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
|
/*
* srv6_end_m_gtp6_d_di_di.c
*
* Copyright (c) 2019 Arrcus Inc 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 <vnet/adj/adj.h>
#include <vnet/plugin/plugin.h>
#include <vpp/app/version.h>
#include <srv6-mobile/mobile.h>
srv6_end_main_v6_decap_di_t srv6_end_main_v6_decap_di;
static void
clb_dpo_lock_srv6_end_m_gtp6_d_di (dpo_id_t * dpo)
{
}
static void
clb_dpo_unlock_srv6_end_m_gtp6_d_di (dpo_id_t * dpo)
{
}
static u8 *
clb_dpo_format_srv6_end_m_gtp6_d_di (u8 * s, va_list * args)
{
index_t index = va_arg (*args, index_t);
CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
return (format (s, "SR: dynamic_proxy_index:[%u]", index));
}
const static dpo_vft_t dpo_vft = {
.dv_lock = clb_dpo_lock_srv6_end_m_gtp6_d_di,
.dv_unlock = clb_dpo_unlock_srv6_end_m_gtp6_d_di,
.dv_format = clb_dpo_format_srv6_end_m_gtp6_d_di,
};
const static char *const srv6_end_m_gtp6_d_di_nodes[] = {
"srv6-end-m-gtp6-d-di",
NULL,
};
const static char *const *const dpo_nodes[DPO_PROTO_NUM] = {
[DPO_PROTO_IP6] = srv6_end_m_gtp6_d_di_nodes,
};
static u8 fn_name[] = "SRv6-End.M.GTP6.D.DI-plugin";
static u8 keyword_str[] = "end.m.gtp6.d.di";
static u8 def_str[] =
"Endpoint function with drop-in dencapsulation for IPv6/GTP tunnel";
static u8 param_str[] = "<sr-prefix>/<sr-prefixlen> [nhtype <nhtype>]";
static u8 *
clb_format_srv6_end_m_gtp6_d_di (u8 * s, va_list * args)
{
srv6_end_gtp6_d_param_t *ls_mem = va_arg (*args, void *);
s = format (s, "SRv6 End gtp6.d Drop-in\n\t");
s =
format (s, "SR Prefix: %U/%d", format_ip6_address, &ls_mem->sr_prefix,
ls_mem->sr_prefixlen);
if (ls_mem->nhtype != SRV6_NHTYPE_NONE)
{
if (ls_mem->nhtype == SRV6_NHTYPE_IPV4)
s = format (s, ", NHType IPv4\n");
else if (ls_mem->nhtype == SRV6_NHTYPE_IPV6)
s = format (s, ", NHType IPv6\n");
else if (ls_mem->nhtype == SRV6_NHTYPE_NON_IP)
s = format (s, ", NHType Non-IP\n");
else
s = format (s, ", NHType Unknow(%d)\n", ls_mem->nhtype);
}
else
s = format (s, "\n");
return s;
}
void
alloc_param_srv6_end_m_gtp6_di (void **plugin_mem_p, const void *sr_prefix,
const u32 sr_prefixlen, const u8 nhtype)
{
srv6_end_gtp6_d_param_t *ls_mem;
ls_mem = clib_mem_alloc (sizeof *ls_mem);
clib_memset (ls_mem, 0, sizeof *ls_mem);
*plugin_mem_p = ls_mem;
ls_mem->sr_prefixlen = sr_prefixlen;
memcpy (&ls_mem->sr_prefix, sr_prefix, sizeof (ip6_address_t));
ls_mem->nhtype = nhtype;
}
static uword
clb_unformat_srv6_end_m_gtp6_d_di (unformat_input_t * input, va_list * args)
{
void **plugin_mem_p = va_arg (*args, void **);
ip6_address_t sr_prefix;
u32 sr_prefixlen = 0;
u8 nhtype;
if (unformat (input, "end.m.gtp6.d.di %U/%d nhtype ipv4",
unformat_ip6_address, &sr_prefix, &sr_prefixlen))
{
nhtype = SRV6_NHTYPE_IPV4;
}
else if (unformat (input, "end.m.gtp6.d.di %U/%d nhtype ipv6",
unformat_ip6_address, &sr_prefix, &sr_prefixlen))
{
nhtype = SRV6_NHTYPE_IPV6;
}
else if (unformat (input, "end.m.gtp6.d.di %U/%d nhtype non-ip",
unformat_ip6_address, &sr_prefix, &sr_prefixlen))
{
nhtype = SRV6_NHTYPE_NON_IP;
}
else if (unformat (input, "end.m.gtp6.d.di %U/%d",
unformat_ip6_address, &sr_prefix, &sr_prefixlen))
{
nhtype = SRV6_NHTYPE_NONE;
}
else
{
return 0;
}
alloc_param_srv6_end_m_gtp6_di (plugin_mem_p, &sr_prefix, sr_prefixlen,
nhtype);
return 1;
}
static int
clb_creation_srv6_end_m_gtp6_d_di (ip6_sr_localsid_t * localsid)
{
return 0;
}
static int
clb_removal_srv6_end_m_gtp6_d_di (ip6_sr_localsid_t * localsid)
{
srv6_end_gtp6_d_param_t *ls_mem;
ls_mem = localsid->plugin_mem;
clib_mem_free (ls_mem);
return 0;
}
static clib_error_t *
srv6_end_m_gtp6_d_di_init (vlib_main_t * vm)
{
srv6_end_main_v6_decap_di_t *sm = &srv6_end_main_v6_decap_di;
ip6srv_combo_header_t *ip6;
dpo_type_t dpo_type;
vlib_node_t *node;
int rc;
sm->vlib_main = vm;
sm->vnet_main = vnet_get_main ();
node = vlib_get_node_by_name (vm, (u8 *) "srv6-end-m-gtp6-d-di");
sm->end_m_gtp6_d_di_node_index = node->index;
node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
sm->error_node_index = node->index;
ip6 = &sm->cache_hdr;
clib_memset_u8 (ip6, 0, sizeof (ip6srv_combo_header_t));
// IPv6 header (default)
ip6->ip.ip_version_traffic_class_and_flow_label = 0x60;
ip6->ip.hop_limit = 64;
ip6->ip.protocol = IPPROTO_IPV6_ROUTE;
// SR header (default)
ip6->sr.type = 4;
dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes);
rc = sr_localsid_register_function (vm, fn_name, keyword_str, def_str, param_str, 128, //prefix len
&dpo_type,
clb_format_srv6_end_m_gtp6_d_di,
clb_unformat_srv6_end_m_gtp6_d_di,
clb_creation_srv6_end_m_gtp6_d_di,
clb_removal_srv6_end_m_gtp6_d_di);
if (rc < 0)
clib_error_return (0, "SRv6 Endpoint GTP6.D.DI LocalSID function"
"couldn't be registered");
return 0;
}
VNET_FEATURE_INIT (srv6_end_m_gtp6_d_di, static) =
{
.arc_name = "ip6-unicast",
.node_name = "srv6-end-m-gtp6-d-di",
.runs_before = 0,
};
VLIB_INIT_FUNCTION (srv6_end_m_gtp6_d_di_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
