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 #include <vlib/vlib.h>
20 #include <vnet/ip/format.h>
21 #include <vnet/fib/fib_entry.h>
22 #include <vnet/fib/fib_table.h>
23 #include <vnet/fib/fib_urpf_list.h>
24 #include <vnet/ip/lookup.h>
25 #include <vnet/dpo/load_balance.h>
27 extern fib_node_index_t ip6_fib_table_lookup(u32 fib_index,
28 const ip6_address_t *addr,
30 extern fib_node_index_t ip6_fib_table_lookup_exact_match(u32 fib_index,
31 const ip6_address_t *addr,
34 extern void ip6_fib_table_entry_remove(u32 fib_index,
35 const ip6_address_t *addr,
38 extern void ip6_fib_table_entry_insert(u32 fib_index,
39 const ip6_address_t *addr,
41 fib_node_index_t fib_entry_index);
42 extern void ip6_fib_table_destroy(u32 fib_index);
44 extern void ip6_fib_table_fwding_dpo_update(u32 fib_index,
45 const ip6_address_t *addr,
49 extern void ip6_fib_table_fwding_dpo_remove(u32 fib_index,
50 const ip6_address_t *addr,
54 u32 ip6_fib_table_fwding_lookup_with_if_index(ip6_main_t * im,
56 const ip6_address_t * dst);
57 u32 ip6_fib_table_fwding_lookup(ip6_main_t * im,
59 const ip6_address_t * dst);
62 * @brief Walk all entries in a FIB table
63 * N.B: This is NOT safe to deletes. If you need to delete walk the whole
64 * table and store elements in a vector, then delete the elements
66 extern void ip6_fib_table_walk(u32 fib_index,
67 fib_table_walk_fn_t fn,
71 * @brief returns number of links on which src is reachable.
74 ip6_urpf_loose_check (ip6_main_t * im,
78 const load_balance_t *lb0;
81 lbi = ip6_fib_table_fwding_lookup_with_if_index(
83 vnet_buffer (b)->sw_if_index[VLIB_RX],
86 lb0 = load_balance_get(lbi);
88 return (fib_urpf_check_size (lb0->lb_urpf));
92 * @brief return the DPO that the LB stacks on.
95 ip6_src_lookup_for_packet (ip6_main_t * im,
99 if (vnet_buffer (b)->ip.adj_index[VLIB_RX] == ~0)
104 lbi = ip6_fib_table_fwding_lookup_with_if_index(
106 vnet_buffer (b)->sw_if_index[VLIB_RX],
109 dpo = load_balance_get_bucket_i(load_balance_get(lbi), 0);
113 vnet_buffer (b)->ip.adj_index[VLIB_RX] = dpo->dpoi_index;
116 return vnet_buffer (b)->ip.adj_index[VLIB_RX];
120 * \brief Get or create an IPv6 fib.
122 * Get or create an IPv4 fib with the provided table ID.
127 * When set to \c ~0, an arbitrary and unused fib ID is picked
128 * and can be retrieved with \c ret->table_id.
129 * Otherwise, the fib ID to be used to retrieve or create the desired fib.
130 * \returns A pointer to the retrieved or created fib.
133 extern u32 ip6_fib_table_find_or_create_and_lock(u32 table_id);
134 extern u32 ip6_fib_table_create_and_lock(void);
136 static inline ip6_fib_t *
137 ip6_fib_get (fib_node_index_t index)
139 ASSERT(!pool_is_free_index(ip6_main.fibs, index));
140 return (&pool_elt_at_index (ip6_main.fibs, index)->v6);
144 u32 ip6_fib_index_from_table_id (u32 table_id)
146 ip6_main_t * im = &ip6_main;
149 p = hash_get (im->fib_index_by_table_id, table_id);
156 extern u32 ip6_fib_table_get_index_for_sw_if_index(u32 sw_if_index);
158 extern flow_hash_config_t ip6_fib_table_get_flow_hash_config(u32 fib_index);