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Mark McLoughlin5c361cc2009-11-25 18:48:55 +00001/*
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 */
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000024#include "config-host.h"
25
26#include <libvdeplug.h>
27
Paolo Bonzini1422e322012-10-24 08:43:34 +020028#include "net/net.h"
Paolo Bonzinia245fc12012-09-17 18:43:51 +020029#include "clients.h"
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000030#include "qemu-common.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010031#include "qemu/option.h"
Liming Wang3f124b62012-12-21 16:56:58 +080032#include "qemu/main-loop.h"
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000033
34typedef struct VDEState {
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +010035 NetClientState nc;
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000036 VDECONN *vde;
37} VDEState;
38
39static void vde_to_qemu(void *opaque)
40{
41 VDEState *s = opaque;
Scott Feldmand32fcad2013-03-18 11:43:44 -070042 uint8_t buf[NET_BUFSIZE];
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000043 int size;
44
45 size = vde_recv(s->vde, (char *)buf, sizeof(buf), 0);
46 if (size > 0) {
Mark McLoughlinb4e859c2009-11-25 18:49:07 +000047 qemu_send_packet(&s->nc, buf, size);
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000048 }
49}
50
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +010051static ssize_t vde_receive(NetClientState *nc, const uint8_t *buf, size_t size)
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000052{
Mark McLoughlinb4e859c2009-11-25 18:49:07 +000053 VDEState *s = DO_UPCAST(VDEState, nc, nc);
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000054 ssize_t ret;
55
56 do {
57 ret = vde_send(s->vde, (const char *)buf, size, 0);
58 } while (ret < 0 && errno == EINTR);
59
60 return ret;
61}
62
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +010063static void vde_cleanup(NetClientState *nc)
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000064{
Mark McLoughlinb4e859c2009-11-25 18:49:07 +000065 VDEState *s = DO_UPCAST(VDEState, nc, nc);
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000066 qemu_set_fd_handler(vde_datafd(s->vde), NULL, NULL, NULL);
67 vde_close(s->vde);
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000068}
69
Mark McLoughlinb4e859c2009-11-25 18:49:07 +000070static NetClientInfo net_vde_info = {
Laszlo Ersek2be64a62012-07-17 16:17:12 +020071 .type = NET_CLIENT_OPTIONS_KIND_VDE,
Mark McLoughlinb4e859c2009-11-25 18:49:07 +000072 .size = sizeof(VDEState),
73 .receive = vde_receive,
74 .cleanup = vde_cleanup,
75};
76
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +010077static int net_vde_init(NetClientState *peer, const char *model,
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000078 const char *name, const char *sock,
79 int port, const char *group, int mode)
80{
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +010081 NetClientState *nc;
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000082 VDEState *s;
Mark McLoughlinb4e859c2009-11-25 18:49:07 +000083 VDECONN *vde;
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000084 char *init_group = (char *)group;
85 char *init_sock = (char *)sock;
86
87 struct vde_open_args args = {
88 .port = port,
89 .group = init_group,
90 .mode = mode,
91 };
92
Mark McLoughlinb4e859c2009-11-25 18:49:07 +000093 vde = vde_open(init_sock, (char *)"QEMU", &args);
94 if (!vde){
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000095 return -1;
96 }
Mark McLoughlinb4e859c2009-11-25 18:49:07 +000097
Stefan Hajnocziab5f3f82012-07-24 16:35:08 +010098 nc = qemu_new_net_client(&net_vde_info, peer, model, name);
Mark McLoughlinb4e859c2009-11-25 18:49:07 +000099
100 snprintf(nc->info_str, sizeof(nc->info_str), "sock=%s,fd=%d",
101 sock, vde_datafd(vde));
102
103 s = DO_UPCAST(VDEState, nc, nc);
104
105 s->vde = vde;
106
Mark McLoughlin5c361cc2009-11-25 18:48:55 +0000107 qemu_set_fd_handler(vde_datafd(s->vde), vde_to_qemu, NULL, s);
Mark McLoughlinb4e859c2009-11-25 18:49:07 +0000108
Mark McLoughlin5c361cc2009-11-25 18:48:55 +0000109 return 0;
110}
111
Laszlo Ersek1a0c0952012-07-17 16:17:21 +0200112int net_init_vde(const NetClientOptions *opts, const char *name,
Markus Armbrustera30ecde2015-05-15 13:58:50 +0200113 NetClientState *peer, Error **errp)
Mark McLoughlin5c361cc2009-11-25 18:48:55 +0000114{
Markus Armbrustera30ecde2015-05-15 13:58:50 +0200115 /* FIXME error_setg(errp, ...) on failure */
Laszlo Ersek4a917c32012-07-17 16:17:18 +0200116 const NetdevVdeOptions *vde;
Mark McLoughlin5c361cc2009-11-25 18:48:55 +0000117
Laszlo Ersek4a917c32012-07-17 16:17:18 +0200118 assert(opts->kind == NET_CLIENT_OPTIONS_KIND_VDE);
119 vde = opts->vde;
Mark McLoughlin5c361cc2009-11-25 18:48:55 +0000120
Laszlo Ersek4a917c32012-07-17 16:17:18 +0200121 /* missing optional values have been initialized to "all bits zero" */
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100122 if (net_vde_init(peer, "vde", name, vde->sock, vde->port, vde->group,
Laszlo Ersek4a917c32012-07-17 16:17:18 +0200123 vde->has_mode ? vde->mode : 0700) == -1) {
Mark McLoughlin5c361cc2009-11-25 18:48:55 +0000124 return -1;
125 }
126
Mark McLoughlin5c361cc2009-11-25 18:48:55 +0000127 return 0;
128}