blob: 40ff22eaeaa6ff940a95ee4c29db1b53cb720dff [file] [log] [blame]
Damjan Marion8389fb92017-10-13 18:29:53 +02001/*
2 *------------------------------------------------------------------
3 * tap_api.c - vnet tap device driver API support
4 *
5 * Copyright (c) 2017 Cisco and/or its affiliates.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at:
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *------------------------------------------------------------------
18 */
19
20#include <vnet/vnet.h>
21#include <vlibmemory/api.h>
22
23#include <vnet/interface.h>
24#include <vnet/api_errno.h>
25#include <vnet/ethernet/ethernet.h>
26#include <vnet/ip/ip.h>
27
28#include <vnet/vnet_msg_enum.h>
29
30#define vl_typedefs /* define message structures */
31#include <vnet/vnet_all_api_h.h>
32#undef vl_typedefs
33
34#define vl_endianfun /* define message structures */
35#include <vnet/vnet_all_api_h.h>
36#undef vl_endianfun
37
38/* instantiate all the print functions we know about */
39#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
40#define vl_printfun
41#include <vnet/vnet_all_api_h.h>
42#undef vl_printfun
43
44#include <vlibapi/api_helper_macros.h>
Damjan Marionc99b4cd2017-12-04 15:25:58 +010045#include <vnet/devices/tap/tap.h>
Damjan Marion8389fb92017-10-13 18:29:53 +020046
47#define foreach_tapv2_api_msg \
48_(TAP_CREATE_V2, tap_create_v2) \
49_(TAP_DELETE_V2, tap_delete_v2) \
50_(SW_INTERFACE_TAP_V2_DUMP, sw_interface_tap_v2_dump)
51
52static void
53vl_api_tap_create_v2_t_handler (vl_api_tap_create_v2_t * mp)
54{
Jerome Tollet0b061112018-06-04 16:40:26 +010055 vnet_main_t *vnm = vnet_get_main ();
Damjan Marion8389fb92017-10-13 18:29:53 +020056 vlib_main_t *vm = vlib_get_main ();
Damjan Marion8389fb92017-10-13 18:29:53 +020057 vl_api_tap_create_v2_reply_t *rmp;
Florin Coras6c4dae22018-01-09 06:39:23 -080058 vl_api_registration_t *reg;
Damjan Marion8389fb92017-10-13 18:29:53 +020059 tap_create_if_args_t _a, *ap = &_a;
60
Dave Barachb7b92992018-10-17 10:38:51 -040061 clib_memset (ap, 0, sizeof (*ap));
Damjan Marion8389fb92017-10-13 18:29:53 +020062
Steven9e635692018-03-01 09:36:01 -080063 ap->id = ntohl (mp->id);
Damjan Marion8389fb92017-10-13 18:29:53 +020064 if (!mp->use_random_mac)
65 {
Damjan Marion2df39092017-12-04 20:03:37 +010066 clib_memcpy (ap->mac_addr, mp->mac_address, 6);
67 ap->mac_addr_set = 1;
Damjan Marion8389fb92017-10-13 18:29:53 +020068 }
Milan Lenco2aef64f2017-12-05 12:18:15 +010069 ap->rx_ring_sz = ntohs (mp->rx_ring_sz);
70 ap->tx_ring_sz = ntohs (mp->tx_ring_sz);
Damjan Marion8389fb92017-10-13 18:29:53 +020071 ap->sw_if_index = (u32) ~ 0;
Damjan Marion8389fb92017-10-13 18:29:53 +020072
Damjan Marion2df39092017-12-04 20:03:37 +010073 if (mp->host_if_name_set)
74 ap->host_if_name = mp->host_if_name;
75
76 if (mp->host_mac_addr_set)
77 {
78 clib_memcpy (ap->host_mac_addr, mp->host_mac_addr, 6);
79 ap->mac_addr_set = 1;
80 }
81
Damjan Marion91c6ef72017-12-01 13:34:24 +010082 if (mp->host_namespace_set)
83 ap->host_namespace = mp->host_namespace;
84
85 if (mp->host_bridge_set)
86 ap->host_bridge = mp->host_bridge;
87
88 if (mp->host_ip4_addr_set)
89 {
90 clib_memcpy (&ap->host_ip4_addr.as_u8, mp->host_ip4_addr, 4);
91 ap->host_ip4_prefix_len = mp->host_ip4_prefix_len;
92 }
93
94 if (mp->host_ip6_addr_set)
95 {
96 clib_memcpy (&ap->host_ip6_addr, mp->host_ip6_addr, 16);
97 ap->host_ip6_prefix_len = mp->host_ip6_prefix_len;
98 }
99
Damjan Marion7866c452018-01-18 13:35:11 +0100100 if (mp->host_ip4_gw_set)
101 {
102 clib_memcpy (&ap->host_ip4_gw, mp->host_ip4_gw, 4);
103 ap->host_ip4_gw_set = 1;
104 }
105
106 if (mp->host_ip6_gw_set)
107 {
108 clib_memcpy (&ap->host_ip6_gw, mp->host_ip6_gw, 16);
109 ap->host_ip6_gw_set = 1;
110 }
111
Andrew Yourtchenko754f24b2019-01-07 20:56:46 +0100112 ap->tap_flags = ntohl (mp->tap_flags);
113
Damjan Marion91c6ef72017-12-01 13:34:24 +0100114 tap_create_if (vm, ap);
Damjan Marion8389fb92017-10-13 18:29:53 +0200115
Florin Coras6c4dae22018-01-09 06:39:23 -0800116 reg = vl_api_client_index_to_registration (mp->client_index);
117 if (!reg)
118 return;;
Damjan Marion8389fb92017-10-13 18:29:53 +0200119
Jerome Tollet0b061112018-06-04 16:40:26 +0100120 /* If a tag was supplied... */
121 if (mp->tag[0])
122 {
123 /* Make sure it's a proper C-string */
124 mp->tag[ARRAY_LEN (mp->tag) - 1] = 0;
125 u8 *tag = format (0, "%s%c", mp->tag, 0);
126 vnet_set_sw_interface_tag (vnm, tag, ap->sw_if_index);
127 }
128
129
Damjan Marion8389fb92017-10-13 18:29:53 +0200130 rmp = vl_msg_api_alloc (sizeof (*rmp));
131 rmp->_vl_msg_id = ntohs (VL_API_TAP_CREATE_V2_REPLY);
132 rmp->context = mp->context;
Damjan Marion91c6ef72017-12-01 13:34:24 +0100133 rmp->retval = ntohl (ap->rv);
Damjan Marion8389fb92017-10-13 18:29:53 +0200134 rmp->sw_if_index = ntohl (ap->sw_if_index);
135
Florin Coras6c4dae22018-01-09 06:39:23 -0800136 vl_api_send_msg (reg, (u8 *) rmp);
Damjan Marion8389fb92017-10-13 18:29:53 +0200137}
138
139static void
Damjan Marion8389fb92017-10-13 18:29:53 +0200140vl_api_tap_delete_v2_t_handler (vl_api_tap_delete_v2_t * mp)
141{
Jerome Tollet0b061112018-06-04 16:40:26 +0100142 vnet_main_t *vnm = vnet_get_main ();
Damjan Marion8389fb92017-10-13 18:29:53 +0200143 vlib_main_t *vm = vlib_get_main ();
144 int rv;
Damjan Marion8389fb92017-10-13 18:29:53 +0200145 vl_api_tap_delete_v2_reply_t *rmp;
Florin Coras6c4dae22018-01-09 06:39:23 -0800146 vl_api_registration_t *reg;
Damjan Marion8389fb92017-10-13 18:29:53 +0200147 u32 sw_if_index = ntohl (mp->sw_if_index);
148
149 rv = tap_delete_if (vm, sw_if_index);
150
Florin Coras6c4dae22018-01-09 06:39:23 -0800151 reg = vl_api_client_index_to_registration (mp->client_index);
152 if (!reg)
Damjan Marion8389fb92017-10-13 18:29:53 +0200153 return;
154
155 rmp = vl_msg_api_alloc (sizeof (*rmp));
156 rmp->_vl_msg_id = ntohs (VL_API_TAP_DELETE_V2_REPLY);
157 rmp->context = mp->context;
158 rmp->retval = ntohl (rv);
159
Florin Coras6c4dae22018-01-09 06:39:23 -0800160 vl_api_send_msg (reg, (u8 *) rmp);
Damjan Marion8389fb92017-10-13 18:29:53 +0200161
162 if (!rv)
Ole Troan2e1c8962019-04-10 09:44:23 +0200163 vnet_clear_sw_interface_tag (vnm, sw_if_index);
Damjan Marion8389fb92017-10-13 18:29:53 +0200164}
165
166static void
167tap_send_sw_interface_details (vpe_api_main_t * am,
Florin Coras6c4dae22018-01-09 06:39:23 -0800168 vl_api_registration_t * reg,
Damjan Marion8389fb92017-10-13 18:29:53 +0200169 tap_interface_details_t * tap_if, u32 context)
170{
171 vl_api_sw_interface_tap_v2_details_t *mp;
172 mp = vl_msg_api_alloc (sizeof (*mp));
Dave Barachb7b92992018-10-17 10:38:51 -0400173 clib_memset (mp, 0, sizeof (*mp));
Milan Lenco73e7f422017-12-14 10:04:25 +0100174 mp->_vl_msg_id = htons (VL_API_SW_INTERFACE_TAP_V2_DETAILS);
175 mp->id = htonl (tap_if->id);
176 mp->sw_if_index = htonl (tap_if->sw_if_index);
Andrew Yourtchenko754f24b2019-01-07 20:56:46 +0100177 mp->tap_flags = htonl (tap_if->tap_flags);
Damjan Marion8389fb92017-10-13 18:29:53 +0200178 clib_memcpy (mp->dev_name, tap_if->dev_name,
179 MIN (ARRAY_LEN (mp->dev_name) - 1,
180 strlen ((const char *) tap_if->dev_name)));
Milan Lenco73e7f422017-12-14 10:04:25 +0100181 mp->rx_ring_sz = htons (tap_if->rx_ring_sz);
182 mp->tx_ring_sz = htons (tap_if->tx_ring_sz);
183 clib_memcpy (mp->host_mac_addr, tap_if->host_mac_addr, 6);
184 clib_memcpy (mp->host_if_name, tap_if->host_if_name,
185 MIN (ARRAY_LEN (mp->host_if_name) - 1,
186 strlen ((const char *) tap_if->host_if_name)));
187 clib_memcpy (mp->host_namespace, tap_if->host_namespace,
188 MIN (ARRAY_LEN (mp->host_namespace) - 1,
189 strlen ((const char *) tap_if->host_namespace)));
190 clib_memcpy (mp->host_bridge, tap_if->host_bridge,
191 MIN (ARRAY_LEN (mp->host_bridge) - 1,
192 strlen ((const char *) tap_if->host_bridge)));
193 if (tap_if->host_ip4_prefix_len)
194 clib_memcpy (&mp->host_ip4_addr, &tap_if->host_ip4_addr, 4);
195 mp->host_ip4_prefix_len = tap_if->host_ip4_prefix_len;
196 if (tap_if->host_ip6_prefix_len)
197 clib_memcpy (&mp->host_ip6_addr, &tap_if->host_ip6_addr, 16);
198 mp->host_ip6_prefix_len = tap_if->host_ip6_prefix_len;
Damjan Marion8389fb92017-10-13 18:29:53 +0200199
Milan Lenco73e7f422017-12-14 10:04:25 +0100200 mp->context = context;
Florin Coras6c4dae22018-01-09 06:39:23 -0800201 vl_api_send_msg (reg, (u8 *) mp);
Damjan Marion8389fb92017-10-13 18:29:53 +0200202}
203
204static void
205vl_api_sw_interface_tap_v2_dump_t_handler (vl_api_sw_interface_tap_v2_dump_t *
206 mp)
207{
208 int rv;
209 vpe_api_main_t *am = &vpe_api_main;
Florin Coras6c4dae22018-01-09 06:39:23 -0800210 vl_api_registration_t *reg;
Damjan Marion8389fb92017-10-13 18:29:53 +0200211 tap_interface_details_t *tapifs = NULL;
212 tap_interface_details_t *tap_if = NULL;
213
Florin Coras6c4dae22018-01-09 06:39:23 -0800214 reg = vl_api_client_index_to_registration (mp->client_index);
215 if (!reg)
Damjan Marion8389fb92017-10-13 18:29:53 +0200216 return;
217
218 rv = tap_dump_ifs (&tapifs);
219 if (rv)
220 return;
221
222 vec_foreach (tap_if, tapifs)
223 {
Florin Coras6c4dae22018-01-09 06:39:23 -0800224 tap_send_sw_interface_details (am, reg, tap_if, mp->context);
Damjan Marion8389fb92017-10-13 18:29:53 +0200225 }
226
227 vec_free (tapifs);
228}
229
230#define vl_msg_name_crc_list
231#include <vnet/vnet_all_api_h.h>
232#undef vl_msg_name_crc_list
233
234static void
235tap_setup_message_id_table (api_main_t * am)
236{
237#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
238 foreach_vl_msg_name_crc_tapv2;
239#undef _
240}
241
242static clib_error_t *
243tapv2_api_hookup (vlib_main_t * vm)
244{
245 api_main_t *am = &api_main;
246
247#define _(N,n) \
248 vl_msg_api_set_handlers(VL_API_##N, #n, \
249 vl_api_##n##_t_handler, \
250 vl_noop_handler, \
251 vl_api_##n##_t_endian, \
252 vl_api_##n##_t_print, \
253 sizeof(vl_api_##n##_t), 1);
254 foreach_tapv2_api_msg;
255#undef _
256
257 /*
258 * Set up the (msg_name, crc, message-id) table
259 */
260 tap_setup_message_id_table (am);
261
262 return 0;
263}
264
265VLIB_API_INIT_FUNCTION (tapv2_api_hookup);
266
267/*
268 * fd.io coding-style-patch-verification: ON
269 *
270 * Local Variables:
271 * eval: (c-set-style "gnu")
272 * End:
273 */