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
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
|
/*
* 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.
*/
#include <vnet/vnet.h>
#include <vlibmemory/api.h>
#include <vnet/fib/fib_api.h>
#include <vnet/fib/fib_table.h>
#include <vnet/bier/bier_disp_table.h>
#include <vnet/dpo/ip_null_dpo.h>
#include <vnet/vnet_msg_enum.h>
#define vl_typedefs /* define message structures */
#include <vnet/vnet_all_api_h.h>
#undef vl_typedefs
#define vl_endianfun /* define message structures */
#include <vnet/vnet_all_api_h.h>
#undef vl_endianfun
/* instantiate all the print functions we know about */
#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
#define vl_printfun
#include <vnet/vnet_all_api_h.h>
#undef vl_printfun
#include <vlibapi/api_helper_macros.h>
int
fib_path_api_parse (const vl_api_fib_path_t *in,
fib_route_path_t *out)
{
fib_route_path_flags_t path_flags;
mpls_label_t next_hop_via_label;
int rv = 0, n_labels;
u8 ii;
path_flags = FIB_ROUTE_PATH_FLAG_NONE;
next_hop_via_label = ntohl (in->via_label);
memset(out, 0, sizeof(*out));
out->frp_sw_if_index = ~0;
out->frp_proto = in->afi;
// .frp_addr = (NULL == next_hop ? zero_addr : *next_hop),
out->frp_sw_if_index = ntohl(in->sw_if_index);
out->frp_fib_index = ntohl(in->table_id);
out->frp_weight = in->weight;
out->frp_preference = in->preference;
/*
* the special INVALID label meams we are not recursing via a
* label. Exp-null value is never a valid via-label so that
* also means it's not a via-label and means clients that set
* it to 0 by default get the expected behaviour
*/
if ((MPLS_LABEL_INVALID != next_hop_via_label) &&
(0 != next_hop_via_label))
{
out->frp_proto = DPO_PROTO_MPLS;
out->frp_local_label = next_hop_via_label;
out->frp_eos = MPLS_NON_EOS;
}
n_labels = in->n_labels;
if (n_labels == 0)
;
else
{
vec_validate (out->frp_label_stack, n_labels - 1);
for (ii = 0; ii < n_labels; ii++)
{
out->frp_label_stack[ii].fml_value =
ntohl(in->label_stack[ii].label);
out->frp_label_stack[ii].fml_ttl =
in->label_stack[ii].ttl;
out->frp_label_stack[ii].fml_exp =
in->label_stack[ii].exp;
out->frp_label_stack[ii].fml_mode =
(in->label_stack[ii].is_uniform ?
FIB_MPLS_LSP_MODE_UNIFORM :
FIB_MPLS_LSP_MODE_PIPE);
}
}
if (in->is_dvr)
path_flags |= FIB_ROUTE_PATH_DVR;
if (in->is_resolve_host)
path_flags |= FIB_ROUTE_PATH_RESOLVE_VIA_HOST;
if (in->is_resolve_attached)
path_flags |= FIB_ROUTE_PATH_RESOLVE_VIA_ATTACHED;
/* if (in->is_interface_rx) */
/* path_flags |= FIB_ROUTE_PATH_INTF_RX; */
/* if (in->is_rpf_id) */
/* path_flags |= FIB_ROUTE_PATH_RPF_ID; */
if (in->is_source_lookup)
path_flags |= FIB_ROUTE_PATH_SOURCE_LOOKUP;
if (in->is_udp_encap)
{
path_flags |= FIB_ROUTE_PATH_UDP_ENCAP;
out->frp_udp_encap_id = ntohl(in->next_hop_id);
}
else
{
if (DPO_PROTO_IP4 == in->afi)
{
clib_memcpy (&out->frp_addr.ip4,
in->next_hop,
sizeof (out->frp_addr.ip4));
}
else if (DPO_PROTO_IP6 == in->afi)
{
clib_memcpy (&out->frp_addr.ip6,
in->next_hop,
sizeof (out->frp_addr.ip6));
}
if (ip46_address_is_zero(&out->frp_addr))
{
if (DPO_PROTO_BIER == in->afi)
{
index_t bdti;
bdti = bier_disp_table_find(ntohl(in->table_id));
if (INDEX_INVALID != bdti)
{
out->frp_fib_index = bdti;
out->frp_proto = DPO_PROTO_BIER;
}
else
{
rv = VNET_API_ERROR_NO_SUCH_FIB;
}
}
else if (out->frp_sw_if_index == ~0 &&
out->frp_fib_index != ~0)
{
path_flags |= FIB_ROUTE_PATH_DEAG;
}
}
}
out->frp_flags = path_flags;
return (rv);
}
void
fib_prefix_to_api (const fib_prefix_t *pfx,
u8 address[16],
u8 *length,
u8 *is_ip6)
{
*length = pfx->fp_len;
*is_ip6 = (FIB_PROTOCOL_IP6 == pfx->fp_proto ? 1 : 0);
if (FIB_PROTOCOL_IP6 == pfx->fp_proto)
{
memcpy (address, &pfx->fp_addr.ip6, sizeof (pfx->fp_addr.ip6));
}
else
{
memcpy (address, &pfx->fp_addr.ip4, sizeof (pfx->fp_addr.ip4));
}
}
static void
fib_api_path_copy_next_hop (const fib_route_path_encode_t * api_rpath, void *fp_arg)
{
int is_ip4;
vl_api_fib_path_t *fp = (vl_api_fib_path_t *) fp_arg;
if (api_rpath->rpath.frp_proto == DPO_PROTO_IP4)
fp->afi = IP46_TYPE_IP4;
else if (api_rpath->rpath.frp_proto == DPO_PROTO_IP6)
fp->afi = IP46_TYPE_IP6;
else
{
is_ip4 = ip46_address_is_ip4 (&api_rpath->rpath.frp_addr);
if (is_ip4)
fp->afi = IP46_TYPE_IP4;
else
fp->afi = IP46_TYPE_IP6;
}
if (fp->afi == IP46_TYPE_IP4)
memcpy (fp->next_hop, &api_rpath->rpath.frp_addr.ip4,
sizeof (api_rpath->rpath.frp_addr.ip4));
else
memcpy (fp->next_hop, &api_rpath->rpath.frp_addr.ip6,
sizeof (api_rpath->rpath.frp_addr.ip6));
}
void
fib_api_path_encode (const fib_route_path_encode_t * api_rpath,
vl_api_fib_path_t *out)
{
memset (out, 0, sizeof (*out));
switch (api_rpath->dpo.dpoi_type)
{
case DPO_RECEIVE:
out->is_local = true;
break;
case DPO_DROP:
out->is_drop = true;
break;
case DPO_IP_NULL:
switch (ip_null_dpo_get_action(api_rpath->dpo.dpoi_index))
{
case IP_NULL_ACTION_NONE:
out->is_drop = true;
break;
case IP_NULL_ACTION_SEND_ICMP_UNREACH:
out->is_unreach = true;
break;
case IP_NULL_ACTION_SEND_ICMP_PROHIBIT:
out->is_prohibit = true;
break;
default:
break;
}
break;
default:
break;
}
out->weight = api_rpath->rpath.frp_weight;
out->preference = api_rpath->rpath.frp_preference;
out->sw_if_index = htonl (api_rpath->rpath.frp_sw_if_index);
out->afi = api_rpath->rpath.frp_proto;
fib_api_path_copy_next_hop (api_rpath, out);
if (0 != api_rpath->rpath.frp_fib_index)
{
if ((DPO_PROTO_IP6 == api_rpath->rpath.frp_proto) ||
(DPO_PROTO_IP4 == api_rpath->rpath.frp_proto))
{
fib_table_t *fib;
fib = fib_table_get (api_rpath->rpath.frp_fib_index,
dpo_proto_to_fib(api_rpath->rpath.frp_proto));
out->table_id = htonl (fib->ft_table_id);
}
}
if (api_rpath->rpath.frp_flags & FIB_ROUTE_PATH_DVR)
{
out->is_dvr = 1;
}
if (api_rpath->rpath.frp_flags & FIB_ROUTE_PATH_UDP_ENCAP)
{
out->is_udp_encap = 1;
out->next_hop_id = api_rpath->rpath.frp_udp_encap_id;
}
}
fib_protocol_t
fib_proto_from_api_address_family (int af)
{
switch (clib_net_to_host_u32 (af))
{
case ADDRESS_IP4:
return (FIB_PROTOCOL_IP4);
case ADDRESS_IP6:
return (FIB_PROTOCOL_IP6);
}
ASSERT(0);
return (FIB_PROTOCOL_IP4);
}
int
fib_proto_to_api_address_family (fib_protocol_t fproto)
{
switch (fproto)
{
case FIB_PROTOCOL_IP4:
return (clib_net_to_host_u32 (ADDRESS_IP4));
case FIB_PROTOCOL_IP6:
return (clib_net_to_host_u32 (ADDRESS_IP6));
default:
break;
}
ASSERT(0);
return (clib_net_to_host_u32 (ADDRESS_IP4));
}
|
