disas: Clean up CPUDebug initialization
[qemu.git] / net / vde.c
1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include "qemu/osdep.h"
25
26 #include <libvdeplug.h>
27
28 #include "net/net.h"
29 #include "clients.h"
30 #include "qemu-common.h"
31 #include "qemu/option.h"
32 #include "qemu/main-loop.h"
33 #include "qapi/error.h"
34
35 typedef struct VDEState {
36 NetClientState nc;
37 VDECONN *vde;
38 } VDEState;
39
40 static void vde_to_qemu(void *opaque)
41 {
42 VDEState *s = opaque;
43 uint8_t buf[NET_BUFSIZE];
44 int size;
45
46 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
47 if (size > 0) {
48 qemu_send_packet(&s->nc, buf, size);
49 }
50 }
51
52 static ssize_t vde_receive(NetClientState *nc, const uint8_t *buf, size_t size)
53 {
54 VDEState *s = DO_UPCAST(VDEState, nc, nc);
55 ssize_t ret;
56
57 do {
58 ret = vde_send(s->vde, (const char *)buf, size, 0);
59 } while (ret < 0 && errno == EINTR);
60
61 return ret;
62 }
63
64 static void vde_cleanup(NetClientState *nc)
65 {
66 VDEState *s = DO_UPCAST(VDEState, nc, nc);
67 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
68 vde_close(s->vde);
69 }
70
71 static NetClientInfo net_vde_info = {
72 .type = NET_CLIENT_DRIVER_VDE,
73 .size = sizeof(VDEState),
74 .receive = vde_receive,
75 .cleanup = vde_cleanup,
76 };
77
78 static int net_vde_init(NetClientState *peer, const char *model,
79 const char *name, const char *sock,
80 int port, const char *group, int mode, Error **errp)
81 {
82 NetClientState *nc;
83 VDEState *s;
84 VDECONN *vde;
85 char *init_group = (char *)group;
86 char *init_sock = (char *)sock;
87
88 struct vde_open_args args = {
89 .port = port,
90 .group = init_group,
91 .mode = mode,
92 };
93
94 vde = vde_open(init_sock, (char *)"QEMU", &args);
95 if (!vde){
96 error_setg_errno(errp, errno, "Could not open vde");
97 return -1;
98 }
99
100 nc = qemu_new_net_client(&net_vde_info, peer, model, name);
101
102 snprintf(nc->info_str, sizeof(nc->info_str), "sock=%s,fd=%d",
103 sock, vde_datafd(vde));
104
105 s = DO_UPCAST(VDEState, nc, nc);
106
107 s->vde = vde;
108
109 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
110
111 return 0;
112 }
113
114 int net_init_vde(const Netdev *netdev, const char *name,
115 NetClientState *peer, Error **errp)
116 {
117 const NetdevVdeOptions *vde;
118
119 assert(netdev->type == NET_CLIENT_DRIVER_VDE);
120 vde = &netdev->u.vde;
121
122 /* missing optional values have been initialized to "all bits zero" */
123 if (net_vde_init(peer, "vde", name, vde->sock, vde->port, vde->group,
124 vde->has_mode ? vde->mode : 0700, errp) == -1) {
125 return -1;
126 }
127
128 return 0;
129 }