Reorganize source tree to use single autotools instance

Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 195 insertions, 0 deletions

diff --git a/src/vnet/fib/fib_entry_src_interface.c b/src/vnet/fib/fib_entry_src_interface.c
new file mode 100644
index 00000000000..ca04716ed8f
--- /dev/null
+++ b/src/vnet/fib/fib_entry_src_interface.c
@@ -0,0 +1,195 @@
+/*
+ * 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"
+#include "fib_path_list.h"
+#include "fib_internal.h"
+#include "fib_table.h"
+#include "fib_entry_cover.h"
+#include "fib_attached_export.h"
+
+/**
+ * Source initialisation Function 
+ */
+static void
+fib_entry_src_interface_init (fib_entry_src_t *src)
+{
+    src->interface.fesi_cover = FIB_NODE_INDEX_INVALID;
+    src->interface.fesi_sibling = FIB_NODE_INDEX_INVALID;
+}
+
+static void
+fib_entry_src_interface_path_swap (fib_entry_src_t *src,
+				   const fib_entry_t *entry,
+				   fib_path_list_flags_t pl_flags,
+				   const fib_route_path_t *paths)
+{
+    ip_adjacency_t *adj;
+
+    src->fes_pl = fib_path_list_create(pl_flags, paths);
+
+    /*
+     * this is a hack to get the entry's prefix into the glean adjacnecy
+     * so that it is available for fast retreival in the switch path.
+     */
+    if (!(FIB_ENTRY_FLAG_LOCAL & src->fes_entry_flags))
+    {
+        adj = adj_get(fib_path_list_get_adj(
+			  src->fes_pl,
+			  fib_entry_get_default_chain_type(entry)));
+
+	if (IP_LOOKUP_NEXT_GLEAN == adj->lookup_next_index)
+        {
+            /*
+             * the connected prefix will link to a glean on a non-p2p
+             * interface.
+             */
+            adj->sub_type.glean.receive_addr = entry->fe_prefix.fp_addr;
+        }
+    }
+}
+
+/*
+ * Source activate. 
+ * Called when the source is teh new longer best source on the entry
+ */
+static int
+fib_entry_src_interface_activate (fib_entry_src_t *src,
+				  const fib_entry_t *fib_entry)
+{
+    fib_entry_t *cover;
+
+    if (FIB_ENTRY_FLAG_LOCAL & src->fes_entry_flags)
+    {
+	/*
+	 * Track the covering attached/connected cover. This is so that
+	 * during an attached export of the cover, this local prefix is
+	 * also exported
+	 */
+	src->interface.fesi_cover =
+	    fib_table_get_less_specific(fib_entry->fe_fib_index,
+					&fib_entry->fe_prefix);
+
+	ASSERT(FIB_NODE_INDEX_INVALID != src->interface.fesi_cover);
+
+	cover = fib_entry_get(src->interface.fesi_cover);
+
+	src->interface.fesi_sibling =
+	    fib_entry_cover_track(cover, fib_entry_get_index(fib_entry));
+    }
+
+    return (!0);
+}
+
+
+/*
+ * Source Deactivate. 
+ * Called when the source is no longer best source on the entry
+ */
+static void
+fib_entry_src_interface_deactivate (fib_entry_src_t *src,
+				    const fib_entry_t *fib_entry)
+{
+    fib_entry_t *cover;
+
+    /*
+     * remove the depednecy on the covering entry
+     */
+    if (FIB_NODE_INDEX_INVALID != src->interface.fesi_cover)
+    {
+	cover = fib_entry_get(src->interface.fesi_cover);
+
+	fib_entry_cover_untrack(cover, src->interface.fesi_sibling);
+
+	src->interface.fesi_cover = FIB_NODE_INDEX_INVALID;
+    }
+}
+
+static fib_entry_src_cover_res_t
+fib_entry_src_interface_cover_change (fib_entry_src_t *src,
+				      const fib_entry_t *fib_entry)
+{
+    fib_entry_src_cover_res_t res = {
+	.install = !0,
+	.bw_reason = FIB_NODE_BW_REASON_FLAG_NONE,
+    };
+
+    if (FIB_NODE_INDEX_INVALID == src->interface.fesi_cover)
+    {
+	/*
+	 * not tracking the cover. surprised we got poked?
+	 */
+	return (res);
+    }
+
+    /*
+     * this function is called when this entry's cover has a more specific
+     * entry inserted benaeth it. That does not necessarily mean that this
+     * entry is covered by the new prefix. check that
+     */
+    if (src->rr.fesr_cover != fib_table_get_less_specific(fib_entry->fe_fib_index,
+							  &fib_entry->fe_prefix))
+    {
+	fib_entry_src_interface_deactivate(src, fib_entry);
+	fib_entry_src_interface_activate(src, fib_entry);
+    }
+    return (res);
+}
+
+static void
+fib_entry_src_interface_installed (fib_entry_src_t *src,
+				   const fib_entry_t *fib_entry)
+{
+    /*
+     * The interface source now rules! poke our cover to get exported
+     */
+    fib_entry_t *cover;
+
+    if (FIB_NODE_INDEX_INVALID != src->interface.fesi_cover)
+    {
+	cover = fib_entry_get(src->interface.fesi_cover);
+
+	fib_attached_export_covered_added(cover,
+					  fib_entry_get_index(fib_entry));
+    }
+}
+
+static u8*
+fib_entry_src_interface_format (fib_entry_src_t *src,
+				u8* s)
+{
+    return (format(s, "cover:%d", src->interface.fesi_cover));
+}
+
+const static fib_entry_src_vft_t interface_src_vft = {
+    .fesv_init = fib_entry_src_interface_init,
+    .fesv_path_swap = fib_entry_src_interface_path_swap,
+    .fesv_activate = fib_entry_src_interface_activate,
+    .fesv_deactivate = fib_entry_src_interface_deactivate,
+    .fesv_format = fib_entry_src_interface_format,
+    .fesv_installed = fib_entry_src_interface_installed,
+    .fesv_cover_change = fib_entry_src_interface_cover_change,
+    /*
+     * not concerned about updates to the cover. the cover will
+     * decide to export or not
+     */
+};
+
+void
+fib_entry_src_interface_register (void)
+{
+    fib_entry_src_register(FIB_SOURCE_INTERFACE, &interface_src_vft);    
+}