1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
/*
* Copyright (c) 2016 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file
* @brief LISP-GPE definitions.
*/
#ifndef __LISP_GPE_FWD_ENTRY_H__
#define __LISP_GPE_FWD_ENTRY_H__
#include <vnet/lisp-gpe/lisp_gpe.h>
/**
* @brief A path on which to forward lisp traffic
*/
typedef struct lisp_fwd_path_t_
{
/**
* The adjacency constructed for the locator pair
*/
index_t lisp_adj;
/**
* Priority. Only the paths with the best priority will be installed in FIB
*/
u8 priority;
/**
* [UE]CMP weigt for the path
*/
u8 weight;
} lisp_fwd_path_t;
/**
* @brief A Forwarding entry can be 'normal' or 'negative'
* Negative implies we deliberately want to add a FIB entry for an EID
* that results in 'special' behaviour determined by an 'action'.
* @normal means send it down some tunnels.
*/
typedef enum lisp_gpe_fwd_entry_type_t_
{
LISP_GPE_FWD_ENTRY_TYPE_NORMAL,
LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE,
} lisp_gpe_fwd_entry_type_t;
/**
* LISP-GPE fwd entry key
*/
typedef struct lisp_gpe_fwd_entry_key_t_
{
dp_address_t rmt;
dp_address_t lcl;
u32 vni;
} lisp_gpe_fwd_entry_key_t;
/**
* @brief A LISP Forwarding Entry
*
* A forwarding entry is from a locai EID to a remote EID over a set of rloc pairs
*/
typedef struct lisp_gpe_fwd_entry_t_
{
/**
* Follows src/dst or dst only forwarding policy
*/
u8 is_src_dst;
/**
* This object joins the FIB control plane graph to receive updates to
* for changes to the graph.
*/
fib_node_t node;
/**
* The Entry's key: {lEID,rEID,vni}
*/
lisp_gpe_fwd_entry_key_t *key;
/**
* The forwarding entry type
*/
lisp_gpe_fwd_entry_type_t type;
/**
* The tenant the entry belongs to
*/
u32 tenant;
/**
* The VRF (in the case of L3) or Bridge-Domain (for L2) index
*/
union
{
/**
* Fields relevant to an L2 entry
*/
struct
{
/**
* The VRF ID
*/
u32 eid_table_id;
/**
* The FIB index for the overlay, i.e. the FIB in which the EIDs
* are present
*/
u32 eid_fib_index;
/**
* The SRC-FIB index for created for anding source-route entries
*/
u32 src_fib_index;
};
/**
* Fields relevant to an L2 entry
*/
struct
{
/**
* The Bridge-Domain (for L2) index
*/
u32 eid_bd_id;
/**
* The Bridge-domain index for the overlay EIDs
*/
u32 eid_bd_index;
/**
* The path-list created for the forwarding
*/
fib_node_index_t path_list_index;
/**
* Child index of this entry on the path-list
*/
u32 child_index;
/**
* The DPO used to forward
*/
dpo_id_t dpo;
} l2;
/**
* Fields relevant to an NSH entry
*/
struct
{
/**
* The path-list created for the forwarding
*/
fib_node_index_t path_list_index;
/**
* Child index of this entry on the path-list
*/
u32 child_index;
/**
* The DPO contributed by NSH
*/
dpo_id_t dpo;
/**
* The DPO used for forwarding. Obtained after stacking tx node
* onto lb choice
*/
dpo_id_t choice;
} nsh;
};
union
{
/**
* @brief When the type is 'normal'
* The RLOC pair that form the route's paths. i.e. where to send
* packets for this route.
*/
lisp_fwd_path_t *paths;
/**
* @brief When the type is negative. The action to take.
*/
negative_fwd_actions_e action;
};
} lisp_gpe_fwd_entry_t;
extern int
vnet_lisp_gpe_add_del_fwd_entry (vnet_lisp_gpe_add_del_fwd_entry_args_t * a,
u32 * hw_if_indexp);
extern void vnet_lisp_gpe_fwd_entry_flush (void);
extern u32 lisp_l2_fib_lookup (lisp_gpe_main_t * lgm,
u16 bd_index, u8 src_mac[8], u8 dst_mac[8]);
extern const dpo_id_t *lisp_nsh_fib_lookup (lisp_gpe_main_t * lgm,
u32 spi_si);
extern void
vnet_lisp_del_fwd_stats (vnet_lisp_gpe_add_del_fwd_entry_args_t * a,
u32 fwd_entry_index);
#endif
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
