aboutsummaryrefslogtreecommitdiffstats
path: root/src/vnet/udp/udp_api.c
blob: 43a39b82ef02ca2b9ebdf89d02b024637010085c (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
/*
 * Copyright (c) 2018 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/udp/udp_encap.h>
#include <vnet/fib/fib_table.h>
#include <vnet/ip/ip_types_api.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>


#define foreach_udp_api_msg            \
_(UDP_ENCAP_DEL, udp_encap_del)        \
_(UDP_ENCAP_ADD, udp_encap_add)        \
_(UDP_ENCAP_DUMP, udp_encap_dump)

static void
send_udp_encap_details (const udp_encap_t * ue, vl_api_registration_t * reg,
			u32 context)
{
  vl_api_udp_encap_details_t *mp;

  mp = vl_msg_api_alloc (sizeof (*mp));
  memset (mp, 0, sizeof (*mp));
  mp->_vl_msg_id = ntohs (VL_API_UDP_ENCAP_DETAILS);
  mp->context = context;

  if (FIB_PROTOCOL_IP4 == ue->ue_ip_proto)
    {
      clib_memcpy (&mp->udp_encap.src_ip.un.ip4,
		   &ue->ue_hdrs.ip4.ue_ip4.src_address, 4);
      clib_memcpy (&mp->udp_encap.dst_ip.un.ip4,
		   &ue->ue_hdrs.ip4.ue_ip4.dst_address, 4);
      mp->udp_encap.dst_ip.af = clib_host_to_net_u32 (ADDRESS_IP4);
      mp->udp_encap.src_ip.af = clib_host_to_net_u32 (ADDRESS_IP4);

      /* ports aren't byte swapped because they are stored in network
       * byte order */
      mp->udp_encap.src_port = ue->ue_hdrs.ip4.ue_udp.src_port;
      mp->udp_encap.dst_port = ue->ue_hdrs.ip4.ue_udp.dst_port;
    }
  else
    {
      clib_memcpy (&mp->udp_encap.src_ip.un.ip6,
		   &ue->ue_hdrs.ip6.ue_ip6.src_address, 16);
      clib_memcpy (&mp->udp_encap.dst_ip.un.ip6,
		   &ue->ue_hdrs.ip6.ue_ip6.dst_address, 16);
      mp->udp_encap.dst_ip.af = clib_host_to_net_u32 (ADDRESS_IP6);
      mp->udp_encap.src_ip.af = clib_host_to_net_u32 (ADDRESS_IP6);

      /* ports aren't byte swapped because they are stored in network
       * byte order */
      mp->udp_encap.src_port = ue->ue_hdrs.ip6.ue_udp.src_port;
      mp->udp_encap.dst_port = ue->ue_hdrs.ip6.ue_udp.dst_port;
    }

  mp->udp_encap.table_id =
    htonl (fib_table_get_table_id (ue->ue_fib_index, ue->ue_ip_proto));
  mp->udp_encap.id = htonl (ue->ue_id);

  vl_api_send_msg (reg, (u8 *) mp);
}

static void
vl_api_udp_encap_dump_t_handler (vl_api_udp_encap_dump_t * mp,
				 vlib_main_t * vm)
{
  vl_api_registration_t *reg;
  udp_encap_t *ue;

  reg = vl_api_client_index_to_registration (mp->client_index);
  if (!reg)
    return;

  /* *INDENT-OFF* */
  pool_foreach(ue, udp_encap_pool,
  ({
    send_udp_encap_details(ue, reg, mp->context);
  }));
  /* *INDENT-ON* */
}

static void
vl_api_udp_encap_add_t_handler (vl_api_udp_encap_add_t * mp, vlib_main_t * vm)
{
  vl_api_udp_encap_add_reply_t *rmp;
  ip46_address_t src_ip, dst_ip;
  u32 fib_index, table_id, ue_id;
  fib_protocol_t fproto;
  ip46_type_t itype;
  int rv = 0;

  ue_id = ntohl (mp->udp_encap.id);
  table_id = ntohl (mp->udp_encap.table_id);

  itype = ip_address_decode (&mp->udp_encap.src_ip, &src_ip);
  itype = ip_address_decode (&mp->udp_encap.dst_ip, &dst_ip);
  fproto = fib_proto_from_ip46 (itype);
  fib_index = fib_table_find (fproto, table_id);

  if (~0 == fib_index)
    {
      rv = VNET_API_ERROR_NO_SUCH_TABLE;
      goto done;
    }

  udp_encap_add_and_lock (ue_id, fproto, fib_index,
			  &src_ip, &dst_ip,
			  ntohs (mp->udp_encap.src_port),
			  ntohs (mp->udp_encap.dst_port),
			  UDP_ENCAP_FIXUP_NONE);

done:
  REPLY_MACRO (VL_API_UDP_ENCAP_ADD_REPLY);
}

static void
vl_api_udp_encap_del_t_handler (vl_api_udp_encap_del_t * mp, vlib_main_t * vm)
{
  vl_api_udp_encap_del_reply_t *rmp;
  int rv = 0;

  udp_encap_unlock (ntohl (mp->id));

  REPLY_MACRO (VL_API_UDP_ENCAP_DEL_REPLY);
}

#define vl_msg_name_crc_list
#include <vnet/udp/udp.api.h>
#undef vl_msg_name_crc_list

static void
setup_message_id_table (api_main_t * am)
{
#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
  foreach_vl_msg_name_crc_udp;
#undef _
}

static clib_error_t *
udp_api_hookup (vlib_main_t * vm)
{
  api_main_t *am = &api_main;

#define _(N,n)                                                  \
    vl_msg_api_set_handlers(VL_API_##N, #n,                     \
                           vl_api_##n##_t_handler,              \
                           vl_noop_handler,                     \
                           vl_api_##n##_t_endian,               \
                           vl_api_##n##_t_print,                \
                           sizeof(vl_api_##n##_t), 1);
  foreach_udp_api_msg;
#undef _

  /*
   * Set up the (msg_name, crc, message-id) table
   */
  setup_message_id_table (am);

  return 0;
}

VLIB_API_INIT_FUNCTION (udp_api_hookup);

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