2 *------------------------------------------------------------------
3 * tap_api.c - vnet tap device driver API support
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:
10 * http://www.apache.org/licenses/LICENSE-2.0
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 *------------------------------------------------------------------
20 #include <vnet/vnet.h>
21 #include <vlibmemory/api.h>
23 #include <vnet/interface.h>
24 #include <vnet/api_errno.h>
25 #include <vnet/ethernet/ethernet.h>
26 #include <vnet/ip/ip.h>
28 #include <vnet/ethernet/ethernet_types_api.h>
29 #include <vnet/ip/ip_types_api.h>
31 #include <vnet/vnet_msg_enum.h>
33 #define vl_typedefs /* define message structures */
34 #include <vnet/vnet_all_api_h.h>
37 #define vl_endianfun /* define message structures */
38 #include <vnet/vnet_all_api_h.h>
41 /* instantiate all the print functions we know about */
42 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
44 #include <vnet/vnet_all_api_h.h>
47 #include <vlibapi/api_helper_macros.h>
48 #include <vnet/devices/tap/tap.h>
50 #define foreach_tapv2_api_msg \
51 _(TAP_CREATE_V2, tap_create_v2) \
52 _(TAP_DELETE_V2, tap_delete_v2) \
53 _(SW_INTERFACE_TAP_V2_DUMP, sw_interface_tap_v2_dump)
56 vl_api_tap_create_v2_t_handler (vl_api_tap_create_v2_t * mp)
58 vl_api_registration_t *reg;
59 reg = vl_api_client_index_to_registration (mp->client_index);
63 vnet_main_t *vnm = vnet_get_main ();
64 vlib_main_t *vm = vlib_get_main ();
65 vl_api_tap_create_v2_reply_t *rmp;
67 tap_create_if_args_t _a, *ap = &_a;
69 clib_memset (ap, 0, sizeof (*ap));
71 ap->id = ntohl (mp->id);
72 if (!mp->use_random_mac)
74 mac_address_decode (mp->mac_address, &ap->mac_addr);
77 ap->rx_ring_sz = ntohs (mp->rx_ring_sz);
78 ap->tx_ring_sz = ntohs (mp->tx_ring_sz);
79 ap->sw_if_index = (u32) ~ 0;
81 if (mp->num_rx_queues < 1)
83 ap->rv = VNET_API_ERROR_INVALID_ARGUMENT;
88 ap->num_rx_queues = mp->num_rx_queues;
90 if (mp->host_if_name_set)
91 ap->host_if_name = mp->host_if_name;
93 if (mp->host_mac_addr_set)
95 mac_address_decode (mp->host_mac_addr, &ap->host_mac_addr);
98 if (mp->host_namespace_set)
99 ap->host_namespace = mp->host_namespace;
101 if (mp->host_bridge_set)
102 ap->host_bridge = mp->host_bridge;
104 if (mp->host_ip4_prefix_set)
106 ip4_address_decode (mp->host_ip4_prefix.address, &ap->host_ip4_addr);
107 ap->host_ip4_prefix_len = mp->host_ip4_prefix.len;
110 if (mp->host_ip6_prefix_set)
112 ip6_address_decode (mp->host_ip6_prefix.address, &ap->host_ip6_addr);
113 ap->host_ip6_prefix_len = mp->host_ip6_prefix.len;
116 if (mp->host_ip4_gw_set)
118 ip4_address_decode (mp->host_ip4_gw, &ap->host_ip4_gw);
119 ap->host_ip4_gw_set = 1;
122 if (mp->host_ip6_gw_set)
124 ip6_address_decode (mp->host_ip6_gw, &ap->host_ip6_gw);
125 ap->host_ip6_gw_set = 1;
128 if (mp->host_mtu_set)
130 ap->host_mtu_size = ntohl (mp->host_mtu_size);
131 ap->host_mtu_set = 1;
134 ap->tap_flags = ntohl (mp->tap_flags);
136 tap_create_if (vm, ap);
139 /* If a tag was supplied... */
140 if (vl_api_string_len (&mp->tag))
142 u8 *tag = format (0, "%s%c", vl_api_from_api_string (&mp->tag), 0);
143 vnet_set_sw_interface_tag (vnm, tag, ap->sw_if_index);
147 rmp = vl_msg_api_alloc (sizeof (*rmp));
148 rmp->_vl_msg_id = ntohs (VL_API_TAP_CREATE_V2_REPLY);
149 rmp->context = mp->context;
150 rmp->retval = ntohl (ap->rv);
151 rmp->sw_if_index = ntohl (ap->sw_if_index);
153 vl_api_send_msg (reg, (u8 *) rmp);
157 vl_api_tap_delete_v2_t_handler (vl_api_tap_delete_v2_t * mp)
159 vl_api_registration_t *reg;
160 reg = vl_api_client_index_to_registration (mp->client_index);
164 vnet_main_t *vnm = vnet_get_main ();
165 vlib_main_t *vm = vlib_get_main ();
167 vl_api_tap_delete_v2_reply_t *rmp;
169 u32 sw_if_index = ntohl (mp->sw_if_index);
171 rv = tap_delete_if (vm, sw_if_index);
175 rmp = vl_msg_api_alloc (sizeof (*rmp));
176 rmp->_vl_msg_id = ntohs (VL_API_TAP_DELETE_V2_REPLY);
177 rmp->context = mp->context;
178 rmp->retval = ntohl (rv);
180 vl_api_send_msg (reg, (u8 *) rmp);
183 vnet_clear_sw_interface_tag (vnm, sw_if_index);
187 tap_send_sw_interface_details (vpe_api_main_t * am,
188 vl_api_registration_t * reg,
189 tap_interface_details_t * tap_if, u32 context)
191 vl_api_sw_interface_tap_v2_details_t *mp;
192 mp = vl_msg_api_alloc (sizeof (*mp));
193 clib_memset (mp, 0, sizeof (*mp));
194 mp->_vl_msg_id = htons (VL_API_SW_INTERFACE_TAP_V2_DETAILS);
195 mp->id = htonl (tap_if->id);
196 mp->sw_if_index = htonl (tap_if->sw_if_index);
197 mp->tap_flags = htonl (tap_if->tap_flags);
198 clib_memcpy (mp->dev_name, tap_if->dev_name,
199 MIN (ARRAY_LEN (mp->dev_name) - 1,
200 strlen ((const char *) tap_if->dev_name)));
201 mp->rx_ring_sz = htons (tap_if->rx_ring_sz);
202 mp->tx_ring_sz = htons (tap_if->tx_ring_sz);
203 mac_address_encode (&tap_if->host_mac_addr, mp->host_mac_addr);
204 clib_memcpy (mp->host_if_name, tap_if->host_if_name,
205 MIN (ARRAY_LEN (mp->host_if_name) - 1,
206 strlen ((const char *) tap_if->host_if_name)));
207 clib_memcpy (mp->host_namespace, tap_if->host_namespace,
208 MIN (ARRAY_LEN (mp->host_namespace) - 1,
209 strlen ((const char *) tap_if->host_namespace)));
210 clib_memcpy (mp->host_bridge, tap_if->host_bridge,
211 MIN (ARRAY_LEN (mp->host_bridge) - 1,
212 strlen ((const char *) tap_if->host_bridge)));
213 mp->host_mtu_size = htonl (tap_if->host_mtu_size);
214 mac_address_encode (&tap_if->host_mac_addr, mp->host_mac_addr);
216 if (tap_if->host_ip4_prefix_len)
217 ip4_address_encode (&tap_if->host_ip4_addr, mp->host_ip4_prefix.address);
218 mp->host_ip4_prefix.len = tap_if->host_ip4_prefix_len;
219 if (tap_if->host_ip6_prefix_len)
220 ip6_address_encode (&tap_if->host_ip6_addr, mp->host_ip6_prefix.address);
221 mp->host_ip6_prefix.len = tap_if->host_ip6_prefix_len;
223 mp->context = context;
224 vl_api_send_msg (reg, (u8 *) mp);
228 vl_api_sw_interface_tap_v2_dump_t_handler (vl_api_sw_interface_tap_v2_dump_t *
232 vpe_api_main_t *am = &vpe_api_main;
233 vl_api_registration_t *reg;
234 tap_interface_details_t *tapifs = NULL;
235 tap_interface_details_t *tap_if = NULL;
236 u32 filter_sw_if_index;
238 reg = vl_api_client_index_to_registration (mp->client_index);
242 filter_sw_if_index = htonl (mp->sw_if_index);
243 if (filter_sw_if_index != ~0)
244 return; /* UNIMPLEMENTED */
246 rv = tap_dump_ifs (&tapifs);
250 vec_foreach (tap_if, tapifs)
252 tap_send_sw_interface_details (am, reg, tap_if, mp->context);
258 #define vl_msg_name_crc_list
259 #include <vnet/vnet_all_api_h.h>
260 #undef vl_msg_name_crc_list
263 tap_setup_message_id_table (api_main_t * am)
265 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
266 foreach_vl_msg_name_crc_tapv2;
270 static clib_error_t *
271 tapv2_api_hookup (vlib_main_t * vm)
273 api_main_t *am = vlibapi_get_main ();
276 vl_msg_api_set_handlers(VL_API_##N, #n, \
277 vl_api_##n##_t_handler, \
279 vl_api_##n##_t_endian, \
280 vl_api_##n##_t_print, \
281 sizeof(vl_api_##n##_t), 1);
282 foreach_tapv2_api_msg;
286 * Set up the (msg_name, crc, message-id) table
288 tap_setup_message_id_table (am);
293 VLIB_API_INIT_FUNCTION (tapv2_api_hookup);
296 * fd.io coding-style-patch-verification: ON
299 * eval: (c-set-style "gnu")