2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
19 #ifndef __LOAD_BALANCE_MAP_H__
20 #define __LOAD_BALANCE_MAP_H__
22 #include <vlib/vlib.h>
23 #include <vnet/fib/fib_types.h>
24 #include <vnet/dpo/load_balance.h>
26 struct load_balance_map_path_t_;
30 typedef struct load_balance_map_t_ {
32 * The buckets of the map that provide the index to index translation.
33 * In the first cacheline.
38 * the vector of paths this MAP represents
40 struct load_balance_map_path_t_ *lbm_paths;
43 * the sum of the normalised weights. cache for convenience
45 u32 lbm_sum_of_norm_weights;
48 * Number of locks. Maps are shared by a large number of recrusvie fib_entry_ts
53 extern index_t load_balance_map_add_or_lock(u32 n_buckets,
55 const load_balance_path_t *norm_paths);
57 extern void load_balance_map_lock(index_t lmbi);
58 extern void load_balance_map_unlock(index_t lbmi);
60 extern void load_balance_map_path_state_change(fib_node_index_t path_index);
62 extern u8* format_load_balance_map(u8 *s, va_list ap);
63 extern void load_balance_map_show_mem(void);
66 * The encapsulation breakages are for fast DP access
68 extern load_balance_map_t *load_balance_map_pool;
70 static inline load_balance_map_t*
71 load_balance_map_get (index_t lbmi)
73 return (pool_elt_at_index(load_balance_map_pool, lbmi));
77 extern void load_balance_map_module_init(void);