summaryrefslogtreecommitdiffstats
path: root/src/plugins/linux-cp/lcp_api.c
blob: 638d9f796d12e70dd60e5faf89a1de85b75da04e (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
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
/*
 * Copyright 2020 Rubicon Communications, LLC.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <sys/socket.h>
#include <linux/if.h>

#include <vnet/vnet.h>
#include <vnet/plugin/plugin.h>

#include <vlibapi/api.h>
#include <vlibmemory/api.h>
#include <vpp/app/version.h>
#include <vnet/format_fns.h>

#include <linux-cp/lcp_interface.h>
#include <linux-cp/lcp.api_enum.h>
#include <linux-cp/lcp.api_types.h>

static u16 lcp_msg_id_base;
#define REPLY_MSG_ID_BASE lcp_msg_id_base
#include <vlibapi/api_helper_macros.h>

static lip_host_type_t
api_decode_host_type (vl_api_lcp_itf_host_type_t type)
{
  if (type == LCP_API_ITF_HOST_TUN)
    return LCP_ITF_HOST_TUN;

  return LCP_ITF_HOST_TAP;
}

static vl_api_lcp_itf_host_type_t
api_encode_host_type (lip_host_type_t type)
{
  if (type == LCP_ITF_HOST_TUN)
    return LCP_API_ITF_HOST_TUN;

  return LCP_API_ITF_HOST_TAP;
}

static int
vl_api_lcp_itf_pair_add (u32 phy_sw_if_index, lip_host_type_t lip_host_type,
			 u8 *mp_host_if_name, size_t sizeof_host_if_name,
			 u8 *mp_namespace, size_t sizeof_mp_namespace,
			 u32 *host_sw_if_index_p)
{
  u8 *host_if_name, *netns;
  int host_len, netns_len, rv;

  host_if_name = netns = 0;

  /* lcp_itf_pair_create expects vec of u8 */
  host_len = clib_strnlen ((char *) mp_host_if_name, sizeof_host_if_name - 1);
  vec_add (host_if_name, mp_host_if_name, host_len);
  vec_add1 (host_if_name, 0);

  netns_len = clib_strnlen ((char *) mp_namespace, sizeof_mp_namespace - 1);
  vec_add (netns, mp_namespace, netns_len);
  vec_add1 (netns, 0);

  rv = lcp_itf_pair_create (phy_sw_if_index, host_if_name, lip_host_type,
			    netns, host_sw_if_index_p);

  vec_free (host_if_name);
  vec_free (netns);

  return rv;
}

static void
vl_api_lcp_itf_pair_add_del_t_handler (vl_api_lcp_itf_pair_add_del_t *mp)
{
  u32 phy_sw_if_index;
  vl_api_lcp_itf_pair_add_del_reply_t *rmp;
  lip_host_type_t lip_host_type;
  int rv;

  VALIDATE_SW_IF_INDEX_END (mp);

  phy_sw_if_index = mp->sw_if_index;
  lip_host_type = api_decode_host_type (mp->host_if_type);
  if (mp->is_add)
    {
      rv = vl_api_lcp_itf_pair_add (
	phy_sw_if_index, lip_host_type, mp->host_if_name,
	sizeof (mp->host_if_name), mp->netns, sizeof (mp->netns), NULL);
    }
  else
    {
      rv = lcp_itf_pair_delete (phy_sw_if_index);
    }

  BAD_SW_IF_INDEX_LABEL;
  REPLY_MACRO_END (VL_API_LCP_ITF_PAIR_ADD_DEL_REPLY);
}

static void
vl_api_lcp_itf_pair_add_del_v2_t_handler (vl_api_lcp_itf_pair_add_del_v2_t *mp)
{
  u32 phy_sw_if_index, host_sw_if_index = ~0;
  vl_api_lcp_itf_pair_add_del_v2_reply_t *rmp;
  lip_host_type_t lip_host_type;
  int rv;

  VALIDATE_SW_IF_INDEX_END (mp);

  phy_sw_if_index = mp->sw_if_index;
  lip_host_type = api_decode_host_type (mp->host_if_type);
  if (mp->is_add)
    {
      rv = vl_api_lcp_itf_pair_add (phy_sw_if_index, lip_host_type,
				    mp->host_if_name,
				    sizeof (mp->host_if_name), mp->netns,
				    sizeof (mp->netns), &host_sw_if_index);
    }
  else
    {
      rv = lcp_itf_pair_delete (phy_sw_if_index);
    }

  BAD_SW_IF_INDEX_LABEL;
  REPLY_MACRO2_END (VL_API_LCP_ITF_PAIR_ADD_DEL_V2_REPLY,
		    { rmp->host_sw_if_index = host_sw_if_index; });
}

static void
send_lcp_itf_pair_details (index_t lipi, vl_api_registration_t *rp,
			   u32 context)
{
  vl_api_lcp_itf_pair_details_t *rmp;
  lcp_itf_pair_t *lcp_pair = lcp_itf_pair_get (lipi);

  REPLY_MACRO_DETAILS4_END (
    VL_API_LCP_ITF_PAIR_DETAILS, rp, context, ({
      rmp->phy_sw_if_index = lcp_pair->lip_phy_sw_if_index;
      rmp->host_sw_if_index = lcp_pair->lip_host_sw_if_index;
      rmp->vif_index = lcp_pair->lip_vif_index;
      rmp->host_if_type = api_encode_host_type (lcp_pair->lip_host_type);

      memcpy_s (rmp->host_if_name, sizeof (rmp->host_if_name),
		lcp_pair->lip_host_name, vec_len (lcp_pair->lip_host_name));
      rmp->host_if_name[vec_len (lcp_pair->lip_host_name)] = 0;

      memcpy_s (rmp->netns, sizeof (rmp->netns), lcp_pair->lip_namespace,
		vec_len (lcp_pair->lip_namespace));
      rmp->netns[vec_len (lcp_pair->lip_namespace)] = 0;
    }));
}

static void
vl_api_lcp_itf_pair_get_t_handler (vl_api_lcp_itf_pair_get_t *mp)
{
  vl_api_lcp_itf_pair_get_reply_t *rmp;
  i32 rv = 0;

  REPLY_AND_DETAILS_MACRO_END (
    VL_API_LCP_ITF_PAIR_GET_REPLY, lcp_itf_pair_pool,
    ({ send_lcp_itf_pair_details (cursor, rp, mp->context); }));
}

static void
vl_api_lcp_default_ns_set_t_handler (vl_api_lcp_default_ns_set_t *mp)
{
  vl_api_lcp_default_ns_set_reply_t *rmp;
  int rv;

  mp->netns[LCP_NS_LEN - 1] = 0;
  rv = lcp_set_default_ns (mp->netns);

  REPLY_MACRO (VL_API_LCP_DEFAULT_NS_SET_REPLY);
}

static void
vl_api_lcp_default_ns_get_t_handler (vl_api_lcp_default_ns_get_t *mp)
{
  vl_api_lcp_default_ns_get_reply_t *rmp;
  vl_api_registration_t *reg;
  char *ns;

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

  REPLY_MACRO_DETAILS2_END (VL_API_LCP_DEFAULT_NS_GET_REPLY, ({
			      ns = (char *) lcp_get_default_ns ();
			      if (ns)
				clib_strncpy ((char *) rmp->netns, ns,
					      LCP_NS_LEN - 1);
			    }));
}

static void
vl_api_lcp_itf_pair_replace_begin_t_handler (
  vl_api_lcp_itf_pair_replace_begin_t *mp)
{
  vl_api_lcp_itf_pair_replace_begin_reply_t *rmp;
  int rv;

  rv = lcp_itf_pair_replace_begin ();

  REPLY_MACRO (VL_API_LCP_ITF_PAIR_REPLACE_BEGIN_REPLY);
}

static void
vl_api_lcp_itf_pair_replace_end_t_handler (
  vl_api_lcp_itf_pair_replace_end_t *mp)
{
  vl_api_lcp_itf_pair_replace_end_reply_t *rmp;
  int rv = 0;

  rv = lcp_itf_pair_replace_end ();

  REPLY_MACRO (VL_API_LCP_ITF_PAIR_REPLACE_END_REPLY);
}

/*
 * Set up the API message handling tables
 */
#include <linux-cp/lcp.api.c>

static clib_error_t *
lcp_api_init (vlib_main_t *vm)
{
  /* Ask for a correctly-sized block of API message decode slots */
  lcp_msg_id_base = setup_message_id_table ();

  return (NULL);
}

VLIB_INIT_FUNCTION (lcp_api_init);

#include <vpp/app/version.h>
VLIB_PLUGIN_REGISTER () = {
  .version = VPP_BUILD_VER,
  .description = "Linux Control Plane - Interface Mirror",
  .default_disabled = 1,
};

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