FD.io VPP  v21.06-3-gbb25fbf28
Vector Packet Processing
vhost_user_api.c
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1 /*
2  *------------------------------------------------------------------
3  * vhost-user_api.c - vhost-user api
4  *
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:
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>
26 #include <vnet/ethernet/ethernet.h>
29 
30 #include <vnet/vnet_msg_enum.h>
31 
32 #define vl_typedefs /* define message structures */
33 #include <vnet/vnet_all_api_h.h>
34 #undef vl_typedefs
35 
36 #define vl_endianfun /* define message structures */
37 #include <vnet/vnet_all_api_h.h>
38 #undef vl_endianfun
39 
40 /* instantiate all the print functions we know about */
41 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
42 #define vl_printfun
43 #include <vnet/vnet_all_api_h.h>
44 #undef vl_printfun
45 
47 
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 _(CREATE_VHOST_USER_IF_V2, create_vhost_user_if_v2) \
52 _(MODIFY_VHOST_USER_IF_V2, modify_vhost_user_if_v2) \
53 _(DELETE_VHOST_USER_IF, delete_vhost_user_if) \
54 _(SW_INTERFACE_VHOST_USER_DUMP, sw_interface_vhost_user_dump)
55 
56 static void
58 {
59  int rv = 0;
61  vnet_main_t *vnm = vnet_get_main ();
63  u64 disabled_features = (u64) (0ULL);
64  vhost_user_create_if_args_t args = { 0 };
65 
66  args.sw_if_index = (u32) ~ 0;
67  args.feature_mask = (u64) ~ (0ULL);
68  if (mp->disable_mrg_rxbuf)
69  disabled_features = VIRTIO_FEATURE (VIRTIO_NET_F_MRG_RXBUF);
70 
71  if (mp->disable_indirect_desc)
72  disabled_features |= VIRTIO_FEATURE (VIRTIO_RING_F_INDIRECT_DESC);
73 
74  /*
75  * GSO and PACKED are not supported by feature mask via binary API. We
76  * disable GSO and PACKED feature in the feature mask. They may be enabled
77  * explicitly via enable_gso and enable_packed argument
78  */
80  VIRTIO_FEATURE (VIRTIO_F_RING_PACKED);
81 
82  /* EVENT_IDX is disabled by default */
83  disabled_features |= VIRTIO_FEATURE (VIRTIO_RING_F_EVENT_IDX);
84  args.feature_mask &= ~disabled_features;
85 
86  if (mp->use_custom_mac)
88 
89  args.use_custom_mac = mp->use_custom_mac;
90  args.is_server = mp->is_server;
91  args.sock_filename = (char *) mp->sock_filename;
92  args.renumber = mp->renumber;
93  args.custom_dev_instance = ntohl (mp->custom_dev_instance);
94  args.enable_gso = mp->enable_gso;
95  args.enable_packed = mp->enable_packed;
96  rv = vhost_user_create_if (vnm, vm, &args);
97 
98  /* Remember an interface tag for the new interface */
99  if (rv == 0)
100  {
101  /* If a tag was supplied... */
102  if (mp->tag[0])
103  {
104  /* Make sure it's a proper C-string */
105  mp->tag[ARRAY_LEN (mp->tag) - 1] = 0;
106  u8 *tag = format (0, "%s%c", mp->tag, 0);
107  vnet_set_sw_interface_tag (vnm, tag, args.sw_if_index);
108  }
109  }
110 
111  /* *INDENT-OFF* */
112  REPLY_MACRO2(VL_API_CREATE_VHOST_USER_IF_REPLY,
113  ({
114  rmp->sw_if_index = ntohl (args.sw_if_index);
115  }));
116  /* *INDENT-ON* */
117 }
118 
119 static void
121 {
122  int rv = 0;
123  vl_api_modify_vhost_user_if_reply_t *rmp;
124  u64 disabled_features = (u64) (0ULL);
125  vhost_user_create_if_args_t args = { 0 };
126  vnet_main_t *vnm = vnet_get_main ();
128 
129  args.feature_mask = (u64) ~ (0ULL);
130  /*
131  * GSO and PACKED are not supported by feature mask via binary API. We
132  * disable GSO and PACKED feature in the feature mask. They may be enabled
133  * explicitly via enable_gso and enable_packed argument
134  */
136  VIRTIO_FEATURE (VIRTIO_F_RING_PACKED);
137 
138  /* EVENT_IDX is disabled by default */
139  disabled_features |= VIRTIO_FEATURE (VIRTIO_RING_F_EVENT_IDX);
140  args.feature_mask &= ~disabled_features;
141 
142  args.sw_if_index = ntohl (mp->sw_if_index);
143  args.sock_filename = (char *) mp->sock_filename;
144  args.is_server = mp->is_server;
145  args.renumber = mp->renumber;
146  args.custom_dev_instance = ntohl (mp->custom_dev_instance);
147  args.enable_gso = mp->enable_gso;
148  args.enable_packed = mp->enable_packed;
149  rv = vhost_user_modify_if (vnm, vm, &args);
150 
151  REPLY_MACRO (VL_API_MODIFY_VHOST_USER_IF_REPLY);
152 }
153 
154 static void
156  mp)
157 {
158  int rv = 0;
160  vnet_main_t *vnm = vnet_get_main ();
162  u64 disabled_features = (u64) (0ULL);
163  vhost_user_create_if_args_t args = { 0 };
164 
165  args.sw_if_index = (u32) ~ 0;
166  args.feature_mask = (u64) ~ (0ULL);
167  if (mp->disable_mrg_rxbuf)
168  disabled_features = VIRTIO_FEATURE (VIRTIO_NET_F_MRG_RXBUF);
169 
170  if (mp->disable_indirect_desc)
171  disabled_features |= VIRTIO_FEATURE (VIRTIO_RING_F_INDIRECT_DESC);
172 
173  /*
174  * GSO and PACKED are not supported by feature mask via binary API. We
175  * disable GSO and PACKED feature in the feature mask. They may be enabled
176  * explicitly via enable_gso and enable_packed argument
177  */
179  VIRTIO_FEATURE (VIRTIO_F_RING_PACKED);
180 
181  /* EVENT_IDX is disabled by default */
182  disabled_features |= VIRTIO_FEATURE (VIRTIO_RING_F_EVENT_IDX);
183  args.feature_mask &= ~disabled_features;
184 
185  if (mp->use_custom_mac)
187 
188  args.is_server = mp->is_server;
189  args.sock_filename = (char *) mp->sock_filename;
190  args.renumber = mp->renumber;
191  args.custom_dev_instance = ntohl (mp->custom_dev_instance);
192  args.enable_gso = mp->enable_gso;
193  args.enable_packed = mp->enable_packed;
195  rv = vhost_user_create_if (vnm, vm, &args);
196 
197  /* Remember an interface tag for the new interface */
198  if (rv == 0)
199  {
200  /* If a tag was supplied... */
201  if (mp->tag[0])
202  {
203  /* Make sure it's a proper C-string */
204  mp->tag[ARRAY_LEN (mp->tag) - 1] = 0;
205  u8 *tag = format (0, "%s%c", mp->tag, 0);
206  vnet_set_sw_interface_tag (vnm, tag, args.sw_if_index);
207  }
208  }
209 
210  /* *INDENT-OFF* */
211  REPLY_MACRO2(VL_API_CREATE_VHOST_USER_IF_V2_REPLY,
212  ({
213  rmp->sw_if_index = ntohl (args.sw_if_index);
214  }));
215  /* *INDENT-ON* */
216 }
217 
218 static void
220  mp)
221 {
222  int rv = 0;
223  vl_api_modify_vhost_user_if_v2_reply_t *rmp;
224  u64 disabled_features = (u64) (0ULL);
225  vhost_user_create_if_args_t args = { 0 };
226  vnet_main_t *vnm = vnet_get_main ();
228 
229  args.feature_mask = (u64) ~ (0ULL);
230  /*
231  * GSO and PACKED are not supported by feature mask via binary API. We
232  * disable GSO and PACKED feature in the feature mask. They may be enabled
233  * explicitly via enable_gso and enable_packed argument
234  */
236  VIRTIO_FEATURE (VIRTIO_F_RING_PACKED);
237 
238  /* EVENT_IDX is disabled by default */
239  disabled_features |= VIRTIO_FEATURE (VIRTIO_RING_F_EVENT_IDX);
240  args.feature_mask &= ~disabled_features;
241 
242  args.sw_if_index = ntohl (mp->sw_if_index);
243  args.sock_filename = (char *) mp->sock_filename;
244  args.is_server = mp->is_server;
245  args.renumber = mp->renumber;
246  args.custom_dev_instance = ntohl (mp->custom_dev_instance);
247  args.enable_gso = mp->enable_gso;
248  args.enable_packed = mp->enable_packed;
250  rv = vhost_user_modify_if (vnm, vm, &args);
251 
252  REPLY_MACRO (VL_API_MODIFY_VHOST_USER_IF_V2_REPLY);
253 }
254 
255 static void
257 {
258  int rv = 0;
259  vl_api_delete_vhost_user_if_reply_t *rmp;
260  u32 sw_if_index = ntohl (mp->sw_if_index);
262 
263  vnet_main_t *vnm = vnet_get_main ();
265 
267 
268  REPLY_MACRO (VL_API_DELETE_VHOST_USER_IF_REPLY);
269  if (!rv)
270  {
272  if (!reg)
273  return;
274 
276  }
277 }
278 
279 static void
281  vl_api_registration_t * reg,
283  u32 context)
284 {
286 
287  mp = vl_msg_api_alloc (sizeof (*mp));
288  clib_memset (mp, 0, sizeof (*mp));
289  mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_VHOST_USER_DETAILS);
290  mp->sw_if_index = ntohl (vui->sw_if_index);
291  mp->virtio_net_hdr_sz = ntohl (vui->virtio_net_hdr_sz);
293  (u32 *) & mp->features_last_32);
294  mp->is_server = vui->is_server;
295  mp->num_regions = ntohl (vui->num_regions);
296  mp->sock_errno = ntohl (vui->sock_errno);
297  mp->context = context;
298 
299  strncpy ((char *) mp->sock_filename,
300  (char *) vui->sock_filename, ARRAY_LEN (mp->sock_filename) - 1);
301  strncpy ((char *) mp->interface_name,
302  (char *) vui->if_name, ARRAY_LEN (mp->interface_name) - 1);
303 
304  vl_api_send_msg (reg, (u8 *) mp);
305 }
306 
307 static void
310 {
311  int rv = 0;
313  vnet_main_t *vnm = vnet_get_main ();
315  vhost_user_intf_details_t *ifaces = NULL;
316  vhost_user_intf_details_t *vuid = NULL;
318  u32 filter_sw_if_index;
319 
321  if (!reg)
322  return;
323 
324  filter_sw_if_index = htonl (mp->sw_if_index);
325  if (filter_sw_if_index != ~0)
327 
328  rv = vhost_user_dump_ifs (vnm, vm, &ifaces);
329  if (rv)
330  return;
331 
332  vec_foreach (vuid, ifaces)
333  {
334  if ((filter_sw_if_index == ~0) ||
335  (vuid->sw_if_index == filter_sw_if_index))
337  }
339  vec_free (ifaces);
340 }
341 
342 /*
343  * vhost-user_api_hookup
344  * Add vpe's API message handlers to the table.
345  * vlib has already mapped shared memory and
346  * added the client registration handlers.
347  * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
348  */
349 #define vl_msg_name_crc_list
350 #include <vnet/vnet_all_api_h.h>
351 #undef vl_msg_name_crc_list
352 
353 static void
355 {
356 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
357  foreach_vl_msg_name_crc_vhost_user;
358 #undef _
359 }
360 
361 static clib_error_t *
363 {
365 
366 #define _(N,n) \
367  vl_msg_api_set_handlers(VL_API_##N, #n, \
368  vl_api_##n##_t_handler, \
369  vl_noop_handler, \
370  vl_api_##n##_t_endian, \
371  vl_api_##n##_t_print, \
372  sizeof(vl_api_##n##_t), 1);
374 #undef _
375 
376  /* Mark CREATE_VHOST_USER_IF as mp safe */
377  am->is_mp_safe[VL_API_CREATE_VHOST_USER_IF] = 1;
378  am->is_mp_safe[VL_API_CREATE_VHOST_USER_IF_V2] = 1;
379 
380  /*
381  * Set up the (msg_name, crc, message-id) table
382  */
384 
385  return 0;
386 }
387 
389 
390 /*
391  * fd.io coding-style-patch-verification: ON
392  *
393  * Local Variables:
394  * eval: (c-set-style "gnu")
395  * End:
396  */
vl_api_create_vhost_user_if_t_handler
static void vl_api_create_vhost_user_if_t_handler(vl_api_create_vhost_user_if_t *mp)
Definition: vhost_user_api.c:57
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vl_api_interface_index_t sw_if_index
Definition: vhost_user.api:76
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u8 is_server
Definition: vhost_user.h:108
vhost_user_create_if_args_t::custom_dev_instance
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Definition: vhost_user.h:105
vl_api_sw_interface_vhost_user_details_t::num_regions
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Definition: vhost_user.api:184
VALIDATE_SW_IF_INDEX
#define VALIDATE_SW_IF_INDEX(mp)
Definition: api_helper_macros.h:281
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static vl_api_registration_t * vl_api_client_index_to_registration(u32 index)
Definition: api.h:79
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Definition: vhost_user_api.c:48
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Definition: vhost_user.api:80
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Definition: virtio_types_api.c:29
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Definition: vhost_user.api:99
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Definition: vhost_user.api:193
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Definition: vhost_user.api:126
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Definition: vhost_user.api:56
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Definition: api.h:35
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Definition: vhost_user.c:1843
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Definition: vhost_user.api:183
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Definition: vhost_user.api:108
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Definition: vnet.h:76
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#define vec_free(V)
Free vector's memory (no header).
Definition: vec.h:395
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u32 custom_dev_instance
Definition: vhost_user.api:82
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Definition: vhost_user.api:109
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Definition: vhost_user.api:40
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unsigned long u64
Definition: types.h:89
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string sock_filename[256]
Definition: vhost_user.api:104
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Definition: vhost_user.api:149
format
description fragment has unexpected format
Definition: map.api:433
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bool renumber
Definition: vhost_user.api:146
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Definition: vhost_user.api:44
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static void send_sw_interface_vhost_user_details(vpe_api_main_t *am, vl_api_registration_t *reg, vhost_user_intf_details_t *vui, u32 context)
Definition: vhost_user_api.c:280
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string sock_filename[256]
Definition: vhost_user.api:145
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unsigned int u32
Definition: types.h:88
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string sock_filename[256]
Definition: vhost_user.api:78
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static void vnet_clear_sw_interface_tag(vnet_main_t *vnm, u32 sw_if_index)
Definition: interface_funcs.h:156
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Definition: vhost_user.h:104
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#define vec_foreach(var, vec)
Vector iterator.
Definition: vec_bootstrap.h:213
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Definition: vhost_user.api:194
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void mac_address_decode(const u8 *in, mac_address_t *out)
Conversion functions to/from (decode/encode) API types to VPP internal types.
Definition: ethernet_types_api.c:34
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Definition: vhost_user.api:150
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int vhost_user_modify_if(vnet_main_t *vnm, vlib_main_t *vm, vhost_user_create_if_args_t *args)
Definition: vhost_user.c:1678
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Definition: mac_address.h:21
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Definition: vhost_user.api:81
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Definition: vhost_user.api:107
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clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
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Definition: main.h:102
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vhost-user interface delete request
Definition: vhost_user.api:156
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static vlib_main_t * vlib_get_main(void)
Definition: global_funcs.h:38
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u32 num_regions
Definition: vhost_user.h:362
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unsigned char u8
Definition: types.h:56
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Definition: clib_error.h:21
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vhost-user interface create request
Definition: vhost_user.api:33
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vl_api_mac_address_t mac_address
Definition: vhost_user.api:47
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Vhost-user interface details structure (fix this)
Definition: vhost_user.api:174
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static void vl_api_delete_vhost_user_if_t_handler(vl_api_delete_vhost_user_if_t *mp)
Definition: vhost_user_api.c:256
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static void vl_api_create_vhost_user_if_v2_t_handler(vl_api_create_vhost_user_if_v2_t *mp)
Definition: vhost_user_api.c:155
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char * sock_filename
Definition: vhost_user.h:103
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static void vl_api_modify_vhost_user_if_v2_t_handler(vl_api_modify_vhost_user_if_v2_t *mp)
Definition: vhost_user_api.c:219
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Definition: vhost_user.h:115
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u32 context
Definition: ip.api:780
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int vhost_user_delete_if(vnet_main_t *vnm, vlib_main_t *vm, u32 sw_if_index)
Definition: vhost_user.c:1387
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int __clib_unused rv
Definition: application.c:491
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bool enable_gso
Definition: vhost_user.api:147
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Definition: vhost_user.h:357
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api_errno.h
VLIB_API_INIT_FUNCTION
VLIB_API_INIT_FUNCTION(vhost_user_api_hookup)
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vhost-user interface create response
Definition: vhost_user.api:122
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Vhost-user interface dump request.
Definition: vhost_user.api:191
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vl_api_interface_index_t sw_if_index
Definition: wireguard.api:34
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bool use_custom_mac
Definition: vhost_user.api:112
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Definition: vhost_user.h:354
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u32 context
Definition: vhost_user.api:176
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vl_api_interface_index_t sw_if_index[default=0xffffffff]
Definition: vhost_user.api:195
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u8 renumber
Definition: vhost_user.h:107
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string tag[64]
Definition: vhost_user.api:114
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Definition: vhost_user.h:106
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int vhost_user_create_if(vnet_main_t *vnm, vlib_main_t *vm, vhost_user_create_if_args_t *args)
Definition: vhost_user.c:1622
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vpe_api_main_t vpe_api_main
Definition: interface_api.c:55
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Definition: memory_shared.c:199