summaryrefslogtreecommitdiffstats
path: root/src/dpi_api.c
blob: cfb5262a52f5724dc90d59d2c912b27d2c702d3c (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
/*
 *------------------------------------------------------------------
 * Copyright (c) 2018 Intel, Travelping 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/interface.h>
#include <vnet/api_errno.h>
#include <vnet/feature/feature.h>
#include <vnet/fib/fib_table.h>

#include <vppinfra/byte_order.h>
#include <vlibmemory/api.h>

#include "dpi.h"


#define vl_msg_id(n,h) n,
typedef enum
{
#include "dpi.api.h"
  /* We'll want to know how many messages IDs we need... */
  VL_MSG_FIRST_AVAILABLE,
} vl_msg_id_t;
#undef vl_msg_id

/* define message structures */
#define vl_typedefs
#include "dpi.api.h"
#undef vl_typedefs

/* define generated endian-swappers */
#define vl_endianfun
#include "dpi.api.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 "dpi.api.h"
#undef vl_printfun

/* Get the API version number */
#define vl_api_version(n,v) static u32 api_version=(v);
#include "dpi.api.h"
#undef vl_api_version

#define vl_msg_name_crc_list
#include "dpi.api.h"
#undef vl_msg_name_crc_list

#define REPLY_MSG_ID_BASE dm->msg_id_base
#include <vlibapi/api_helper_macros.h>

#define foreach_dpi_plugin_api_msg                          \
_(DPI_FLOW_ADD_DEL, dpi_flow_add_del)


/* API message handler */
static void
vl_api_dpi_flow_add_del_t_handler (vl_api_dpi_flow_add_del_t * mp)
{
  vl_api_dpi_flow_add_del_reply_t *rmp = NULL;
  dpi_main_t *dm = &dpi_main;
  int rv = 0;
  u32 fib_index;
  u32 flow_id = ~0;

  fib_index = fib_table_find (fib_ip_proto (mp->is_ipv6), ntohl (mp->vrf_id));
  if (fib_index == ~0)
    {
      rv = VNET_API_ERROR_NO_SUCH_FIB;
      goto out;
    }

  dpi_add_del_flow_args_t a = {
    .is_add = mp->is_add,
    .is_ipv6 = mp->is_ipv6,
    .src_ip = to_ip46 (mp->is_ipv6, mp->src_ip),
    .dst_ip = to_ip46 (mp->is_ipv6, mp->dst_ip),
    .src_port = ntohs (mp->src_port),
    .dst_port = ntohs (mp->dst_port),
    .protocol = mp->protocol,
    .fib_index = fib_index,
  };

  /* Check src ip and dst ip are different */
  if (ip46_address_cmp (&a.dst_ip, &a.src_ip) == 0)
    {
      rv = VNET_API_ERROR_SAME_SRC_DST;
      goto out;
    }

  rv = dpi_flow_add_del (&a, &flow_id);

out:
  /* *INDENT-OFF* */
  REPLY_MACRO2(VL_API_DPI_FLOW_ADD_DEL_REPLY,
  ({
    rmp->flow_id = htonl (flow_id);
  }));
  /* *INDENT-ON* */
}

static clib_error_t *
dpi_api_hookup (vlib_main_t * vm)
{
  dpi_main_t *dm = &dpi_main;

  u8 *name = format (0, "dpi_%08x%c", api_version, 0);
  dm->msg_id_base = vl_msg_api_get_msg_ids
    ((char *) name, VL_MSG_FIRST_AVAILABLE);

#define _(N,n)                                                  \
    vl_msg_api_set_handlers((VL_API_##N + dm->msg_id_base),     \
                           #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_dpi_plugin_api_msg;
#undef _

  /* Add our API messages to the global name_crc hash table */
  dm->msg_id_base = setup_message_id_table ();

  return 0;
}

VLIB_API_INIT_FUNCTION (dpi_api_hookup);

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