fib: Decouple source from priority and behaviour

Type: feature

the fib_source_t enum alone no longer defines the priority and
behaviour, instead each source must be allocated these attributes.
This allows the creation of other sources by the plugins (and
soon over the API).

Signed-off-by: Neale Ranns <nranns@cisco.com>
Change-Id: I890ee820fbc16079ee417ea1fbc163192806e853

1 files changed, 77 insertions, 0 deletions

diff --git a/src/vnet/fib/fib_entry_src_simple.c b/src/vnet/fib/fib_entry_src_simple.c
new file mode 100644
index 00000000000..2caa4fcc1e1
--- /dev/null
+++ b/src/vnet/fib/fib_entry_src_simple.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2016 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.
+ */
+
+#include "fib_entry.h"
+#include "fib_entry_src.h"
+
+/**
+ * Source initialisation Function
+ */
+static void
+fib_entry_src_simple_init (fib_entry_src_t *src)
+{
+    src->fes_flags = FIB_ENTRY_SRC_FLAG_NONE;
+}
+
+/**
+ * Source deinitialisation Function
+ */
+static void
+fib_entry_src_simple_deinit (fib_entry_src_t *src)
+{
+}
+
+static void
+fib_entry_src_simple_remove (fib_entry_src_t *src)
+{
+    src->fes_pl = FIB_NODE_INDEX_INVALID;
+}
+
+static void
+fib_entry_src_simple_add (fib_entry_src_t *src,
+                          const fib_entry_t *entry,
+                          fib_entry_flag_t flags,
+                          dpo_proto_t proto,
+                          const dpo_id_t *dpo)
+{
+    src->fes_pl =
+	fib_path_list_create_special(proto,
+                                     fib_entry_src_flags_2_path_list_flags(flags),
+                                     dpo);
+}
+
+static void
+fib_entry_src_simple_path_swap (fib_entry_src_t *src,
+                                const fib_entry_t *entry,
+                                fib_path_list_flags_t pl_flags,
+                                const fib_route_path_t *rpaths)
+{
+    src->fes_pl = fib_path_list_create((FIB_PATH_LIST_FLAG_SHARED | pl_flags),
+				       rpaths);
+}
+
+const static fib_entry_src_vft_t simple_src_vft = {
+    .fesv_init = fib_entry_src_simple_init,
+    .fesv_deinit = fib_entry_src_simple_deinit,
+    .fesv_add = fib_entry_src_simple_add,
+    .fesv_remove = fib_entry_src_simple_remove,
+    .fesv_path_swap = fib_entry_src_simple_path_swap,
+};
+
+void
+fib_entry_src_simple_register (void)
+{
+    fib_entry_src_behaviour_register(FIB_SOURCE_BH_SIMPLE, &simple_src_vft);
+}