BIER

- see draft-ietf-bier-mpls-encapsulation-10
- midpoint, head and tail functions
- supported payload protocols; IPv4 and IPv6 only.

Change-Id: I59d7363bb6fdfdce8e4016a68a9c8f5a5e5791cb
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 110 insertions, 0 deletions

diff --git a/src/vnet/bier/bier_disp_table.h b/src/vnet/bier/bier_disp_table.h
new file mode 100644
index 00000000000..18726c8ee6a
--- /dev/null
+++ b/src/vnet/bier/bier_disp_table.h
@@ -0,0 +1,110 @@
+/*
+ * 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.
+ */
+
+#ifndef __BIER_DISP_TABLE_H__
+#define __BIER_DISP_TABLE_H__
+
+#include <vnet/ip/ip.h>
+#include <vnet/adj/adj.h>
+#include <vnet/dpo/replicate_dpo.h>
+
+#include <vnet/bier/bier_types.h>
+#include <vnet/bier/bier_disp_entry.h>
+
+/**
+ * @brief
+ *   A protocol Independent IP multicast FIB table
+ */
+typedef struct bier_disp_table_t_
+{
+    /**
+     * number of locks on the table
+     */
+    u16 bdt_locks;
+
+    /**
+     * Table ID (hash key) for this FIB.
+     */
+    u32 bdt_table_id;
+
+    /**
+     * The lookup DB based on sender BP. Value is the index of the
+     * BIER disp object.
+     */
+    index_t bdt_db[BIER_BP_MAX];
+} bier_disp_table_t;
+
+/**
+ * @brief
+ *  Format the description/name of the table
+ */
+extern u8* format_bier_disp_table(u8* s, va_list *ap);
+
+extern void bier_disp_table_entry_path_add(u32 table_id,
+                                           bier_bp_t src,
+                                           bier_hdr_proto_id_t payload_proto,
+                                           const fib_route_path_t *rpath);
+
+extern void bier_disp_table_entry_path_remove(u32 table_id,
+                                              bier_bp_t src,
+                                              bier_hdr_proto_id_t payload_proto,
+                                              const fib_route_path_t *paths);
+
+extern index_t bier_disp_table_find(u32 table_id);
+
+
+extern index_t bier_disp_table_add_or_lock(u32 table_id);
+extern void bier_disp_table_unlock_w_table_id(u32 table_id);
+
+extern void bier_disp_table_unlock(index_t bdti);
+extern void bier_disp_table_lock(index_t bdti);
+extern void bier_disp_table_contribute_forwarding(index_t bdti,
+                                                  dpo_id_t *dpo);
+
+/**
+ * Types and functions to walk all the entries in one BIER Table
+ */
+typedef void (*bier_disp_table_walk_fn_t)(const bier_disp_table_t *bdt,
+                                          const bier_disp_entry_t *bde,
+                                          u16 bp,
+                                          void *ctx);
+extern void bier_disp_table_walk(u32 table_id,
+                                 bier_disp_table_walk_fn_t fn,
+                                 void *ctx);
+
+/**
+ * @brief
+ * Get a pointer to a FIB table
+ */
+extern bier_disp_table_t *bier_disp_table_pool;
+
+static inline bier_disp_table_t *
+bier_disp_table_get (index_t bdti)
+{
+    return (pool_elt_at_index(bier_disp_table_pool, bdti));
+}
+
+static inline index_t
+bier_disp_table_lookup (index_t bdti,
+                        bier_bp_t src)
+{
+    bier_disp_table_t *bdt;
+
+    bdt = bier_disp_table_get(bdti);
+
+    return (bdt->bdt_db[src]);
+}
+
+#endif