summaryrefslogtreecommitdiffstats
path: root/src/plugins/srv6-mobile/gtp4_e.c
blob: 73a91f8592d790aee84b801611de06852139f050 (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
/*
 * srv6_end_m_gtp4_e.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_v4_t srv6_end_main_v4;

static void
clb_dpo_lock_srv6_end_m_gtp4_e (dpo_id_t * dpo)
{
}

static void
clb_dpo_unlock_srv6_end_m_gtp4_e (dpo_id_t * dpo)
{
}

static u8 *
clb_dpo_format_srv6_end_m_gtp4_e (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_gtp4_e,
  .dv_unlock = clb_dpo_unlock_srv6_end_m_gtp4_e,
  .dv_format = clb_dpo_format_srv6_end_m_gtp4_e,
};

const static char *const srv6_end_m_gtp4_e_nodes[] = {
  "srv6-end-m-gtp4-e",
  NULL,
};

const static char *const *const dpo_nodes[DPO_PROTO_NUM] = {
  [DPO_PROTO_IP6] = srv6_end_m_gtp4_e_nodes,
};

static u8 fn_name[] = "SRv6-End.M.GTP4.E-plugin";
static u8 keyword_str[] = "end.m.gtp4.e";
static u8 def_str[] =
  "Endpoint function with encapsulation for IPv4/GTP tunnel";
static u8 param_str[] = "";

static u8 *
clb_format_srv6_end_m_gtp4_e (u8 * s, va_list * args)
{
  srv6_end_gtp4_param_t *ls_mem = va_arg (*args, void *);

  s = format (s, "SRv6 End gtp4.e\n\t");

  s = format (s, "IPv4 address position: %d\n", ls_mem->v4src_position);

  return s;
}

static uword
clb_unformat_srv6_end_m_gtp4_e (unformat_input_t * input, va_list * args)
{
  void **plugin_mem_p = va_arg (*args, void **);
  srv6_end_gtp4_param_t *ls_mem;
  u32 v4src_position;

  if (!unformat (input, "end.m.gtp4.e v4src_position %d", &v4src_position))
    return 0;

  ls_mem = clib_mem_alloc_aligned_at_offset (sizeof *ls_mem, 0, 0, 1);
  clib_memset (ls_mem, 0, sizeof *ls_mem);
  *plugin_mem_p = ls_mem;

  ls_mem->v4src_position = v4src_position;

  return 1;
}

static int
clb_creation_srv6_end_m_gtp4_e (ip6_sr_localsid_t * localsid)
{
  return 0;
}

static int
clb_removal_srv6_end_m_gtp4_e (ip6_sr_localsid_t * localsid)
{
  srv6_end_gtp4_param_t *ls_mem;

  ls_mem = localsid->plugin_mem;

  clib_mem_free (ls_mem);

  return 0;
}

static clib_error_t *
srv6_end_m_gtp4_e_init (vlib_main_t * vm)
{
  srv6_end_main_v4_t *sm = &srv6_end_main_v4;
  ip4_header_t *ip4 = &sm->cache_hdr.ip4;
  udp_header_t *udp = &sm->cache_hdr.udp;
  gtpu_header_t *gtpu = &sm->cache_hdr.gtpu;
  dpo_type_t dpo_type;
  vlib_node_t *node;
  u32 rc;

  sm->vlib_main = vm;
  sm->vnet_main = vnet_get_main ();

  node = vlib_get_node_by_name (vm, (u8 *) "srv6-end-m-gtp4-e");
  sm->end_m_gtp4_e_node_index = node->index;

  node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
  sm->error_node_index = node->index;

  sm->dst_p_len = 32;
  sm->src_p_len = 64;

  // clear the pre cached packet
  clib_memset_u8 (ip4, 0, sizeof (ip4_gtpu_header_t));

  // set defaults
  ip4->ip_version_and_header_length = 0x45;
  ip4->protocol = IP_PROTOCOL_UDP;
  ip4->ttl = 64;

  udp->dst_port = clib_host_to_net_u16 (SRV6_GTP_UDP_DST_PORT);

  gtpu->ver_flags = GTPU_V1_VER | GTPU_PT_GTP;
  gtpu->type = GTPU_TYPE_GTPU;
  //

  dpo_type = dpo_register_new_type (&dpo_vft, dpo_nodes);

  rc = sr_localsid_register_function (vm, fn_name, keyword_str, def_str, param_str, 32,	//prefix len
				      &dpo_type,
				      clb_format_srv6_end_m_gtp4_e,
				      clb_unformat_srv6_end_m_gtp4_e,
				      clb_creation_srv6_end_m_gtp4_e,
				      clb_removal_srv6_end_m_gtp4_e);
  if (rc < 0)
    clib_error_return (0, "SRv6 Endpoint GTP4.E LocalSID function"
		       "couldn't be registered");
  return 0;
}

/* *INDENT-OFF* */
VNET_FEATURE_INIT (srv6_end_m_gtp4_e, static) =
{
  .arc_name = "ip6-unicast",
  .node_name = "srv6-end-m-gtp4-e",
  .runs_before = 0,
};

VLIB_INIT_FUNCTION (srv6_end_m_gtp4_e_init);

VLIB_PLUGIN_REGISTER () = {
  .version = VPP_BUILD_VER,
  .description = "SRv6 GTP Endpoint Functions",
};
/* *INDENT-ON* */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */