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1 | 5c361cc3 | Mark McLoughlin | /*
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2 | 5c361cc3 | Mark McLoughlin | * QEMU System Emulator
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3 | 5c361cc3 | Mark McLoughlin | *
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4 | 5c361cc3 | Mark McLoughlin | * Copyright (c) 2003-2008 Fabrice Bellard
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5 | 5c361cc3 | Mark McLoughlin | *
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6 | 5c361cc3 | Mark McLoughlin | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 5c361cc3 | Mark McLoughlin | * of this software and associated documentation files (the "Software"), to deal
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8 | 5c361cc3 | Mark McLoughlin | * in the Software without restriction, including without limitation the rights
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9 | 5c361cc3 | Mark McLoughlin | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 5c361cc3 | Mark McLoughlin | * copies of the Software, and to permit persons to whom the Software is
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11 | 5c361cc3 | Mark McLoughlin | * furnished to do so, subject to the following conditions:
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12 | 5c361cc3 | Mark McLoughlin | *
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13 | 5c361cc3 | Mark McLoughlin | * The above copyright notice and this permission notice shall be included in
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14 | 5c361cc3 | Mark McLoughlin | * all copies or substantial portions of the Software.
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15 | 5c361cc3 | Mark McLoughlin | *
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16 | 5c361cc3 | Mark McLoughlin | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 5c361cc3 | Mark McLoughlin | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 5c361cc3 | Mark McLoughlin | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 5c361cc3 | Mark McLoughlin | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 5c361cc3 | Mark McLoughlin | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 5c361cc3 | Mark McLoughlin | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 5c361cc3 | Mark McLoughlin | * THE SOFTWARE.
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23 | 5c361cc3 | Mark McLoughlin | */
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24 | 5c361cc3 | Mark McLoughlin | #include "config-host.h" |
25 | 5c361cc3 | Mark McLoughlin | |
26 | 5c361cc3 | Mark McLoughlin | #include <libvdeplug.h> |
27 | 5c361cc3 | Mark McLoughlin | |
28 | 1422e32d | Paolo Bonzini | #include "net/net.h" |
29 | a245fc18 | Paolo Bonzini | #include "clients.h" |
30 | 5c361cc3 | Mark McLoughlin | #include "qemu-common.h" |
31 | 1de7afc9 | Paolo Bonzini | #include "qemu/option.h" |
32 | 3f124b68 | Liming Wang | #include "qemu/main-loop.h" |
33 | 5c361cc3 | Mark McLoughlin | |
34 | 5c361cc3 | Mark McLoughlin | typedef struct VDEState { |
35 | 4e68f7a0 | Stefan Hajnoczi | NetClientState nc; |
36 | 5c361cc3 | Mark McLoughlin | VDECONN *vde; |
37 | 5c361cc3 | Mark McLoughlin | } VDEState; |
38 | 5c361cc3 | Mark McLoughlin | |
39 | 5c361cc3 | Mark McLoughlin | static void vde_to_qemu(void *opaque) |
40 | 5c361cc3 | Mark McLoughlin | { |
41 | 5c361cc3 | Mark McLoughlin | VDEState *s = opaque; |
42 | d32fcad3 | Scott Feldman | uint8_t buf[NET_BUFSIZE]; |
43 | 5c361cc3 | Mark McLoughlin | int size;
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44 | 5c361cc3 | Mark McLoughlin | |
45 | 5c361cc3 | Mark McLoughlin | size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0); |
46 | 5c361cc3 | Mark McLoughlin | if (size > 0) { |
47 | b4e859c6 | Mark McLoughlin | qemu_send_packet(&s->nc, buf, size); |
48 | 5c361cc3 | Mark McLoughlin | } |
49 | 5c361cc3 | Mark McLoughlin | } |
50 | 5c361cc3 | Mark McLoughlin | |
51 | 4e68f7a0 | Stefan Hajnoczi | static ssize_t vde_receive(NetClientState *nc, const uint8_t *buf, size_t size) |
52 | 5c361cc3 | Mark McLoughlin | { |
53 | b4e859c6 | Mark McLoughlin | VDEState *s = DO_UPCAST(VDEState, nc, nc); |
54 | 5c361cc3 | Mark McLoughlin | ssize_t ret; |
55 | 5c361cc3 | Mark McLoughlin | |
56 | 5c361cc3 | Mark McLoughlin | do {
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57 | 5c361cc3 | Mark McLoughlin | ret = vde_send(s->vde, (const char *)buf, size, 0); |
58 | 5c361cc3 | Mark McLoughlin | } while (ret < 0 && errno == EINTR); |
59 | 5c361cc3 | Mark McLoughlin | |
60 | 5c361cc3 | Mark McLoughlin | return ret;
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61 | 5c361cc3 | Mark McLoughlin | } |
62 | 5c361cc3 | Mark McLoughlin | |
63 | 4e68f7a0 | Stefan Hajnoczi | static void vde_cleanup(NetClientState *nc) |
64 | 5c361cc3 | Mark McLoughlin | { |
65 | b4e859c6 | Mark McLoughlin | VDEState *s = DO_UPCAST(VDEState, nc, nc); |
66 | 5c361cc3 | Mark McLoughlin | qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL); |
67 | 5c361cc3 | Mark McLoughlin | vde_close(s->vde); |
68 | 5c361cc3 | Mark McLoughlin | } |
69 | 5c361cc3 | Mark McLoughlin | |
70 | b4e859c6 | Mark McLoughlin | static NetClientInfo net_vde_info = {
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71 | 2be64a68 | Laszlo Ersek | .type = NET_CLIENT_OPTIONS_KIND_VDE, |
72 | b4e859c6 | Mark McLoughlin | .size = sizeof(VDEState),
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73 | b4e859c6 | Mark McLoughlin | .receive = vde_receive, |
74 | b4e859c6 | Mark McLoughlin | .cleanup = vde_cleanup, |
75 | b4e859c6 | Mark McLoughlin | }; |
76 | b4e859c6 | Mark McLoughlin | |
77 | 4e68f7a0 | Stefan Hajnoczi | static int net_vde_init(NetClientState *peer, const char *model, |
78 | 5c361cc3 | Mark McLoughlin | const char *name, const char *sock, |
79 | 5c361cc3 | Mark McLoughlin | int port, const char *group, int mode) |
80 | 5c361cc3 | Mark McLoughlin | { |
81 | 4e68f7a0 | Stefan Hajnoczi | NetClientState *nc; |
82 | 5c361cc3 | Mark McLoughlin | VDEState *s; |
83 | b4e859c6 | Mark McLoughlin | VDECONN *vde; |
84 | 5c361cc3 | Mark McLoughlin | char *init_group = (char *)group; |
85 | 5c361cc3 | Mark McLoughlin | char *init_sock = (char *)sock; |
86 | 5c361cc3 | Mark McLoughlin | |
87 | 5c361cc3 | Mark McLoughlin | struct vde_open_args args = {
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88 | 5c361cc3 | Mark McLoughlin | .port = port, |
89 | 5c361cc3 | Mark McLoughlin | .group = init_group, |
90 | 5c361cc3 | Mark McLoughlin | .mode = mode, |
91 | 5c361cc3 | Mark McLoughlin | }; |
92 | 5c361cc3 | Mark McLoughlin | |
93 | b4e859c6 | Mark McLoughlin | vde = vde_open(init_sock, (char *)"QEMU", &args); |
94 | b4e859c6 | Mark McLoughlin | if (!vde){
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95 | 5c361cc3 | Mark McLoughlin | return -1; |
96 | 5c361cc3 | Mark McLoughlin | } |
97 | b4e859c6 | Mark McLoughlin | |
98 | ab5f3f84 | Stefan Hajnoczi | nc = qemu_new_net_client(&net_vde_info, peer, model, name); |
99 | b4e859c6 | Mark McLoughlin | |
100 | b4e859c6 | Mark McLoughlin | snprintf(nc->info_str, sizeof(nc->info_str), "sock=%s,fd=%d", |
101 | b4e859c6 | Mark McLoughlin | sock, vde_datafd(vde)); |
102 | b4e859c6 | Mark McLoughlin | |
103 | b4e859c6 | Mark McLoughlin | s = DO_UPCAST(VDEState, nc, nc); |
104 | b4e859c6 | Mark McLoughlin | |
105 | b4e859c6 | Mark McLoughlin | s->vde = vde; |
106 | b4e859c6 | Mark McLoughlin | |
107 | 5c361cc3 | Mark McLoughlin | qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
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108 | b4e859c6 | Mark McLoughlin | |
109 | 5c361cc3 | Mark McLoughlin | return 0; |
110 | 5c361cc3 | Mark McLoughlin | } |
111 | 5c361cc3 | Mark McLoughlin | |
112 | 1a0c0958 | Laszlo Ersek | int net_init_vde(const NetClientOptions *opts, const char *name, |
113 | 4e68f7a0 | Stefan Hajnoczi | NetClientState *peer) |
114 | 5c361cc3 | Mark McLoughlin | { |
115 | 4a917c39 | Laszlo Ersek | const NetdevVdeOptions *vde;
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116 | 5c361cc3 | Mark McLoughlin | |
117 | 4a917c39 | Laszlo Ersek | assert(opts->kind == NET_CLIENT_OPTIONS_KIND_VDE); |
118 | 4a917c39 | Laszlo Ersek | vde = opts->vde; |
119 | 5c361cc3 | Mark McLoughlin | |
120 | 4a917c39 | Laszlo Ersek | /* missing optional values have been initialized to "all bits zero" */
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121 | d33d93b2 | Stefan Hajnoczi | if (net_vde_init(peer, "vde", name, vde->sock, vde->port, vde->group, |
122 | 4a917c39 | Laszlo Ersek | vde->has_mode ? vde->mode : 0700) == -1) { |
123 | 5c361cc3 | Mark McLoughlin | return -1; |
124 | 5c361cc3 | Mark McLoughlin | } |
125 | 5c361cc3 | Mark McLoughlin | |
126 | 5c361cc3 | Mark McLoughlin | return 0; |
127 | 5c361cc3 | Mark McLoughlin | } |