2 * mpls_fib.h: The Label/MPLS FIB
4 * Copyright (c) 2012 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #ifndef __MPLS_FIB_TABLE_H__
19 #define __MPLS_FIB_TABLE_H__
21 #include <vnet/vnet.h>
22 #include <vnet/mpls/mpls.h>
23 #include <vnet/fib/fib_types.h>
24 #include <vnet/dpo/dpo.h>
25 #include <vnet/mpls/mpls.h>
26 #include <vnet/fib/fib_table.h>
28 static inline mpls_fib_t*
29 mpls_fib_get (fib_node_index_t index)
31 if (!pool_is_free_index(mpls_main.fibs, index))
32 return (&(pool_elt_at_index(mpls_main.fibs, index)->mpls));
36 extern u32 mpls_fib_table_find_or_create_and_lock(u32 table_id);
37 extern u32 mpls_fib_table_create_and_lock(void);
38 // extern mpls_fib_t * mpls_fib_find(u32 table_id);
39 extern u32 mpls_fib_index_from_table_id(u32 table_id);
41 extern u8 *format_mpls_fib_table_name(u8 * s, va_list * args);
43 extern fib_node_index_t mpls_fib_table_entry_add_from_ip_fib_entry (
47 fib_node_index_t fib_entry_index);
50 extern fib_node_index_t mpls_fib_table_lookup(const mpls_fib_t *mf,
54 extern void mpls_fib_table_entry_remove(mpls_fib_t *mf,
57 extern void mpls_fib_table_entry_insert(mpls_fib_t *mf,
60 fib_node_index_t fei);
61 extern void mpls_fib_table_destroy(mpls_fib_t *mf);
65 extern void mpls_fib_forwarding_table_update(mpls_fib_t *mf,
69 extern void mpls_fib_forwarding_table_reset(mpls_fib_t *mf,
74 * @brief Walk all entries in a FIB table
75 * N.B: This is NOT safe to deletes. If you need to delete walk the whole
76 * table and store elements in a vector, then delete the elements
78 extern void mpls_fib_table_walk(mpls_fib_t *fib,
79 fib_table_walk_fn_t fn,
84 * Lookup a label and EOS bit in the MPLS_FIB table to retrieve the
85 * load-balance index to be used for packet forwarding.
88 mpls_fib_table_forwarding_lookup (u32 mpls_fib_index,
89 const mpls_unicast_header_t *hdr)
95 label = clib_net_to_host_u32(hdr->label_exp_s_ttl);
96 key = (vnet_mpls_uc_get_label(label) << 1) | vnet_mpls_uc_get_s(label);
98 mf = mpls_fib_get(mpls_fib_index);
100 return (mf->mf_lbs[key]);
104 mpls_fib_table_get_index_for_sw_if_index (u32 sw_if_index)
106 mpls_main_t *mm = &mpls_main;
108 ASSERT(vec_len(mm->fib_index_by_sw_if_index) > sw_if_index);
110 return (mm->fib_index_by_sw_if_index[sw_if_index]);
113 extern flow_hash_config_t mpls_fib_table_get_flow_hash_config(u32 fib_index);