapi-local` runs the locally built binapi-generator
to update the local bindings. It expects ${VPP_DIR} to be set and
to point to a local vpp repository checked out with the right version
* `make gen-binapi-internal` runs the locally built binapi-generator
to update the bindings in `internal/testbinapi/binapi2001`

Regarding VPP, notable changes when moving to v22.02 are :
- ControlPing moved from vpe to memclnt
- CliInband went from vpe to vlib

Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
Change-Id: Ie5cd2d5ded7ecaffd9abc3ca675df40be272b1fa

2 files changed, 22 insertions, 8 deletions

diff --git a/internal/testbinapi/binapi2001/memif/memif.ba.go b/internal/testbinapi/binapi2001/memif/memif.ba.go
index d3a0963..e1e9178 100644
--- a/internal/testbinapi/binapi2001/memif/memif.ba.go
+++ b/internal/testbinapi/binapi2001/memif/memif.ba.go
@@ -1,6 +1,6 @@
 // Code generated by GoVPP's binapi-generator. DO NOT EDIT.
 // versions:
-//  binapi-generator: v0.4.0-dev
+//  binapi-generator: v0.5.0-dev
 //  VPP:              20.01
 // source: .vppapi/plugins/memif.api.json
 
@@ -14,10 +14,11 @@
 package memif
 
 import (
-	api "git.fd.io/govpp.git/api"
-	codec "git.fd.io/govpp.git/codec"
 	"net"
 	"strconv"
+
+	api "git.fd.io/govpp.git/api"
+	codec "git.fd.io/govpp.git/codec"
 )
 
 // This is a compile-time assertion to ensure that this generated file
@@ -355,15 +356,19 @@ func ParseMacAddress(s string) (MacAddress, error) {
 	copy(macaddr[:], mac[:])
 	return macaddr, nil
 }
+
 func (x MacAddress) ToMAC() net.HardwareAddr {
 	return net.HardwareAddr(x[:])
 }
+
 func (x MacAddress) String() string {
 	return x.ToMAC().String()
 }
+
 func (x *MacAddress) MarshalText() ([]byte, error) {
 	return []byte(x.String()), nil
 }
+
 func (x *MacAddress) UnmarshalText(text []byte) error {
 	mac, err := ParseMacAddress(string(text))
 	if err != nil {
diff --git a/internal/testbinapi/binapi2001/memif/memif_rpc.ba.go b/internal/testbinapi/binapi2001/memif/memif_rpc.ba.go
index 8e6c7bc..e086d64 100644
--- a/internal/testbinapi/binapi2001/memif/memif_rpc.ba.go
+++ b/internal/testbinapi/binapi2001/memif/memif_rpc.ba.go
@@ -5,12 +5,13 @@ package memif
 import (
 	"context"
 	"fmt"
+	"io"
+
 	api "git.fd.io/govpp.git/api"
 	vpe "git.fd.io/govpp.git/internal/testbinapi/binapi2001/vpe"
-	"io"
 )
 
-// RPCService defines RPC service  memif.
+// RPCService defines RPC service memif.
 type RPCService interface {
 	MemifCreate(ctx context.Context, in *MemifCreate) (*MemifCreateReply, error)
 	MemifDelete(ctx context.Context, in *MemifDelete) (*MemifDeleteReply, error)
@@ -33,7 +34,7 @@ func (c *serviceClient) MemifCreate(ctx context.Context, in *MemifCreate) (*Memi
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	return out, api.RetvalToVPPApiError(out.Retval)
 }
 
 func (c *serviceClient) MemifDelete(ctx context.Context, in *MemifDelete) (*MemifDeleteReply, error) {
@@ -42,7 +43,7 @@ func (c *serviceClient) MemifDelete(ctx context.Context, in *MemifDelete) (*Memi
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	return out, api.RetvalToVPPApiError(out.Retval)
 }
 
 func (c *serviceClient) MemifDump(ctx context.Context, in *MemifDump) (RPCService_MemifDumpClient, error) {
@@ -78,6 +79,10 @@ func (c *serviceClient_MemifDumpClient) Recv() (*MemifDetails, error) {
 	case *MemifDetails:
 		return m, nil
 	case *vpe.ControlPingReply:
+		err = c.Stream.Close()
+		if err != nil {
+			return nil, err
+		}
 		return nil, io.EOF
 	default:
 		return nil, fmt.Errorf("unexpected message: %T %v", m, m)
@@ -90,7 +95,7 @@ func (c *serviceClient) MemifSocketFilenameAddDel(ctx context.Context, in *Memif
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	return out, api.RetvalToVPPApiError(out.Retval)
 }
 
 func (c *serviceClient) MemifSocketFilenameDump(ctx context.Context, in *MemifSocketFilenameDump) (RPCService_MemifSocketFilenameDumpClient, error) {
@@ -126,6 +131,10 @@ func (c *serviceClient_MemifSocketFilenameDumpClient) Recv() (*MemifSocketFilena
 	case *MemifSocketFilenameDetails:
 		return m, nil
 	case *vpe.ControlPingReply:
+		err = c.Stream.Close()
+		if err != nil {
+			return nil, err
+		}
 		return nil, io.EOF
 	default:
 		return nil, fmt.Errorf("unexpected message: %T %v", m, m)