aboutsummaryrefslogtreecommitdiffstats
path: root/vnet/vnet/mpls-gre/mpls.h
blob: e2fe42ece753f4199fa8013ad98e738dbcf7134a (plain)
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
226
227
228
229
230
231
/*
 * 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_mpls_gre_h
#define included_vnet_mpls_gre_h

#include <vnet/vnet.h>
#include <vnet/gre/gre.h>
#include <vnet/mpls-gre/packet.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ethernet/ethernet.h>

typedef CLIB_PACKED (struct {
  ip4_header_t ip4;             /* 20 bytes */
  gre_header_t gre;             /* 4 bytes */
  mpls_unicast_header_t labels[0];   /* 4 bytes each */
}) ip4_gre_and_mpls_header_t;

extern vnet_hw_interface_class_t mpls_gre_hw_interface_class;

typedef enum {
#define mpls_error(n,s) MPLS_ERROR_##n,
#include <vnet/mpls-gre/error.def>
#undef mpls_error
  MPLS_N_ERROR,
} mpls_gre_error_t;

/* 
 * No protocol info, MPLS labels don't have a next-header field 
 * presumably the label field tells all...
 */

typedef struct {
  ip4_address_t tunnel_src;
  ip4_address_t tunnel_dst;
  ip4_address_t intfc_address;
  u32 mask_width;
  u32 inner_fib_index;
  u32 outer_fib_index;
  u32 encap_index;
  u32 hw_if_index;              /* L2 x-connect capable tunnel intfc */
  u8 * rewrite_data;
  u8 l2_only;
} mpls_gre_tunnel_t;

typedef struct {
  u8 tunnel_dst[6];
  ip4_address_t intfc_address;
  u32 tx_sw_if_index;
  u32 inner_fib_index;
  u32 mask_width;
  u32 encap_index;
  u32 hw_if_index;
  u8 * rewrite_data;
  u8 l2_only;
} mpls_eth_tunnel_t;

typedef struct {
  mpls_unicast_header_t *labels;
  /* only for policy tunnels */
  u8 * rewrite;
  u32 output_next_index;
} mpls_encap_t;

typedef struct {
  u32 tx_fib_index;
  u32 next_index;               /* e.g. ip4/6-input, l2-input */
} mpls_decap_t;

typedef struct {
  /* pool of gre tunnel instances */
  mpls_gre_tunnel_t *gre_tunnels;
  u32 * free_gre_sw_if_indices;

  /* pool of ethernet tunnel instances */
  mpls_eth_tunnel_t *eth_tunnels;
  u32 * free_eth_sw_if_indices;

  /* Encap side: map (fib, dst_address) to mpls label stack */
  mpls_encap_t * encaps;
  uword * mpls_encap_by_fib_and_dest;

  /* Decap side: map rx label to FIB */
  mpls_decap_t * decaps;
  uword * mpls_decap_by_rx_fib_and_label;

  /* mpls-o-e policy tunnel next index for ip4-classify */
  u32 ip_classify_mpls_policy_encap_next_index;

  /* convenience */
  vlib_main_t * vlib_main;
  vnet_main_t * vnet_main;
} mpls_main_t;

mpls_main_t mpls_main;

format_function_t format_mpls_protocol;
format_function_t format_mpls_header;
format_function_t format_mpls_header_with_length;
format_function_t format_mpls_gre_header_with_length;
format_function_t format_mpls_eth_header_with_length;
format_function_t format_mpls_unicast_label;
format_function_t format_mpls_encap_index;

extern vlib_node_registration_t mpls_input_node;
extern vlib_node_registration_t mpls_policy_encap_node;

extern vnet_device_class_t mpls_gre_device_class;

/* Parse mpls protocol as 0xXXXX or protocol name.
   In either host or network byte order. */
unformat_function_t unformat_mpls_protocol_host_byte_order;
unformat_function_t unformat_mpls_protocol_net_byte_order;
unformat_function_t unformat_mpls_label_net_byte_order;
unformat_function_t unformat_mpls_gre_header;
unformat_function_t unformat_pg_mpls_gre_header;

/* Parse mpls header. */
unformat_function_t unformat_mpls_header;
unformat_function_t unformat_pg_mpls_header;

/* manually added to the interface output node in mpls.c */
#define MPLS_GRE_OUTPUT_NEXT_LOOKUP	1
#define MPLS_GRE_OUTPUT_NEXT_DROP	VNET_INTERFACE_TX_NEXT_DROP

mpls_encap_t * 
mpls_encap_by_fib_and_dest (mpls_main_t * mm, u32 rx_fib, u32 dst_address);

int mpls_label_from_fib_id_and_dest (mpls_main_t *gm, u32 fib_id,
                                     u32 dst_address, u32 *labelp);

int vnet_mpls_gre_add_del_tunnel (ip4_address_t *src,
                                  ip4_address_t *dst,
                                  ip4_address_t *intfc,
                                  u32 mask_width,
                                  u32 inner_fib_id, u32 outer_fib_id,
                                  u32 * tunnel_intfc_sw_if_index,
                                  u8 l2_only,
                                  u8 is_add);

int vnet_mpls_ethernet_add_del_tunnel (u8 *dst,
                                       ip4_address_t *intfc,
                                       u32 mask_width,
                                       u32 inner_fib_id, 
                                       u32 tx_sw_if_index,
                                       u32 * tunnel_sw_if_index,
                                       u8 l2_only,
                                       u8 is_add);

int vnet_mpls_gre_delete_fib_tunnels (u32 fib_id);

int mpls_fib_reset_labels (u32 fib_id);

int vnet_mpls_add_del_decap (u32 rx_fib_id, 
                             u32 tx_fib_id,
                             u32 label_host_byte_order, 
                             int s_bit, int next_index, int is_add);

int vnet_mpls_add_del_encap (ip4_address_t *dest, u32 fib_id, 
                             u32 *labels_host_byte_order,
                             u32 policy_tunnel_index,
                             int no_dst_hash, u32 * indexp, int is_add);

int vnet_mpls_policy_tunnel_add_rewrite (mpls_main_t * mm, 
                                         mpls_encap_t * e, 
                                         u32 policy_tunnel_index);
typedef struct {
  u32 lookup_miss;

  /* Tunnel-id / index in tunnel vector */
  u32 tunnel_id;

  /* mpls encap index */
  u32 mpls_encap_index;

  /* pkt length */
  u32 length;

  /* tunnel ip4 addresses */
  ip4_address_t src;
  ip4_address_t dst;
} mpls_gre_tx_trace_t;

u8 * format_mpls_gre_tx_trace (u8 * s, va_list * args);
u8 * format_mpls_gre_header (u8 * s, va_list * args);

#define foreach_mpls_input_next			\
_(DROP, "error-drop")                           \
_(IP4_INPUT, "ip4-input")                       \
_(L2_OUTPUT, "l2-output")

typedef enum {
#define _(s,n) MPLS_INPUT_NEXT_##s,
  foreach_mpls_input_next
#undef _
  MPLS_INPUT_N_NEXT,
} mpls_input_next_t;


typedef struct {
  u32 lookup_miss;

  /* Tunnel-id / index in tunnel vector */
  u32 tunnel_id;

  /* output interface */
  u32 tx_sw_if_index;

  /* mpls encap index */
  u32 mpls_encap_index;

  /* pkt length */
  u32 length;

  u8 dst[6];
} mpls_eth_tx_trace_t;

u8 * format_mpls_eth_tx_trace (u8 * s, va_list * args);

#endif /* included_vnet_mpls_gre_h */