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Vector Packet Processing
mpls_tunnel.h
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1 /*
2  * Copyright (c) 2015 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 #ifndef __MPLS_TUNNEL_H__
17 #define __MPLS_TUNNEL_H__
18 
19 #include <vnet/mpls/mpls.h>
20 #include <vnet/fib/fib_path_ext.h>
21 
23 {
25  /**
26  * @brief The tunnel is L2 only
27  */
29  /**
30  * @brief The tunnel has an underlying multicast LSP
31  */
35 
36 #define MPLS_TUNNEL_ATTRIBUTES { \
37  [MPLS_TUNNEL_ATTRIBUTE_MCAST] = "multicast", \
38  [MPLS_TUNNEL_ATTRIBUTE_L2] = "L2", \
39 }
40 #define FOR_EACH_MPLS_TUNNEL_ATTRIBUTE(_item) \
41  for (_item = MPLS_TUNNEL_ATTRIBUTE_FIRST; \
42  _item <= MPLS_TUNNEL_ATTRIBUTE_LAST; \
43  _item++)
44 
45 typedef enum mpls_tunnel_flag_t_ {
49 } __attribute__ ((packed)) mpls_tunnel_flags_t;
50 
51 
52 /**
53  * @brief A uni-directional MPLS tunnel
54  */
55 typedef struct mpls_tunnel_t_
56 {
57  /**
58  * @brief The tunnel hooks into the FIB control plane graph.
59  */
61 
62  /**
63  * @brief Tunnel flags
64  */
65  mpls_tunnel_flags_t mt_flags;
66 
67  /**
68  * @brief If the tunnel is an L2 tunnel, this is the link type ETHERNET
69  * load-balance
70  */
72 
73  /**
74  * @brief The HW interface index of the tunnel interfaces
75  */
77 
78  /**
79  * @brief The SW interface index of the tunnel interfaces
80  */
82 
83  /**
84  * @brief The path-list over which the tunnel's destination is reachable
85  */
87 
88  /**
89  * @brief sibling index on the path-list so notifications are received.
90  */
92 
93  /**
94  * A vector of path extensions o hold the label stack for each path
95  */
98 
99 /**
100  * @brief Create a new MPLS tunnel
101  * @return the SW Interface index of the newly created tuneel
102  */
103 extern u32 vnet_mpls_tunnel_create (u8 l2_only,
104  u8 is_multicast);
105 
106 /**
107  * @brief Add a path to an MPLS tunnel
108  */
109 extern void vnet_mpls_tunnel_path_add (u32 sw_if_index,
110  fib_route_path_t *rpath);
111 
112 /**
113  * @brief remove a path from a tunnel.
114  * @return the number of remaining paths. 0 implies the tunnel can be deleted
115  */
116 extern int vnet_mpls_tunnel_path_remove (u32 sw_if_index,
117  fib_route_path_t *rpath);
118 
119 /**
120  * @brief Delete an MPLS tunnel
121  */
122 extern void vnet_mpls_tunnel_del (u32 sw_if_index);
123 
124 extern const mpls_tunnel_t *mpls_tunnel_get(u32 index);
125 
126 /**
127  * @brief Callback function invoked while walking MPLS tunnels
128  */
129 typedef void (*mpls_tunnel_walk_cb_t)(u32 index, void *ctx);
130 
131 /**
132  * @brief Walk all the MPLS tunnels
133  */
135  void *ctx);
136 
137 #endif
int vnet_mpls_tunnel_path_remove(u32 sw_if_index, fib_route_path_t *rpath)
remove a path from a tunnel.
Definition: mpls_tunnel.c:709
A representation of a path as described by a route producer.
Definition: fib_types.h:455
fib_node_index_t mt_path_list
The path-list over which the tunnel&#39;s destination is reachable.
Definition: mpls_tunnel.h:86
mpls_tunnel_flags_t mt_flags
Tunnel flags.
Definition: mpls_tunnel.h:65
A uni-directional MPLS tunnel.
Definition: mpls_tunnel.h:55
const mpls_tunnel_t * mpls_tunnel_get(u32 index)
Definition: mpls_tunnel.c:561
fib_node_t mt_node
The tunnel hooks into the FIB control plane graph.
Definition: mpls_tunnel.h:60
void(* mpls_tunnel_walk_cb_t)(u32 index, void *ctx)
Callback function invoked while walking MPLS tunnels.
Definition: mpls_tunnel.h:129
mpls_tunnel_flag_t_
Definition: mpls_tunnel.h:45
void vnet_mpls_tunnel_path_add(u32 sw_if_index, fib_route_path_t *rpath)
Add a path to an MPLS tunnel.
Definition: mpls_tunnel.c:657
fib_path_ext_list_t mt_path_exts
A vector of path extensions o hold the label stack for each path.
Definition: mpls_tunnel.h:96
The identity of a DPO is a combination of its type and its instance number/index of objects of that t...
Definition: dpo.h:168
void vnet_mpls_tunnel_del(u32 sw_if_index)
Delete an MPLS tunnel.
Definition: mpls_tunnel.c:582
u32 mt_sibling_index
sibling index on the path-list so notifications are received.
Definition: mpls_tunnel.h:91
A list of path-extensions.
Definition: fib_types.h:581
The tunnel has an underlying multicast LSP.
Definition: mpls_tunnel.h:32
An node in the FIB graph.
Definition: fib_node.h:286
struct mpls_tunnel_t_ mpls_tunnel_t
A uni-directional MPLS tunnel.
void mpls_tunnel_walk(mpls_tunnel_walk_cb_t cb, void *ctx)
Walk all the MPLS tunnels.
Definition: mpls_tunnel.c:570
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:30
mpls_tunnel_attribute_t_
Definition: mpls_tunnel.h:22
unsigned int u32
Definition: types.h:88
long ctx[MAX_CONNS]
Definition: main.c:126
u32 mt_hw_if_index
The HW interface index of the tunnel interfaces.
Definition: mpls_tunnel.h:76
u32 vnet_mpls_tunnel_create(u8 l2_only, u8 is_multicast)
Create a new MPLS tunnel.
Definition: mpls_tunnel.c:602
unsigned char u8
Definition: types.h:56
The tunnel is L2 only.
Definition: mpls_tunnel.h:28
enum mpls_tunnel_flag_t_ mpls_tunnel_flags_t
u32 mt_sw_if_index
The SW interface index of the tunnel interfaces.
Definition: mpls_tunnel.h:81
dpo_id_t mt_l2_lb
If the tunnel is an L2 tunnel, this is the link type ETHERNET load-balance.
Definition: mpls_tunnel.h:71
enum mpls_tunnel_attribute_t_ mpls_tunnel_attribute_t