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
|
/*
* Copyright (c) 2015 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.
*/
#ifndef included_vnet_vxlan_h
#define included_vnet_vxlan_h
#include <vppinfra/error.h>
#include <vppinfra/hash.h>
#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
#include <vnet/l2/l2_input.h>
#include <vnet/l2/l2_output.h>
#include <vnet/l2/l2_bd.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/vxlan/vxlan_packet.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/udp/udp.h>
#include <vnet/dpo/dpo.h>
#include <vnet/adj/adj_types.h>
typedef CLIB_PACKED (struct {
ip4_header_t ip4; /* 20 bytes */
udp_header_t udp; /* 8 bytes */
vxlan_header_t vxlan; /* 8 bytes */
}) ip4_vxlan_header_t;
typedef CLIB_PACKED (struct {
ip6_header_t ip6; /* 40 bytes */
udp_header_t udp; /* 8 bytes */
vxlan_header_t vxlan; /* 8 bytes */
}) ip6_vxlan_header_t;
typedef CLIB_PACKED(struct {
/*
* Key fields: ip src and vxlan vni on incoming VXLAN packet
* all fields in NET byte order
*/
union {
struct {
u32 src;
u32 vni; /* shifted left 8 bits */
};
u64 as_u64;
};
}) vxlan4_tunnel_key_t;
typedef CLIB_PACKED(struct {
/*
* Key fields: ip src and vxlan vni on incoming VXLAN packet
* all fields in NET byte order
*/
ip6_address_t src;
u32 vni; /* shifted left 8 bits */
}) vxlan6_tunnel_key_t;
typedef struct {
/* Rewrite string. $$$$ embed vnet_rewrite header */
u8 * rewrite;
/* FIB DPO for IP forwarding of VXLAN encap packet */
dpo_id_t next_dpo;
/* vxlan VNI in HOST byte order */
u32 vni;
/* tunnel src and dst addresses */
ip46_address_t src;
ip46_address_t dst;
/* mcast packet output intfc index (used only if dst is mcast) */
u32 mcast_sw_if_index;
/* decap next index */
u32 decap_next_index;
/* The FIB index for src/dst addresses */
u32 encap_fib_index;
/* vnet intfc index */
u32 sw_if_index;
u32 hw_if_index;
/**
* Linkage into the FIB object graph
*/
fib_node_t node;
/*
* The FIB entry for (depending on VXLAN tunnel is unicast or mcast)
* sending unicast VXLAN encap packets or receiving mcast VXLAN packets
*/
fib_node_index_t fib_entry_index;
adj_index_t mcast_adj_index;
/**
* The tunnel is a child of the FIB entry for its desintion. This is
* so it receives updates when the forwarding information for that entry
* changes.
* The tunnels sibling index on the FIB entry's dependency list.
*/
u32 sibling_index;
} vxlan_tunnel_t;
#define foreach_vxlan_input_next \
_(DROP, "error-drop") \
_(L2_INPUT, "l2-input")
typedef enum {
#define _(s,n) VXLAN_INPUT_NEXT_##s,
foreach_vxlan_input_next
#undef _
VXLAN_INPUT_N_NEXT,
} vxlan_input_next_t;
typedef enum {
#define vxlan_error(n,s) VXLAN_ERROR_##n,
#include <vnet/vxlan/vxlan_error.def>
#undef vxlan_error
VXLAN_N_ERROR,
} vxlan_input_error_t;
typedef struct {
/* vector of encap tunnel instances */
vxlan_tunnel_t * tunnels;
/* lookup tunnel by key */
uword * vxlan4_tunnel_by_key; /* keyed on ipv4.dst + vni */
uword * vxlan6_tunnel_by_key; /* keyed on ipv6.dst + vni */
/* local VTEP IPs ref count used by vxlan-bypass node to check if
received VXLAN packet DIP matches any local VTEP address */
uword * vtep4; /* local ip4 VTEPs keyed on their ip4 addr */
uword * vtep6; /* local ip6 VTEPs keyed on their ip6 addr */
/* mcast shared info */
uword * mcast_shared; /* keyed on mcast ip46 addr */
/* Free vlib hw_if_indices */
u32 * free_vxlan_tunnel_hw_if_indices;
/* Mapping from sw_if_index to tunnel index */
u32 * tunnel_index_by_sw_if_index;
/* convenience */
vlib_main_t * vlib_main;
vnet_main_t * vnet_main;
} vxlan_main_t;
vxlan_main_t vxlan_main;
extern vlib_node_registration_t vxlan4_input_node;
extern vlib_node_registration_t vxlan6_input_node;
extern vlib_node_registration_t vxlan4_encap_node;
extern vlib_node_registration_t vxlan6_encap_node;
u8 * format_vxlan_encap_trace (u8 * s, va_list * args);
typedef struct {
u8 is_add;
/* we normally use is_ip4, but since this adds to the
* structure, this seems less of abreaking change */
u8 is_ip6;
ip46_address_t src, dst;
u32 mcast_sw_if_index;
u32 encap_fib_index;
u32 decap_next_index;
u32 vni;
} vnet_vxlan_add_del_tunnel_args_t;
int vnet_vxlan_add_del_tunnel
(vnet_vxlan_add_del_tunnel_args_t *a, u32 * sw_if_indexp);
void vnet_int_vxlan_bypass_mode
(u32 sw_if_index, u8 is_ip6, u8 is_enable);
#endif /* included_vnet_vxlan_h */
|
