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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 */
Peter Maydell2744d922016-01-29 17:50:00 +000024#include "qemu/osdep.h"
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000025
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"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010030#include "qemu/option.h"
Liming Wang3f124b62012-12-21 16:56:58 +080031#include "qemu/main-loop.h"
Julia Suvorova via Qemu-devel75878552018-03-15 23:06:32 +030032#include "qapi/error.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 = {
Eric Blakef394b2e2016-07-13 21:50:23 -060071 .type = NET_CLIENT_DRIVER_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,
Julia Suvorova via Qemu-devel75878552018-03-15 23:06:32 +030079 int port, const char *group, int mode, Error **errp)
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000080{
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){
Julia Suvorova via Qemu-devel75878552018-03-15 23:06:32 +030095 error_setg_errno(errp, errno, "Could not open vde");
Mark McLoughlin5c361cc2009-11-25 18:48:55 +000096 return -1;
97 }
Mark McLoughlinb4e859c2009-11-25 18:49:07 +000098
Stefan Hajnocziab5f3f82012-07-24 16:35:08 +010099 nc = qemu_new_net_client(&net_vde_info, peer, model, name);
Mark McLoughlinb4e859c2009-11-25 18:49:07 +0000100
Laurent Vivier53b85d92022-10-21 11:09:10 +0200101 qemu_set_info_str(nc, "sock=%s,fd=%d", sock, vde_datafd(vde));
Jason Wangd89b4f82021-04-02 11:03:12 +0800102
Mark McLoughlinb4e859c2009-11-25 18:49:07 +0000103 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
Kővágó, Zoltáncebea512016-07-13 21:50:12 -0600112int net_init_vde(const Netdev *netdev, const char *name,
Markus Armbrustera30ecde2015-05-15 13:58:50 +0200113 NetClientState *peer, Error **errp)
Mark McLoughlin5c361cc2009-11-25 18:48:55 +0000114{
Laszlo Ersek4a917c32012-07-17 16:17:18 +0200115 const NetdevVdeOptions *vde;
Mark McLoughlin5c361cc2009-11-25 18:48:55 +0000116
Eric Blakef394b2e2016-07-13 21:50:23 -0600117 assert(netdev->type == NET_CLIENT_DRIVER_VDE);
118 vde = &netdev->u.vde;
Mark McLoughlin5c361cc2009-11-25 18:48:55 +0000119
Laszlo Ersek4a917c32012-07-17 16:17:18 +0200120 /* missing optional values have been initialized to "all bits zero" */
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100121 if (net_vde_init(peer, "vde", name, vde->sock, vde->port, vde->group,
Julia Suvorova via Qemu-devel75878552018-03-15 23:06:32 +0300122 vde->has_mode ? vde->mode : 0700, errp) == -1) {
Mark McLoughlin5c361cc2009-11-25 18:48:55 +0000123 return -1;
124 }
125
Mark McLoughlin5c361cc2009-11-25 18:48:55 +0000126 return 0;
127}