mirror of
https://github.com/xemu-project/xemu.git
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132 lines
3.7 KiB
C
132 lines
3.7 KiB
C
/*
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* xemu Network Management
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*
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* Wrapper functions to configure network settings at runtime.
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*
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* Copyright (C) 2020-2021 Matt Borgerson
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "xemu-net.h"
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#include "xemu-settings.h"
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#include "qemu/osdep.h"
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#include "qemu-common.h"
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#include "hw/qdev-core.h"
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#include "hw/qdev-properties.h"
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#include "qapi/error.h"
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#include "monitor/qdev.h"
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#include "qapi/qmp/qdict.h"
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#include "qemu/option.h"
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#include "qemu/config-file.h"
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#include "net/net.h"
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#include "net/hub.h"
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static const char *id = "xemu-netdev";
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static const char *id_hubport = "xemu-netdev-hubport";
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void xemu_net_enable(void)
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{
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Error *local_err = NULL;
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NetClientState *nc = qemu_find_netdev(id);
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if (nc != NULL) {
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return;
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}
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int backend;
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const char *local_addr, *remote_addr;
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xemu_settings_get_enum(XEMU_SETTINGS_NETWORK_BACKEND, &backend);
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xemu_settings_get_string(XEMU_SETTINGS_NETWORK_REMOTE_ADDR, &remote_addr);
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xemu_settings_get_string(XEMU_SETTINGS_NETWORK_LOCAL_ADDR, &local_addr);
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// Create the netdev
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QDict *qdict;
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if (backend == XEMU_NET_BACKEND_USER) {
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qdict = qdict_new();
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qdict_put_str(qdict, "id", id);
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qdict_put_str(qdict, "type", "user");
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} else if (backend == XEMU_NET_BACKEND_SOCKET_UDP) {
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qdict = qdict_new();
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qdict_put_str(qdict, "id", id);
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qdict_put_str(qdict, "type", "socket");
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qdict_put_str(qdict, "udp", remote_addr);
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qdict_put_str(qdict, "localaddr", local_addr);
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} else {
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// Unsupported backend type
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return;
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}
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QemuOpts *opts = qemu_opts_from_qdict(qemu_find_opts("netdev"), qdict, &error_abort);
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qobject_unref(qdict);
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netdev_add(opts, &local_err);
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if (local_err) {
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qemu_opts_del(opts);
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error_report_err(local_err);
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// error_propagate(errp, local_err);
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return;
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}
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// Create the hubport
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qdict = qdict_new();
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qdict_put_str(qdict, "id", id_hubport);
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qdict_put_str(qdict, "type", "hubport");
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qdict_put_int(qdict, "hubid", 0);
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qdict_put_str(qdict, "netdev", id);
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opts = qemu_opts_from_qdict(qemu_find_opts("netdev"), qdict, &error_abort);
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qobject_unref(qdict);
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netdev_add(opts, &local_err);
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if (local_err) {
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qemu_opts_del(opts);
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error_report_err(local_err);
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// error_propagate(errp, local_err);
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}
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}
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static void remove_netdev(const char *name)
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{
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NetClientState *nc;
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QemuOpts *opts;
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nc = qemu_find_netdev(name);
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if (!nc) {
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// error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
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// "Device '%s' not found", name);
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return;
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}
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opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name);
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if (!opts) {
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// error_setg(errp, "Device '%s' is not a netdev", name);
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return;
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}
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qemu_opts_del(opts);
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qemu_del_net_client(nc);
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}
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void xemu_net_disable(void)
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{
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remove_netdev(id);
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remove_netdev(id_hubport);
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}
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int xemu_net_is_enabled(void)
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{
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NetClientState *nc;
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nc = qemu_find_netdev(id);
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return (nc != NULL);
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}
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