gre: move to a plugin

Move GRE folder under vnet to the plugin folder, and modify some of path
of the #inlude<header> to the new path.

Add a plugin.c file to register a plugin.

JIRA: VPP-2044

Type: improvement
Change-Id: I7f64cecd97538a7492e56a41558dab58281a9fa5
Signed-off-by: Chuhao Tang <nicotang@cisco.com>

1 files changed, 0 insertions, 23 deletions

diff --git a/src/vnet/gre/error.def b/src/vnet/gre/error.def
deleted file mode 100644
index 161ecc1d874..00000000000
--- a/src/vnet/gre/error.def
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * gre_error.def: gre errors
- *
- * Copyright (c) 2012 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-gre_error (NONE, "no error")
-gre_error (UNKNOWN_PROTOCOL, "unknown protocol")
-gre_error (UNSUPPORTED_VERSION, "unsupported version")
-gre_error (PKTS_DECAP, "GRE input packets decapsulated")
-gre_error (PKTS_ENCAP, "GRE output packets encapsulated")
-gre_error (NO_SUCH_TUNNEL, "GRE input packets dropped due to missing tunnel")