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
|
/*
* Copyright 2022 Virtual Open Systems SAS.
*
* Authors:
* Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <sys/eventfd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <pthread.h>
#include <stdbool.h>
#include <sys/param.h>
#include <assert.h>
/* For socket */
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
/* Project header files */
#include "virtio_loopback.h"
#include "vhost_user_loopback.h"
#include "virtio_rng.h"
#include "vhost_user_rng.h"
/* Global variables */
int client_sock;
struct vhost_dev *dev;
struct adapter_dev *adev;
struct vhost_user *vudev;
void vhost_user_adapter_init(void)
{
/* Init vhost-user device */
vudev = (struct vhost_user *)malloc(sizeof(struct vhost_user));
/* Init vhost device */
dev = (struct vhost_dev *)malloc(sizeof(struct vhost_dev));
/* Init virtio device */
global_vdev = (VirtIODevice *)malloc(sizeof(VirtIODevice));
/* Init virtio bus */
global_vbus = (VirtioBus *)malloc(sizeof(VirtioBus));
global_vbus->vdev = global_vdev;
global_vdev->vbus = global_vbus;
/* Store virtio_dev reference into vhost_dev struct*/
dev->vdev = global_vdev;
/* Init adapter device */
adev = (struct adapter_dev *)malloc(sizeof(struct adapter_dev));
adev->vdev = dev;
adev->vudev = vudev;
adev->virtio_dev = global_vdev;
adev->vbus = global_vbus;
}
void client(char *sock_path)
{
int rc, len;
struct sockaddr_un client_sockaddr;
/* Initialize the struct to zero */
memset(&client_sockaddr, 0, sizeof(struct sockaddr_un));
/*
* Create a UNIX socket
*/
client_sock = socket(AF_UNIX, SOCK_STREAM, 0);
if (client_sock == -1) {
printf("SOCKET ERROR\n");
exit(1);
}
/*
* Set up the UNIX sockaddr structure
* by using AF_UNIX for the family and
* giving it a filepath to connect.
*/
client_sockaddr.sun_family = AF_UNIX;
strcpy(client_sockaddr.sun_path, sock_path);
len = sizeof(client_sockaddr);
rc = connect(client_sock, (struct sockaddr *) &client_sockaddr, len);
if (rc == -1) {
printf("CONNECT ERROR\n");
close(client_sock);
exit(1);
}
}
static void help_args(void)
{
printf("Run example:\n\t./adapter -s /path_to_socket/rng.sock\n");
}
int main(int argc, char **argv)
{
#ifdef VHOST_USER_RNG_DEV
/*
* Check if the user has provided a socket path.
* If not, print the help messages.
*/
if ((argc <= 2) || (strcmp(argv[1], "-s") != 0)) {
goto error_args;
}
/*
* Create the socket and connect to the backend.
* Enabled on vhost-user case
*/
client(argv[2]);
#endif
/* Initialize the adapter data structures */
vhost_user_adapter_init();
/* Initialize the virtio/vhost-user device */
#ifdef VHOST_USER_RNG_DEV
vhost_user_rng_realize(); /* <-- Enable that for vhost-user-rng */
#else
virtio_rng_realize(); /* <-- Enable that for simple rng */
#endif
/* Start loopback trasnport layer and communiation with the loopback driver */
virtio_loopback_start();
return 0;
error_args:
help_args();
return 1;
}
|
