FD.io VPP  v17.04.2-2-ga8f93f8
Vector Packet Processing
ip4_mfib.h
Go to the documentation of this file.
1 /*
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:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
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.
14  */
15 /**
16  * @brief The IPv4 Multicast-FIB
17  *
18  * FIXME
19  *
20  * This IPv4 FIB is used by the protocol independent FIB. So directly using
21  * this APIs in client code is not encouraged. However, this IPv4 FIB can be
22  * used if all the client wants is an IPv4 prefix data-base
23  */
24 
25 #ifndef __IP4_MFIB_H__
26 #define __IP4_MFIB_H__
27 
28 #include <vlib/vlib.h>
29 #include <vnet/ip/ip.h>
30 
31 #include <vnet/mfib/mfib_table.h>
32 
34  const ip4_address_t *src,
35  const ip4_address_t *grp,
36  u32 len);
38  const ip4_address_t *grp,
39  const ip4_address_t *src,
40  u32 len);
41 
43  const ip4_address_t *grp,
44  const ip4_address_t *src,
45  u32 len);
46 
48  const ip4_address_t *grp,
49  const ip4_address_t *src,
50  u32 len,
51  fib_node_index_t fib_entry_index);
52 extern void ip4_mfib_table_destroy(ip4_mfib_t *fib);
53 
54 /**
55  * @brief Get the FIB at the given index
56  */
57 static inline ip4_mfib_t *
59 {
60  return (&(pool_elt_at_index(ip4_main.mfibs, index)->v4));
61 }
62 
63 /**
64  * @brief Get or create an IPv4 fib.
65  *
66  * Get or create an IPv4 fib with the provided table ID.
67  *
68  * @param table_id
69  * When set to \c ~0, an arbitrary and unused fib ID is picked
70  * and can be retrieved with \c ret->table_id.
71  * Otherwise, the fib ID to be used to retrieve or create the desired fib.
72  * @returns A pointer to the retrieved or created fib.
73  *
74  */
77 
78 static inline
80 {
81  ip4_main_t * im = &ip4_main;
82  uword * p;
83 
84  p = hash_get (im->mfib_index_by_table_id, table_id);
85  if (!p)
86  return ~0;
87 
88  return p[0];
89 }
90 
92 
93 /**
94  * @brief Walk the IP4 mfib table.
95  *
96  * @param mfib the table to walk
97  * @param fn The function to invoke on each entry visited
98  * @param ctx A context passed in the visit function
99  */
100 extern void ip4_mfib_table_walk (ip4_mfib_t *mfib,
102  void *ctx);
103 
104 #endif
static ip4_mfib_t * ip4_mfib_get(u32 index)
Get the FIB at the given index.
Definition: ip4_mfib.h:58
void ip4_mfib_table_entry_insert(ip4_mfib_t *fib, const ip4_address_t *grp, const ip4_address_t *src, u32 len, fib_node_index_t fib_entry_index)
Definition: ip4_mfib.c:225
u32 ip4_mfib_table_get_index_for_sw_if_index(u32 sw_if_index)
Definition: ip4_mfib.c:128
void ip4_mfib_table_walk(ip4_mfib_t *mfib, mfib_table_walk_fn_t fn, void *ctx)
Walk the IP4 mfib table.
Definition: ip4_mfib.c:283
struct mfib_table_t_ * mfibs
Vector of MFIBs.
Definition: ip4.h:115
#define hash_get(h, key)
Definition: hash.h:248
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:397
u32 ip4_mfib_table_create_and_lock(void)
Definition: ip4.h:71
fib_node_index_t ip4_mfib_table_lookup_exact_match(const ip4_mfib_t *fib, const ip4_address_t *grp, const ip4_address_t *src, u32 len)
Definition: ip4_mfib.c:162
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:28
fib_node_index_t ip4_mfib_table_lookup(const ip4_mfib_t *fib, const ip4_address_t *src, const ip4_address_t *grp, u32 len)
The IPv4 Multicast-FIB.
Definition: ip4_mfib.c:187
unsigned int u32
Definition: types.h:88
IPv4 main type.
Definition: ip4.h:107
void ip4_mfib_table_entry_remove(ip4_mfib_t *fib, const ip4_address_t *grp, const ip4_address_t *src, u32 len)
Definition: ip4_mfib.c:256
u64 uword
Definition: types.h:112
void ip4_mfib_table_destroy(ip4_mfib_t *fib)
Definition: ip4_mfib.c:82
int(* mfib_table_walk_fn_t)(fib_node_index_t fei, void *ctx)
Call back function when walking entries in a FIB table.
Definition: mfib_table.h:366
ip4_main_t ip4_main
Global ip4 main structure.
Definition: ip4_forward.c:1117
u32 ip4_mfib_table_find_or_create_and_lock(u32 table_id)
Get or create an IPv4 fib.
Definition: ip4_mfib.c:115
uword * mfib_index_by_table_id
Hash table mapping table id to multicast fib index.
Definition: ip4.h:134
static u32 ip4_mfib_index_from_table_id(u32 table_id)
Definition: ip4_mfib.h:79