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Diffstat (limited to 'vnet/vnet/adj/adj_types.h')
-rw-r--r-- | vnet/vnet/adj/adj_types.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/vnet/vnet/adj/adj_types.h b/vnet/vnet/adj/adj_types.h new file mode 100644 index 00000000..a7234663 --- /dev/null +++ b/vnet/vnet/adj/adj_types.h @@ -0,0 +1,38 @@ +/* + * 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 __ADJ_TYPES_H__ +#define __ADJ_TYPES_H__ + +#include <vnet/vnet.h> + +/** + * @brief An index for adjacencies. + * Alas 'C' is not typesafe enough to b0rk when a u32 is used instead of + * an adi_index_t. However, for us humans, we can glean much more intent + * from the declaration + * foo bar(adj_index_t t); + * than we can from + * foo bar(u32 t); + */ +typedef u32 adj_index_t; + +/** + * @brief Invalid ADJ index - used when no adj is known + * likewise blazoned capitals INVALID speak volumes where ~0 does not. + */ +#define ADJ_INDEX_INVALID ((u32)~0) + +#endif |