2 *------------------------------------------------------------------
3 * vhost-user_api.c - vhost-user api
5 * Copyright (c) 2016 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/devices/virtio/vhost_user.h>
26 #include <vnet/ethernet/ethernet.h>
27 #include <vnet/ethernet/ethernet_types_api.h>
28 #include <vnet/devices/virtio/virtio_types_api.h>
30 #include <vnet/vnet_msg_enum.h>
32 #define vl_typedefs /* define message structures */
33 #include <vnet/vnet_all_api_h.h>
36 #define vl_endianfun /* define message structures */
37 #include <vnet/vnet_all_api_h.h>
40 /* instantiate all the print functions we know about */
41 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
43 #include <vnet/vnet_all_api_h.h>
46 #include <vlibapi/api_helper_macros.h>
48 #define foreach_vpe_api_msg \
49 _(CREATE_VHOST_USER_IF, create_vhost_user_if) \
50 _(MODIFY_VHOST_USER_IF, modify_vhost_user_if) \
51 _(DELETE_VHOST_USER_IF, delete_vhost_user_if) \
52 _(SW_INTERFACE_VHOST_USER_DUMP, sw_interface_vhost_user_dump)
55 vl_api_create_vhost_user_if_t_handler (vl_api_create_vhost_user_if_t * mp)
58 vl_api_create_vhost_user_if_reply_t *rmp;
59 u32 sw_if_index = (u32) ~ 0;
60 vnet_main_t *vnm = vnet_get_main ();
61 vlib_main_t *vm = vlib_get_main ();
62 u64 features = (u64) ~ (0ULL);
63 u64 disabled_features = (u64) (0ULL);
67 if (mp->disable_mrg_rxbuf)
68 disabled_features = (1ULL << FEAT_VIRTIO_NET_F_MRG_RXBUF);
70 if (mp->disable_indirect_desc)
71 disabled_features |= (1ULL << FEAT_VIRTIO_F_INDIRECT_DESC);
74 * GSO and PACKED are not supported by feature mask via binary API. We
75 * disable GSO and PACKED feature in the feature mask. They may be enabled
76 * explicitly via enable_gso and enable_packed argument
78 disabled_features |= FEATURE_VIRTIO_NET_F_HOST_GUEST_TSO_FEATURE_BITS |
79 (1ULL << FEAT_VIRTIO_F_RING_PACKED);
80 features &= ~disabled_features;
82 if (mp->use_custom_mac)
84 mac_address_decode (mp->mac_address, &mac);
88 rv = vhost_user_create_if (vnm, vm, (char *) mp->sock_filename,
89 mp->is_server, &sw_if_index, features,
90 mp->renumber, ntohl (mp->custom_dev_instance),
91 mac_p, mp->enable_gso, mp->enable_packed);
93 /* Remember an interface tag for the new interface */
96 /* If a tag was supplied... */
99 /* Make sure it's a proper C-string */
100 mp->tag[ARRAY_LEN (mp->tag) - 1] = 0;
101 u8 *tag = format (0, "%s%c", mp->tag, 0);
102 vnet_set_sw_interface_tag (vnm, tag, sw_if_index);
107 REPLY_MACRO2(VL_API_CREATE_VHOST_USER_IF_REPLY,
109 rmp->sw_if_index = ntohl (sw_if_index);
115 vl_api_modify_vhost_user_if_t_handler (vl_api_modify_vhost_user_if_t * mp)
118 vl_api_modify_vhost_user_if_reply_t *rmp;
119 u32 sw_if_index = ntohl (mp->sw_if_index);
120 u64 features = (u64) ~ (0ULL);
121 u64 disabled_features = (u64) (0ULL);
123 vnet_main_t *vnm = vnet_get_main ();
124 vlib_main_t *vm = vlib_get_main ();
127 * GSO and PACKED are not supported by feature mask via binary API. We
128 * disable GSO and PACKED feature in the feature mask. They may be enabled
129 * explicitly via enable_gso and enable_packed argument
131 disabled_features |= FEATURE_VIRTIO_NET_F_HOST_GUEST_TSO_FEATURE_BITS |
132 (1ULL << FEAT_VIRTIO_F_RING_PACKED);
133 features &= ~disabled_features;
135 rv = vhost_user_modify_if (vnm, vm, (char *) mp->sock_filename,
136 mp->is_server, sw_if_index, features,
137 mp->renumber, ntohl (mp->custom_dev_instance),
138 mp->enable_gso, mp->enable_packed);
140 REPLY_MACRO (VL_API_MODIFY_VHOST_USER_IF_REPLY);
144 vl_api_delete_vhost_user_if_t_handler (vl_api_delete_vhost_user_if_t * mp)
147 vl_api_delete_vhost_user_if_reply_t *rmp;
148 u32 sw_if_index = ntohl (mp->sw_if_index);
149 vl_api_registration_t *reg;
151 vnet_main_t *vnm = vnet_get_main ();
152 vlib_main_t *vm = vlib_get_main ();
154 rv = vhost_user_delete_if (vnm, vm, sw_if_index);
156 REPLY_MACRO (VL_API_DELETE_VHOST_USER_IF_REPLY);
159 reg = vl_api_client_index_to_registration (mp->client_index);
163 vnet_clear_sw_interface_tag (vnm, sw_if_index);
168 send_sw_interface_vhost_user_details (vpe_api_main_t * am,
169 vl_api_registration_t * reg,
170 vhost_user_intf_details_t * vui,
173 vl_api_sw_interface_vhost_user_details_t *mp;
175 mp = vl_msg_api_alloc (sizeof (*mp));
176 clib_memset (mp, 0, sizeof (*mp));
177 mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_VHOST_USER_DETAILS);
178 mp->sw_if_index = ntohl (vui->sw_if_index);
179 mp->virtio_net_hdr_sz = ntohl (vui->virtio_net_hdr_sz);
180 virtio_features_encode (vui->features, (u32 *) & mp->features_first_32,
181 (u32 *) & mp->features_last_32);
182 mp->is_server = vui->is_server;
183 mp->num_regions = ntohl (vui->num_regions);
184 mp->sock_errno = ntohl (vui->sock_errno);
185 mp->context = context;
187 strncpy ((char *) mp->sock_filename,
188 (char *) vui->sock_filename, ARRAY_LEN (mp->sock_filename) - 1);
189 strncpy ((char *) mp->interface_name,
190 (char *) vui->if_name, ARRAY_LEN (mp->interface_name) - 1);
192 vl_api_send_msg (reg, (u8 *) mp);
196 vl_api_sw_interface_vhost_user_dump_t_handler
197 (vl_api_sw_interface_vhost_user_dump_t * mp)
200 vpe_api_main_t *am = &vpe_api_main;
201 vnet_main_t *vnm = vnet_get_main ();
202 vlib_main_t *vm = vlib_get_main ();
203 vhost_user_intf_details_t *ifaces = NULL;
204 vhost_user_intf_details_t *vuid = NULL;
205 vl_api_registration_t *reg;
206 u32 filter_sw_if_index;
208 reg = vl_api_client_index_to_registration (mp->client_index);
212 filter_sw_if_index = htonl (mp->sw_if_index);
213 if (filter_sw_if_index != ~0)
214 VALIDATE_SW_IF_INDEX (mp);
216 rv = vhost_user_dump_ifs (vnm, vm, &ifaces);
220 vec_foreach (vuid, ifaces)
222 if ((filter_sw_if_index == ~0) ||
223 (vuid->sw_if_index == filter_sw_if_index))
224 send_sw_interface_vhost_user_details (am, reg, vuid, mp->context);
226 BAD_SW_IF_INDEX_LABEL;
231 * vhost-user_api_hookup
232 * Add vpe's API message handlers to the table.
233 * vlib has already mapped shared memory and
234 * added the client registration handlers.
235 * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
237 #define vl_msg_name_crc_list
238 #include <vnet/vnet_all_api_h.h>
239 #undef vl_msg_name_crc_list
242 setup_message_id_table (api_main_t * am)
244 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
245 foreach_vl_msg_name_crc_vhost_user;
249 static clib_error_t *
250 vhost_user_api_hookup (vlib_main_t * vm)
252 api_main_t *am = vlibapi_get_main ();
255 vl_msg_api_set_handlers(VL_API_##N, #n, \
256 vl_api_##n##_t_handler, \
258 vl_api_##n##_t_endian, \
259 vl_api_##n##_t_print, \
260 sizeof(vl_api_##n##_t), 1);
264 /* Mark CREATE_VHOST_USER_IF as mp safe */
265 am->is_mp_safe[VL_API_CREATE_VHOST_USER_IF] = 1;
268 * Set up the (msg_name, crc, message-id) table
270 setup_message_id_table (am);
275 VLIB_API_INIT_FUNCTION (vhost_user_api_hookup);
278 * fd.io coding-style-patch-verification: ON
281 * eval: (c-set-style "gnu")