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5c361cc3 MM |
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 "net/vde.h" | |
25 | ||
26 | #include "config-host.h" | |
27 | ||
28 | #include <libvdeplug.h> | |
29 | ||
30 | #include "net.h" | |
31 | #include "qemu-char.h" | |
32 | #include "qemu-common.h" | |
33 | #include "qemu-option.h" | |
34 | #include "sysemu.h" | |
35 | ||
36 | typedef struct VDEState { | |
b4e859c6 | 37 | VLANClientState nc; |
5c361cc3 MM |
38 | VDECONN *vde; |
39 | } VDEState; | |
40 | ||
41 | static void vde_to_qemu(void *opaque) | |
42 | { | |
43 | VDEState *s = opaque; | |
44 | uint8_t buf[4096]; | |
45 | int size; | |
46 | ||
47 | size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0); | |
48 | if (size > 0) { | |
b4e859c6 | 49 | qemu_send_packet(&s->nc, buf, size); |
5c361cc3 MM |
50 | } |
51 | } | |
52 | ||
b4e859c6 | 53 | static ssize_t vde_receive(VLANClientState *nc, const uint8_t *buf, size_t size) |
5c361cc3 | 54 | { |
b4e859c6 | 55 | VDEState *s = DO_UPCAST(VDEState, nc, nc); |
5c361cc3 MM |
56 | ssize_t ret; |
57 | ||
58 | do { | |
59 | ret = vde_send(s->vde, (const char *)buf, size, 0); | |
60 | } while (ret < 0 && errno == EINTR); | |
61 | ||
62 | return ret; | |
63 | } | |
64 | ||
b4e859c6 | 65 | static void vde_cleanup(VLANClientState *nc) |
5c361cc3 | 66 | { |
b4e859c6 | 67 | VDEState *s = DO_UPCAST(VDEState, nc, nc); |
5c361cc3 MM |
68 | qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL); |
69 | vde_close(s->vde); | |
5c361cc3 MM |
70 | } |
71 | ||
b4e859c6 MM |
72 | static NetClientInfo net_vde_info = { |
73 | .type = NET_CLIENT_TYPE_VDE, | |
74 | .size = sizeof(VDEState), | |
75 | .receive = vde_receive, | |
76 | .cleanup = vde_cleanup, | |
77 | }; | |
78 | ||
5c361cc3 MM |
79 | static int net_vde_init(VLANState *vlan, const char *model, |
80 | const char *name, const char *sock, | |
81 | int port, const char *group, int mode) | |
82 | { | |
b4e859c6 | 83 | VLANClientState *nc; |
5c361cc3 | 84 | VDEState *s; |
b4e859c6 | 85 | VDECONN *vde; |
5c361cc3 MM |
86 | char *init_group = (char *)group; |
87 | char *init_sock = (char *)sock; | |
88 | ||
89 | struct vde_open_args args = { | |
90 | .port = port, | |
91 | .group = init_group, | |
92 | .mode = mode, | |
93 | }; | |
94 | ||
b4e859c6 MM |
95 | vde = vde_open(init_sock, (char *)"QEMU", &args); |
96 | if (!vde){ | |
5c361cc3 MM |
97 | return -1; |
98 | } | |
b4e859c6 MM |
99 | |
100 | nc = qemu_new_net_client(&net_vde_info, vlan, NULL, 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 | ||
5c361cc3 | 109 | qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s); |
b4e859c6 | 110 | |
5c361cc3 MM |
111 | return 0; |
112 | } | |
113 | ||
114 | int net_init_vde(QemuOpts *opts, Monitor *mon, const char *name, VLANState *vlan) | |
115 | { | |
116 | const char *sock; | |
117 | const char *group; | |
118 | int port, mode; | |
119 | ||
120 | sock = qemu_opt_get(opts, "sock"); | |
121 | group = qemu_opt_get(opts, "group"); | |
122 | ||
123 | port = qemu_opt_get_number(opts, "port", 0); | |
124 | mode = qemu_opt_get_number(opts, "mode", 0700); | |
125 | ||
126 | if (net_vde_init(vlan, "vde", name, sock, port, group, mode) == -1) { | |
127 | return -1; | |
128 | } | |
129 | ||
5c361cc3 MM |
130 | return 0; |
131 | } |